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

AuthorsFerguson, A. W., Nevard, L. M., Clark, S. J. and Cook, S. M.

BACKGROUNDPollen beetle (Meligethes aeneus F.) management in oilseed rape (Brassica napus L.) has become an urgent issue in the light of insecticide resistance. Risk prediction advice has relied upon flight temperature thresholds, while risk assessment uses simple economic thresholds. However, there is variation in the reported temperature of migration, and economic thresholds vary widely across Europe, probably owing to climatic factors interacting with beetle activity and plant compensation for damage. The effect of temperature on flight, feeding and oviposition activity of M. aeneus was examined in controlled conditions. RESULTSEscape from a release vial was taken as evidence of flight and was supported by video observations. The propensity to fly followed a sigmoid temperature-response curve between 6 and 23 degrees C; the 10, 25 and 50% flight temperature thresholds were 12.0-12.5 degrees C, 13.6-14.2 degrees C and 15.5-16.2 degrees C, respectively. Thresholds were slightly higher in the second of two flight bioassays, suggesting an effect of beetle age. Strong positive relationships were found between temperature (6-20 degrees C) and the rates of feeding and oviposition on flower buds of oilseed rape. CONCLUSIONThese temperature relationships could be used to improve M. aeneus migration risk assessment, refine weather-based decision support systems and modulate damage thresholds according to rates of bud damage. (c) 2014 Society of Chemical Industry

KeywordsAgronomy; Entomology
Year of Publication2015
JournalPest Management Science
Journal citation71 (3), pp. 459-466
Digital Object Identifier (DOI)https://doi.org/10.1002/ps.3860
PubMed ID25052810
Open accessPublished as ‘gold’ (paid) open access
FunderDEFRA - Department for Environment, Food and Rural Affairs UK
Chemicals Regulation Directorate (CRD) of the Health and Safety Directorate
HGCA - Home Grown Cereals Authority
VSN International
Lawes Agricultural Trust (LAT)
Biotechnology and Biological Sciences Research Council
Funder project or codeDelivering Sustainable Systems (SS) [ISPG]
Development of an integrated pest management strategy for control of pollen beetle in winter oilseed rape
Movement and spatial ecology in agricultural landscapes
Statistics Department (Rothamsted)
Publisher's version
Grant IDLK09108

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