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INSECTICIDE RESISTANCE IN NEW BRUNSWICK POPULATIONS OF THE COLORADO POTATO BEETLE (COLEOPTERA: CHRYSOMELIDAE)

Published online by Cambridge University Press:  31 May 2012

Gilles Boiteau ,
R.H. Parry  and
C.R. Harris
Gilles Boiteau
Affiliation:
Agriculture Canada Research Station, Fredericton, New Brunswick, Canada E3B 427
R.H. Parry
Affiliation:
New Brunswick Department of Agriculture, Florenceville, New Brunswick, Canada E0J 1K0
C.R. Harris
Affiliation:
Agriculture Canada Research Centre, University Sub Post Office, London, Ontario, Canada N6A 5B7
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Abstract

A study conducted between 1982 and 1985 established the presence of a limited number of populations of Colorado potato beetle, Leptinotarsa decemlineata (Say) (Coleoptera: Chrysomelidae), resistant to carbofuran in New Brunswick. Additional laboratory tests with two field-collected strains indicated that both were resistant to endosulfan; one strain also showed 43- and 37-fold levels of resistance to carbofuran and phosmet, respectively, and low-level (< 10-fold) resistance to permethrin, fenvalerate, disulfoton, and aldicarb. There has been no measurable spread of resistance.

Résumé

Une étude conduite entre 1982 et 1985 a établi la présence au Nouveau-Brunswick d’un nombre limité de populations de doryphores de la pomme de terre, Leptinotarsa decemlineata (Say) (Coléoptère : Chrysomelidae), résistantes au carbofuran. Des essais additionnels en laboratoire sur deux races recueillies au champ indiquèrent qu’elles étaient toutes deux résistantes à l’endosulfan. Une des races était 43 et 37 fois plus résistante que l’autre au carbofuran et au phosmet, respectivement, avec en plus un faible degré de résistance (< 10 fois) à la perméthrine, au disulfoton et à l’aldicarbe. La résistance ne s’est pas répandue de façon mesurable.

Type
Articles
Information
The Canadian Entomologist , Volume 119 , Issue 5 , May 1987 , pp. 459 - 463
Copyright
Copyright © Entomological Society of Canada 1987

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