The behavioural responses of the pollen beetle (Meligethes aeneus )to floral colours and odours: designing a 'push-pull' pest management strategy

Cook, S. M., Rasmussen, H. B., Skellern, M. P., Watts, N. P., Williams, I. H. and Powell, W. 2005. The behavioural responses of the pollen beetle (Meligethes aeneus )to floral colours and odours: designing a 'push-pull' pest management strategy. Abstracts Entomology 2005, Brighton, 12-14 September 2005 . pp. 27

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Species Sensitivity Distribution (SSD) profiles towards λ-cyhalothrin for key ecosystem service provider (ESP) species across five European countries representing different pedoclimatic zones

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Bick, E., Sigsgaard, L., Torrance, M. T., Helmreich, S., Still, L., Beck, B., Rashid, R. E., Lemmich, J., Nikolajsen, T. and Cook, S. M. 2024. Dynamics of pollen beetle (Brassicogethes aeneus) immigration and colonization of oilseed rape (Brassica napus) in Europe. Pest Management Science. 80 (5), pp. 2306-2313. https://doi.org/10.1002/ps.7538

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Ortega-Ramos, P., Mauchline, A. L., Metcalfe, H., Cook, S. M., Girling, R. D. and Collins, L. 2024. Modelling the factors affecting the spatiotemporal distribution of cabbage stem flea beetle (Psylliodes chrysocephala) larvae in winter oilseed rape (Brassica napus) in the UK. Pest Management Science. 80 (5), pp. 2267-2281. https://doi.org/10.1002/ps.7427

Banker Plant Bonuses? The Benefits and Risks of Including Brassicas in Field Margins to Promote Conservation Biocontrol of Specialist Pests in Oilseed Rape

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Skellern, M. P., Clark, S. J., Ferguson, A. W., Watts, N. P. and Cook, S. M. 2023. Banker Plant Bonuses? The Benefits and Risks of Including Brassicas in Field Margins to Promote Conservation Biocontrol of Specialist Pests in Oilseed Rape. Insects. 14 (4), p. 349. https://doi.org/10.3390/insects14040349

Uniting RNAi Technology and Conservation Biocontrol to Promote Global Food Security and Agrobiodiversity

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Willow, J., Cook, S. M., Veromann, E and Smagghe, G 2022. Uniting RNAi Technology and Conservation Biocontrol to Promote Global Food Security and Agrobiodiversity. Frontiers in Bioengineering and Biotechnology. 10, p. 871651. https://doi.org/10.3389/fbioe.2022.871651

Impacts of field margin orientation on populations of soil-dwelling invertebrates in relation to the direction and intensity of field traffic

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Carlesso, L., Beadle, A., Cook, S. M., Hartwell, G., Mead, A., Ritz, K., Sparkes, D., Wu, L. and Murray, P. J. 2022. Impacts of field margin orientation on populations of soil-dwelling invertebrates in relation to the direction and intensity of field traffic. Soil Use and Management. 38 (1), pp. 1015-1032. https://doi.org/10.1111/sum.12768

How contradictory EU policies led to the development of a pest - the story of oilseed rape and the cabbage stem flea beetle

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Ortega-Ramos, P., Cook, S. M. and Mauchline, A. L. 2022. How contradictory EU policies led to the development of a pest - the story of oilseed rape and the cabbage stem flea beetle. Global Change Biology. Bioenergy. 14 (3), pp. 258-266. https://doi.org/10.1111/gcbb.12922

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Willow, J., Taning, C. N. T., Cook, S. M., Sulg, S., Silva, A. I., Smagghe, G. and Veromann, E. 2021. RNAi targets in Agricultural Pest Insects: Advancements, knowledge gaps, and IPM. Frontiers in Agronomy. 3, p. 794312. https://doi.org/10.3389/fagro.2021.794312

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Advances in automatic identifcation of flying insects using optical sensors and machine learning

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Kirkeby, C, Rydhmer, K, Cook, S. M., Strand, A, Torrance, M. T., Swain, J. L., Prangsma, J, Johnen, A, Jensen, M, Brydegaard, M and Graesboll, K 2021. Advances in automatic identifcation of flying insects using optical sensors and machine learning. Scientific Reports. 11 (1), pp. 1-8. https://doi.org/10.1038/s41598-021-81005-0

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Seimandi-Corda, G., Jenkins, T. and Cook, S. M. 2021. Sampling pollen beetle (Brassicogethes aeneus) pressure in oilseed rape: which method is best? Pest Management Science. 77 (6), pp. 2785-2794. https://doi.org/10.1002/ps.6310

Invertebrate community structure predicts natural pest control resilience to insecticide exposure

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Greenop, A., Cook, S. M., Wilby, A., Pywell, R. F. and Woodcock, B. A. 2020. Invertebrate community structure predicts natural pest control resilience to insecticide exposure. Journal of Applied Ecology. https://doi.org/10.1111/1365-2664.13752

Equivocal Evidence for Colony Level Stress Effects on Bumble Bee Pollination Services

A - Papers appearing in refereed journals

Greenop, A., Mica-Hawkyard, N., Walkington, S., Wilby, A., Cook, S. M., Pywell, R. F. and Woodcock, B. A. 2020. Equivocal Evidence for Colony Level Stress Effects on Bumble Bee Pollination Services. Insects. 11, p. 191. https://doi.org/10.3390/insects11030191

Two common invertebrate predators show varying responses to different types of sentinel prey in a mesocosm study

A - Papers appearing in refereed journals

Greenop, A., Cecelja, A., Woodcock, B. A., Wilby, A., Cook, S. M. and Pywell, R. F. 2019. Two common invertebrate predators show varying responses to different types of sentinel prey in a mesocosm study. Journal of Applied Entomology. 143 (4), pp. 380-386. https://doi.org/10.1111/jen.12612

Soil compaction effects upon litter decomposition in an arable field and implications for management of crop residues and headlands

A - Papers appearing in refereed journals

Carlesso, L., Beadle, A., Cook, S. M., Graham, H., Ritz, K., Sparkes, D., Wu, L. and Murray, P. J. 2019. Soil compaction effects upon litter decomposition in an arable field and implications for management of crop residues and headlands. Applied Soil Ecology. 134 (February), pp. 31-37. https://doi.org/10.1016/j.apsoil.2018.10.004

Prospects for improved off-crop habitat management for pollen beetle control in oilseed rape

A - Papers appearing in refereed journals

Cook, S. M. and Skellern, M. P. 2018. Prospects for improved off-crop habitat management for pollen beetle control in oilseed rape. Arthropod-Plant Interactions. 12 (6), pp. 849-866. https://doi.org/10.1007/s11829-018-9598-9

Functional diversity positively affects prey suppression by invertebrate predators: a meta-analysis

A - Papers appearing in refereed journals

Greenop, A., Woodcock, B. A., Wilby, A., Cook, S. M. and Pywell, R. F. 2018. Functional diversity positively affects prey suppression by invertebrate predators: a meta-analysis. Ecology. 99 (8), pp. 1771-1782. https://doi.org/10.1002/ecy.2378

Semiochemical-based alternatives to synthetic toxicant insecticides for pollen beetle management

A - Papers appearing in refereed journals

Mauchline, A. L., Hervé, M. R. and Cook, S. M. 2017. Semiochemical-based alternatives to synthetic toxicant insecticides for pollen beetle management. Arthropod-Plant Interactions. https://doi.org/10.1007/s11829-017-9569-6

Manipulating field margins to increase predation intensity in fields of winter wheat (Triticum aestivum)

A - Papers appearing in refereed journals

Mansion-Vaquie, A., Ferrante, M., Cook, S. M., Pell, J. K. and Lovei, G. L. 2017. Manipulating field margins to increase predation intensity in fields of winter wheat (Triticum aestivum). Journal of Applied Entomology. 141 (8), pp. 600-611. https://doi.org/10.1111/jen.12385

Development of a statistical crop model to explain the relationship between seed yield and phenotypic diversity within the Brassica napus genepool

A - Papers appearing in refereed journals

Bennett, E., Brignell, C., Carion, P. W. C., Cook, S. M., Eastmond, P. J., Teakle, G., Hammond, J. P., Love, C., King, G. J., Roberts, J. A. and Wagstaff, C. 2017. Development of a statistical crop model to explain the relationship between seed yield and phenotypic diversity within the Brassica napus genepool. Agronomy. 7 (2), p. 31. https://doi.org/10.3390/agronomy7020031

Migratory flight behaviour of the pollen beetle Meligethes aeneus

A - Papers appearing in refereed journals

Mauchline, A. L., Cook, S. M., Powell, W., Chapman, J. W. and Osborne, J. L. 2017. Migratory flight behaviour of the pollen beetle Meligethes aeneus. Pest Management Science. 73 (6), pp. 1076-1082. https://doi.org/10.1002/ps.4550

A functional overview of conservation biological control

A - Papers appearing in refereed journals

Begg, G. S., Cook, S. M., Dye, R., Ferrante, M., Franck, P., Lavigne, C., Lovei, G. L., Mansion-Vaquie, A., Pell, J. K., Petit, S., Quesada, N., Ricci, B., Wratten, S. D. and Birch, A. N. E. 2017. A functional overview of conservation biological control. Crop Protection. 97 (July), pp. 145-158. https://doi.org/10.1016/j.cropro.2016.11.008

Meteorological and landscape influences on pollen beetle immigration into oilseed rape crops

A - Papers appearing in refereed journals

Skellern, M., Welham, S. J., Watts, N. P. and Cook, S. M. 2017. Meteorological and landscape influences on pollen beetle immigration into oilseed rape crops. Agriculture, Ecosystems & Environment. 241 (1 April), pp. 150-159. https://doi.org/10.1016/j.agee.2017.03.008

Oilseed rape (Brassica napus) as a resource for farmland insect pollinators: quantifying floral traits in conventional varieties and breeding systems

A - Papers appearing in refereed journals

Carruthers, J. M., Cook, S. M., Wright, G. A., Osborne, J. L., Clark, S. J., Swain, J. L. and Haughton, A. J. 2017. Oilseed rape (Brassica napus) as a resource for farmland insect pollinators: quantifying floral traits in conventional varieties and breeding systems. Global Change Biology. Bioenergy. 9 (8), pp. 1370-1379. https://doi.org/10.1111/gcbb.12438

The potential of crop management practices to reduce pollen beetle damage in oilseed rape

A - Papers appearing in refereed journals

Skellern, M. P. and Cook, S. M. 2017. The potential of crop management practices to reduce pollen beetle damage in oilseed rape. Arthropod-Plant Interactions. 12, p. 867–879. https://doi.org/10.1007/s11829-017-9571-z

Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies

A - Papers appearing in refereed journals

Nakashima, Y., Ida, T. Y., Powell, W., Pickett, J. A., Birkett, M. A., Taki, H. and Takabayashi, J. 2016. Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies. BioControl. 61 (5), pp. 485-496. https://doi.org/10.1007/s10526-016-9734-3

The potential of decision support systems to improve risk assessment for pollen beetle management in winter oilseed rape

A - Papers appearing in refereed journals

Ferguson, A. W., Skellern, M. P., Johnen, A., Von Richthofen, J-S., Watts, N. P., Bardsley, E., Murray, D. A. and Cook, S. M. 2016. The potential of decision support systems to improve risk assessment for pollen beetle management in winter oilseed rape. Pest Management Science. 72 (3), pp. 609-617. https://doi.org/10.1002/ps.4069

Integrated pest management of insect pests of rapeseed

C2 - Non-edited contributions to conferences

Cook, S. M. 2015. Integrated pest management of insect pests of rapeseed. Abstracts 14th International Rapeseed Congress, Saskatoon, 5-9 July 2015 .

The effect of sowing date (autumn vs. spring) on the flowering period of biennial margin mixes and their resource value for enemies of crop pests

C2 - Non-edited contributions to conferences

Baverstock, J., Torrance, M. T., Skellern, M. P., Pell, J. K., Hartwell, G. and Cook, S. M. 2015. The effect of sowing date (autumn vs. spring) on the flowering period of biennial margin mixes and their resource value for enemies of crop pests. Proceedings BASF Farm Network Conference, Bad Durkheim, 23-24 November 2015 . pp. 6-11

Appendix 4. Effect of brassica field margins on arthropod biodiversity and biocontrol in a wheat-oilseed rape rotation

D1 - Technical reports: non-confidential

Cook, S. M., Skellern, M. P., Torrance, M. T., Nevard, L., Watts, N. P., Clark, S. J. and Pell, J. K. 2015. Appendix 4. Effect of brassica field margins on arthropod biodiversity and biocontrol in a wheat-oilseed rape rotation.

Temperature-activity relationships in Meligethes aeneus: implications for pest management

A - Papers appearing in refereed journals

Ferguson, A. W., Nevard, L. M., Clark, S. J. and Cook, S. M. 2015. Temperature-activity relationships in Meligethes aeneus: implications for pest management. Pest Management Science. 71 (3), pp. 459-466. https://doi.org/10.1002/ps.3860

Flight of Meligethes aeneus at a range of altitudes

C1 - Edited contributions to conferences/learned societies

Mauchline, A. L., Cook, S. M., Powell, W., Chapman, J. W. and Osborne, J. L. 2014. Flight of Meligethes aeneus at a range of altitudes. IOBC.

Results of a small survey amongst farmers and advisers in the UK on their evaluation of the proPlant pollen beetle migration tool and its influence on their practice

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W. and Cook, S. M. 2014. Results of a small survey amongst farmers and advisers in the UK on their evaluation of the proPlant pollen beetle migration tool and its influence on their practice. IOBC.

Field margins for biocontrol and biodiversity across crop rotations: overview of the aims and approaches of Defra project IF01122

C1 - Edited contributions to conferences/learned societies

Baverstock, J., Pell, J. K., Storkey, J., Torrance, M. T. and Cook, S. M. 2014. Field margins for biocontrol and biodiversity across crop rotations: overview of the aims and approaches of Defra project IF01122. IOBC.

Effects of monitoring position and time of day on pollen beetle numbers in crops of oilseed rape

C1 - Edited contributions to conferences/learned societies

Kaasik, R., Watts, N. P., Murray, D. A., Veromann, E. and Cook, S. M. 2013. Effects of monitoring position and time of day on pollen beetle numbers in crops of oilseed rape. Proceedings of the meeting at the Georg-August-University, Göttingen, Germany, 04 - 06 October, 2011 (Working Group "Integrated Control in Oilseed Crops").. IOBC.

Comparing the performance of two decision-support systems for management of pollen beetles in oilseed rape in the UK

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Johnen, A., Bardsley, E., Von Richthofen, J-S., Skellern, M. P., Watts, N. P. and Cook, S. M. 2013. Comparing the performance of two decision-support systems for management of pollen beetles in oilseed rape in the UK. IOBC.

Red oilseed rape? The potential for manipulation of petal colour in control strategies for the pollen beetle (Meligethes aeneus)

A - Papers appearing in refereed journals

Cook, S. M., Skellern, M. P., Doring, T. F. and Pickett, J. A. 2013. Red oilseed rape? The potential for manipulation of petal colour in control strategies for the pollen beetle (Meligethes aeneus). Arthropod-Plant Interactions. 7, pp. 249-258. https://doi.org/10.1007/s11829-013-9252-5

Effects of non-host plant odour on Melingethes aeneus during immigration to oilseed rape

A - Papers appearing in refereed journals

Mauchline, A. L., Cook, S. M., Powell, W. and Osborne, J. L. 2013. Effects of non-host plant odour on Melingethes aeneus during immigration to oilseed rape. Entomologia Experimentalis et Applicata. 146 (3), pp. 313-320. https://doi.org/10.1111/eea.12030

Development of an integrated pest management strategy for control of pollen beetles in winter oilseed rape (HGCA Project Report No 504)

D1 - Technical reports: non-confidential

Cook, S. M., Doring, T. F., Ferguson, A. W., Martin, J. L., Skellern, M. P., Smart, L. E., Watts, N. P., Welham, S. J., Woodcock, C. M., Pickett, J. A., Bardsley, E., Bowman, J., Burns, S., Clarke, M., Davies, J., Gibbard, C., Johnen, A., Jennaway, R., Meredith, R., Murray, D., Nightingale, M., Padbury, N., Patrick, C., Von Richthofen, J-S., Taylor, P., Tait, M. and Werner, P. 2013. Development of an integrated pest management strategy for control of pollen beetles in winter oilseed rape (HGCA Project Report No 504). Kenilworth Home Grown Cereals Authority (HGCA).

Designing an integrated pest management strategy for pollen beetles in oilseed rape

C2 - Non-edited contributions to conferences

Cook, S. M. 2012. Designing an integrated pest management strategy for pollen beetles in oilseed rape. Abstracts GCIRC Technical Meeting, Nyon, 28 April-1 May 2013 . pp. 35

Odour-mediated orientation behaviour of the lily beetle Lilioceris lilii

A - Papers appearing in refereed journals

Salisbury, A., Cook, S. M., Powell, W. and Hardie, J. 2012. Odour-mediated orientation behaviour of the lily beetle Lilioceris lilii. Physiological Entomology. 37 (1), pp. 97-102. https://doi.org/10.1111/j.1365-3032.2011.00823.x

An investigation into the development of monitoring and risk assessment systems for pollen beetles in winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Nicholls, C. J. and Cook, S. M. 2012. An investigation into the development of monitoring and risk assessment systems for pollen beetles in winter oilseed rape. Crop Protection in Southern Britain. Aspects of Applied Biology 117 . pp. 191-196

Colour choice behaviour in the pollen beetle Meligethes aeneus (Coleoptera: Nitidulidae)

A - Papers appearing in refereed journals

Doring, T. F., Skellern, M. P., Watts, N. P. and Cook, S. M. 2012. Colour choice behaviour in the pollen beetle Meligethes aeneus (Coleoptera: Nitidulidae). Physiological Entomology. 37 (4), pp. 360-368. https://doi.org/10.1111/j.1365-3032.2012.00850.x

Confidential project report

D1 - Technical reports: non-confidential

Cook, S. M., Baverstock, J. and Skellern, M. P. 2012. Confidential project report.

Confidential Final Report

D1 - Technical reports: non-confidential

Cook, S. M. 2012. Confidential Final Report.

Two-step learning involved in acquiring olfactory preferences for plant volatiles by parasitic wasps

A - Papers appearing in refereed journals

Takemoto, H., Powell, W., Pickett, J. A., Kainoh, Y. and Takabayashi, J. 2012. Two-step learning involved in acquiring olfactory preferences for plant volatiles by parasitic wasps. Animal Behaviour. 83, pp. 1491-1496. https://doi.org/10.1016/j.anbehav.2012.03.023

Fitness trade-off in peach-potato aphids (Myzus persicae) between insecticide resistance and vulnerability to parasitoid attack at several spatial scales

A - Papers appearing in refereed journals

Foster, S. P., Denholm, I., Poppy, G. M., Thompson, R. and Powell, W. 2011. Fitness trade-off in peach-potato aphids (Myzus persicae) between insecticide resistance and vulnerability to parasitoid attack at several spatial scales. Bulletin of Entomological Research. 101 (6), pp. 659-666. https://doi.org/10.1017/S0007485310000623

Distribution of Meligethes aeneus (F.) and M. viridescens (F.) on cruciferous plants

A - Papers appearing in refereed journals

Metspalu, L., Williams, I. H., Jogar, K., Ploomi, A., Hiiesaar, K., Laaniste, P., Svilponis, E., Mand, M. and Luik, A. 2011. Distribution of Meligethes aeneus (F.) and M. viridescens (F.) on cruciferous plants. Zemdirbyste-Agriculture. 98, pp. 27-34.

Developing IPM tactics for pollen beetles in oilseed rape

C2 - Non-edited contributions to conferences

Cook, S. M., Ferguson, A. W., Martin, J. A., Skellern, M. P., Smart, L. E., Watts, N. P. and Pickett, J. A. 2010. Developing IPM tactics for pollen beetles in oilseed rape. Abstracts 9th European Congress of Entomology, Budapest, 22-27 August 2010 . pp. 196

Biocontrol-based integrated management of oilseed rape pests

E - Books edited/written by staff member, alone/with others

Williams, I. H. 2010. Biocontrol-based integrated management of oilseed rape pests. Springer Berlin.

Crop location by oilseed rape pests and host location by parasitoids

B - Book chapters etc edited externally

Cook, S. M. 2010. Crop location by oilseed rape pests and host location by parasitoids. in: Williams, I. H. (ed.) Biocontrol-based integrated management of oilseed rape pests Springer, Berlin. pp. 215-244

Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae)

A - Papers appearing in refereed journals

Salisbury, A., Clark, S. J., Powell, W. and Hardie, J. 2010. Susceptibility of six Lilium to damage by the lily beetle, Lilioceris lilii (Coleoptera: Chrysomelidae). Annals of Applied Biology - AAB. 156 (1), pp. 103-110. https://doi.org/10.1111/j.1744-7348.2009.00368.x

Learning is involved in the response of parasitic wasps Aphidius ervi (Haliday) (Hymenoptera: Braconidae) to volatiles from a broad bean plant, Vicia faba (Fabaceae), infested by aphids Acyrthosiphon pisum (Harris) (Homoptera: Aphididae)

A - Papers appearing in refereed journals

Takemoto, H., Powell, W., Pickett, J. A., Kainoh, Y. and Takabayashi, J. 2009. Learning is involved in the response of parasitic wasps Aphidius ervi (Haliday) (Hymenoptera: Braconidae) to volatiles from a broad bean plant, Vicia faba (Fabaceae), infested by aphids Acyrthosiphon pisum (Harris) (Homoptera: Aphididae). Applied Entomology and Zoology. 44, pp. 23-28. https://doi.org/10.1303/aez.2009.23

Trap crops for pollen beetles in oilseed rape: is push-pull compatible with conservation biocontrol?

C2 - Non-edited contributions to conferences

Ferguson, A. W. and Cook, S. M. 2008. Trap crops for pollen beetles in oilseed rape: is push-pull compatible with conservation biocontrol? Abstracts ENDURE International Conference 2008: Diversifying Crop Protection, La Grande-Motte, 12-15 October 2008 . pp. O.20

Oilseed rape crop ecology: optimising crop husbandry for conservation biological control and greater biodiversity. Final report on DEFRA project AR0316.

D1 - Technical reports: non-confidential

Ferguson, A. W., Williams, I. H., Cook, S. M., Clark, S. J., Frearson, D. J. T., Holdgate, R., Isger, E. A., Mason, N. S., Watts, N. P. and Todd, A. 2008. Oilseed rape crop ecology: optimising crop husbandry for conservation biological control and greater biodiversity. Final report on DEFRA project AR0316. Department for Environment, Food & Rural Affairs (DEFRA).

Phenologies and diel periodicities of within-crop flight by pests and parasitoids in oilseed rape

C2 - Non-edited contributions to conferences

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2008. Phenologies and diel periodicities of within-crop flight by pests and parasitoids in oilseed rape. Abstracts IOBC-WPRS, OILB-SROP, Working Group on Integrated Control in Oilseed Crops, Paris, 29 September - 1 October 2008 . pp. 16

Electrophysiological and behavioural responses of the pollen beetle, Meligethes aeneus , to volatiles from a non-host plant, lavender, Lavandula angustifolia (Lamiaceae)

A - Papers appearing in refereed journals

Mauchline, A. L., Birkett, M. A., Woodcock, C. M., Pickett, J. A., Osborne, J. L. and Powell, W. 2008. Electrophysiological and behavioural responses of the pollen beetle, Meligethes aeneus , to volatiles from a non-host plant, lavender, Lavandula angustifolia (Lamiaceae). Arthropod-Plant Interactions. 2, pp. 109-115. https://doi.org/10.1007/s11829-008-9038-3

Aggregation of parasitism risk in an aphid-parasitoid system: effects of plant patch size and aphid density

A - Papers appearing in refereed journals

Pareja, M., Brown, V. K. and Powell, W. 2008. Aggregation of parasitism risk in an aphid-parasitoid system: effects of plant patch size and aphid density. Basic and Applied Ecology. 9, pp. 701-708. https://doi.org/10.1016/j.baae.2007.10.008

Implications for conservation biocontrol of spatio-temporal relationships between carabid beetles and coleopterous pests in winter oilseed rape

A - Papers appearing in refereed journals

Warner, D. J., Allen-Williams, L. J., Warrington, S., Ferguson, A. W. and Williams, I. H. 2008. Implications for conservation biocontrol of spatio-temporal relationships between carabid beetles and coleopterous pests in winter oilseed rape. Agricultural and Forest Entomology. 10 (4), pp. 375-387. https://doi.org/10.1111/j.1461-9563.2008.00391.x

Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community

A - Papers appearing in refereed journals

Traugott, M., Bell, J. R., Broad, G. R., Powell, W., Van Veen, F. J. F., Vollhardt, I. M. G. and Symondson, W. O. C. 2008. Endoparasitism in cereal aphids: molecular analysis of a whole parasitoid community. Molecular Ecology. 17 (17), pp. 3928-3938. https://doi.org/10.1111/j.1365-294X.2008.03878.x

Spectral sensitivity and colour choice in the pollen beetle, Meligethes aeneus

C2 - Non-edited contributions to conferences

Doring, T. F. and Cook, S. M. 2008. Spectral sensitivity and colour choice in the pollen beetle, Meligethes aeneus. Abstracts 23rd International Congress of Entomology (ICE 2008), Durban, 6-12 July 2008 .

Responses of pollen beetles to petal colour: towards habitat management via manipulation of visual signals used in host-plant location

C2 - Non-edited contributions to conferences

Cook, S. M., Skellern, M. P. and Pickett, J. A. 2008. Responses of pollen beetles to petal colour: towards habitat management via manipulation of visual signals used in host-plant location. Abstracts 23rd International Congress of Entomology (ICE 2008), Durban, 6-12 July 2008 .

Ecological approaches to the control of pollen beetles in oilseed rape

A - Papers appearing in refereed journals

Cook, S. M. and Denholm, I. 2008. Ecological approaches to the control of pollen beetles in oilseed rape. EPPO Bulletin. 38 (1), pp. 110-113. https://doi.org/10.1111/j.1365-2338.2008.01192.x

Do cropping system and insecticide use in spring oilseed rape affect the abundance of pollen beetles (Meligethes aeneus Fab.) on the crop?

A - Papers appearing in refereed journals

Veromann, E., Kevvai, R., Luik, A. and Williams, I. H. 2008. Do cropping system and insecticide use in spring oilseed rape affect the abundance of pollen beetles (Meligethes aeneus Fab.) on the crop? International Journal of Pest Management. 54, pp. 1-4. https://doi.org/10.1080/09670870701376374

Effect of the presence of a nonhost herbivore on the response of the aphid parasitoid Diaeretiella rapae to host-infested cabbage plants

A - Papers appearing in refereed journals

Agbogba, B. C. and Powell, W. 2007. Effect of the presence of a nonhost herbivore on the response of the aphid parasitoid Diaeretiella rapae to host-infested cabbage plants. Journal of Chemical Ecology. 33, pp. 2229-2235. https://doi.org/10.1007/s10886-007-9379-x

Foraging behaviour of the parasitoid Lysiphlebus testaceipes (Hymenoptera: Braconidae) in response to plant volatiles, with reference to biocontrol of aphids in peri-urban vegetable production systems

A - Papers appearing in refereed journals

Lopez Perez, M., Fernandez Argudin, M. and Powell, W. 2007. Foraging behaviour of the parasitoid Lysiphlebus testaceipes (Hymenoptera: Braconidae) in response to plant volatiles, with reference to biocontrol of aphids in peri-urban vegetable production systems. Biocontrol Science and Technology. 17, pp. 677-686. https://doi.org/10.1080/09583150701408949

Behavioural side-effects of insecticide resistance in aphids increase their vulnerability to parasitoid attack

A - Papers appearing in refereed journals

Foster, S. P., Tomiczek, M., Thompson, R., Denholm, I., Poppy, G. M., Kraaijeveld, A. R. and Powell, W. 2007. Behavioural side-effects of insecticide resistance in aphids increase their vulnerability to parasitoid attack. Animal Behaviour. 74 (3), pp. 621-632. https://doi.org/10.1016/j.anbehav.2006.12.018

Migration to and dispersal from oilseed rape by the pollen beetle, Meligethes aeneus , in relation to wind direction

A - Papers appearing in refereed journals

Williams, I. H., Frearson, D. J. T., Barari, H. and McCartney, H. A. 2007. Migration to and dispersal from oilseed rape by the pollen beetle, Meligethes aeneus , in relation to wind direction. Agricultural and Forest Entomology. 9 (4), pp. 279-286. https://doi.org/10.1111/j.1461-9563.2007.00343.x

Trapping tactics for reducing insecticide use in pollen beetle control

C2 - Non-edited contributions to conferences

Cook, S. M. and Denholm, I. 2007. Trapping tactics for reducing insecticide use in pollen beetle control. Abstracts EPPO Workshop on Insecticide Resistance of Meligethes spp. (pollen beetle) on oilseed rape, Berlin, 3-5 September 2007 . pp. 10

Responses of Phradis parasitoids to volatiles of lavender, Lavendula angustifolia - a possible repellent for their host, Meligethes aeneus

A - Papers appearing in refereed journals

Cook, S. M., Jonsson, M., Skellern, M. P., Murray, D. A., Anderson, P. and Powell, W. 2007. Responses of Phradis parasitoids to volatiles of lavender, Lavendula angustifolia - a possible repellent for their host, Meligethes aeneus. BioControl. 52, pp. 591-598. https://doi.org/10.1007/s10526-006-9057-x

Non-inversion tillage to conserve functional biodiversity for biocontrol of oilseed rape pests

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2007. Non-inversion tillage to conserve functional biodiversity for biocontrol of oilseed rape pests. Proceedings 16th International Plant Protection Congress, Glasgow, 15-18 October 2007 . pp. 818-819

The influence of tillage on biocontrol agents of oilseed rape pests

C2 - Non-edited contributions to conferences

Ferguson, A. W., Holdgate, R., Mason, N. S., Clark, S. J. and Williams, I. H. 2007. The influence of tillage on biocontrol agents of oilseed rape pests. Abstracts Royal Entomological Society National Meeting (Ento 07), Edinburgh, 16-18 July 2007 . pp. 24

The effect [of] host plant characters on parasitism of inflorescence pests of oilseed rape

C2 - Non-edited contributions to conferences

Ferguson, A. W., Frearson, D. J. T., Mason, N. S., Todd, A. D., Clark, S. J. and Williams, I. H. 2007. The effect [of] host plant characters on parasitism of inflorescence pests of oilseed rape. Abstracts Royal Entomological Society National Meeting (Ento 07), Edinburgh, 16-18 July 2007 . pp. 18

Use of pollen colour and odour cues and effect of reward quality in foraging by the honey bee

G - Articles in popular magazines and other technical publications

Cook, S. M. 2007. Use of pollen colour and odour cues and effect of reward quality in foraging by the honey bee. BBKA News. 166, p. 13.

The use of pollen cues by free-flying honey bees (Apis mellifera)

C2 - Non-edited contributions to conferences

Cook, S. M., Poppy, G. M. and Williams, I. H. 2007. The use of pollen cues by free-flying honey bees (Apis mellifera). Abstracts 13th Symposium on Insect-Plant Relationships (SIP13), Uppsala, 29 July-2 August 2007 . pp. 152

First field evidence that parasitoids use upwind anemotaxis for host-habitat location

A - Papers appearing in refereed journals

Williams, I. H., Frearson, D. J. T., Barari, H. and McCartney, H. A. 2007. First field evidence that parasitoids use upwind anemotaxis for host-habitat location. Entomologia Experimentalis et Applicata. 123 (3), pp. 299-307. https://doi.org/10.1111/j.1570-7458.2007.00551.x

Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra

A - Papers appearing in refereed journals

Pareja, M., Moraes, M. C. B., Clark, S. J., Birkett, M. A. and Powell, W. 2007. Response of the aphid parasitoid Aphidius funebris to volatiles from undamaged and aphid-infested Centaurea nigra. Journal of Chemical Ecology. 33 (April), pp. 695-710. https://doi.org/10.1007/s10886-007-9260-y

Behavioural and chemical ecology underlying the success of turnip rape (Brassica rapa) trap crops in protecting oilseed rape (Brassica napus) from the pollen beetle (Meligethes aeneus)

A - Papers appearing in refereed journals

Cook, S. M., Rasmussen, H. B., Birkett, M. A., Murray, D. A., Pye, B. J., Watts, N. P. and Williams, I. H. 2007. Behavioural and chemical ecology underlying the success of turnip rape (Brassica rapa) trap crops in protecting oilseed rape (Brassica napus) from the pollen beetle (Meligethes aeneus). Arthropod-Plant Interactions. 1, pp. 57-67. https://doi.org/10.1007/s11829-007-9004-5

Honey bees can disseminate a microbial control agent to more than one inflorescence pest of oilseed rape

A - Papers appearing in refereed journals

Carreck, N. L., Butt, T. M., Clark, S. J., Ibrahim, L., Isger, E. A., Pell, J. K. and Williams, I. H. 2007. Honey bees can disseminate a microbial control agent to more than one inflorescence pest of oilseed rape. Biocontrol Science and Technology. 17 (2), pp. 179-191. https://doi.org/10.1080/09583150600937485

The use of push-pull strategies in integrated pest management

A - Papers appearing in refereed journals

Cook, S. M., Khan, Z. R. and Pickett, J. A. 2007. The use of push-pull strategies in integrated pest management. Annual Review of Entomology. 52, pp. 375-400. https://doi.org/10.1146/annurev.ento.52.110405.091407

Functional biodiversity of aphid natural enemies: positive intra-guild interactions

C1 - Edited contributions to conferences/learned societies

Powell, W., Pell, J. K., Nakashima, Y., Baverstock, J. and Birkett, M. A. 2006. Functional biodiversity of aphid natural enemies: positive intra-guild interactions.

The influence of petals on numbers of pests and their parasitoids in oilseed rape

C1 - Edited contributions to conferences/learned societies

Frearson, D. J. T., Ferguson, A. W., Laugier, N. and Williams, I. H. 2006. The influence of petals on numbers of pests and their parasitoids in oilseed rape. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Responses of pollen beetles (Meligethes aeneus) to petal colour

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Skellern, M. P., Smith, M. J. and Williams, I. H. 2006. Responses of pollen beetles (Meligethes aeneus) to petal colour.

Determining the sex of insect pests of oilseed rape for behavioural bioassays

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Watts, N. P., Castle, L. M. and Williams, I. H. 2006. Determining the sex of insect pests of oilseed rape for behavioural bioassays.

Responses of pollen beetles (Meligethes aeneus) to conspecific odours

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Murray, D. A., Watts, N. P. and Williams, I. H. 2006. Responses of pollen beetles (Meligethes aeneus) to conspecific odours.

The EU project MASTER (MAnagement STrategies for European Rape pests): an update

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2006. The EU project MASTER (MAnagement STrategies for European Rape pests): an update.

Upwind anemotaxis by the parasitoid Tersilochus obscurator (Hym., Ichneumonidae) on its migration flights to winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Barari, H. and Frearson, D. J. T. 2006. Upwind anemotaxis by the parasitoid Tersilochus obscurator (Hym., Ichneumonidae) on its migration flights to winter oilseed rape.

Spatial relationships between carabids and pest larvae in a winter oilseed rape crop

C1 - Edited contributions to conferences/learned societies

Warner, D. J., Allen-Williams, L. J., Ferguson, A. W. and Williams, I. H. 2006. Spatial relationships between carabids and pest larvae in a winter oilseed rape crop. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 .

The effect of soil tillage on summer predator activity in a winter oilseed rape crop

C1 - Edited contributions to conferences/learned societies

Mason, N. S., Ferguson, A. W., Holdgate, R., Clark, S. J. and Williams, I. H. 2006. The effect of soil tillage on summer predator activity in a winter oilseed rape crop. Proceedings International Symposium on Integrated Pest Management, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

The diel periodicity of within-crop flight by key parasitoids of oilseed rape pests

C1 - Edited contributions to conferences/learned societies

Holdgate, R., Ferguson, A. W., Mason, N. S., Clark, S. J. and Williams, I. H. 2006. The diel periodicity of within-crop flight by key parasitoids of oilseed rape pests. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Insect problems in European oilseed rape cultivation, and how to deal with them: the OSR farmers' perspective

C1 - Edited contributions to conferences/learned societies

Menzler-Hokkanen, I., Hokkanen, H. M. T., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Insect problems in European oilseed rape cultivation, and how to deal with them: the OSR farmers' perspective.

Pollen availability and the distribution of pollen beetles and seed weevils in oilseed rape

C1 - Edited contributions to conferences/learned societies

Frearson, D. J. T., Ferguson, A. W., Campbell, J. M. and Williams, I. H. 2006. Pollen availability and the distribution of pollen beetles and seed weevils in oilseed rape. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

The use of DNA, morphometric and ecological data to distinguish ichneumonid parasitoids of two stem-mining pests of winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Barari, H., Piper, R. W., Smith, E. and Williams, I. H. 2006. The use of DNA, morphometric and ecological data to distinguish ichneumonid parasitoids of two stem-mining pests of winter oilseed rape. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Relationships between insect pests and their parasitoids in a winter oilseed rape crop

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Campbell, J. M., Barari, H., Warner, D. J., Watts, N. P. and Williams, I. H. 2006. Relationships between insect pests and their parasitoids in a winter oilseed rape crop. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Moglichkeiten der integrierten Kontrolle von Rapsschadlingen in der Praxis - Ergebnisse einer Umfrage im Rahmen des EU-Projektes MASTER

C2 - Non-edited contributions to conferences

Ulber, B., Buchs, W., Hokkanen, H., Menzler-Hokkanen, I., Klukowski, Z., Luik, A., Nilsson, C. and Williams, I. H. 2006. Moglichkeiten der integrierten Kontrolle von Rapsschadlingen in der Praxis - Ergebnisse einer Umfrage im Rahmen des EU-Projektes MASTER.

Comment on the proposed conservation of the specific name of Curculio assimilis Paykull, 1792 (currently Ceutorhynchus assimilis; Insecta, Coleoptera)

G - Articles in popular magazines and other technical publications

Williams, I. H. 2006. Comment on the proposed conservation of the specific name of Curculio assimilis Paykull, 1792 (currently Ceutorhynchus assimilis; Insecta, Coleoptera). Bulletin of Zoological Nomenclature. 63, pp. 272-273.

Key pests and their parasitoids on spring and winter oilseed rape in Estonia

A - Papers appearing in refereed journals

Veromann, E., Luik, A., Metspalu, L. and Williams, I. H. 2006. Key pests and their parasitoids on spring and winter oilseed rape in Estonia. Entomologica fennica. 17, pp. 400-404.

Working Group Integrated Control in Oilseed Crops (1979-present)

C1 - Edited contributions to conferences/learned societies

Koopmann, B., Cook, S. M., Williams, I. H. and Paul, V. H. 2006. Working Group Integrated Control in Oilseed Crops (1979-present). Boller, E. F., Delucchi, V. and Vanlenteren, J. C. (ed.) International Organization for Biological Control of Noxious Animals and Plants: history of the first 50 years . IOBC/OILB, Dijon. pp. 241-243

A new method for electrophysiological identification of antennal pH receptor cells in ground beetles: the example of Pterostichus aethiops (Panzer,1796) (Coleoptera, Carabidae)

A - Papers appearing in refereed journals

Milius, M., Merivee, E., Williams, I. H., Luik, A., Mand, M. and Must, A. 2006. A new method for electrophysiological identification of antennal pH receptor cells in ground beetles: the example of Pterostichus aethiops (Panzer,1796) (Coleoptera, Carabidae). Journal of Insect Physiology. 52, pp. 960-967. https://doi.org/10.1016/j.jinsphys.2006.06.003

Integrating parasitoids into management of pollen beetle on oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2006. Integrating parasitoids into management of pollen beetle on oilseed rape. Faculty of Agronomy, Estonian Agricultural University.

'Push-pull' strategies for pest management in agroecosystems

C2 - Non-edited contributions to conferences

Cook, S. M. 2006. 'Push-pull' strategies for pest management in agroecosystems. Abstracts 8th European Congress of Entomology, Izmir, 17-22 September 2006 . pp. 7-10

Chemically mediated intraguild predator avoidance by aphid parasitoids: interspecific variability in sensitivity to semiochemical trails of ladybird predators

A - Papers appearing in refereed journals

Nakashima, Y., Birkett, M. A., Pye, B. J. and Powell, W. 2006. Chemically mediated intraguild predator avoidance by aphid parasitoids: interspecific variability in sensitivity to semiochemical trails of ladybird predators. Journal of Chemical Ecology. 32, pp. 1989-1998. https://doi.org/10.1007/s10886-006-9123-y

Natural occurrence of pathogens of oilseed rape pests in agricultural fields in Europe

C1 - Edited contributions to conferences/learned societies

Zec-Vojinovic, M., Hokkanen, H. M. T., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Natural occurrence of pathogens of oilseed rape pests in agricultural fields in Europe. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Integrating biological control within IPM for winter oilseed rape in Europe: an overview of the MASTER project

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2006. Integrating biological control within IPM for winter oilseed rape in Europe: an overview of the MASTER project. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Bee-mediated infection of inflorescence pests of oilseed rape by the entomopathogenic fungus Metarhizium anisopliae

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Butt, T. M., Carreck, N. L., Clark, S. J., Ibrahim, L., Isger, E. A. and Pell, J. K. 2006. Bee-mediated infection of inflorescence pests of oilseed rape by the entomopathogenic fungus Metarhizium anisopliae. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Insect pests and their natural enemies on spring oilseed rape in Estonia: impact of cropping systems

A - Papers appearing in refereed journals

Veromann, E., Tarang, T., Kevvai, R., Luik, A. and Williams, I. H. 2006. Insect pests and their natural enemies on spring oilseed rape in Estonia: impact of cropping systems. Agricultural and Food Science. 15, pp. 61-72.

Wind direction and the direction of flights of parasitoids to oilseed rape: implications for IPM

C2 - Non-edited contributions to conferences

Williams, I. H., Barari, H., Frearson, D. J. T. and McCartney, H. A. 2006. Wind direction and the direction of flights of parasitoids to oilseed rape: implications for IPM. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Identity of parasitoids and their potential for biocontrol of oilseed rape pests in Europe

C2 - Non-edited contributions to conferences

Ulber, B., Fischer, K., Klukowski, Z., Luik, A., Veromann, E., Nilsson, C., Ahman, B., Williams, I. H., Ferguson, A. W., Piper, R. and Barari, H. 2006. Identity of parasitoids and their potential for biocontrol of oilseed rape pests in Europe. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Evaluation of farming systems to enhance biological control in oilseed rape

C2 - Non-edited contributions to conferences

Nilsson, C., Buchs, W., Hokkanen, H. M. T., Menzler-Hokkanen, I., Klukowski, Z., Luik, A., Ulber, B. and Williams, I. H. 2006. Evaluation of farming systems to enhance biological control in oilseed rape. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Effects of post-harvest soil tillage on the survival of key parasitoids of oilseed rape pests

C2 - Non-edited contributions to conferences

Nilsson, C., Ulber, B., Williams, I. H., Ferguson, A. W. and Klukowski, Z. 2006. Effects of post-harvest soil tillage on the survival of key parasitoids of oilseed rape pests. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Pest problems in oilseed rape and how to deal with them: the farmers' perspective

C2 - Non-edited contributions to conferences

Menzler-Hokkanen, I., Hokkanen, H. M. T., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Pest problems in oilseed rape and how to deal with them: the farmers' perspective. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Implementation of IPM stratgeies: constraints and motivations to change farming practices

C2 - Non-edited contributions to conferences

Menzler-Hokkanen, I., Hokkanen, H. M. T., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Implementation of IPM stratgeies: constraints and motivations to change farming practices. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Oilseed rape growers' knowledge of and attitudes towards IPM

C2 - Non-edited contributions to conferences

Menzler-Hokkanen, I., Hokkanen, H. M. T., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Oilseed rape growers' knowledge of and attitudes towards IPM. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

MASTER: construction of phenological models of key parasitoids in Europe and propsects for spray windows compatible with their conservation in winter oilseed rape

C2 - Non-edited contributions to conferences

Johnen, A., Williams, I. H., Ferguson, A. W., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C. and Ulber, B. 2006. MASTER: construction of phenological models of key parasitoids in Europe and propsects for spray windows compatible with their conservation in winter oilseed rape. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

MASTER: validation of existing phenological models of the proPlant DSS for key pests in winter oilseed rape in different climatic areas in Europe and prospects for IPM

C2 - Non-edited contributions to conferences

Johnen, A., Williams, I. H., Ferguson, A. W., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C. and Ulber, B. 2006. MASTER: validation of existing phenological models of the proPlant DSS for key pests in winter oilseed rape in different climatic areas in Europe and prospects for IPM. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Effectiveness of entomopathogenic nematodes in the control of oilseed rape pests

C2 - Non-edited contributions to conferences

Hokkanen, H. M. T., Zec-Vojinovic, M., Husberg, G-B., Menzler-Hokkanen, I., Buchs, W., Klukowski, Z., Luik, A., Nilsson, C., Ulber, B. and Williams, I. H. 2006. Effectiveness of entomopathogenic nematodes in the control of oilseed rape pests. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Key predator species in oilseed rape crops - a review of literature and MASTER results

C2 - Non-edited contributions to conferences

Buchs, W., Felsmann, D. S., Klukowski, Z., Luik, A., Nilsson, C., Ahmed, B., Ulber, B. and Williams, I. H. 2006. Key predator species in oilseed rape crops - a review of literature and MASTER results. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 . British Crop Protection Council (BCPC). pp. on CD-ROM

Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae)

A - Papers appearing in refereed journals

Mand, M., Kuusik, A., Martin, A-J., Williams, I. H., Luik, A., Karise, R., Metspalu, L. and Hiiesaar, K. 2006. Regular periods of abdominal contractions recorded from larvae of the bumblebee, Bombus terrestris (Hymenoptera: Apidae). European Journal of Entomology. 103, pp. 319-322. https://doi.org/10.14411/eje.2006.041

Exploitation of host plant preferences in pest management strategies for oilseed rape (Brassica napus)

A - Papers appearing in refereed journals

Cook, S. M., Smart, L. E., Martin, J. L., Murray, D. A., Watts, N. P. and Williams, I. H. 2006. Exploitation of host plant preferences in pest management strategies for oilseed rape (Brassica napus). Entomologia Experimentalis et Applicata. 119 (3), pp. 221-229. https://doi.org/10.1111/j.1570-7458.2006.00419.x

Distributions and interactions of the stem miners Psylliodes chrysocephala and Ceutorhynchus pallidactylus and their parasitoids in a crop of winter oilseed rape (Brassica napus)

A - Papers appearing in refereed journals

Ferguson, A. W., Barari, H., Warner, D. J., Campbell, J. M., Smith, E. T., Watts, N. P. and Williams, I. H. 2006. Distributions and interactions of the stem miners Psylliodes chrysocephala and Ceutorhynchus pallidactylus and their parasitoids in a crop of winter oilseed rape (Brassica napus). Entomologia Experimentalis et Applicata. 119 (2), pp. 81-92. https://doi.org/10.1111/j.1570-7458.2006.00404.x

Development of a push-pull strategy for control of oilseed rape pests

C2 - Non-edited contributions to conferences

Cook, S. M., Smart, L. E., Skellern, M. P., Watts, N. P. and Williams, I. H. 2006. Development of a push-pull strategy for control of oilseed rape pests. Proceedings International Symposium on Integrated Pest Management in Oilseed Rape, Gottingen, 3-5 April 2006 .

Avoidance of intraguild predators by parasitoids: chemical mechanisms, behaviour and field evaluation

C1 - Edited contributions to conferences/learned societies

Nakashima, Y., Birkett, M. A. and Powell, W. 2005. Avoidance of intraguild predators by parasitoids: chemical mechanisms, behaviour and field evaluation. Proceedings International Symposium on Biological Control of Aphids and Coccids, Tsuruoka, Japan, 25-29 September 2005 .

The spatial dynamics of pollen beetles in relation to inflorescence growth stage of oilseed rape: implications for trap crop strategies

A - Papers appearing in refereed journals

Frearson, D. J. T., Ferguson, A. W., Campbell, J. M. and Williams, I. H. 2005. The spatial dynamics of pollen beetles in relation to inflorescence growth stage of oilseed rape: implications for trap crop strategies. Entomologia Experimentalis et Applicata. 116 (1), pp. 21-29. https://doi.org/10.1111/j.1570-7458.2005.00299.x

The separation of two hymenopteran parasitoids, Tersilochus obscurator and Tersilochus microgaster (Ichneumonidae), of stem-mining pests of winter oilseed rape using DNA, morphometric and ecological data

A - Papers appearing in refereed journals

Barari, H., Ferguson, A. W., Piper, R. W., Smith, E., Quicke, D. L. J. and Williams, I. H. 2005. The separation of two hymenopteran parasitoids, Tersilochus obscurator and Tersilochus microgaster (Ichneumonidae), of stem-mining pests of winter oilseed rape using DNA, morphometric and ecological data. Bulletin of Entomological Research. 95, pp. 299-307. https://doi.org/10.1079/BER2005360

MASTER - integrating biological control within IPM for winter oilseed rape across Europe

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Buchs, W., Hokkanen, H., Menzler-Hokkanen, I., Johnen, A., Klukowski, Z., Luik, A., Nilsson, C. and Ulber, B. 2005. MASTER - integrating biological control within IPM for winter oilseed rape across Europe. Proceedings BCPC International Congress - Crop Science and Technology, Glasgow, 31 October-2 November 2005 . pp. 301-308

Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris

A - Papers appearing in refereed journals

Mand, M., Kuusik, A., Martin, A-J., Williams, I. H., Luik, A., Karise, R., Metspalu, L. and Hiiesaar, K. 2005. Discontinuous gas exchange cycles and active ventilation in pupae of the bumblebee Bombus terrestris. Apidologie. 36 (4), pp. 561-570. https://doi.org/10.1051/apido:2005045

Responses of pollen beetles (Meligethes aeneus) to petal colour

C2 - Non-edited contributions to conferences

Cook, S. M., Skellern, M. P., Smith, M. and Williams, I. H. 2005. Responses of pollen beetles (Meligethes aeneus) to petal colour. Abstracts Biannual Meeting IOBC Working Group on Integrated Control in Oilseed Crops, Poznan, 11-12 October 2005 . pp. 73

Sex determination of insect pests of oilseed rape for behavioural assays

C2 - Non-edited contributions to conferences

Cook, S. M., Watts, N. P. and Williams, I. H. 2005. Sex determination of insect pests of oilseed rape for behavioural assays. Abstracts Biannual Meeting IOBC Working Group on Integrated Control in Oilseed Crops, Poznan, 11-12 October 2005 . pp. 80

Responses of pollen beetles (Meligethes aeneus) to conspecific odours

C2 - Non-edited contributions to conferences

Cook, S. M., Watts, N. P. and Williams, I. H. 2005. Responses of pollen beetles (Meligethes aeneus) to conspecific odours. Abstracts Biannual Meeting IOBC Working Group on Integrated Control in Oilseed Crops, Poznan, 11-12 October 2005 . pp. 72

Could learning of pollen odours by honey bees (Apis mellifera ) play a role in their foraging behaviour?

A - Papers appearing in refereed journals

Cook, S. M., Sandoz, J-C., Martin, A. P., Murray, D. A., Poppy, G. M. and Williams, I. H. 2005. Could learning of pollen odours by honey bees (Apis mellifera ) play a role in their foraging behaviour? Physiological Entomology. 30 (2), pp. 164-174. https://doi.org/10.1111/j.1365-3032.2005.00445.x

The effects of non-host plant essential oil volatiles on the behaviour of the pollen beetle Meligethes aeneus

A - Papers appearing in refereed journals

Mauchline, A. L., Osborne, J. L., Martin, A. P., Poppy, G. M. and Powell, W. 2005. The effects of non-host plant essential oil volatiles on the behaviour of the pollen beetle Meligethes aeneus. Entomologia Experimentalis et Applicata. 114 (3), pp. 181-188. https://doi.org/10.1111/j.1570-7458.2005.00237.x

Effect of a turnip rape (Brassica rapa ) trap crop on stem-mining pests and their parasitoids in winter oilseed rape (Brassica napus )

A - Papers appearing in refereed journals

Barari, H., Cook, S. M., Clark, S. J. and Williams, I. H. 2005. Effect of a turnip rape (Brassica rapa ) trap crop on stem-mining pests and their parasitoids in winter oilseed rape (Brassica napus ). BioControl. 50, pp. 69-86. https://doi.org/10.1007/s10526-004-0895-0

Insect behavioural ecology and other factors affecting the control efficacy of agro-ecosystem diversification strategies

A - Papers appearing in refereed journals

Potting, R. P. J., Perry, J. N. and Powell, W. 2005. Insect behavioural ecology and other factors affecting the control efficacy of agro-ecosystem diversification strategies. Ecological Modelling. 182, pp. 199-216.

Reduced response of insecticide-resistant aphids and attraction of parasitoids to aphid alarm pheromone; a potential fitness trade-off

A - Papers appearing in refereed journals

Foster, S. P., Denholm, I., Thompson, R., Poppy, G. M. and Powell, W. 2005. Reduced response of insecticide-resistant aphids and attraction of parasitoids to aphid alarm pheromone; a potential fitness trade-off. Bulletin of Entomological Research. 95 (1), pp. 37-46. https://doi.org/10.1079/BER2004336

Pushing pests around: a 'push-pull' strategy for oilseed rape

G - Articles in popular magazines and other technical publications

Cook, S. M. 2005. Pushing pests around: a 'push-pull' strategy for oilseed rape. RRA Newsletter. No 16, p. 1.

Incidence and feeding activity of epigeic, predatory invertebrates within winter oilseed rape in the UK with comparisons between integrated and conventional crop management

C1 - Edited contributions to conferences/learned societies

Piper, R. and Williams, I. H. 2004. Incidence and feeding activity of epigeic, predatory invertebrates within winter oilseed rape in the UK with comparisons between integrated and conventional crop management.

Rearing and identification of the larval parasitoids of Psylliodes chrysocephala and Ceutorhynchus pallidactylus from field-collected specimens

C1 - Edited contributions to conferences/learned societies

Barari, H., Cook, S. M. and Williams, I. H. 2004. Rearing and identification of the larval parasitoids of Psylliodes chrysocephala and Ceutorhynchus pallidactylus from field-collected specimens.

Phenology and spatial distributions of Dasineura brassicae and its parasitoids in a crop of winter oilseed rape: implications for integrated pest management

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Campbell, J. M., Warner, D. J., Watts, N. P., Schmidt, J. E. U. and Williams, I. H. 2004. Phenology and spatial distributions of Dasineura brassicae and its parasitoids in a crop of winter oilseed rape: implications for integrated pest management.

Spatial dynamics of pollen beetles (Meligethes aeneus ) in relation to inflorescence growth stage within a simulated trap crop system for oilseed rape

C1 - Edited contributions to conferences/learned societies

Frearson, D. J. T., Ferguson, A. W., Campbell, J. M. and Williams, I. H. 2004. Spatial dynamics of pollen beetles (Meligethes aeneus ) in relation to inflorescence growth stage within a simulated trap crop system for oilseed rape.

Effects of a turnip rape trap crop on the spatial distribution of Meligethes aeneus and Ceutorhynchus assimilis in oilseed rape

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Watts, N. P., Hunter, F., Smart, L. E. and Williams, I. H. 2004. Effects of a turnip rape trap crop on the spatial distribution of Meligethes aeneus and Ceutorhynchus assimilis in oilseed rape.

The EU project MASTER (MAnagement STrategies for European Rape pests): a review of progress

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Buchs, W., Hokkanen, H., Klukowski, Z., Luik, A., Menzler-Hokkanen, I., Nilsson, C. and Ulber, B. 2004. The EU project MASTER (MAnagement STrategies for European Rape pests): a review of progress.

Parasitoid impact on aphid populations in UK cereal crops and attempts at manipulation

C2 - Non-edited contributions to conferences

Powell, W. 2004. Parasitoid impact on aphid populations in UK cereal crops and attempts at manipulation. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

Spatio-temporal distributions of pests and their key parasitoids in a crop of winter oilseed rape: implications for integrated pest management

C2 - Non-edited contributions to conferences

Williams, I. H., Ferguson, A. W., Barari, H., Campbell, J., Warner, D. J., Watts, N. and Schmidt, J. E. U. 2004. Spatio-temporal distributions of pests and their key parasitoids in a crop of winter oilseed rape: implications for integrated pest management. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

Effects of turnip rape (Brassica rapa ) trap crop and insecticide treatment on infestation of winter oilseed rape (Brassica napus ) by coleopteran stem-mining pests and their parasitoids

C1 - Edited contributions to conferences/learned societies

Barari, H., Cook, S. M., Watts, N. P. and Williams, I. H. 2004. Effects of turnip rape (Brassica rapa ) trap crop and insecticide treatment on infestation of winter oilseed rape (Brassica napus ) by coleopteran stem-mining pests and their parasitoids. Proceedings 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 . pp. 1015-1017

Advances in insect pest management of oilseed rape in Europe

B - Book chapters etc edited externally

Williams, I. H. 2004. Advances in insect pest management of oilseed rape in Europe. in: Horowitz, A. R. and Ishaaya, I. (ed.) Insect pest management Springer, Berlin. pp. 181-208

Pushing insects around: the use of 'push-pull' strategies in integrated pest management

C2 - Non-edited contributions to conferences

Cook, S. M., Powell, W., Smart, L. E., Watts, N. P. and Williams, I. H. 2004. Pushing insects around: the use of 'push-pull' strategies in integrated pest management. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

On the target entomofauna of an organic winter oilseed rape field in Estonia

C1 - Edited contributions to conferences/learned societies

Tarang, T., Veromann, E., Luik, A. and Williams, I. H. 2004. On the target entomofauna of an organic winter oilseed rape field in Estonia.

Pleiotropic effects of insecticide resistance genes in an aphid pest on vulnerability to attack by parasitoid wasps

C2 - Non-edited contributions to conferences

Foster, S. P., Denholm, I. and Powell, W. 2004. Pleiotropic effects of insecticide resistance genes in an aphid pest on vulnerability to attack by parasitoid wasps. Abstracts Strength in Diversity: 22nd International Congress of Entomology, Brisbane, 15-21 August 2004 .

The role of semiochemicals in the avoidance of the seven-spot ladybird, Coccinella septempunctata , by the aphid parasitoid, Aphidius ervi

A - Papers appearing in refereed journals

Nakashima, Y., Birkett, M. A., Pye, B. J., Pickett, J. A. and Powell, W. 2004. The role of semiochemicals in the avoidance of the seven-spot ladybird, Coccinella septempunctata , by the aphid parasitoid, Aphidius ervi. Journal of Chemical Ecology. 30, pp. 1103-1116.

MASTER - ein neues EU-Projekt zur Bedeutung der naturlichen Gegenspieler fur die biologische Kontrolle von Schadlingen im integrierten Rapsanbau in Europa

C1 - Edited contributions to conferences/learned societies

Ulber, B., Buchs, W., Hokkanen, H., Johnen, A., Klukowski, Z., Luik, A., Menzler-Hokkanen, I., Nilsson, C. and Williams, I. H. 2004. MASTER - ein neues EU-Projekt zur Bedeutung der naturlichen Gegenspieler fur die biologische Kontrolle von Schadlingen im integrierten Rapsanbau in Europa.

Genetic manipulation of natural enemies: can we improve biological control by manipulating the parasitoid and/or the plant?

B - Book chapters etc edited externally

Poppy, G. M. and Powell, W. 2004. Genetic manipulation of natural enemies: can we improve biological control by manipulating the parasitoid and/or the plant? in: Mateille, T., Ehler, L. E. and Sforza, R. (ed.) Genetics, evolution and biological control CABI International, Wallingford, Oxon (CABI). pp. 219-233

Feeding responses of carabid beetles to dimethoate- contaminated prey

A - Papers appearing in refereed journals

Mauchline, A. L., Osborne, J. L. and Powell, W. 2004. Feeding responses of carabid beetles to dimethoate- contaminated prey. Agricultural and Forest Entomology. 6 (2), pp. 99-104. https://doi.org/10.1111/j.1461-9563.2004.00208.x

Do pollen beetles need pollen? The effect of pollen on oviposition, survival and development of a flower-feeding herbivore

A - Papers appearing in refereed journals

Cook, S. M., Murray, D. A. and Williams, I. H. 2004. Do pollen beetles need pollen? The effect of pollen on oviposition, survival and development of a flower-feeding herbivore. Ecological Entomology. 29 (2), pp. 164-173. https://doi.org/10.1111/j.0307-6946.2004.00589.x

Major new developments at Rothamsted

G - Articles in popular magazines and other technical publications

Williams, I. H. and Ball, B. V. 2003. Major new developments at Rothamsted. The Beekeepers Quarterly. 72, pp. 16-17.

Sampling, trapping and rearing oilseed rape pests and their parasitoids

B - Book chapters etc edited externally

Williams, I. H., Buchi, R. and Ulber, B. 2003. Sampling, trapping and rearing oilseed rape pests and their parasitoids. in: Alford, D. V. (ed.) Biocontrol of oilseed rape pests Blackwell Scientific Publications, Oxford. pp. 145-160

Parasitoids of brassica pod midge

B - Book chapters etc edited externally

Williams, I. H. 2003. Parasitoids of brassica pod midge. in: Alford, D. V. (ed.) Biocontrol of oilseed rape pests Blackwell Scientific Publications, Oxford. pp. 113-123

Parasitoids of cabbage seed weevil

B - Book chapters etc edited externally

Williams, I. H. 2003. Parasitoids of cabbage seed weevil. in: Alford, D. V. (ed.) Biocontrol of oilseed rape pests Blackwell Scientific Publications, Oxford. pp. 97-112

Mapping, characterisation and comparison of the spatio-temporal distributions of cabbage stem flea beetle (Psylliodes chrysocephala ), carabids and Collembola in a crop of winter oilseed rape (Brassica napus )

A - Papers appearing in refereed journals

Warner, D. J., Allen-Williams, L. J., Warrington, S., Ferguson, A. W. and Williams, I. H. 2003. Mapping, characterisation and comparison of the spatio-temporal distributions of cabbage stem flea beetle (Psylliodes chrysocephala ), carabids and Collembola in a crop of winter oilseed rape (Brassica napus ). Entomologia Experimentalis et Applicata. 109, pp. 225-234.

Parasitoids of flea beetles

B - Book chapters etc edited externally

Ulber, B. and Williams, I. H. 2003. Parasitoids of flea beetles. in: Alford, D. V. (ed.) Biocontrol of oilseed rape pests Blackwell Scientific Publications, Oxford. pp. 125-138

Using field margin diversification in agri-environment schemes to enhance aphid natural enemies

C1 - Edited contributions to conferences/learned societies

Powell, W., Walters, K., A'hara, S., Ashby, J., Stevenson, H. and Northing, P. 2003. Using field margin diversification in agri-environment schemes to enhance aphid natural enemies.

Determination of plant foraging preferences in the aphid parasitoid Aphidius colemani : emergence conditioning, learning and memory

C2 - Non-edited contributions to conferences

Powell, W., Storeck, A., Poppy, G. M. and Van Emden, H. 2003. Determination of plant foraging preferences in the aphid parasitoid Aphidius colemani : emergence conditioning, learning and memory. Oxford Univ Press Inc.

Avoidance of intraguild predators by parasitoids: chemically mediated behavioural mechanisms and field evaluation

C2 - Non-edited contributions to conferences

Nakashima, Y., Birkett, M. A. and Powell, W. 2003. Avoidance of intraguild predators by parasitoids: chemically mediated behavioural mechanisms and field evaluation. Oxford University Press (OUP) Oxford. https://doi.org/10.1093/jis/3.1.33

Spatio-temporal distributions of Meligethes aeneus and its parasitoids in an oilseed rape crop and their significance for crop protection

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Campbell, J. M., Warner, D. J., Watts, N. P., Schmidt, J. E. U. and Williams, I. H. 2003. Spatio-temporal distributions of Meligethes aeneus and its parasitoids in an oilseed rape crop and their significance for crop protection. Proceedings 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 . pp. 1057-1059

Are honey bees' foraging preferences affected by pollen amino acid composition

A - Papers appearing in refereed journals

Cook, S. M., Awmack, C. S., Murray, D. A. and Williams, I. H. 2003. Are honey bees' foraging preferences affected by pollen amino acid composition. Ecological Entomology. 28 (5), pp. 622-627. https://doi.org/10.1046/j.1365-2311.2003.00548.x

Effects of a turnip rape (Brassica rapa ) trap crop and insecticide treatment on infestation of winter oilseed rape (Brassica napus ) by coleopteran stem-mining pests and their parasitoids

C2 - Non-edited contributions to conferences

Barari, H., Cook, S. M., Watts, N. P. and Williams, I. H. 2003. Effects of a turnip rape (Brassica rapa ) trap crop and insecticide treatment on infestation of winter oilseed rape (Brassica napus ) by coleopteran stem-mining pests and their parasitoids. Abstracts 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 .

Management strategies for winter oilseed rape to enhance biocontrol of rape pests

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Buchs, W., Hokkanen, H., Klukowski, Z., Luik, A., Menzier-Hokkanen, I., Nilsson, C. and Ulber, B. 2003. Management strategies for winter oilseed rape to enhance biocontrol of rape pests. Proceedings 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 . pp. 1011-1013

Push-pull strategies to reduce insecticide input to oilseed rape (Brassica napus ): potential of low alkenyl glucosinolate oilseed rape varieties (push!) and turnip rape (Brassica rapa ) trap crops (pull!)

C2 - Non-edited contributions to conferences

Cook, S. M., Smart, L. E., Rasmussen, H. B., Bartlet, E., Martin, J. L., Murray, D. A., Watts, N. P. and Williams, I. H. 2003. Push-pull strategies to reduce insecticide input to oilseed rape (Brassica napus ): potential of low alkenyl glucosinolate oilseed rape varieties (push!) and turnip rape (Brassica rapa ) trap crops (pull!). Abstracts 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 . pp. 122

Push-pull strategies to reduce insecticide input to oilseed rape (Brassica napus ): potential of low alkenyl glucosinolate oilseed rape varieties (push!), and turnip rape (Brassica rapa ) trap crops (pull!)

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Smart, L. E., Rasmussen, H. B., Bartlet, E., Martin, J. L., Murray, D. A., Watts, N. P. and Williams, I. H. 2003. Push-pull strategies to reduce insecticide input to oilseed rape (Brassica napus ): potential of low alkenyl glucosinolate oilseed rape varieties (push!), and turnip rape (Brassica rapa ) trap crops (pull!). Proceedings 11th International Rapeseed Congress, Copenhagen, 6-10 July 2003 . pp. 1018-1021

Spatial distribution of pest insects in oilseed rape: implications for integrated pest management

A - Papers appearing in refereed journals

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2003. Spatial distribution of pest insects in oilseed rape: implications for integrated pest management. Agriculture, Ecosystems & Environment. 95 (2-3), pp. 509-521. https://doi.org/10.1016/S0167-8809(02)00200-1

The convention on biological diversity adopts the International Pollinator Initiative

G - Articles in popular magazines and other technical publications

Williams, I. H. 2003. The convention on biological diversity adopts the International Pollinator Initiative. Bee World. 84, pp. 27-31.

Manipulation of parasitoids for aphid pest management: progress and prospects

A - Papers appearing in refereed journals

Powell, W. and Pickett, J. A. 2003. Manipulation of parasitoids for aphid pest management: progress and prospects. Pest Management Science. 59 (2), pp. 149-155. https://doi.org/10.1002/ps.550

Pollen beetle spatio-temporal distributions in semi field scale arrays of oilseed rape plants

C2 - Non-edited contributions to conferences

Frearson, D. J. T., Ferguson, A. W., Campbell, J. C. and Williams, I. H. 2002. Pollen beetle spatio-temporal distributions in semi field scale arrays of oilseed rape plants. Abstracts 6th National Meeting of the Royal Entomological Society, Cardiff, 12-13 September 2002 .

Bee behaviour and pollination ecology

G - Articles in popular magazines and other technical publications

Williams, I. H. and Osborne, J. L. 2002. Bee behaviour and pollination ecology. Institute Of Arable Crops Research Annual Report. 2001-2002, pp. 24-27.

Pesticide risk to bee pollinators

G - Articles in popular magazines and other technical publications

Lewis, G., Stevenson, J. H. and Williams, I. H. 2002. Pesticide risk to bee pollinators.

Within-field distributions of the seed weevil, Ceutorhynchus assimilis (Paykull) and its parasitoid, Trichomalus perfectus (Walker), on winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Murchie, A. K., Ferguson, A. W., Klukowski, Z., Perry, J. N. and Walczak, B. 2002. Within-field distributions of the seed weevil, Ceutorhynchus assimilis (Paykull) and its parasitoid, Trichomalus perfectus (Walker), on winter oilseed rape.

GM crops, risk assessment, bees and honey

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2002. GM crops, risk assessment, bees and honey.

GM crops, bee foraging behaviour and gene flow

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2002. GM crops, bee foraging behaviour and gene flow.

Differential response of pollen beetle Meligethes aeneus to different varieties of oilseed rape

C2 - Non-edited contributions to conferences

Rasmussen, H. B., Cook, S. M., Birkett, M. A., Woodcock, C. M. and Pickett, J. A. 2002. Differential response of pollen beetle Meligethes aeneus to different varieties of oilseed rape. Abstracts 19th Annual Meeting of the International Society of Chemical Ecology, Hamburg, 3-8 August 2002 . pp. 204

Plant-to-plant communication mediating in-flight orientation of Aphidius ervi

A - Papers appearing in refereed journals

Guerrieri, E., Poppy, G. M., Powell, W., Rao, R. and Pennacchio, F. 2002. Plant-to-plant communication mediating in-flight orientation of Aphidius ervi. Journal of Chemical Ecology. 28, pp. 1703-1715.

Possibilities and constraints of agro-ecosystem diversification as a pest management strategy: a simulation approach

C1 - Edited contributions to conferences/learned societies

Potting, R. P. J., Perry, J. N. and Powell, W. 2002. Possibilities and constraints of agro-ecosystem diversification as a pest management strategy: a simulation approach. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 91-96

The role of pollen odour in the attraction of pollen beetles to oilseed rape flowers

A - Papers appearing in refereed journals

Cook, S. M., Bartlet, E., Murray, D. A. and Williams, I. H. 2002. The role of pollen odour in the attraction of pollen beetles to oilseed rape flowers. Entomologia Experimentalis et Applicata. 104 (1), pp. 43-50. https://doi.org/10.1046/j.1570-7458.2002.00989.x

Sub-lethal effects of the insecticides pirimicarb and dimethoate on the aphid parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) when attacking and developing in insecticide-resistant hosts

A - Papers appearing in refereed journals

Umoru, P. A. and Powell, W. 2002. Sub-lethal effects of the insecticides pirimicarb and dimethoate on the aphid parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) when attacking and developing in insecticide-resistant hosts. Biocontrol Science and Technology. 12, pp. 605-614.

The International Pollinator Initiative

C2 - Non-edited contributions to conferences

Williams, I. H. 2002. The International Pollinator Initiative. Proceedings 6th European Bee Conference, Cardiff, 1-5 July 2002 . pp. 37-38

MASTER: management strategies for European rape pests - a new EU project

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Buchs, W., Hokkanen, H., Menzler-Hokkanen, I., Johnen, A., Klukowski, Z., Luik, A., Nilsson, C. and Ulber, B. 2002. MASTER: management strategies for European rape pests - a new EU project. Proceedings Brighton Crop Protection Conference - Pests and Diseases 2002 . pp. 641-646

Insect pollination and crop production: a European perspective

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2002. Insect pollination and crop production: a European perspective. Kevan, P. G. and Imperatriz-Fonseca, V. L. (ed.) The Conservation Link Between Agriculture and Nature: Proceedings of the Workshop on the Conservation and Sustainable Use of Pollinators in Agriculture with Emphasis on Bees, Sao Paulo, October 1998 . pp. 59-65

Integrated pest management strategies incorporating bio-control for European oilseed rape pests

C2 - Non-edited contributions to conferences

Williams, I. H., Buchs, W., Hokkanen, H., Johnen, A., Klukowski, Z., Luik, A., Menzler-Hokkanen, I., Nilsson, C. and Ulber, B. 2002. Integrated pest management strategies incorporating bio-control for European oilseed rape pests. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 .

Cultivation of GM crops in the EU, farmland biodiversity and bees

A - Papers appearing in refereed journals

Williams, I. H. 2002. Cultivation of GM crops in the EU, farmland biodiversity and bees. Bee World. 83, pp. 119-133.

Parasitoid interactions between crop and margin habitat

C2 - Non-edited contributions to conferences

Powell, W. 2002. Parasitoid interactions between crop and margin habitat. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 . pp. 61

Spatial pattern in the distribution of pests and yield in an oilseed rape crop: implications for ICM

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Perry, J. N., Williams, I. H., Klukowski, Z., Walczak, B., Clark, S. J. and Mugglestone, M. A. 2002. Spatial pattern in the distribution of pests and yield in an oilseed rape crop: implications for ICM. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 659-664

Turnip rape (Brassica rapa) as a trap crop to protect oilseed rape (Brassica napus) from infestation by insect pests: potential and mechanisms of action

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Smart, L. E., Potting, R. J. P., Bartlet, E., Martin, J. L., Murray, D. A., Watts, N. P. and Williams, I. H. 2002. Turnip rape (Brassica rapa) as a trap crop to protect oilseed rape (Brassica napus) from infestation by insect pests: potential and mechanisms of action. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2002 . pp. 569-574

The EU regulatory framework for GM foods in relation to bee products

A - Papers appearing in refereed journals

Williams, I. H. 2002. The EU regulatory framework for GM foods in relation to bee products. Bee World. 83, pp. 78-87.

The EU regulatory framework for GM crops in relation to bees

A - Papers appearing in refereed journals

Williams, I. H. 2002. The EU regulatory framework for GM crops in relation to bees. Bee World. 83, pp. 24-35.

Bumblebees in the agricultural landscape of Estonia

A - Papers appearing in refereed journals

Mand, M., Mand, R. and Williams, I. H. 2002. Bumblebees in the agricultural landscape of Estonia. Agriculture, Ecosystems & Environment. 89, pp. 69-76.

Spatial patterns of insect pest distribution in an oilseed rape crop: relationships to plant growth and yield and significance for IPM

C2 - Non-edited contributions to conferences

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2002. Spatial patterns of insect pest distribution in an oilseed rape crop: relationships to plant growth and yield and significance for IPM. Abstracts 7th European Congress of Entomology, Thessaloniki, 7-13 October 2002 . pp. 207

Spatial pattern and the relationship between pests and plant growth in a winter oilseed rape crop

C2 - Non-edited contributions to conferences

Ferguson, A. W., Klukowski, Z., Walczak, B., Clark, S. J., Mugglestone, M. A., Perry, J. N. and Williams, I. H. 2002. Spatial pattern and the relationship between pests and plant growth in a winter oilseed rape crop. Abstracts 6th National Meeting of the Royal Entomological Society, Cardiff, 12-13 September 2002 . pp. 15-16

Management strategies for European rape pests - a new EU project

C2 - Non-edited contributions to conferences

Williams, I. H. 2002. Management strategies for European rape pests - a new EU project. Abstracts 6th National Meeting of the Royal Entomological Society, Cardiff, 12-13 September 2002 .

Identification of non-host plant volatiles repellent to pollen beetles

C2 - Non-edited contributions to conferences

Stevenson, A. L., Birkett, M. A., Woodcock, C. M., Pickett, J. A., Osborne, J. L. and Powell, W. 2002. Identification of non-host plant volatiles repellent to pollen beetles. Abstracts 19th Annual Meeting of the International Society of Chemical Ecology, Hamburg, 3-8 August 2002 .

How far do honey bees fly to fields of Brassica napus (oilseed rape)?

C2 - Non-edited contributions to conferences

Osborne, J. L., Carreck, N. L. and Williams, I. H. 2002. How far do honey bees fly to fields of Brassica napus (oilseed rape)? Abstracts Royal Entomological Society Meeting on Insect Pollination Ecology, Exeter, 4 May 2002 .

Turnip rape as a trap crop to protect oilseed rape from infestation by insect pests: potential and mechanisms of action

C2 - Non-edited contributions to conferences

Cook, S. M., Smart, L. E., Potting, R. P. J., Bartlet, E., Martin, J. L., Murray, D. A., Watts, N. P. and Williams, I. H. 2002. Turnip rape as a trap crop to protect oilseed rape from infestation by insect pests: potential and mechanisms of action. Abstracts 6th National Meeting of the Royal Entomological Society, Cardiff, 12-13 September 2002 .

Food for insect pollinators on farmland: insect visits to flowers of annual seed mixtures

A - Papers appearing in refereed journals

Carreck, N. L. and Williams, I. H. 2002. Food for insect pollinators on farmland: insect visits to flowers of annual seed mixtures. Journal of Insect Conservation. 6, pp. 13-23. https://doi.org/10.1023/A:1015764925536

Insect spatial population dynamics in winter rape: potential to reduce environmental impacts

C2 - Non-edited contributions to conferences

Warner, D. J., Allen-Williams, L. J., Ferguson, A. W. and Williams, I. H. 2002. Insect spatial population dynamics in winter rape: potential to reduce environmental impacts. Abstracts Conference on Managing the Environmental Effects of Agriculture, Coventry, 25-26 March 2002 .

The role of pollen odour in the attraction of pollen beetles to oilseed rape flowers

C2 - Non-edited contributions to conferences

Cook, S. M., Bartlet, E., Murray, D. A. and Williams, I. H. 2001. The role of pollen odour in the attraction of pollen beetles to oilseed rape flowers. Abstracts 11th International Symposium on Insect-Plant Relationships, Helsingor, Denmark, 4-10 August 2001 . pp. 34

GM crops, bee foraging behaviour and gene flow

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2001. GM crops, bee foraging behaviour and gene flow. Proceedings 37th International Apicultural Congress, Durban, 28 October-1 November 2001 .

Pollen and gene flow mediated by bees

C2 - Non-edited contributions to conferences

Williams, I. H. 2001. Pollen and gene flow mediated by bees. Abstracts 8th International Pollination Symposium, Hungary, 10-14 July 2000 .

Bee-mediated pollen and gene flow from GM plants

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2001. Bee-mediated pollen and gene flow from GM plants. International Society of Horticultural Science (ISHS).

Welcome to Symposium participants on behalf of ICPBR

C2 - Non-edited contributions to conferences

Williams, I. H. 2001. Welcome to Symposium participants on behalf of ICPBR. International Society of Horticultural Science (ISHS).

Pollination and gene flow in white clover, growing in a patchy habitat

C1 - Edited contributions to conferences/learned societies

Osborne, J. L., Williams, I. H., Marshall, A. H. and Michaelson-Yeates, T. P. T. 2001. Pollination and gene flow in white clover, growing in a patchy habitat. International Society of Horticultural Science (ISHS).

GM crops, bee foraging behaviour and gene flow

C2 - Non-edited contributions to conferences

Williams, I. H. 2001. GM crops, bee foraging behaviour and gene flow. Abstracts 37th International Apicultural Congress, Durban, 28 October-1 November 2001 . pp. 129

How far do honey bees fly to fields of Brassica napus (oilseed rape)?

C1 - Edited contributions to conferences/learned societies

Osborne, J. L., Carreck, N. L. and Williams, I. H. 2001. How far do honey bees fly to fields of Brassica napus (oilseed rape)? Proceedings 37th International Apicultural Congress, Durban, 28 October-1 November 2001 .

How far do honey bees fly to fields of Brassica napus (oilseed rape)?

C2 - Non-edited contributions to conferences

Osborne, J. L., Carreck, N. L. and Williams, I. H. 2001. How far do honey bees fly to fields of Brassica napus (oilseed rape)? Abstracts 37th International Apicultural Congress, Durban, 28 October-1 November 2001 . pp. 130

Goat's rue

A - Papers appearing in refereed journals

Carreck, N. L., Mand, M. and Williams, I. H. 2001. Goat's rue. Bee World. 82 (3), pp. 142-146. https://doi.org/10.1080/0005772X.2001.11099517

Modelling bee-mediated gene flow from genetically modified plants

G - Articles in popular magazines and other technical publications

Williams, I. H. 2001. Modelling bee-mediated gene flow from genetically modified plants.

Can aphid-induced plant signals be transmitted aerially and through the rhizosphere?

A - Papers appearing in refereed journals

Chamberlain, K., Guerrieri, E., Pennacchio, F., Pettersson, J., Pickett, J. A., Poppy, G. M., Powell, W., Wadhams, L. J. and Woodcock, C. M. 2001. Can aphid-induced plant signals be transmitted aerially and through the rhizosphere? Biochemical Systematics And Ecology. 29, pp. 1063-1074.

Site constancy of bumble bees in an experimentally patchy habitat

A - Papers appearing in refereed journals

Osborne, J. L. and Williams, I. H. 2001. Site constancy of bumble bees in an experimentally patchy habitat. Agriculture, Ecosystems & Environment. 83, pp. 129-141.

A novel mechanism for time-sorting insect catches, and its use to derive the diel flight periodicity of brassica pod midge Dasineura brassicae (Diptera: Cecidomyiidae)

A - Papers appearing in refereed journals

Murchie, A. K., Burn, D. J., Kirk, W. D. J. and Williams, I. H. 2001. A novel mechanism for time-sorting insect catches, and its use to derive the diel flight periodicity of brassica pod midge Dasineura brassicae (Diptera: Cecidomyiidae). Bulletin of Entomological Research. 91 (3), pp. 199-203. https://doi.org/10.1079/BER200189

Comparison of two field-scale approaches for the study of effects of insecticides on polyphagous predators in cereals

A - Papers appearing in refereed journals

Kennedy, P. J., Conrad, K. F., Perry, J. N., Powell, D., Aegerter, J., Todd, A. D., Walters, K. F. A. and Powell, W. 2001. Comparison of two field-scale approaches for the study of effects of insecticides on polyphagous predators in cereals. Applied Soil Ecology. 17 (3), pp. 253-266. https://doi.org/10.1016/S0929-1393(01)00142-1

Repellency of non-host plants to oilseed rape pests

C2 - Non-edited contributions to conferences

Stevenson, A. L., Osborne, J. L. and Powell, W. 2001. Repellency of non-host plants to oilseed rape pests. Abstracts British Ecological Society Winter Meeting, Birmingham, 3-5 January 2001 . pp. 56

The use of pollen cues in resource location by a pollinator and a pest

F - Theses

Cook, S. M. 2000. The use of pollen cues in resource location by a pollinator and a pest. F - Theses

A simple sequence repeat-based linkage map of barley

A - Papers appearing in refereed journals

Ramsay, L., Macaulay, M., Degli Ivanissevich, S., Maclean, K., Cardle, L., Fuller, J., Edwards, K. J., Tuvesson, S., Morgante, M., Massari, A., Maestri, E., Marmiroli, N., Sjakste, T., Ganal, M., Powell, W. and Waugh, R. 2000. A simple sequence repeat-based linkage map of barley. Genetics. 156, pp. 1997-2005.

Harmonic radar: progress in the use of this new technique to study bee flight

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Osborne, J. L., Riley, J. R., Smith, A. D., Reynolds, D. R., Carreck, N. L. and Poppy, G. M. 2000. Harmonic radar: progress in the use of this new technique to study bee flight. Proceedings 6th International Conference on Apiculture in Tropical Climates, Costa Rica, 13-19 August 1996 . International Bee Research Association - IBRA. pp. 135-139

Within-field distributions of the seed weevil, Ceutorhynchus assimilis (Paykull) and its parasitoid, Trichomalus perfectus (Walker), on winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Murchie, A. K., Ferguson, A. W., Klukowski, Z., Perry, J. N. and Walczak, B. 2000. Within-field distributions of the seed weevil, Ceutorhynchus assimilis (Paykull) and its parasitoid, Trichomalus perfectus (Walker), on winter oilseed rape.

Integrated management of pest and beneficial insects on oilseeds (Final report for MAFF project AR0203)

D1 - Technical reports: non-confidential

Williams, I. H. 2000. Integrated management of pest and beneficial insects on oilseeds (Final report for MAFF project AR0203).

Spatial relationships between a predator and pest infestation in winter rape and releveance to integrated pest management strategies

C2 - Non-edited contributions to conferences

Warner, D. J., Allen-Williams, L. J., Williams, I. H. and Perry, J. N. 2000. Spatial relationships between a predator and pest infestation in winter rape and releveance to integrated pest management strategies. Abstract Book 1: 21st International Congress of Entomology, Foz do Iguassu, Brazil, 20-26 August 2000 . pp. 94

Spatio-temporal relationships between Psylliodes chrysocephala (cabbage stem flea beetle) larvae and predatory carabid beetles in a crop of winter oilseed rape

C2 - Non-edited contributions to conferences

Warner, D. J., Allen-Williams, L. J., Ferguson, A. W. and Williams, I. H. 2000. Spatio-temporal relationships between Psylliodes chrysocephala (cabbage stem flea beetle) larvae and predatory carabid beetles in a crop of winter oilseed rape. Abstracts Entomology 2000, Liverpool, 14-15 September 2000 .

The use of field margins in the manipulation of parasitoids for aphid control in arable crops

C1 - Edited contributions to conferences/learned societies

Powell, W. 2000. The use of field margins in the manipulation of parasitoids for aphid control in arable crops. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 2000 . pp. 579-584

Aphid-induced plant volatiles influencing parasitoid behaviour

C2 - Non-edited contributions to conferences

Poppy, G. M., Powell, W., Guerrieri, E. and Pennacchio, F. 2000. Aphid-induced plant volatiles influencing parasitoid behaviour. Abstract Book 1: 21st International Congress of Entomology, Foz do Iguassu, Brazil, 20-26 August 2000 .

Host selection strategies by the aphid parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Pennacchio, F., Battaglia, D., Guerrieri, E., Poppy, G. M., Powell, W., Romano, A. and Tranfaglia, A. 2000. Host selection strategies by the aphid parasitoid Aphidius ervi. Abstracts Book 1: 21st International Congress of Entomology, Foz do Iguassu, Brazil, 20-26 August 2000 .

Principles for regulatory testing and interpretation of semi-field and field studies with non-target arthropods

A - Papers appearing in refereed journals

Candolfi, M., Bigler, F., Campbell, P., Heimbach, U., Schmuck, R., Angeli, G., Bakker, F., Brown, K., Carli, G., Dinter, A., Forti, D., Forster, R., Gathmann, A., Hassan, S., Mead-Briggs, M., Melandri, M., Neuwmann, P., Pasqualini, E., Powell, W., Reboulet, J-N., Romijn, K., Sechser, B., Thieme, Ufer, A., Vergnet, Ch. and Vogt, H. 2000. Principles for regulatory testing and interpretation of semi-field and field studies with non-target arthropods. Anzeiger fur Schadlingskunde/Journal of Pest Science. 73 (6), pp. 141-147.

Minimizing pesticide use and environmental impact by the development and promotion of bio-control strategies for oilseed rape pests. Final Report (FAIR-CT 96-1314)

D1 - Technical reports: non-confidential

Alford, D. V., Ballanger, Y., Buchi, R., Buchs, W., Ekbom, B., Hansen, L. M., Hokkanen, H. M. T., Kromp, B., Nilsson, L. C., Ulber, B., Walters, K. F. A., Williams, I. H. and Young, J. E. B. 2000. Minimizing pesticide use and environmental impact by the development and promotion of bio-control strategies for oilseed rape pests. Final Report (FAIR-CT 96-1314).

Movement of aphid parasitoids over different spatial scales studied using molecular markers

C2 - Non-edited contributions to conferences

Loxdale, H. D., Brookes, C. P. and Powell, W. 2000. Movement of aphid parasitoids over different spatial scales studied using molecular markers. Abstracts 21st International Congress of Entomology, Foz de Iguassu, Brazil, 20-26 August 2000 . pp. 2

Prospects for improving crop production with honey bees

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 2000. Prospects for improving crop production with honey bees. Proceedings 2nd International Workshop on the Conservation and Utilisation of Commercial Insects, ICIPE, Nairobi . pp. 236-251

Pest-predator spatial relationships in winter rape: implications for integrated crop management

A - Papers appearing in refereed journals

Warner, D. J., Allen-Williams, L. J., Ferguson, A. W. and Williams, I. H. 2000. Pest-predator spatial relationships in winter rape: implications for integrated crop management. Pest Management Science. 56 (11), pp. 977-982. https://doi.org/10.1002/1526-4998(200011)56:11<977::AID-PS224>3.0.CO;2-U

Fitting host-parasitoid models with CV2>1 using hierarchical generalized linear models

A - Papers appearing in refereed journals

Perry, J. N., Noh, M. S., Lee, Youngsook, Alston, R. D., Mohd Norowi, H., Powell, W. and Rennolls, K. 2000. Fitting host-parasitoid models with CV2>1 using hierarchical generalized linear models. Proceedings of the Royal Society of London Series B Biological Sciences. 267, pp. 2043-2048.

The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape

C1 - Edited contributions to conferences/learned societies

Carreck, N. L., Butt, T. M., Ibrahim, L., Pell, J. K. and Williams, I. H. 2000. The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape. International Federation of Beekeepers' Associations.

The economic value of bees in the UK (Beekeeping in a Nutshell No. 51)

G - Articles in popular magazines and other technical publications

Carreck, N. L. and Williams, I. H. 2000. The economic value of bees in the UK (Beekeeping in a Nutshell No. 51).

Physical and chemical cues influencing the oviposition behaviour of Aphidius ervi

A - Papers appearing in refereed journals

Battaglia, D., Poppy, G. M., Powell, W., Romano, A., Tranfaglia, A. and Pennacchio, F. 2000. Physical and chemical cues influencing the oviposition behaviour of Aphidius ervi. Entomologia Experimentalis et Applicata. 94 (3), pp. 219-227. https://doi.org/10.1046/j.1570-7458.2000.00623.x

The role of plant chemical cues in determining host preference in the generalist aphid parasitoid Aphidius colemani

A - Papers appearing in refereed journals

Storeck, A., Poppy, G. M., Van Emden, H. F. and Powell, W. 2000. The role of plant chemical cues in determining host preference in the generalist aphid parasitoid Aphidius colemani. Entomologia Experimentalis et Applicata. 97 (1), pp. 41-46. https://doi.org/10.1046/j.1570-7458.2000.00714.x

The spatio-temporal distribution of adult Ceutorhynchus assimilis in a crop of winter oilseed rape in relation to the distribution of their larvae and that of the parasitoid Trichomalus perfectus

A - Papers appearing in refereed journals

Ferguson, A. W., Klukowski, Z., Walczak, B., Perry, J. N., Mugglestone, M. A., Clark, S. J. and Williams, I. H. 2000. The spatio-temporal distribution of adult Ceutorhynchus assimilis in a crop of winter oilseed rape in relation to the distribution of their larvae and that of the parasitoid Trichomalus perfectus. Entomologia Experimentalis et Applicata. 95 (2), pp. 161-171. https://doi.org/10.1046/j.1570-7458.2000.00654.x

Pollination and gene flow in white clover, growing in a patchy habitat

C2 - Non-edited contributions to conferences

Osborne, J. L., Williams, I. H., Marshall, A. T. and Michaelson-Yates, T. P. T. 2000. Pollination and gene flow in white clover, growing in a patchy habitat. Abstracts 8th International Pollination Symposium, Mosonmagyarovar, Hungary, 10-14 July 2000 . pp. 15

The effect of spatial scale on interactions between two weevils and their parasitoid

A - Papers appearing in refereed journals

Mohd Norowi, Hamid, Perry, J. N., Powell, W. and Rennolls, K. 2000. The effect of spatial scale on interactions between two weevils and their parasitoid. Ecological Entomology. 25 (2), pp. 188-196. https://doi.org/10.1046/j.1365-2311.2000.00242.x

Pest-parasitoid spatial relationships in winter rape: implications for ICM

C2 - Non-edited contributions to conferences

Ferguson, A. W., Klukowski, Z., Walczak, B., Perry, J. N. and Williams, I. H. 2000. Pest-parasitoid spatial relationships in winter rape: implications for ICM. Abstracts Society of Industrial Chemistry Meeting on the Economic and Commercial Impact of Integrated Crop Management, London, 3-4 April 2000 .

Functional anatomy of sensory structures on the antennae of Psylliodes chrysocephala L. (Coleoptera: Chrysomelidae)

A - Papers appearing in refereed journals

Bartlet, E., Romani, R., Williams, I. H. and Isidoro, N. 2000. Functional anatomy of sensory structures on the antennae of Psylliodes chrysocephala L. (Coleoptera: Chrysomelidae). International Journal of Insect Morphology and Embryology. 28, pp. 291-300.

Platygaster subuliformis (Kieffer) (Hym., Platygastridae) new to Britain, an egg-larval parasitoid of the brassica pod midge, Dasineura brassica Winnertz (Dipt., Cecidomyiidae)

A - Papers appearing in refereed journals

Murchie, A. K., Polaszek, A. and Williams, I. H. 1999. Platygaster subuliformis (Kieffer) (Hym., Platygastridae) new to Britain, an egg-larval parasitoid of the brassica pod midge, Dasineura brassica Winnertz (Dipt., Cecidomyiidae). Entomologist's monthly magazine. 135, pp. 217-222.

The ideal glucosinolate profile for pest resistance in oilseed rape

C1 - Edited contributions to conferences/learned societies

Bartlet, E., Williams, I. H. and Pickett, J. A. 1999. The ideal glucosinolate profile for pest resistance in oilseed rape.

Spatio-temporal dynamics of insect distributions in oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Murchie, A. K., Ferguson, A. W., Klukowski, Z., Perry, J. N., Walczak, B., Mugglestone, M. A. and Clark, S. J. 1999. Spatio-temporal dynamics of insect distributions in oilseed rape. Proceedings 10th International Rapeseed Congress: New Horizons for an Old Crop, Canberra, 26-29 September 1999. (CD-ROM) .

Parasitoid hosts

B - Book chapters etc edited externally

Powell, W. 1999. Parasitoid hosts. in: Hardie, J. and Minks, A. K. (ed.) Pheromones of non-lepidopteran insects associated with agricultural plants Wallingford, Oxon CAB International (CABI). pp. 405-427

A bee flight room designed for studies of bee foraging behaviour

A - Papers appearing in refereed journals

Poppy, G. M. and Williams, I. H. 1999. A bee flight room designed for studies of bee foraging behaviour. Journal of Apicultural Research. 38, pp. 177-189.

Aphid-induced plant volatiles and the specific attraction of aphid parasitoids

C2 - Non-edited contributions to conferences

Poppy, G. M. and Powell, W. 1999. Aphid-induced plant volatiles and the specific attraction of aphid parasitoids. Abstracts 14th International Plant Protection Congress, Jerusalem, July 1999 .

Over what distances do honey bees fly to GM and conventional oilseed rape?

C2 - Non-edited contributions to conferences

Osborne, J. L., Carreck, N. L., Herrmann, D. and Williams, I. H. 1999. Over what distances do honey bees fly to GM and conventional oilseed rape? Abstracts British Ecological Society Winter and Annual General Meeting, Leeds, 20-22 December 1999 . pp. 72

Edge distributions of Ceutorhynchus assimilis and its parasitoid Trichomalus perfectus in a crop of winter oilseed rape (Brassica napus)

A - Papers appearing in refereed journals

Murchie, A. K., Williams, I. H. and Perry, J. N. 1999. Edge distributions of Ceutorhynchus assimilis and its parasitoid Trichomalus perfectus in a crop of winter oilseed rape (Brassica napus). BioControl. 44 (4), pp. 379-390. https://doi.org/10.1023/A:1009997917947

Induction and systemic release of herbivore-induced plant volatiles mediating in-flight orientation of Aphidius ervi

A - Papers appearing in refereed journals

Guerrieri, E., Poppy, G. M., Powell, W., Tremblay, E. and Pennacchio, F. 1999. Induction and systemic release of herbivore-induced plant volatiles mediating in-flight orientation of Aphidius ervi. Journal of Chemical Ecology. 25, pp. 1247-1261.

Responses to aphid sex pheromones by the pea aphid parasitoids Aphidius ervi and Aphidius eadyi

A - Papers appearing in refereed journals

Glinwood, R. T., Du, Y-J. and Powell, W. 1999. Responses to aphid sex pheromones by the pea aphid parasitoids Aphidius ervi and Aphidius eadyi. Entomologia Experimentalis et Applicata. 92 (2), pp. 227-232. https://doi.org/10.1046/j.1570-7458.1999.00541.x

The effect of spatial scale on interactions between two weevils and their food plant

A - Papers appearing in refereed journals

Hamid, Mohd Norowi, Perry, J. N., Powell, W. and Rennolls, K. 1999. The effect of spatial scale on interactions between two weevils and their food plant. Acta Oecologica - International journal of ecology. 20, pp. 537-549.

Pollen beetle, Meligethes aeneus Fabricius, incidence in the composite hybrid winter oilseed rape, Synergy

C1 - Edited contributions to conferences/learned societies

Cook, S. M., Murray, D. A. and Williams, I. H. 1999. Pollen beetle, Meligethes aeneus Fabricius, incidence in the composite hybrid winter oilseed rape, Synergy. Proceedings 10th International Rapeseed Congress: New Horizons for an Old Crop, Canberra, 26-29 September 1999. CD ROM and Abstract Book .

The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape

G - Articles in popular magazines and other technical publications

Carreck, N. L., Butt, T. M., Ibrahim, L., Pell, J. K. and Williams, I. H. 1999. The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape. Beekeepers News. 85, pp. 9-10.

A landscape-scale study of bumble bee foraging range and constancy, using harmonic radar

A - Papers appearing in refereed journals

Osborne, J. L., Clark, S. J., Morris, R. J., Williams, I. H., Riley, J. R., Smith, A. D., Reynolds, D. R. and Edwards, A. S. 1999. A landscape-scale study of bumble bee foraging range and constancy, using harmonic radar. Journal of Applied Ecology. 36 (4), pp. 519-533. https://doi.org/10.1046/j.1365-2664.1999.00428.x

Perception of oviposition-deterring pheromone by cabbage seed weevil (Ceutorhynchus assimilis )

A - Papers appearing in refereed journals

Ferguson, A. W., Ziesmann, J., Blight, M. M., Williams, I. H., Wadhams, L. J., Clark, S. J., Woodcock, C. M. and Mudd, A. 1999. Perception of oviposition-deterring pheromone by cabbage seed weevil (Ceutorhynchus assimilis ). Journal of Chemical Ecology. 25, pp. 1655-1670. https://doi.org/10.1023/A:1020801319251

Identification of the gland secreting oviposition-deterring pheromone in the cabbage seed weevil, Ceutorhynchus assimilis, and the mechanism of pheromone deposition

A - Papers appearing in refereed journals

Ferguson, A. W., Solinas, M., Ziesmann, J., Isidoro, N., Williams, I. H., Scubla, P., Mudd, A., Clark, S. J. and Wadhams, L. J. 1999. Identification of the gland secreting oviposition-deterring pheromone in the cabbage seed weevil, Ceutorhynchus assimilis, and the mechanism of pheromone deposition. Journal of Insect Physiology. 45 (7), pp. 687-699. https://doi.org/10.1016/S0022-1910(99)00046-3

Compensation for wind drift by bumble-bees

A - Papers appearing in refereed journals

Riley, J. R., Reynolds, D. R., Smith, A. D., Edwards, A. S., Osborne, J. L., Williams, I. H. and McCartney, H. A. 1999. Compensation for wind drift by bumble-bees. Nature. 400 (6740), p. 126. https://doi.org/10.1038/22029

Spatial population dynamics of a pest and its parasitoid in an oilseed rape crop

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Williams, I. H., Klukowski, Z., Walczak, B. and Perry, J. N. 1999. Spatial population dynamics of a pest and its parasitoid in an oilseed rape crop. Challenges in Applied Population Biology. Aspects of Applied Biology 53 . pp. 143-148

The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape

C2 - Non-edited contributions to conferences

Carreck, N. L., Butt, T. M., Ibrahim, L., Pell, J. K. and Williams, I. H. 1999. The use of honey bees to disseminate an insect pathogenic fungus for control of insect pests on oilseed rape. Proceedings 36th International Apicultural Congress, Vancouver, 12-18 September 1999 . pp. 236-237

Enhancing farmland for insect pollinators using flower mixtures

C1 - Edited contributions to conferences/learned societies

Carreck, N. L., Williams, I. H. and Oakley, J. N. 1999. Enhancing farmland for insect pollinators using flower mixtures. Field Margins and Buffer Zones: Ecology, Management and Policy. Aspects of Applied Biology 54 . Association of Applied Biologists (AAB). pp. 101-108

Honey bee mediated infection of pollen beetle (Meligethes aeneus Fab.) by the insect-pathogenic fungus, Metarhizium anisopliae

C2 - Non-edited contributions to conferences

Butt, T. M., Carreck, N. L., Ibrahim, L. and Williams, I. H. 1999. Honey bee mediated infection of pollen beetle (Meligethes aeneus Fab.) by the insect-pathogenic fungus, Metarhizium anisopliae. Abstracts Symposium on Biological Control Agents in Crop and Animal Protection, Swansea, 24-28 August 1999 .

Wound-induced increases in the glucosinolate content of oilseed rape and their effect on subsequent herbivory by a crucifer specialist

A - Papers appearing in refereed journals

Bartlet, E., Kiddle, G., Martin, A. P., Williams, I. H. and Wallsgrove, R. M. 1999. Wound-induced increases in the glucosinolate content of oilseed rape and their effect on subsequent herbivory by a crucifer specialist. Entomologia Experimentalis et Applicata. 91 (1), pp. 163-167. https://doi.org/10.1046/j.1570-7458.1999.00479.x

New techniques for studying the spatial and temporal dynamics of the foraging flights of bumble bees in relation to plant gene flow within agricultural habitats

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1999. New techniques for studying the spatial and temporal dynamics of the foraging flights of bumble bees in relation to plant gene flow within agricultural habitats. Proceedings 24th Nordic Congress of Entomology, 1999 . pp. 193-199

Aphids, predators and parasitoids

C1 - Edited contributions to conferences/learned societies

Wadhams, L. J., Birkett, M. A., Powell, W. and Woodcock, C. M. 1999. Aphids, predators and parasitoids. Goode, J. A. and Chadwick, D. J. (ed.) Insect-plant Interactions and Induced Plant Defence. Novartis Foundation Symposium 223 . John Wiley & Sons Chichester, West Sussex. pp. 60-73

Sex attractant for the male antler moth Cerapteryx graminis (L.)

C1 - Edited contributions to conferences/learned societies

Mottus, E., Liblikas, I. and Williams, I. H. 1999. Sex attractant for the male antler moth Cerapteryx graminis (L.). Proceedings 24th Nordic Congress of Entomology, Tartu, Estonia, 8-11 August 1997 . pp. 117-123

How busy are bees - modelling the pollination of clover

G - Articles in popular magazines and other technical publications

Marshall, A., Michaelson-Yeates, T. P. T. and Williams, I. H. 1999. How busy are bees - modelling the pollination of clover. IGER Innovations. No. 3, pp. 18-21.

Comparative responses of parasitoids to synthetic and plant-extracted nepetalactone component of aphid sex pheromones

A - Papers appearing in refereed journals

Glinwood, R. T., Du, Y-J., Smiley, D. W. M. and Powell, W. 1999. Comparative responses of parasitoids to synthetic and plant-extracted nepetalactone component of aphid sex pheromones. Journal of Chemical Ecology. 25, pp. 1481-1488.

The economic value of bees in the UK

G - Articles in popular magazines and other technical publications

Carreck, N. L. and Williams, I. H. 1999. The economic value of bees in the UK. Bee Farmers' Association Bulletin. 317, pp. 21-28. https://doi.org/10.1080/0005772X.1998.11099393

The effects of habitat fragmentation on pollination and gene flow in white clover

C2 - Non-edited contributions to conferences

Osborne, J. L., Williams, I. H., Marshall, A. H. and Michaelson-Yeates, T. P. T. 1999. The effects of habitat fragmentation on pollination and gene flow in white clover. Abstracts British Ecological Society Winter and Annual General Meeting, Leicester, 5-8 January 1999 .

Spatial aspects in modelling pest-crop interactions

C1 - Edited contributions to conferences/learned societies

Mohd Norowi, H., Perry, J. N., Powell, W. and Rennolls, K. 1999. Spatial aspects in modelling pest-crop interactions. Proceedings 5th International Conference on Plant Protection in the Tropics, Kuala Lumpur, 15-18 March 1999 . Malaysian Plant Protection Society, Kuala Lumpur, Malaysia. pp. 29-34

Aphid sex pheromones: manipulation of beneficial insects for aphid population control

C1 - Edited contributions to conferences/learned societies

Glinwood, R. T., Smiley, D. W. M., Hardie, J., Pickett, J. A., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1999. Aphid sex pheromones: manipulation of beneficial insects for aphid population control. Wiley.

Aphid sex pheromones: manipulation of beneficial insects for aphid population control

C2 - Non-edited contributions to conferences

Glinwood, R., Smiley, D. W. M., Hardie, J., Pickett, J. A., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1998. Aphid sex pheromones: manipulation of beneficial insects for aphid population control. Abstracts 9th International Congress on Pesticide Chemistry: the Food-Environment Challenge, London, 2-7 August 1998 . pp. 3D-002

Bee-mediated control of pollen beetles by Metarhizium anisopilae

C2 - Non-edited contributions to conferences

Carreck, N. L., Butt, T. M., Ibrahim, L. and Williams, I. H. 1998. Bee-mediated control of pollen beetles by Metarhizium anisopilae. Abstracts International Symposium on the Future of Fungi in the Control of Pests, Weeds and Diseases, Southampton, 5-9 April 1998 . pp. 106

Assessment of risks posed by pesticides to non-target arthropods

C2 - Non-edited contributions to conferences

Birnie, L. C., Kennedy, P. J., Shaw, K. E., Denholm, I., Perry, J. N. and Powell, W. 1998. Assessment of risks posed by pesticides to non-target arthropods. Abstracts 9th International Congress on Pesticide Chemistry: the Food-Environment Challenge, London, 2-7 August 1998 . pp. 8B-025

Pest control by a community of natural enemies

C1 - Edited contributions to conferences/learned societies

Sunderland, K. D., Axelsen, J. A., Dromph, K., Freier, B., Hemptinne, J-L., Holst, N. H., Mols, P. J. M., Petersen, M. K., Powell, W., Ruggle, P., Triltsch, H. and Winder, L. 1998. Pest control by a community of natural enemies.

The complementary roles of laboratory and field testing in ecotoxicological risk assessment

C1 - Edited contributions to conferences/learned societies

Denholm, I., Birnie, L. C., Kennedy, P. J., Shaw, K. E., Perry, J. N. and Powell, W. 1998. The complementary roles of laboratory and field testing in ecotoxicological risk assessment. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1998 . pp. 583-590

Honey-bee-mediated infection of pollen beetle (Meligethes aeneus Fab.) by the insect-pathogenic fungus, Metarhizium anisopliae

A - Papers appearing in refereed journals

Butt, T. M., Carreck, N. L., Ibrahim, L. and Williams, I. H. 1998. Honey-bee-mediated infection of pollen beetle (Meligethes aeneus Fab.) by the insect-pathogenic fungus, Metarhizium anisopliae. Biocontrol Science and Technology. 8 (4), pp. 533-538. https://doi.org/10.1080/09583159830045

Direct and indirect effects of transgenic potatoes expressing the snowdrop lectin (GNA) on the aphid parasitoid, Aphidius ervi

C2 - Non-edited contributions to conferences

Couty, A., Poppy, G. M., Powell, W. and Gatehouse, A. M. R. 1998. Direct and indirect effects of transgenic potatoes expressing the snowdrop lectin (GNA) on the aphid parasitoid, Aphidius ervi. Abstracts 10th International Symposium on Insect-Plant Relationships, Oxford, 4-11 July 1998 . pp. 55

A bibliography of the parasitoids of the cabbage seed weevil (Ceutorhynchus assimilis PAYK.)

C1 - Edited contributions to conferences/learned societies

Murchie, A. K. and Williams, I. H. 1998. A bibliography of the parasitoids of the cabbage seed weevil (Ceutorhynchus assimilis PAYK.).

The effect of trap design and 2-phenylethyl isothiocyanate on catches of stem weevils (Ceutorhynchus pallidactylus Marsh. and C. napi Gyll.) in winter oilseed rape

C1 - Edited contributions to conferences/learned societies

Walczak, B., Kelm, M., Klukowski, Z., Smart, L. E., Ferguson, A. W. and Williams, I. H. 1998. The effect of trap design and 2-phenylethyl isothiocyanate on catches of stem weevils (Ceutorhynchus pallidactylus Marsh. and C. napi Gyll.) in winter oilseed rape.

Effect of host size on the sex of Trichomalus perfectus (Walker) (Hymenoptera: Pteromalidae)

C1 - Edited contributions to conferences/learned societies

Murchie, A. K. and Williams, I. H. 1998. Effect of host size on the sex of Trichomalus perfectus (Walker) (Hymenoptera: Pteromalidae).

Aphid sex pheromones to enhance parasitoid efficiency (Home-Grown Cereals Authority Project Report No. 155)

D1 - Technical reports: non-confidential

Powell, W. and Glinwood, R. T. 1998. Aphid sex pheromones to enhance parasitoid efficiency (Home-Grown Cereals Authority Project Report No. 155). H-GCA, London.

Insect-plant interactions: pollinators and pests

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1998. Insect-plant interactions: pollinators and pests. Bournoville, R. (ed.) Interactions Insectes-plantes: Actes 6e Journees du Groupe de Travail Relations Insectes-plantes, Lusignan, 4-5 Juin 1997 . pp. 9-12

Semiochemicals to increase parasitism in aphid pest control

C1 - Edited contributions to conferences/learned societies

Powell, W. 1998. Semiochemicals to increase parasitism in aphid pest control. Wiley. https://doi.org/10.1002/(SICI)1096-9063(1998110)54:3<291::AID-PS804>3.0.CO;2-9

Antennal contact chemosensilla in Psylliodes chrysocephala responding to cruciferous allelochemicals

A - Papers appearing in refereed journals

Isidoro, N., Bartlet, E., Ziesmann, J. and Williams, I. H. 1998. Antennal contact chemosensilla in Psylliodes chrysocephala responding to cruciferous allelochemicals. Physiological Entomology. 23 (2), pp. 131-138. https://doi.org/10.1046/j.1365-3032.1998.232066.x

Increased parasitization of aphids on trap plants alongside vials releasing synthetic aphid sex pheromone and effective range of the pheromone

A - Papers appearing in refereed journals

Glinwood, R. T., Powell, W. and Tripathi, C. P. M. 1998. Increased parasitization of aphids on trap plants alongside vials releasing synthetic aphid sex pheromone and effective range of the pheromone. Biocontrol Science and Technology. 8 (4), pp. 607-614. https://doi.org/10.1080/09583159830126

Growth stimulation of beetle larvae reared on a transgenic oilseed rape expressing a cysteine proteinase inhibitor

A - Papers appearing in refereed journals

Girard, C., Le Metayer, M., Zaccomer, B., Bartlet, E., Williams, I. H., Bonade-Bottino, M., Pham-Delegue, M-H. and Jouanin, L. 1998. Growth stimulation of beetle larvae reared on a transgenic oilseed rape expressing a cysteine proteinase inhibitor. Journal of Insect Physiology. 44, pp. 263-270.

Identification of semiochemicals released during aphid feeding that attract parasitoid Aphidius ervi

A - Papers appearing in refereed journals

Du, Y., Poppy, G. M., Powell, W., Pickett, J. A., Wadhams, L. J. and Woodcock, C. M. 1998. Identification of semiochemicals released during aphid feeding that attract parasitoid Aphidius ervi. Journal of Chemical Ecology. 24, pp. 1355-1368.

The economic value of bees in the UK

A - Papers appearing in refereed journals

Carreck, N. L. and Williams, I. H. 1998. The economic value of bees in the UK. Bee World. 79, pp. 115-123. https://doi.org/10.1080/0005772X.1998.11099393

The flightless aphid

G - Articles in popular magazines and other technical publications

Williams, I. H. and Dewar, A. M. 1998. The flightless aphid. British Sugar Beet Review. 66(2), pp. 35-37.

Strategies involved in the location of hosts by the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae)

A - Papers appearing in refereed journals

Powell, W., Pennacchio, F., Poppy, G. M. and Tremblay, E. 1998. Strategies involved in the location of hosts by the parasitoid Aphidius ervi Haliday (Hymenoptera: Braconidae: Aphidiinae). Biological Control. 11, pp. 104-112.

Electrophoretic study of five aphid parasitoid species of the genus Aphidius (Hymenoptera: Braconidae), including evidence for reproductively isolated sympatric populations and a cryptic species

A - Papers appearing in refereed journals

Atanassova, P., Brookes, C. P., Loxdale, H. D. and Powell, W. 1998. Electrophoretic study of five aphid parasitoid species of the genus Aphidius (Hymenoptera: Braconidae), including evidence for reproductively isolated sympatric populations and a cryptic species. Bulletin of Entomological Research. 88 (1), pp. 3-13. https://doi.org/10.1017/S000748530004150X

White clover: honey bees v. bumble bees as pollinators

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1997. White clover: honey bees v. bumble bees as pollinators. Proceedings 35th International Apicultural Congress, Antwerp, 1-6 September 1997 . pp. 335-339

The use of single-species spatially explicit models

C1 - Edited contributions to conferences/learned societies

Topping, C. J., Booij, K., Daamen, R. A., Dinter, A., Heimbach, U., Kennedy, P. J., Langer, V., Perry, J. N., Powell, W., Skirvin, D., Stilmant, D., Thomas, C. F. G. and Winstone, L. 1997. The use of single-species spatially explicit models.

The responses of the cabbage seed weevil Ceutorhynchus assimilis to volatile compounds from oilseed rape in a linear track olfactometer

A - Papers appearing in refereed journals

Bartlet, E., Blight, M. M., Lane, P. W. and Williams, I. H. 1997. The responses of the cabbage seed weevil Ceutorhynchus assimilis to volatile compounds from oilseed rape in a linear track olfactometer. Entomologia Experimentalis et Applicata. 85 (3), pp. 257-262. https://doi.org/10.1046/j.1570-7458.1997.00256.x

Herbivore-induced synomones regulating the flight behaviour of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae)

C2 - Non-edited contributions to conferences

Poppy, G. M., Guerrieri, E., Powell, W., Pennacchio, F. and Tremblay, E. 1997. Herbivore-induced synomones regulating the flight behaviour of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae). Abstracts 6th European Workshop on Insect Parasitoids, Valencia, March 1997 .

Aphid-induced plant synomones affecting the foraging behaviour of the parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Poppy, G. M., Guerrieri, E., Powell, W. and Pennacchio, F. 1997. Aphid-induced plant synomones affecting the foraging behaviour of the parasitoid Aphidius ervi. Abstracts Entomology '97, Newcastle, 10-12 September 1997 .

Physical and chemical cues regulating the oviposition behaviour of Aphidius ervi Haliday (Hymenoptera: Braconidae)

C2 - Non-edited contributions to conferences

Battaglia, D., Pennacchio, F., Poppy, G. M., Powell, W., Romano, A. and Tranfaglia, A. 1997. Physical and chemical cues regulating the oviposition behaviour of Aphidius ervi Haliday (Hymenoptera: Braconidae). Abstracts 6th European Workshop on Insect Parasitoids, Valencia, March 1997 .

The movement of honey bee colonies for crop pollination and honey production by beekeepers in Great Britain

A - Papers appearing in refereed journals

Carreck, N. L., Williams, I. H. and Little, D. J. 1997. The movement of honey bee colonies for crop pollination and honey production by beekeepers in Great Britain. Bee World. 78, pp. 67-77.

Chemically mediated associative learning in the host foraging behavior of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae)

A - Papers appearing in refereed journals

Du, Y., Poppy, G. M., Powell, W. and Wadhams, L. J. 1997. Chemically mediated associative learning in the host foraging behavior of the aphid parasitoid Aphidius ervi (Hymenoptera: Braconidae). Journal of Insect Behavior. 10, pp. 509-522.

Insect injury to linseed in south-east England

A - Papers appearing in refereed journals

Ferguson, A. W., Fitt, B. D. L. and Williams, I. H. 1997. Insect injury to linseed in south-east England. Crop Protection. 16 (7), pp. 643-652. https://doi.org/10.1016/S0261-2194(97)00045-8

Optimization of pheromone dispensers for diamondback moth Plutella xylostella

A - Papers appearing in refereed journals

Mottus, E., Nomm, V., Williams, I. H. and Liblikas, I. 1997. Optimization of pheromone dispensers for diamondback moth Plutella xylostella. Journal of Chemical Ecology. 23, pp. 2145-2159.

Aphid parasitoid responses to semiochemicals - genetic, conditioned or learnt?

A - Papers appearing in refereed journals

Poppy, G. M., Powell, W. and Pennacchio, F. 1997. Aphid parasitoid responses to semiochemicals - genetic, conditioned or learnt? Entomophaga. 42, pp. 193-199.

Responses of Dasineura brassicae and its parasitoids Platygaster subuliformis and Omphale clypealis to field traps baited with organic isothiocyanates

A - Papers appearing in refereed journals

Murchie, A. K., Smart, L. E. and Williams, I. H. 1997. Responses of Dasineura brassicae and its parasitoids Platygaster subuliformis and Omphale clypealis to field traps baited with organic isothiocyanates. Journal of Chemical Ecology. 23, pp. 917-926.

The use of isoenzyme markers to determine pollen flow and seed paternity mediated by Apis mellifera and Bombus spp. in Trifolium repens , a self-incompatible plant species

A - Papers appearing in refereed journals

Michaelson-Yeates, T. P. T., Marshall, A. H., Williams, I. H., Carreck, N. L. and Simpkins, J. R. 1997. The use of isoenzyme markers to determine pollen flow and seed paternity mediated by Apis mellifera and Bombus spp. in Trifolium repens , a self-incompatible plant species. Journal of Apicultural Research. 36 (2), pp. 57-62. https://doi.org/10.1080/00218839.1997.11100931

Sublethal effects of pesticides on locomotory behaviour of beneficial arthropods

C1 - Edited contributions to conferences/learned societies

Kennedy, P. J., Umoru, P. A. and Powell, W. 1997. Sublethal effects of pesticides on locomotory behaviour of beneficial arthropods. Haskell, P. T. and McEwen, P. K. (ed.) New studies in ecotoxicology . Welsh Pest Management Forum. pp. 37-41

Extraction, isolation and composition of oviposition-deterring secretion of cabbage seed weevil Ceutorhynchus assimilis

A - Papers appearing in refereed journals

Mudd, A., Ferguson, A. W., Blight, M. M., Williams, I. H., Scubla, P., Solinas, M. and Clark, S. J. 1997. Extraction, isolation and composition of oviposition-deterring secretion of cabbage seed weevil Ceutorhynchus assimilis. Journal of Chemical Ecology. 23, pp. 2227-2240. https://doi.org/10.1023/B:JOEC.0000006441.74950.2f

Siring efficiency in white clover (Trifolium repens )

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Marshall, A. H. and Michaelson-Yeates, T. P. T. 1997. Siring efficiency in white clover (Trifolium repens ). International Society of Horticultural Science (ISHS).

Effects of commercial insecticide treatments to winter oilseed rape on parasitism of Ceutorhynchus assimilis Paykull (Coleoptera: Curculionidae) by Trichomalus perfectus (Walker) (Hymenoptera: Pteromalidae)

A - Papers appearing in refereed journals

Murchie, A. K., Williams, I. H. and Alford, D. V. 1997. Effects of commercial insecticide treatments to winter oilseed rape on parasitism of Ceutorhynchus assimilis Paykull (Coleoptera: Curculionidae) by Trichomalus perfectus (Walker) (Hymenoptera: Pteromalidae). Crop Protection. 16, pp. 199-202.

Observations on two commercial flower mixtures as food sources for beneficial insects in the UK

A - Papers appearing in refereed journals

Carreck, N. L. and Williams, I. H. 1997. Observations on two commercial flower mixtures as food sources for beneficial insects in the UK. The Journal of Agricultural Science. 128 (4), pp. 397-403. https://doi.org/10.1017/S0021859697004279

'Push-Pull' strategies for pest control

G - Articles in popular magazines and other technical publications

Smart, L. E., Pickett, J. A. and Powell, W. 1997. 'Push-Pull' strategies for pest control. Grain Legumes. No. 15, pp. 14-15.

The occurrence of aphid parasitoids in arable crops in northern Pakistan

C2 - Non-edited contributions to conferences

Rehman, A., Powell, W., Deadman, M. L. and Hashmi, A. A. 1997. The occurrence of aphid parasitoids in arable crops in northern Pakistan. Abstracts 3rd International Congress of Entomological Sciences, Islamabad, 18-20 March 1997 .

Nectar and flower production in Vicia faba L. (field bean) at ambient and elevated carbon dioxide

A - Papers appearing in refereed journals

Osborne, J. L., Awmack, C. S., Clark, S. J., Williams, I. H. and Mills, V. C. 1997. Nectar and flower production in Vicia faba L. (field bean) at ambient and elevated carbon dioxide. Apidologie. 28, pp. 43-55. https://doi.org/10.1051/apido:19970105

Harmonic radar: a new technique for investigating bumblebee and honey bee foraging flight

C1 - Edited contributions to conferences/learned societies

Osborne, J. L., Williams, I. H., Carreck, N. L., Poppy, G. M., Riley, J. R., Smith, A. D., Reynolds, D. R. and Edwards, A. S. 1997. Harmonic radar: a new technique for investigating bumblebee and honey bee foraging flight. International Society of Horticultural Science (ISHS).

Performance of Cydia pomonella , Argyresthia conjugella , Plutella xylostella and Archips podana attractant dispensers in Estonia

C1 - Edited contributions to conferences/learned societies

Mottus, E., Liblikas, I., Williams, I. H., Kuusik, S., Laanmaa, M., Nilson, A. and Nomm, V. 1996. Performance of Cydia pomonella , Argyresthia conjugella , Plutella xylostella and Archips podana attractant dispensers in Estonia.

The use of harmonic radar to track insects flying at low altitude

C2 - Non-edited contributions to conferences

Riley, J. R., Smith, A. D., Reynolds, D. R., Edwards, A., Osborne, J. L., Williams, I. H., Carreck, N. L. and Poppy, G. M. 1996. The use of harmonic radar to track insects flying at low altitude. In Abstracts 5th European Conference on Wildlife Telemetry, Strasbourg, August 1996 .

Influence of wheat and oat cultivars on the development of the cereal aphid parasitoid Aphidius rhopalosiphi and the generalist aphid parasitoid Ephedrus plagiator

A - Papers appearing in refereed journals

Fuentes-Contreras, J. E., Powell, W., Wadhams, L. J., Pickett, J. A. and Niemeyer, H. M. 1996. Influence of wheat and oat cultivars on the development of the cereal aphid parasitoid Aphidius rhopalosiphi and the generalist aphid parasitoid Ephedrus plagiator. Annals of Applied Biology - AAB. 128 (2), pp. 181-187. https://doi.org/10.1111/j.1744-7348.1996.tb05742.x

The conservation of bees (Linnean Society Symposium series 18)

E - Books edited/written by staff member, alone/with others

Matheson, A., Buchmann, S. L., O'toole, C., Westrich, P. and Williams, I. H. 1996. The conservation of bees (Linnean Society Symposium series 18). Academic Press, London.

Host preference behaviour of the aphid parasitoids Praon volucre and Praon myzophagum (Hymenoptera: Aphidiidae)

C2 - Non-edited contributions to conferences

Rehman, A., Powell, W. and Deadman, M. L. 1996. Host preference behaviour of the aphid parasitoids Praon volucre and Praon myzophagum (Hymenoptera: Aphidiidae). Abstracts 2nd International Congress of Entomological Sciences, Islamabad, 19-21 March 1996 . pp. 69-70

Parasitoid responses to semiochemicals - innate, conditioned or learnt?

C2 - Non-edited contributions to conferences

Poppy, G. M., Powell, W. and Pennacchio, F. 1996. Parasitoid responses to semiochemicals - innate, conditioned or learnt? Proceedings Aphidophaga 6, Gembloux, 2-6 September 1996 .

Reproduction of beneficial predators and parasitoids in agroecosystems in relation to habitat quality and food availability

A - Papers appearing in refereed journals

Sunderland, K. D., Bilde, T., Den Nijs, L. J. M. F., Dinter, A., Heimbach, U., Lys, J. A., Powell, W. and Toft, S. 1996. Reproduction of beneficial predators and parasitoids in agroecosystems in relation to habitat quality and food availability. Acta Jutlandica. 71(2), pp. 117-153.

Genetic influences on aphid parasitoid host selection

C2 - Non-edited contributions to conferences

Powell, W. and Rehman. A. 1996. Genetic influences on aphid parasitoid host selection.

Putuktolmendajad kui tahtsaim loodusresurss bioloogilise mitme keisuse ja loodussaastliku pollukajanduse tagamisel

C2 - Non-edited contributions to conferences

Williams, I. H., Martin, A. J. and Mand, M. 1996. Putuktolmendajad kui tahtsaim loodusresurss bioloogilise mitme keisuse ja loodussaastliku pollukajanduse tagamisel. Abstracts Congress of Estonian Scientists, Tallinn, 11-15 August 1996 . pp. 395

Strategies involved in the location of hosts by the aphid parasitoid Aphidius ervi Halliday (Hymenoptera: Braconidae: Aphidiinae)

C2 - Non-edited contributions to conferences

Powell, W., Pennacchio, F., Poppy, G. M. and Tremblay, E. 1996. Strategies involved in the location of hosts by the aphid parasitoid Aphidius ervi Halliday (Hymenoptera: Braconidae: Aphidiinae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 623

Harmonic radar: a new technique for investigating bumble bee and honey bee foraging flight

C2 - Non-edited contributions to conferences

Osborne, J. L., Williams, I. H., Carreck, N. L., Poppy, G. M., Riley, J. R., Smith, A. D., Reynolds, D. R. and Edwards, A. 1996. Harmonic radar: a new technique for investigating bumble bee and honey bee foraging flight. Abstracts 7th International Pollination Symposium, Lethbridge, Canada, 23-28 June 1996 .

Nectar and flower production in Vicia faba L. (field bean) at elevated carbon dioxide

C2 - Non-edited contributions to conferences

Osborne, J. L., Awmack, C. S., Clark, S. J., Williams, I. H. and Mills, V. C. 1996. Nectar and flower production in Vicia faba L. (field bean) at elevated carbon dioxide. Abstracts 7th International Pollination Symposium, Lethbridge, Canada, 23-28 June 1996 .

Okokemikaalid kasutamiseks eesti taimekaitses

C2 - Non-edited contributions to conferences

Mottus, E., Liblikas, I., Williams, I. H., Nilson, A. and Laanmaa, M. 1996. Okokemikaalid kasutamiseks eesti taimekaitses. Abstracts Congress of Estonian Scientists, Tallinn, 11-15 August 1996 . pp. 370

Ecochemicals as attraction for diamondback moth (Plutella xylostella ) and cabbage root fly (Delia floralis )

C1 - Edited contributions to conferences/learned societies

Mottus, E., Liblikas, I., Nomm, V., Siitan, V., Williams, I. H. and Nilson, A. 1996. Ecochemicals as attraction for diamondback moth (Plutella xylostella ) and cabbage root fly (Delia floralis ).

The role of host-induced plant synomones on in-flight orientation of the aphid parasitoid Aphidius ervi Haliday (Hymenoptera, Braconidae)

C2 - Non-edited contributions to conferences

Guerrieri, E., Du, Y.J., Poppy, G. M., Powell, W., Pennacchio, F. and Tremblay, E. 1996. The role of host-induced plant synomones on in-flight orientation of the aphid parasitoid Aphidius ervi Haliday (Hymenoptera, Braconidae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 647

Relative importance of semiochemicals from first and second trophic levels in host foraging behaviour of Aphidius ervi

A - Papers appearing in refereed journals

Du, Y.J., Poppy, G. M. and Powell, W. 1996. Relative importance of semiochemicals from first and second trophic levels in host foraging behaviour of Aphidius ervi. Journal of Chemical Ecology. 22, pp. 1591-1605.

Colour vision and oviposition behaviour in Aphidius ervi Haliday (Hymenoptera, Braconidae)

C2 - Non-edited contributions to conferences

Battaglia, D., Pennacchio, F., Romano, A., Tranfaglia, A., Poppy, G. M. and Powell, W. 1996. Colour vision and oviposition behaviour in Aphidius ervi Haliday (Hymenoptera, Braconidae). Proceedings 20th International Congress of Entomology, Firenze, 25-31 August 1996 . pp. 647

A commercially viable, low-cost strategy for the management of seed weevil populations on winter oilseed rape in the UK

C1 - Edited contributions to conferences/learned societies

Alford, D. V., Walters, K. F. A., Williams, I. H. and Murchie, A. K. 1996. A commercially viable, low-cost strategy for the management of seed weevil populations on winter oilseed rape in the UK. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1996 . pp. 609-614

Aspects of bee diversity and crop pollination in the European Union

B - Book chapters etc edited externally

Williams, I. H. 1996. Aspects of bee diversity and crop pollination in the European Union. in: Matheson, A. (ed.) The conservation of bees (Linnean Society Symposium Series 18) Academic Press, London. pp. 63-80

The foraging efficiency of the parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) in relation to the spatial distribution of aphids on plants

A - Papers appearing in refereed journals

Powell, W. and Nickless, A. 1996. The foraging efficiency of the parasitoid Diaeretiella rapae (Hymenoptera: Braconidae) in relation to the spatial distribution of aphids on plants. Acta Jutlandica. 71(2), pp. 97-106.

Bumble bees as pollinators of crops and wild flowers

B - Book chapters etc edited externally

Osborne, J. L. and Williams, I. H. 1996. Bumble bees as pollinators of crops and wild flowers. in: Matheson, A. (ed.) Bumble bees for pleasure and profit International Bee Research Association, (IBRA), Cardiff. pp. 24-32

Sex pheromone of aphid parasitoid Praon volucre (Hymenoptera, Braconidae)

A - Papers appearing in refereed journals

Nazzi, F., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1996. Sex pheromone of aphid parasitoid Praon volucre (Hymenoptera, Braconidae). Journal of Chemical Ecology. 22, pp. 1169-1175.

Tracking bees with harmonic radar

A - Papers appearing in refereed journals

Riley, J. R., Smith, A. D., Reynolds, D. R., Edwards, A. S., Osborne, J. L., Williams, I. H., Carreck, N. L. and Poppy, G. M. 1996. Tracking bees with harmonic radar. Nature. 379 (6560), pp. 29-30. https://doi.org/10.1038/379029b0

Aphid attack - working on the insides

G - Articles in popular magazines and other technical publications

Powell, W. 1996. Aphid attack - working on the insides. Farming and Conservation. April 1996, pp. 12-14.

Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants

A - Papers appearing in refereed journals

Umoru, P. A., Powell, W. and Clark, S. J. 1996. Effect of pirimicarb on the foraging behaviour of Diaeretiella rapae (Hymenoptera: Braconidae) on host-free and infested oilseed rape plants. Bulletin of Entomological Research. 86 (2), pp. 193-201. https://doi.org/10.1017/S0007485300052445

Fatal attraction

G - Articles in popular magazines and other technical publications

Powell, W. 1995. Fatal attraction. Grower. 124(5), pp. 17-18.

The use of isoenzymes to quantify the efficiency of insect pollinators in mediating pollen flow in white clover (Trifolium repens L.) seed crops and consequences for seed yield

C1 - Edited contributions to conferences/learned societies

Marshall, A. H., Michaelson-Yeates, T. P. T. and Williams, I. H. 1995. The use of isoenzymes to quantify the efficiency of insect pollinators in mediating pollen flow in white clover (Trifolium repens L.) seed crops and consequences for seed yield. Yield and Quality in Herbage Seed Production. Proceedings 3rd International Herbage Seed Conference, Halle, 18-23 June, 1995 . pp. 59-63

The status and potential of parasitoids of seed weevil and pod midge on winter oilseed rape. Home-Grown Cereals Authority Oilseeds Project Report OS14

D1 - Technical reports: non-confidential

Alford, D. V., Williams, I. H., Murchie, A. K. and Walters, K. F. A. 1995. The status and potential of parasitoids of seed weevil and pod midge on winter oilseed rape. Home-Grown Cereals Authority Oilseeds Project Report OS14. H-GCA, London.

Changes in growth and yield parameters of winter rape as a result of injury by the stem weevil (Ceutorhynchus quadridens )

C1 - Edited contributions to conferences/learned societies

Kelm, M., Walczak, M. and Williams, I. H. 1995. Changes in growth and yield parameters of winter rape as a result of injury by the stem weevil (Ceutorhynchus quadridens ). Rapeseed Today and Tomorrow. Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 . pp. 673-675

Responses of brassica pod midge (Dasineura brassicae ) and its parasitoids (Platygaster sp.) to isothiocyanates

C1 - Edited contributions to conferences/learned societies

Murchie, A. K., Williams, I. H. and Smart, L. E. 1995. Responses of brassica pod midge (Dasineura brassicae ) and its parasitoids (Platygaster sp.) to isothiocyanates. Rapeseed Today and Tomorrow. Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 . pp. 1028-1030

Field experiments to assess the status and importance of Trichomalus perfectus , a parasitoid of seed weevil on winter oilseed rape in the UK

C1 - Edited contributions to conferences/learned societies

Alford, D. V., Emmett, B. J., Green, M. R., Murchie, A. K., Williams, I. H., Raw, K. A. and Walters, K. F. A. 1995. Field experiments to assess the status and importance of Trichomalus perfectus , a parasitoid of seed weevil on winter oilseed rape in the UK. Rapeseed Today and Tomorrow. Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 . pp. 1301-1303

A history of beekeeping in Estonia

A - Papers appearing in refereed journals

Williams, I. H., Padjus, P., Parn, E., Rootslane, M. and Susi, J. 1995. A history of beekeeping in Estonia. Bee World. 76, pp. 18-30.

Observations on the impact of standard insecticide treatments of Trichomalus perfectus , a parasitoid of seed weevil on winter oilseed rape in the UK

C1 - Edited contributions to conferences/learned societies

Alford, D. V., Murchie, A. and Williams, I. H. 1995. Observations on the impact of standard insecticide treatments of Trichomalus perfectus , a parasitoid of seed weevil on winter oilseed rape in the UK.

Interactions between the cabbage seed weevil (Ceutorhynchus assimilis Payk.) and the brassica pod midge (Dasineura brassicae Winn.) infesting oilseed rape pods

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W., Kenward, M. G., Williams, I. H., Clark, S. J., Kelm, M. and Dudzic, A. 1995. Interactions between the cabbage seed weevil (Ceutorhynchus assimilis Payk.) and the brassica pod midge (Dasineura brassicae Winn.) infesting oilseed rape pods. Rapeseed Today and Tomorrow. Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 . pp. 679-681

Populations and communities

B - Book chapters etc edited externally

Powell, W. and Walton, M. P. 1995. Populations and communities. in: Jervis, M. A. and Kidd, N. (ed.) Insect natural enemies: practical approaches to their study and evaluation Chapman & Hall, London. pp. 223-292

The role of parasitoids

G - Articles in popular magazines and other technical publications

Williams, I. H. and Murchie, A. 1995. The role of parasitoids. Agronomist. Spring 1995, pp. 13-15.

Within-field spatial heterogeneity of arthropod predators and parasitoids

C1 - Edited contributions to conferences/learned societies

Powell, W., Hawthorne, A., Hemptinne, J. L., Holopainen, J. K., Den Nijs, L. J. F. M., Riedel, W. and Ruggle, P. 1995. Within-field spatial heterogeneity of arthropod predators and parasitoids.

Using mark-release-recapture techniques to study the influence of spatial heterogeneity on carabids

C1 - Edited contributions to conferences/learned societies

Powell, W. and Ashby, J. E. 1995. Using mark-release-recapture techniques to study the influence of spatial heterogeneity on carabids.

Variations of body length, weight, fat content and survival in Coccinella septempunctata at different hibernation sites

A - Papers appearing in refereed journals

Zhou, X-L, Honek, A., Powell, W. and Carter, N. 1995. Variations of body length, weight, fat content and survival in Coccinella septempunctata at different hibernation sites. Entomologia Experimentalis et Applicata. 75 (2), pp. 99-107.

Minimising pesticide input in oilseed rape by exploiting natural regulatory processes

C1 - Edited contributions to conferences/learned societies

Pickett, J. A., Butt, T. M., Doughty, K. J., Wallsgrove, R. M. and Williams, I. H. 1995. Minimising pesticide input in oilseed rape by exploiting natural regulatory processes. Rapeseed Today and Tomorrow: Proceedings 9th International Rapeseed Congress, Cambridge, 4-7 July 1995 .

Effects of incorporating or burning straw, and of different cultivation systems, on winter wheat grown on two soil types, 1985-91

A - Papers appearing in refereed journals

Prew, R. D., Ashby, J. E., Bacon, E. T. G., Christian, D. G., Gutteridge, R. J., Jenkyn, J. F., Powell, W. and Todd, A. D. 1995. Effects of incorporating or burning straw, and of different cultivation systems, on winter wheat grown on two soil types, 1985-91. The Journal of Agricultural Science. 124 (2), pp. 173-194. https://doi.org/10.1017/S0021859600072853

An investigation of intra-crop and inter-crop contamination of white-flowered field beans

G - Articles in popular magazines and other technical publications

Williams, I. H. 1994. An investigation of intra-crop and inter-crop contamination of white-flowered field beans. Pea and Bean Progress. Summer, 1994, p. 9.

The aphid sex pheromone: a novel host location cur for the parasitoid Praon volucre

C1 - Edited contributions to conferences/learned societies

Lilley, R., Hardie, J., Powell, W. and Wadhams, L. J. 1994. The aphid sex pheromone: a novel host location cur for the parasitoid Praon volucre. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1994 . Wiley.

Antennal glands of Psylliodes chrysocephala and their possible role in reproductive behaviour

A - Papers appearing in refereed journals

Bartlet, E., Isidoro, N. and Williams, I. H. 1994. Antennal glands of Psylliodes chrysocephala and their possible role in reproductive behaviour. Physiological Entomology. 19 (4), pp. 241-250. https://doi.org/10.1111/j.1365-3032.1994.tb01048.x

The dependence of crop production within the European Union on pollination by honey bees

A - Papers appearing in refereed journals

Williams, I. H. 1994. The dependence of crop production within the European Union on pollination by honey bees. Agricultural Science Reviews. 6, pp. 229-257.

Land use changes and honey bee forage plants

B - Book chapters etc edited externally

Williams, I. H. and Carreck, N. L. 1994. Land use changes and honey bee forage plants. in: Matheson, A. (ed.) Forage for bees in an agricultural landscape International Bee Research Association, (IBRA), Cardiff. pp. 7-20

Electrophoretic studies of geographic and host strains of the aphid parasitoid Aphidius ervi

C2 - Non-edited contributions to conferences

Atanassova, P., Powell, W., Brookes, C. and Loxdale, H. 1994. Electrophoretic studies of geographic and host strains of the aphid parasitoid Aphidius ervi. Abstracts 5th European Congress of Entomology, York, 29th August-2nd September 1994 . pp. 251

Seasonal distribution and aerial movement of adult coccinellids on farmland

A - Papers appearing in refereed journals

Zhou, X-L, Carter, N. and Powell, W. 1994. Seasonal distribution and aerial movement of adult coccinellids on farmland. Biocontrol Science and Technology. 4, pp. 167-175.

Nemec and Stary's "population diversity centre" hypothesis for aphid parasitoids revisited

A - Papers appearing in refereed journals

Powell, W. 1994. Nemec and Stary's "population diversity centre" hypothesis for aphid parasitoids revisited. Norwegian Journal of Agricultural Sciences. Supplement 16, pp. 163-169.

The responses of Praon spp. parasitoids to aphid sex pheromone components in the field

A - Papers appearing in refereed journals

Hardie, J., Hick, A. J., Holler, C., Mann, J., Merritt, L., Nottingham, S. F., Powell, W., Wadhams, L. J., Witthinrich, J. and Wright, A. F. 1994. The responses of Praon spp. parasitoids to aphid sex pheromone components in the field. Entomologia Experimentalis et Applicata. 71 (2), pp. 95-99.

Design of field trials and its influence on the detection of pesticide side effects

C2 - Non-edited contributions to conferences

Kennedy, P. J., Carter, N., Walters, K. F. A., Perry, J. N., Powell, D. and Powell, W. 1994. Design of field trials and its influence on the detection of pesticide side effects. Abstracts Ecotoxicology - Ecological Dimensions: Proceedings 5th Annual Meeting of SETAC-Europe (UK Branch), Sheffield, 12-14 September 1994 . pp. 11

Interaction between cabbage seed weevil (Ceutorhynchus assimilis payk.) and brassica pod midge (Dasineura brassicae Winn.) in oilseed rape pods (in Polish)

C1 - Edited contributions to conferences/learned societies

Kelm, M., Ferguson, A. W., Williams, I. H., Kenward, M. G. and Clark, S. J. 1994. Interaction between cabbage seed weevil (Ceutorhynchus assimilis payk.) and brassica pod midge (Dasineura brassicae Winn.) in oilseed rape pods (in Polish). Materialy XXXIV Sesji Naukowej Instytutu Ochrony Roslin, Poznan, 1994 . pp. 258-262

The influence of glucosinolates and sugars on feeding by the cabbage stem flea beetle, Psylliodes chrysocephala

A - Papers appearing in refereed journals

Bartlet, E., Parsons, D., Williams, I. H. and Clark, S. J. 1994. The influence of glucosinolates and sugars on feeding by the cabbage stem flea beetle, Psylliodes chrysocephala. Entomologia Experimentalis et Applicata. 73 (1), pp. 77-83. https://doi.org/10.1111/j.1570-7458.1994.tb01841.x

Design of field trials and its influence on the detection of pesticide side effects

C2 - Non-edited contributions to conferences

Kennedy, P. J., Carter, N., Walters, K. F. A., Perry, J. N., Powell, D. and Powell, W. 1994. Design of field trials and its influence on the detection of pesticide side effects. Abstracts 5th European Congress of Entomology, York, 29th August-2nd September 1994 . pp. 276

Factors affecting growth and yield of winter oilseed rape (Brassica napus ), 1985-1989

A - Papers appearing in refereed journals

Leach, J. E., Darby, R. J., Williams, I. H., Fitt, B. D. L. and Rawlinson, C. J. 1994. Factors affecting growth and yield of winter oilseed rape (Brassica napus ), 1985-1989. The Journal of Agricultural Science. 122 (3), pp. 405-413. https://doi.org/10.1017/S0021859600067332

Seven decades of bee research at Rothamsted. A lecture given to the Central Association of Bee-keepers, 14th May 1993

G - Articles in popular magazines and other technical publications

Williams, I. H. 1994. Seven decades of bee research at Rothamsted. A lecture given to the Central Association of Bee-keepers, 14th May 1993.

The field attraction of female %Praon parasitoids to an aphid sex pheromone

C2 - Non-edited contributions to conferences

Lilley, R. I., Hardie, J., Powell, W. and Wadhams, L. J. 1993. The field attraction of female %Praon parasitoids to an aphid sex pheromone. Abstracts 5th International Symposium of the Global IOBC Working Group on the Ecology of Aphidophaga: Behavioural Ecology, Augmentation and Enhancement of Aphidophaga, Antibes, 6-10 September 1993 .

Electroantennogram and olfactometer responses of aphid parasitoids to nepetalactone, a component of aphid sex pheromones

C2 - Non-edited contributions to conferences

Hardie, J., Isaacs, R., Nazzi, F., Powell, W., Wadhams, L. J. and Woodcock, C. M. 1993. Electroantennogram and olfactometer responses of aphid parasitoids to nepetalactone, a component of aphid sex pheromones. Abstracts 5th International Symposium of the Global IOBC Working Group on the Ecology of Aphidophaga: Behavioural Ecology, Augmentation and Enhancement of Aphidophaga, Antibes, 6-10 September 1993 .

Conclusions and recommendations of the European Community Workshop on Bees for Pollination held in Brussels, 1-2 March 1992

D1 - Technical reports: non-confidential

Williams, I. H. 1993. Conclusions and recommendations of the European Community Workshop on Bees for Pollination held in Brussels, 1-2 March 1992. Commission of the European Communities (CEC), Luxembourg.

Responses of the parasitoid Praon volucre (Hymenoptera: Braconidae) to aphid sex pheromone lures in cereal fields in autumn: implications for parasitoid manipulation

A - Papers appearing in refereed journals

Powell, W., Hardie, J., Hick, A. J., Holler, C., Mann, J., Merritt, L., Nottingham, S. F., Wadhams, L. J., Witthinrich, J. and Wright, A. F. 1993. Responses of the parasitoid Praon volucre (Hymenoptera: Braconidae) to aphid sex pheromone lures in cereal fields in autumn: implications for parasitoid manipulation. European Journal of Entomology. 90, pp. 435-438.

The interdependence of agriculture and apiculture in the European Community

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1993. The interdependence of agriculture and apiculture in the European Community. Bruneau, E. (ed.) Bees for Pollination. Proceedings Workshop in the Community Programme of Research and Techological Development in the Field of Competitiveness of Agriculture and Management of Agricultural Resources (1989-1993), Brussels, March 1992 . Commission of the European Communities (CEC), Luxembourg. pp. 7-18

Nectar sources for honey bees and the movement of honey bee colonies for crop pollination and honey production in England

A - Papers appearing in refereed journals

Williams, I. H., Carreck, N. L. and Little, D. 1993. Nectar sources for honey bees and the movement of honey bee colonies for crop pollination and honey production in England. Bee World. 74 (4), pp. 160-175. https://doi.org/10.1080/0005772X.1993.11099182

Oil seed rape and beekeeping

B - Book chapters etc edited externally

Williams, I. H. 1993. Oil seed rape and beekeeping. in: Free, J. B. (ed.) Keeping bees Cardiff Academic Press, Cardiff. pp. 72-77

Host plant factors affecting the feeding of cabbage stem flea beetles (Psylliodes chrysocephala L.) on oilseed rape

C1 - Edited contributions to conferences/learned societies

Williams, I. H. and Bartlet, E. 1993. Host plant factors affecting the feeding of cabbage stem flea beetles (Psylliodes chrysocephala L.) on oilseed rape.

Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi

A - Papers appearing in refereed journals

Decker, U. M., Powell, W. and Clark, S. J. 1993. Sex pheromones in the cereal aphid parasitoids Praon volucre and Aphidius rhopalosiphi. Entomologia Experimentalis et Applicata. 69 (1), pp. 33-39. https://doi.org/10.1111/j.1570-7458.1993.tb01725.x

The responses of the cabbage seed weevil (Ceutorhynchus assimilis ) to the odour of oilseed rape (Brassica napus ) and to some volatile isothiocyanates

A - Papers appearing in refereed journals

Bartlet, E., Blight, M. M., Hick, A. J. and Williams, I. H. 1993. The responses of the cabbage seed weevil (Ceutorhynchus assimilis ) to the odour of oilseed rape (Brassica napus ) and to some volatile isothiocyanates. Entomologia Experimentalis et Applicata. 68 (3), pp. 295-302.

Studies of the oviposition deterring pheromone of the cabbage seed weevil (Ceutorhynchus assimilis Payk.): behavioural bioassays and oviposition by weevils wintered in the laboratory.

C1 - Edited contributions to conferences/learned societies

Ferguson, A. W. and Williams, I. H. 1993. Studies of the oviposition deterring pheromone of the cabbage seed weevil (Ceutorhynchus assimilis Payk.): behavioural bioassays and oviposition by weevils wintered in the laboratory.

Rothamsted: cradle of agricultural and apicultural research 2. Bee research achievements

G - Articles in popular magazines and other technical publications

Williams, I. H., Ball, B. V., Tomkins, P. W. and Carreck, N. L. 1993. Rothamsted: cradle of agricultural and apicultural research 2. Bee research achievements. Bee World. 74, pp. 61-74. https://doi.org/10.1080/0005772X.1993.11099160

Rothamsted: cradle of agricultural and apicultural research. Part 1: origins and development

G - Articles in popular magazines and other technical publications

Williams, I. H. 1993. Rothamsted: cradle of agricultural and apicultural research. Part 1: origins and development. Bee World. 73, pp. 20-26. https://doi.org/10.1080/0005772X.1993.11099150

Management of genetics of biological control introductions

A - Papers appearing in refereed journals

Hopper, K. R., Roush, R. T. and Powell, W. 1993. Management of genetics of biological control introductions. Annual Review of Entomology. 38, pp. 27-51.

The relationship between primary parasitoids and hyperparasitoids of cereal aphids: an analysis of field data

A - Papers appearing in refereed journals

Holler, C., Borgemeister, C. W., Haardt, H. and Powell, W. 1993. The relationship between primary parasitoids and hyperparasitoids of cereal aphids: an analysis of field data. Journal of Animal Ecology. 62 (1), pp. 12-21. https://doi.org/10.2307/5478

Apiculture for agriculture(3)

G - Articles in popular magazines and other technical publications

Williams, I. H. 1992. Apiculture for agriculture(3). Beekeeping. 58, pp. 202-204.

Apiculture for agriculture(2)

G - Articles in popular magazines and other technical publications

Williams, I. H. 1992. Apiculture for agriculture(2). Beekeeping. 58, pp. 172-174.

Apiculture for agriculture(1)

G - Articles in popular magazines and other technical publications

Williams, I. H. 1992. Apiculture for agriculture(1). Beekeeping. 58, pp. 148-150.

Apiculture for agriculture

G - Articles in popular magazines and other technical publications

Williams, I. H. 1992. Apiculture for agriculture. Beekeepers Quarterly. 31, pp. 14-21.

Synomones and kairomones from plants and honeydew in susceptible and resistant varieties; their importance to natural enemies.

C2 - Non-edited contributions to conferences

Powell, W. 1992. Synomones and kairomones from plants and honeydew in susceptible and resistant varieties; their importance to natural enemies. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Genetics of biological control introductions

C2 - Non-edited contributions to conferences

Hopper, K. R., Rousch, R. T. and Powell, W. 1992. Genetics of biological control introductions. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Genetics of biological control introductions

C2 - Non-edited contributions to conferences

Hopper, K. R., Roush, R. T. and Powell, W. 1992. Genetics of biological control introductions. Abstracts 19th International Congress of Entomology, Beijing, 1992 .

Mating behaviour and identification of the female sex pheromone gland in the brassica pod midge (Dasineura brassicae Winn.: Cecidomyidae, Diptera)

A - Papers appearing in refereed journals

Isidoro, N., Williams, I. H., Solinas, M. and Martin, A. 1992. Mating behaviour and identification of the female sex pheromone gland in the brassica pod midge (Dasineura brassicae Winn.: Cecidomyidae, Diptera). Bolletino Istituto Entomologia, Univ. Bologna. 47, pp. 27-48.

Les abeilles et la pollinisation des cultures et des fleurs sauvages dans la Communaute Europeene

A - Papers appearing in refereed journals

Corbet, S. A., Williams, I. H. and Osborne, J. L. 1992. Les abeilles et la pollinisation des cultures et des fleurs sauvages dans la Communaute Europeene. Apiacta. 27, pp. 105-108.

Tritrophic influences on aphid parasitoids (Hym.,Braconidae:Aphidiinae)

C1 - Edited contributions to conferences/learned societies

Powell, W. 1992. Tritrophic influences on aphid parasitoids (Hym.,Braconidae:Aphidiinae).

Host plant factors affecting the feeding of the cabbage stem flea beetle (Psylloides chrysocephala) on oilseed rape

C2 - Non-edited contributions to conferences

Williams, I. H. and Bartlet, E. 1992. Host plant factors affecting the feeding of the cabbage stem flea beetle (Psylloides chrysocephala) on oilseed rape. Proceedings OILB Meeting, Le Rhen, February 1992.

Response of the oilseed rape pests, Ceutorhynchus assimilis and Psylliodes chrysocephela, to a mixture of isothiocyanates

C1 - Edited contributions to conferences/learned societies

Bartlet, E., Williams, I. H., Blight, M. M. and Hick, A. J. 1992. Response of the oilseed rape pests, Ceutorhynchus assimilis and Psylliodes chrysocephela, to a mixture of isothiocyanates. Menken, S. B. J., Harrewijn, P. and Visser, J. H. (ed.) Proceedings 8th International Symposium on Insect-Plant Relationships. Kluwer Academic Publishers, Dordrecht, Netherlands. pp. 103-104

Bees have a vital role in agriculture

G - Articles in popular magazines and other technical publications

Ball, B. and Williams, I. H. 1992. Bees have a vital role in agriculture. The Agronomist. No 2, 1992, pp. 2-3.

Honeydew as an ovipositional stimulant for two species of syrphids

A - Papers appearing in refereed journals

Budenberg, W. J. and Powell, W. 1992. Honeydew as an ovipositional stimulant for two species of syrphids. Entomologia Experimentalis et Applicata. 64, pp. 57-61.

The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants

A - Papers appearing in refereed journals

Budenberg, W. J., Powell, W. and Clark, S. J. 1992. The influence of aphids and honeydew on the leaving rate of searching aphid parasitoids from wheat plants. Entomologia Experimentalis et Applicata. 63 (3), pp. 259-264. https://doi.org/10.1111/j.1570-7458.1992.tb01582.x

The influence of host food plants on host recognition by four aphidiine parasitoids (Hymenoptera: Braconidae)

A - Papers appearing in refereed journals

Powell, W. and Wright, A. F. 1992. The influence of host food plants on host recognition by four aphidiine parasitoids (Hymenoptera: Braconidae). Bulletin of Entomological Research. 81 (4), pp. 449-453. https://doi.org/10.1017/S0007485300032028

Les abeilles et la pollinisation de cultures et de fleurs sauvages dans la Communaute Europeenne

G - Articles in popular magazines and other technical publications

Corbet, S. A., Williams, I. H. and Osborne, J. L. 1991. Les abeilles et la pollinisation de cultures et de fleurs sauvages dans la Communaute Europeenne. Les Carnets du Cari. 13, pp. 18-21.

Ecology and population dynamics: Chairman's summing up and comments for the session on ecology and population dynamics

C2 - Non-edited contributions to conferences

Powell, W. 1991. Ecology and population dynamics: Chairman's summing up and comments for the session on ecology and population dynamics. Proceedings 4th European Parasitoid Workshop, Perugia, Italy, 3-5 April 1991 . pp. 5-6

Biochemical interactions between plant-herbivore-parasitoid

C1 - Edited contributions to conferences/learned societies

Pickett, J. A., Powell, W., Wadhams, L. J., Woodcock, C. M. and Wright, A. F. 1991. Biochemical interactions between plant-herbivore-parasitoid. Insect Parasitoids: 4th European Workshop, Perugia, April 1991.

Crop pollination and sustainable agriculture in the nineties and beyond

G - Articles in popular magazines and other technical publications

Williams, I. H. 1991. Crop pollination and sustainable agriculture in the nineties and beyond. Bee World. 72, pp. 45-46.

Bees and the pollination of crop and wild flowers: changes in the European Community: review commissioned by Scientific and Technical Options Assessment, European Parliament

D1 - Technical reports: non-confidential

Corbet, S. A., Williams, I. H. and Osborne, J. L. 1991. Bees and the pollination of crop and wild flowers: changes in the European Community: review commissioned by Scientific and Technical Options Assessment, European Parliament.

Insect pests of oilseed rape. HGCA oilseeds research review OS1

D1 - Technical reports: non-confidential

Alford, D. V., Cooper, D. A. and Williams, I. H. 1991. Insect pests of oilseed rape. HGCA oilseeds research review OS1. Home Grown Cereals Authority (HGCA) London.

Beekeeping, wild bees and pollination in the European Community

A - Papers appearing in refereed journals

Williams, I. H., Corbet, S. A. and Osborne, J. L. 1991. Beekeeping, wild bees and pollination in the European Community. Bee World. 72, pp. 170-180.

Bees, pollination and habitat change in the European Community

A - Papers appearing in refereed journals

Osborne, J. L., Williams, I. H. and Corbet, S. A. 1991. Bees, pollination and habitat change in the European Community. Bee World. 73, pp. 99-116.

Bees and the pollination of crop and wild flowers in the European Community

A - Papers appearing in refereed journals

Corbet, S. A., Williams, I. H. and Osborne, J. L. 1991. Bees and the pollination of crop and wild flowers in the European Community. Bee World. 72, pp. 47-59.

Floral phenology, pollination and fertilization in linseed

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1991. Floral phenology, pollination and fertilization in linseed. Production and Protection of Linseed. Aspects of Applied Biology .

Cereal aphids and their natural enemies

C1 - Edited contributions to conferences/learned societies

Wratten, S. D. and Powell, W. 1991. Cereal aphids and their natural enemies. Carter, N., Potts, G. R., Darbyshire, J. F. and Firbank, L. G. (ed.) The Ecology of Temperate Cereal Fields. Proceedings 32nd Symposium of the British Ecological Society with the Association of Applied Biologists, University of Cambridge, 1991. Blackwell Scientific Publications, Oxford. pp. 233-257

The influence of semiochemicals on the behaviour of cereal aphid parasitoids (Hymenoptera)

C1 - Edited contributions to conferences/learned societies

Powell, W., Decker, U. M. and Budenberg, W. J. 1991. The influence of semiochemicals on the behaviour of cereal aphid parasitoids (Hymenoptera). Chambers, R. J., Hodek, I., Dixon, A. F. G. and Polgar, L. (ed.) Behaviour and impact of Aphidophaga. SPB Academic Publishing, The Hague. pp. 67-71

Synthetic aphid sex pheromone lures female parasitoids

A - Papers appearing in refereed journals

Hardie, J., Nottingham, S. F., Powell, W. and Wadhams, L. J. 1991. Synthetic aphid sex pheromone lures female parasitoids. Entomologia Experimentalis et Applicata. 61 (1), pp. 97-99.

Factors restricting the feeding of the cabbage stem flea beetle (Psylliodes chrysocephala)

A - Papers appearing in refereed journals

Bartlet, E. and Williams, I. H. 1991. Factors restricting the feeding of the cabbage stem flea beetle (Psylliodes chrysocephala). Entomologia Experimentalis et Applicata. 60 (3), pp. 233-238.

Incidence of pests and diseases and effects of crop protection on double- and single-low winter rape cultivars

C1 - Edited contributions to conferences/learned societies

Williams, I. H., Doughty, K. J., Bock, C. H. and Rawlinson, C. J. 1991. Incidence of pests and diseases and effects of crop protection on double- and single-low winter rape cultivars. Proceedings GCIRC 8th International Rapeseed Conference, Saskatoon Canada, 9-11 July 1991.

Research into the pollination of alternative crops at Rothamsted

G - Articles in popular magazines and other technical publications

Williams, I. H. 1991. Research into the pollination of alternative crops at Rothamsted.

Deposition and longevity of oviposition-deterring pheromone in the cabbage seed weevil

A - Papers appearing in refereed journals

Ferguson, A. W. and Williams, I. H. 1991. Deposition and longevity of oviposition-deterring pheromone in the cabbage seed weevil. Physiological Entomology. 16 (1), pp. 27-33. https://doi.org/10.1111/j.1365-3032.1991.tb00540.x

Pests, diseases and effects of crop protection on single- and double-low winter rape

C1 - Edited contributions to conferences/learned societies

Rawlinson, C. J. and Williams, I. H. 1990. Pests, diseases and effects of crop protection on single- and double-low winter rape.

Conservation and manipulation of aphid parasitoids

C1 - Edited contributions to conferences/learned societies

Powell, W., Budenberg, W. J., Decker, U. M. and Wright, A. F. 1990. Conservation and manipulation of aphid parasitoids. Proceedings Brighton Crop Protection Conference - Pests and Diseases, 1990. pp. 185-690

Pollination requirements of linseed (Linum usitatissimum)

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. H. and Clark, S. J. 1990. Pollination requirements of linseed (Linum usitatissimum). The Journal of Agricultural Science. 115, pp. 347-352. https://doi.org/10.1017/S0021859600075778

Effect of pollination on flower, pod and seed production in white lupin (Lupinus albus)

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. P., Ferguson, A. W. and Clark, S. J. 1990. Effect of pollination on flower, pod and seed production in white lupin (Lupinus albus). The Journal of Agricultural Science. 115 (1), pp. 67-73. https://doi.org/10.1017/S0021859600073937

Monitoring Dasineura brassicae by means of pheromone traps.

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1990. Monitoring Dasineura brassicae by means of pheromone traps.

A bibliography of the parasitoids of the brassica pod midge (Dasineura brassicae Winn).

C1 - Edited contributions to conferences/learned societies

Williams, I. H. and Walton, M. 1990. A bibliography of the parasitoids of the brassica pod midge (Dasineura brassicae Winn).

Electrophoresis as a tool for estimating levels of hymenopterous parasitism in field populations of the cereal aphid, Sitobion avenae .

A - Papers appearing in refereed journals

Walton, M. P., Powell, W., Loxdale, H. D. and Allen-Williams, L. J. 1990. Electrophoresis as a tool for estimating levels of hymenopterous parasitism in field populations of the cereal aphid, Sitobion avenae . Entomologia Experimentalis et Applicata. 54 (3), pp. 271-279.

A new initiative in crop protection research on rape.

G - Articles in popular magazines and other technical publications

Rawlinson, C. J., Pickett, J. A., Shewry, P. R., Wilding, N. and Williams, I. H. 1989. A new initiative in crop protection research on rape. GCIRC Bulletin. 5, pp. 58-59.

The use of electrophoresis in the study of hymenopteran parasitoids of agricultural pests.

B - Book chapters etc edited externally

Powell, W. and Walton, M. P. 1989. The use of electrophoresis in the study of hymenopteran parasitoids of agricultural pests. in: Electrophoretic studies on agricultural pests. Systematics Association Special Volume H.D. Loxdale & J. Den Hollander eds Clarendon Press, Oxford.

Pheromone monitoring of Brassica pod midge (Dasineura brassicae Winn.).

C1 - Edited contributions to conferences/learned societies

Williams, I. H. 1989. Pheromone monitoring of Brassica pod midge (Dasineura brassicae Winn.). Proceedings of the 7th International Rapeseed Congress, Poznan, Poland, 1987, . pp. 1074-1076

Pest incidence on single low and double low oilseed rape cultivars

A - Papers appearing in refereed journals

Williams, I. H. 1989. Pest incidence on single low and double low oilseed rape cultivars. Aspects of Applied Biology. 23, pp. 277-286.

Honeybee pollination of the double low oilseed rape cultivar Ariana.

C1 - Edited contributions to conferences/learned societies

Williams, I. H. and Simpkins, J. 1989. Honeybee pollination of the double low oilseed rape cultivar Ariana. Production and protection of oilseed rape and other brassica crops. Aspects of Applied Biology .

Oviposition-deterring pheromone of the cabbage seed weevil (Ceutorhynchus assimilis Payk.)

A - Papers appearing in refereed journals

Ferguson, A. W. and Williams, I. H. 1989. Oviposition-deterring pheromone of the cabbage seed weevil (Ceutorhynchus assimilis Payk.). Aspects of Applied Biology. 23, pp. 339-342.

Host plant selection by the cabbage stem flea beetle (Psylliodes chrysocephala ).

A - Papers appearing in refereed journals

Bartlet, E. and Williams, I. H. 1989. Host plant selection by the cabbage stem flea beetle (Psylliodes chrysocephala ). Aspects of Applied Biology. 23, pp. 335-338.

Glucosinolates in oilseed rape (Brassica napus) and the incidence of pollen beetles (Meligethes aeneus)

A - Papers appearing in refereed journals

Milford, G. F. J., Porter, A. J. R., Fieldsend, J. K., Miller, C. A., Leach, J. E. and Williams, I. H. 1989. Glucosinolates in oilseed rape (Brassica napus) and the incidence of pollen beetles (Meligethes aeneus). Annals of Applied Biology - AAB. 115 (2), pp. 375-380. https://doi.org/10.1111/j.1744-7348.1989.tb03396.x

Effectiveness of different insecticides applied at various growth stages to control aphids on winter wheat.

A - Papers appearing in refereed journals

Carter, N., Powell, W., Wright, A. F. and Ashby, J. E. 1989. Effectiveness of different insecticides applied at various growth stages to control aphids on winter wheat. Crop Protection. 8, pp. 271-276.

The pollination of linseed and flax.

G - Articles in popular magazines and other technical publications

Williams, I. H. 1988. The pollination of linseed and flax. Bee World. 69, pp. 145-152.

Observations on the effects of an autumn application of a pyrethroid insecticide on non-target predatory species in winter cereals.

C1 - Edited contributions to conferences/learned societies

Purvis, G., Carter, N. and Powell, W. 1988. Observations on the effects of an autumn application of a pyrethroid insecticide on non-target predatory species in winter cereals. Integrated crop protection in cereals. Proceedings of the EC Experts' Group Meeting, Littlehampton, 1986. Eds R. Cavalloro & K. Sunderland. pp. 153-159

Honeydew as a kairomone for aphid parasitoids and hyperparasitoids.

C1 - Edited contributions to conferences/learned societies

Budenberg, W. J. and Powell, W. 1988. Honeydew as a kairomone for aphid parasitoids and hyperparasitoids. &nbsp;Proceedings British Crop Protection Conference - Pests and Diseases, Brighton, 1988, 1149-1154..

The abilities of the aphid parasitoids Aphidius ervi Haliday and A. rhopalosiphi De Stefani Perez (Hymenoptera: Braconidae) to transfer between different known host species and the implications for the use of alternative hosts in pest control strategies.

A - Papers appearing in refereed journals

Powell, W. and Wright, A. F. 1988. The abilities of the aphid parasitoids Aphidius ervi Haliday and A. rhopalosiphi De Stefani Perez (Hymenoptera: Braconidae) to transfer between different known host species and the implications for the use of alternative hosts in pest control strategies. Bulletin of Entomological Research. 78 (4), pp. 683-693. https://doi.org/10.1017/S0007485300015546

The phenology of the emergence of brassica pod midge (Dasineura brassicae Winn.) and its infestation of spring oil-seed rape (Brassica napus L.).

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. P. and Kelm, M. 1987. The phenology of the emergence of brassica pod midge (Dasineura brassicae Winn.) and its infestation of spring oil-seed rape (Brassica napus L.). The Journal of Agricultural Science. 109 (2), pp. 309-314. https://doi.org/10.1017/S0021859600080734

The phenology of the emergence of brassica pod midge (Dasineura brassicae Winn.) and its infestation of winter oil-seed rape (Brassica napus L.)

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. P. and Kelm, M. 1987. The phenology of the emergence of brassica pod midge (Dasineura brassicae Winn.) and its infestation of winter oil-seed rape (Brassica napus L.). The Journal of Agricultural Science. 108 (3), pp. 579-589. https://doi.org/10.1017/S0021859600079983

Accurate estimation of invertebrate density in cereals.

G - Articles in popular magazines and other technical publications

Sunderland, K. D., Hawkes, C., Stevenson, J. H., Mcbride, T., Smart, L. E., Sopp, P. I., Powell, W., Chambers, R. J. and Carter, O. C. R. 1987. Accurate estimation of invertebrate density in cereals. Bulletin IOBC/WPRS/SROP . 10, pp. 71-81.

The pollination of lupins.

A - Papers appearing in refereed journals

Williams, I. H. 1987. The pollination of lupins. Bee World. 68, pp. 10-16.

The effect of insect pollination on plant development and seed production in winter oil-seed rape (Brassica napus L.).

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. P. and White, Robin P. 1987. The effect of insect pollination on plant development and seed production in winter oil-seed rape (Brassica napus L.). The Journal of Agricultural Science. 109 (1), pp. 135-139. https://doi.org/10.1017/S0021859600081077

Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids.

A - Papers appearing in refereed journals

Powell, W., Wilding, N., Brobyn, P. J. and Clark, S. J. 1986. Interference between parasitoids (Hym.: Aphididae) and fungi (Entomophthorales) attacking cereal aphids. Entomophaga. 31, pp. 293-302. https://doi.org/10.1007/BF02373339

Evidence for a female sex pheromone in the brassica pod midge Dasineura brassicae .

A - Papers appearing in refereed journals

Williams, I. H. and Martin, A. P. 1986. Evidence for a female sex pheromone in the brassica pod midge Dasineura brassicae . Physiological Entomology. 11 (3), pp. 353-356. https://doi.org/10.1111/j.1365-3032.1986.tb00423.x

The influence of weeds on aphid-specific natural enemies in winter wheat.

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Wilding, N. 1986. The influence of weeds on aphid-specific natural enemies in winter wheat. Crop Protection. 5, pp. 182-189.

The pollination requirements of oil-seed rape (Brassica napus L.)

A - Papers appearing in refereed journals

Williams, I. H., Martin, A. P. and White, Robin P. 1986. The pollination requirements of oil-seed rape (Brassica napus L.). The Journal of Agricultural Science. 106 (1), pp. 27-30. https://doi.org/10.1017/S0021859600061670

Biocontrol of cereal aphids in the United Kingdom by a range of natural enemies.

G - Articles in popular magazines and other technical publications

Powell, W. 1986. Biocontrol of cereal aphids in the United Kingdom by a range of natural enemies.

Enhancing parasitoid activity in crops.

G - Articles in popular magazines and other technical publications

Powell, W. 1986. Enhancing parasitoid activity in crops.

Oil seed rape and beekeeping

G - Articles in popular magazines and other technical publications

Williams, I. H. 1985. Oil seed rape and beekeeping. Report of the Central Association of Beekeepers. pp. 1-8.

The pollination of swede rape (brassica-napus l)

A - Papers appearing in refereed journals

Williams, I. H. 1985. The pollination of swede rape (brassica-napus l). Bee World. 66 (1), pp. 16-22. https://doi.org/10.1080/0005772x.1985.11098817

Assessment of resistance of commercial varieties of winter-wheat to cereal aphids

A - Papers appearing in refereed journals

Dewar, A. M., Carter, N. and Powell, W. 1985. Assessment of resistance of commercial varieties of winter-wheat to cereal aphids. Annals of Applied Biology - AAB. 106, pp. 168-169.

Effects of pirimicarb, dimethoate and benomyl on natural enemies of cereal aphids in winter wheat

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Bardner, R. 1985. Effects of pirimicarb, dimethoate and benomyl on natural enemies of cereal aphids in winter wheat. Annals of Applied Biology - AAB. 106 (2), pp. 235-242. https://doi.org/10.1111/j.1744-7348.1985.tb03113.x

The influence of weeds on polyphagous arthropod predators in winter wheat

A - Papers appearing in refereed journals

Powell, W., Dean, G. J. and Dewar, A. 1985. The influence of weeds on polyphagous arthropod predators in winter wheat. Crop Protection. 4, pp. 298-312.

The pollination requirements of cultivars of oil-seed rape [Brassica napus, turnip, Brassica campestris]

A - Papers appearing in refereed journals

Williams, I. H. 1984. The pollination requirements of cultivars of oil-seed rape [Brassica napus, turnip, Brassica campestris]. Veme Symposium International sur la pollinisation Versailes 27-30 September 1983 INRA. 21.

Pheromones in the management of beneficial insects

A - Papers appearing in refereed journals

Pickett, J. A., Dawson, G. W., Free, J. B., Griffiths, D. C., Powell, W., Williams, I. M. and Woodcock, C. M. 1984. Pheromones in the management of beneficial insects. Proceedings of the British Crop Protection Council. 1, pp. 247-254.

Pheromones in the management of beneficial insects

A - Papers appearing in refereed journals

Dawson, G. W., Free, J. B., Griffiths, D. C., Powell, W., Williams, I. M. and Woodcock, C. M. 1984. Pheromones in the management of beneficial insects. Proceedings of the British Crop Protection Council. 1, pp. 247-254.

Social insects - ecology and behavioral biology - brian,mv

A - Papers appearing in refereed journals

Williams, I. H. 1984. Social insects - ecology and behavioral biology - brian,mv. Nature. 308 (5956), pp. 300-300. https://doi.org/10.1038/308300b0

The concentrations of air-borne rape pollen over a crop of oil-seed rape (brassica-napus l)

A - Papers appearing in refereed journals

Williams, I. H. 1984. The concentrations of air-borne rape pollen over a crop of oil-seed rape (brassica-napus l). The Journal of Agricultural Science. 103 (2), pp. 353-357. https://doi.org/10.1017/s0021859600047316

Reservoirs for Aphidius ervi Haliday (Hymenoptera: Aphidiidae), a polyphagous parasitoid of cereal aphids (Hemiptera: Aphididae)

A - Papers appearing in refereed journals

Cameron, P. J., Powell, W. and Loxdale, H. D. 1984. Reservoirs for Aphidius ervi Haliday (Hymenoptera: Aphidiidae), a polyphagous parasitoid of cereal aphids (Hemiptera: Aphididae). Bulletin of Entomological Research. 74 (4), pp. 647-656. https://doi.org/10.1017/S0007485300014024

The role of parasitoids in limiting cereal aphid populations

B - Book chapters etc edited externally

Powell, W. 1983. The role of parasitoids in limiting cereal aphid populations. in: Cavalloro, R. (ed.) Rotterdam, Netherlands A.A. Balkema. pp. 50-56

Using foraging honeybees to sample an area for trace-metals

A - Papers appearing in refereed journals

Free, J. B., Williams, I. H., Pinsent, Rjfh, Townshend, A., Basi, M. S. and Graham, C. L. 1983. Using foraging honeybees to sample an area for trace-metals. Environment International. 9 (1), pp. 9-12. https://doi.org/10.1016/0160-4120(83)90108-3

Scent-marking of flowers by honeybees

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1983. Scent-marking of flowers by honeybees. Journal of Apicultural Research. 22 (2), pp. 86-90. https://doi.org/10.1080/00218839.1983.11100564

The reactions of two cereal aphid parasitoids, aphidius-uzbekistanicus and aphidius-ervi to host aphids and their food-plants

A - Papers appearing in refereed journals

Powell, W. and Zhang, Z. L. 1983. The reactions of two cereal aphid parasitoids, aphidius-uzbekistanicus and aphidius-ervi to host aphids and their food-plants. Physiological Entomology. 8 (4), pp. 439-443. https://doi.org/10.1111/j.1365-3032.1983.tb00378.x

Foraging behavior of honeybees and bumble bees on brussels sprout grown to produce hybrid seed

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1983. Foraging behavior of honeybees and bumble bees on brussels sprout grown to produce hybrid seed. Journal of Apicultural Research. 22 (2), pp. 94-97. https://doi.org/10.1080/00218839.1983.11100566

The role of parasitoids in limiting cereal aphid populations

A - Papers appearing in refereed journals

Powell, W. 1982. The role of parasitoids in limiting cereal aphid populations. Aphid antagonists. Proceedings of a meeting of the EC Experts' Group, Portici, Italy, 23-24 November 1982. pp. 50-56.

(z)-11-eicosen-1-ol, an important new pheromonal component from the sting of the honey bee, apis-mellifera-l (hymenoptera, apidae)

A - Papers appearing in refereed journals

Pickett, J. A., Williams, I. H. and Martin, A. P. 1982. (z)-11-eicosen-1-ol, an important new pheromonal component from the sting of the honey bee, apis-mellifera-l (hymenoptera, apidae). Journal of Chemical Ecology. 8 (1), pp. 163-175. https://doi.org/10.1007/bf00984013

Use of unpurified nasonov pheromone components to attract clustering honeybees

A - Papers appearing in refereed journals

Free, J. B., Ferguson, A. W., Pickett, J. A. and Williams, I. H. 1982. Use of unpurified nasonov pheromone components to attract clustering honeybees. Journal of Apicultural Research. 21 (1), pp. 26-29. https://doi.org/10.1080/00218839.1982.11100512

Nasonov pheromone of the honeybee - apis-mellifera-l (hymenoptera, apidae) .4. Comparative electroantennogram responses

A - Papers appearing in refereed journals

Williams, I. H., Pickett, J. A. and Martin, A. P. 1982. Nasonov pheromone of the honeybee - apis-mellifera-l (hymenoptera, apidae) .4. Comparative electroantennogram responses. Journal of Chemical Ecology. 8 (2), pp. 567-574. https://doi.org/10.1007/bf00987804

The identification of hymenopterous parasitoids attacking cereal aphids in Britain

A - Papers appearing in refereed journals

Powell, W. 1982. The identification of hymenopterous parasitoids attacking cereal aphids in Britain. Systematic Entomology. 7 (4), pp. 465-473. https://doi.org/10.1111/j.1365-3113.1982.tb00457.x

Attractiveness of (Z)-11-eicosen-1-ol to foraging honeybees

A - Papers appearing in refereed journals

Free, J. B., Williams, I. H., Pickett, J. A., Ferguson, A. W. and Martin, A. P. 1982. Attractiveness of (Z)-11-eicosen-1-ol to foraging honeybees. Journal of Apicultural Research. 21 (3), pp. 151-156. https://doi.org/10.1080/00218839.1982.11100532

Chemical communication in honeybees

A - Papers appearing in refereed journals

Williams, I. H. 1981. Chemical communication in honeybees. Central Association of Bee-Keepers.

Towards integrated control of cereal aphids

A - Papers appearing in refereed journals

Powell, W., Dean, G. J., Dewar, A. M. and Wilding, N. 1981. Towards integrated control of cereal aphids. Proceedings of the British Insecticide and Fungicide Conference. 11.

Solitary bees that inhabit walls

A - Papers appearing in refereed journals

Williams, I. H. 1981. Solitary bees that inhabit walls. Bee World. 62 (3), pp. 106-108. https://doi.org/10.1080/0005772x.1981.11097827

The relative abundance of the hymenopterous parasites attacking metopolophium-dirhodum (walker) and sitobion-avenae (f) (hemiptera, aphididae) on cereals during 1973-79 in southern England

A - Papers appearing in refereed journals

Dean, G. J., Jones, M. G. and Powell, W. 1981. The relative abundance of the hymenopterous parasites attacking metopolophium-dirhodum (walker) and sitobion-avenae (f) (hemiptera, aphididae) on cereals during 1973-79 in southern England. Bulletin of Entomological Research. 71 (2), pp. 307-315. https://doi.org/10.1017/s0007485300008336

The nasonov pheromone of the honeybee apis-mellifera l (hymenoptera, apidae) .2. Bioassay of the components using foragers

A - Papers appearing in refereed journals

Williams, I. H., Pickett, J. A. and Martin, A. P. 1981. The nasonov pheromone of the honeybee apis-mellifera l (hymenoptera, apidae) .2. Bioassay of the components using foragers. Journal of Chemical Ecology. 7 (2), pp. 225-237. https://doi.org/10.1007/bf00995745

Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .3. Regulation of pheromone composition and production

A - Papers appearing in refereed journals

Pickett, J. A., Williams, I. H., Smith, M. C. and Martin, A. P. 1981. Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .3. Regulation of pheromone composition and production. Journal of Chemical Ecology. 7 (3), pp. 543-554. https://doi.org/10.1007/bf00987702

Attraction of honey bees to flowering plants by using synthetic nasonov pheromone

A - Papers appearing in refereed journals

Williams, I. H., Pickett, J. A. and Martin, A. P. 1981. Attraction of honey bees to flowering plants by using synthetic nasonov pheromone. Entomologia Experimentalis et Applicata. 30 (2), pp. 199-201. https://doi.org/10.1111/j.1570-7458.1981.tb03098.x

The attachment of honeybee comb to sloping hive sides and side-bars of frames

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1981. The attachment of honeybee comb to sloping hive sides and side-bars of frames. Journal of Apicultural Research. 20 (4), pp. 239-242. https://doi.org/10.1080/00218839.1981.11100503

The value of white clover Trifolium repens L., Cultivar S100 planted on motorway verges to honeybees Apis mellifera L.

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1980. The value of white clover Trifolium repens L., Cultivar S100 planted on motorway verges to honeybees Apis mellifera L. Biological Conservation. 18 (2), pp. 89-92. https://doi.org/10.1016/0006-3207(80)90073-7

Toxares deltiger (Haliday) (Hymenoptera: Aphidiidae) parasiting the cereal aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae), in southern England: a new host-parasitoid record

A - Papers appearing in refereed journals

Powell, W. 1980. Toxares deltiger (Haliday) (Hymenoptera: Aphidiidae) parasiting the cereal aphid, Metopolophium dirhodum (Walker) (Hemiptera: Aphididae), in southern England: a new host-parasitoid record. Bulletin of Entomological Research. 70 (3), pp. 407-409. https://doi.org/10.1017/s0007485300007665

Performance and uptake of some carbendazim-producing fungicides applied as seed treatments to spring barley, in relation to their physicochemical properties

A - Papers appearing in refereed journals

Grahambryce, I. J., Nicholls, P. H. and Williams, I. H. 1980. Performance and uptake of some carbendazim-producing fungicides applied as seed treatments to spring barley, in relation to their physicochemical properties. Pesticide Science. 11 (1), pp. 1-8. https://doi.org/10.1002/ps.2780110102

Oil-seed rape and beekeeping, particularly in Britain

A - Papers appearing in refereed journals

Williams, I. H. 1980. Oil-seed rape and beekeeping, particularly in Britain. Bee World. 61 (4), pp. 141-153. https://doi.org/10.1080/0005772x.1980.11097797

Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .1. Chemical characterization

A - Papers appearing in refereed journals

Pickett, J. A., Williams, I. H., Martin, A. P. and Smith, M. C. 1980. Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .1. Chemical characterization. Journal of Chemical Ecology. 6 (2), pp. 425-434. https://doi.org/10.1007/bf01402919

Infestation of crops of oil-seed rape (brassica-napus l) by insect pests

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1979. Infestation of crops of oil-seed rape (brassica-napus l) by insect pests. The Journal of Agricultural Science. 92 (1), pp. 203-218. https://doi.org/10.1017/s0021859600060652

Distribution of insect pests on crops of oil-seed rape (brassica-napus l) and the damage they cause

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1979. Distribution of insect pests on crops of oil-seed rape (brassica-napus l) and the damage they cause. The Journal of Agricultural Science. 92 (1), pp. 139-149. https://doi.org/10.1017/s0021859600060597

Compensation of oil-seed rape (brassica-napus l) plants after damage to their buds and pods

A - Papers appearing in refereed journals

Williams, I. H. and Free, J. B. 1979. Compensation of oil-seed rape (brassica-napus l) plants after damage to their buds and pods. The Journal of Agricultural Science. 92 (1), pp. 53-59. https://doi.org/10.1017/s0021859600060494

Beekeeping in the sultanate of oman

A - Papers appearing in refereed journals

Williams, I. H. 1979. Beekeeping in the sultanate of oman. American bee journal. 119 (7), pp. 510-&.

Pests and pollution of oil-seed rape crops on England

A - Papers appearing in refereed journals

Williams, I. H. 1978. Pests and pollution of oil-seed rape crops on England. Report of the Central Association of Bee-Keepers. June.

Survey of damage caused to crops of oil-seed rape (brassica-napus-l) by insect pests in south-central England and their effect on seed yield

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1978. Survey of damage caused to crops of oil-seed rape (brassica-napus-l) by insect pests in south-central England and their effect on seed yield. The Journal of Agricultural Science. 90 (2), pp. 417-424. https://doi.org/10.1017/s0021859600055520

Responses of the pollen beetle, meligethes-aeneus, and the seed weevil, ceuthorhynchus-assimilis, to oil-seed rape, brassica-napus, and other plants

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1978. Responses of the pollen beetle, meligethes-aeneus, and the seed weevil, ceuthorhynchus-assimilis, to oil-seed rape, brassica-napus, and other plants. Journal of Applied Ecology. 15 (3), pp. 761-&. https://doi.org/10.2307/2402773

Pollination requirements of swede rape (brassica-napus l) and of turnip rape (brassica-campestris l)

A - Papers appearing in refereed journals

Williams, I. H. 1978. Pollination requirements of swede rape (brassica-napus l) and of turnip rape (brassica-campestris l). The Journal of Agricultural Science. 91 (2), pp. 343-348. https://doi.org/10.1017/s0021859600046438

Feeding and mating-behavior of pollen beetles (meligethes-aeneus fab) and seed weevils (ceutorhynchus-assimilis payk) on oil-seed rape (brassica-napus l)

A - Papers appearing in refereed journals

Williams, I. H. and Free, J. B. 1978. Feeding and mating-behavior of pollen beetles (meligethes-aeneus fab) and seed weevils (ceutorhynchus-assimilis payk) on oil-seed rape (brassica-napus l). The Journal of Agricultural Science. 91 (2), pp. 453-459. https://doi.org/10.1017/s0021859600046554

Behavior of insects foraging on pigeon pea (cajanus-cajan-(l) millsp) in india

A - Papers appearing in refereed journals

Williams, I. H. 1977. Behavior of insects foraging on pigeon pea (cajanus-cajan-(l) millsp) in india. Tropical Agriculture. 54 (4), pp. 353-363.

The effect on the foraging behaviour of honeybees of the relative locations of the hive entrance and brood combs

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1976. The effect on the foraging behaviour of honeybees of the relative locations of the hive entrance and brood combs. Applied Animal Ethology. 2 (2), pp. 141-154. https://doi.org/10.1016/0304-3762(76)90042-0

Pollination as a factor limiting yield of field beans (vicia-faba-l)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1976. Pollination as a factor limiting yield of field beans (vicia-faba-l). The Journal of Agricultural Science. 87 (2), pp. 395-399. https://doi.org/10.1017/s0021859600027714

Insect pollination of Anacardium occidentale L., Mangifera indica L., Blighia sapida Koenig and Persea americana Mill.

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1976. Insect pollination of Anacardium occidentale L., Mangifera indica L., Blighia sapida Koenig and Persea americana Mill. Tropical Agriculture. 53 (2), pp. 125-139.

High-pressure liquid-chromatography of benzimidazoles

A - Papers appearing in refereed journals

Austin, D. J., Lord, K. A. and Williams, I. H. 1976. High-pressure liquid-chromatography of benzimidazoles. Pesticide Science. 7 (2), pp. 211-222. https://doi.org/10.1002/ps.2780070216

Beneficial insects present on a motorway verge

A - Papers appearing in refereed journals

Free, J. B., Gennard, D., Stevenson, J. H. and Williams, I. H. 1975. Beneficial insects present on a motorway verge. Biological Conservation. 8 (1), pp. 61-72. https://doi.org/10.1016/0006-3207(75)90079-8

Pollination of coconut (Cocos nucifera L.) in Jamaica by honeybees and wasps

A - Papers appearing in refereed journals

Free, J. B., Raw, A. and Williams, I. H. 1975. Pollination of coconut (Cocos nucifera L.) in Jamaica by honeybees and wasps. 1 (3), pp. 213-223. https://doi.org/10.1016/0304-3762(75)90013-9

Pollination and set of early flowers of runner bean (phaseolus-coccineus l)

A - Papers appearing in refereed journals

Williams, I. H. and Free, J. B. 1975. Pollination and set of early flowers of runner bean (phaseolus-coccineus l). Journal of Horticultural Science. 50 (4), pp. 405-413. https://doi.org/10.1080/00221589.1975.11514649

Insect pollination of sugar-beet (beta-vulgaris) seed crops

A - Papers appearing in refereed journals

Free, J. B., Williams, I. H., Longden, P. C. and Johnson, M. G. 1975. Insect pollination of sugar-beet (beta-vulgaris) seed crops. Annals of Applied Biology - AAB. 81 (2), pp. 127-134. https://doi.org/10.1111/j.1744-7348.1975.tb00529.x

Factors determining rearing and rejection of drones by honeybee colony

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1975. Factors determining rearing and rejection of drones by honeybee colony. Animal Behaviour. 23 (AUG), pp. 650-675. https://doi.org/10.1016/0003-3472(75)90143-8

Effect of environmental conditions during larval period on tendency of worker honeybees to develop their ovaries

A - Papers appearing in refereed journals

Williams, I. H. and Free, J. B. 1975. Effect of environmental conditions during larval period on tendency of worker honeybees to develop their ovaries. Journal of Entomology Series A-Physiology & Behaviour. 49 (MAR25), pp. 179-182.

Solitary bees in Britian

A - Papers appearing in refereed journals

Williams, I. H. 1974. Solitary bees in Britian. Lecture to the Central Association of Bee-Keepers. pp. 1-12.

Pollination of self-fertile apple-trees

A - Papers appearing in refereed journals

Free, J. B., Smith, B. D., Stott, K. G. and Williams, I. H. 1974. Pollination of self-fertile apple-trees. Journal Of Horticultural Science & Biotechnology. 49 (3), pp. 301-304. https://doi.org/10.1080/00221589.1974.11514583

Pollination of onion (allium-cepa l) to produce hybrid seed

A - Papers appearing in refereed journals

Williams, I. H. and Free, J. B. 1974. Pollination of onion (allium-cepa l) to produce hybrid seed. Journal of Applied Ecology. 11 (2), pp. 409-417. https://doi.org/10.2307/2402194

Influence of location of honeybee colonies on their choice of pollen sources

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1974. Influence of location of honeybee colonies on their choice of pollen sources. Journal of Applied Ecology. 11 (3), pp. 925-935. https://doi.org/10.2307/2401754

Factors determining food storage and brood rearing in honeybee (apis-mellifera l) comb

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1974. Factors determining food storage and brood rearing in honeybee (apis-mellifera l) comb. Journal of Entomology Series A-Physiology & Behaviour. 49 (NOV7), pp. 47-63.

Pollination of hybrid kale (brassica-oleraceae l)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1973. Pollination of hybrid kale (brassica-oleraceae l). The Journal of Agricultural Science. 81 (3), pp. 557-559. https://doi.org/10.1017/s0021859600086627

Genetic determination of honeybee (apis-mellifera l) foraging preferences

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1973. Genetic determination of honeybee (apis-mellifera l) foraging preferences. Annals of Applied Biology - AAB. 73 (2), pp. 137-141. https://doi.org/10.1111/j.1744-7348.1973.tb01318.x

Foraging behavior of honeybees (apis-mellifera-l) on brussels sprout (brassica-oleracea l)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1973. Foraging behavior of honeybees (apis-mellifera-l) on brussels sprout (brassica-oleracea l). Journal of Applied Ecology. 10 (2), pp. 489-499. https://doi.org/10.2307/2402297

Trap-nesting solitary bees for students of biology

A - Papers appearing in refereed journals

Williams, I. H. 1972. Trap-nesting solitary bees for students of biology. Bee World. 53 (3), pp. 123-135.

The influence of a Honeybee (Apis Mellifera) colony on egg-laying by its Queen

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1972. The influence of a Honeybee (Apis Mellifera) colony on egg-laying by its Queen. Entomologia Experimentalis et Applicata. 15 (2), pp. 224-228. https://doi.org/10.1111/j.1570-7458.1972.tb00200.x

The role of the Nasonov gland pheromone in crop communication by honeybees (Apis mellifera L.)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1972. The role of the Nasonov gland pheromone in crop communication by honeybees (Apis mellifera L.). Behaviour. 41 (3/4), pp. 314-318.

Hoarding by honeybees (Apis mellifera L.)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1972. Hoarding by honeybees (Apis mellifera L.). Animal Behaviour. 20 (2), pp. 327-334. https://doi.org/10.1016/S0003-3472(72)80054-X

The transport of pollen on the body hairs of honeybees (Apis mellifera L.) and bumblebees (Bombus spp. L.)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1972. The transport of pollen on the body hairs of honeybees (Apis mellifera L.) and bumblebees (Bombus spp. L.). Journal of Applied Ecology. 9 (2), pp. 609-615. https://doi.org/10.2307/2402458

The effect of giving pollen and pollen supplement to honeybee colonies on the amount of pollen collected

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1971. The effect of giving pollen and pollen supplement to honeybee colonies on the amount of pollen collected. Journal of Apicultural Research. 10 (2), pp. 87-90. https://doi.org/10.1080/00218839.1971.11099676

Preliminary investigations on the occupation of artificial nests by Osmia rufa L.(Hymenoptera, Megachilidae)

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1970. Preliminary investigations on the occupation of artificial nests by Osmia rufa L.(Hymenoptera, Megachilidae). Journal of Applied Ecology. 7 (3), pp. 559-566. https://doi.org/10.2307/2401978

Exposure of the Nasonov gland by honeybees (Apis mellifera) collecting water

A - Papers appearing in refereed journals

Free, J. B. and Williams, I. H. 1970. Exposure of the Nasonov gland by honeybees (Apis mellifera) collecting water. Behaviour. 37 (3/4), pp. 286-290. https://doi.org/10.1163/156853970X00385