Reduced response of insecticide-resistant aphids and attraction of parasitoids to aphid alarm pheromone; a potential fitness trade-off
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, 37-46. (doi:10.1079/BER2004336).
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Response to the alarm pheromone, (E)-b-farnesene, produced by many species
of aphids, was assessed in laboratory bioassays using an aphid pest, Myzus persicae
(Sulzer), and its primary endoparasitoid, Diaeretiella rapae (McIntosh). This was
done in three separate studies, the first investigating responses of a large number
of M. persicae clones carrying different combinations of metabolic (carboxylesterase)
and target site (kdr) insecticide resistance mechanisms, and the other two
investigating the responses of young virgin female adult parasitoids. In M. persicae,
both insecticide resistance mechanisms were associated with reduced repellence
suggesting that each has a pleiotropic effect on aphid behaviour. In contrast, D.
rapae females were attracted to the alarm pheromone source. The implications of
this apparent fitness trade-off for the evolution and dynamics of insecticide
resistance, and the potential for using beneficial insects to combat resistance
development are discussed.
|Subjects:||Q Science > QH Natural history > QH301 Biology|
|Divisions:||University Structure - Pre August 2011 > School of Biological Sciences
|Date Deposited:||07 Aug 2008|
|Last Modified:||12 May 2013 01:16|
|Contributors:||Foster, S.P. (Author)
Denholm, I. (Author)
Thompson, R. (Author)
Poppy, G.M. (Author)
Powell, W. (Author)
|Date:||1 February 2005|
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