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

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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.

AuthorsFoster, S. P., Denholm, I., Poppy, G. M., Thompson, R. and Powell, W.
Abstract

Insecticide-resistant clones of the peach-potato aphid, Myzus persicae (Sulzer), have previously been shown to have a reduced response to aphid alarm pheromone compared to susceptible ones. The resulting vulnerability of susceptible and resistant aphids to attack by the primary endoparasitoid, Diaeretiella rapae (McIntosh), was investigated across three spatial scales. These scales ranged from aphids confined on individual leaves exposed to single female parasitoids, to aphids on groups of whole plants exposed to several parasitoids. In all experiments, significantly fewer aphids from insecticide-susceptible clones became parasitised compared to insecticide-resistant aphids. Investigations of aphid movement showed at the largest spatial scale that more susceptible aphids than resistant aphids moved from their inoculation leaves to other leaves on the same plant after exposure to parasitoids. The findings imply that parasitoids, and possibly other natural enemies, can influence the evolution and dynamics of insecticide resistance through pleiotropic effects of resistance genes on important behavioural traits.

Year of Publication2011
JournalBulletin of Entomological Research
Journal citation101 (6), pp. 659-666
Digital Object Identifier (DOI)doi:10.1017/S0007485310000623
Open accessPublished as non-open access
Funder project or codeCentre for Sustainable Pest and Disease Management (PDM)
Centre for Mathematical and Computational Biology (MCB)
Ecological and behavioural side-effects affecting the evolution of insecticide resistance in the aphid Myzus persicae
Application of statistical methods to predictive biology
Output statusPublished
Publication dates
Online21 Dec 2010
Publication process dates
Accepted14 Sep 2010
Copyright licensePublisher copyright
ISSN0007-4853
PublisherCambridge University Press (CUP)

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