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.

AuthorsMauchline, A. L., Cook, S. M., Powell, W. and Osborne, J. L.
Abstract

The use of semiochemicals for the manipulation of the pollen beetle, Meliethes aeneus (Fabricius) (Coleoptera: Nitidulidae), is being investigated for potential incorporation into a push-pull strategy for this pest, which damages oilseed rape, Brassica napus L. (Brassicaceae), throughout Europe. Previous laboratory behavioural studies using volatiles from non-host plants showed that M.aeneus is repelled by the odour of lavender, Lavendula angustifolia Mill. (Lamiaceae), essential oil. This article reports on semi-field and field trials to investigate this behaviour under more realistic conditions. Semi-field experiments were conducted to assess the relative importance of olfaction at different points in host location behaviour by M.aeneus. The results showed that oilseed rape plants treated with lavender odour were less colonised by M.aeneus in comparison with an untreated control, but that the treatment effect was much reduced if the lavender odour was applied after colonisation. The field experiment demonstrated that lavender odour caused a significant reduction in the number of adult M.aeneus infesting the oilseed rape plants in the treatment plots compared to the control plots. Overall, these findings are very encouraging for the future development of a push-pull pest control system.

KeywordsEntomology
Year of Publication2013
JournalEntomologia Experimentalis Et Applicata
Journal citation146 (3), pp. 313-320
Digital Object Identifier (DOI)doi:10.1111/eea.12030
Open accessPublished as non-open access
FunderBiotechnology and Biological Sciences Research Council
DEFRA - Department for Environment, Food and Rural Affairs UK
Funder project or codeCentre for Sustainable Pest and Disease Management (PDM)
Delivering Sustainable Systems (SS) [ISPG]
Output statusPublished
ISSN00138703
0013-8703
PublisherWiley

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