Bulletin of Entomological Research (1999) 89, 133-138

S.P. Foster, C.M. Woodcock, M.S. Williamson, A.L. Devonshire, I. Denholm and R. Thompson (1999)
Reduced alarm response by peach-potato aphids, Myzus persicae (Hemiptera : Aphididae), with knock-down resistance to insecticides (kdr) may impose a fitness cost through increased vulnerability to natural enemies
Bulletin of Entomological Research 89 (2), 133-138
Abstract: Response to alarm pheromone, an important component of aphid fitness, was studied in controlled laboratory bioassays using a large number of clones of Myzus persicae(Sulzer), collected from around the world, showing various combinations of knockdown (kdr) and esterase-based insecticide resistance. Kdr-homozygous (RR) and heterozygous (SR) genotypes showed much lower levels of disturbance after exposure to measured amounts of synthetic alarm pheromone, (E)-ß-farnesene, than aphids without kdr (SS). Our findings have potential major implications for the survival of M. persicae with kdr-based resistance, as these forms may suffer increased predation and parasitism. The data provide rare, but growing evidence, that the accelerated evolutionary process of resistance selection can produce mechanisms associated with a fitness cost in the absence of insecticides.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Steve Paul Foster, Ian Denholm, Martin S. Williamson

Research topic(s) for pests/diseases/weeds:
pesticide resistance of pest

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Myzus persicae