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INCIDENCE OF INSECTICIDE RESISTANCE IN POPULATIONS OF COLORADO POTATO BEETLE, LEPTINOTARSA DECEMLINEATA (SAY) (COLEOPTERA: CHRYSOMELIDAE), ON PRINCE EDWARD ISLAND

Published online by Cambridge University Press:  31 May 2012

Jeff G. Stewart ,
George G. Kennedy  and
Antony V. Sturz
Jeff G. Stewart
Affiliation:
Agriculture and Agri-Food Canada, Research Centre, PO Box 1210, Charlottetown, Prince Edward Island, Canada C1A 7M8
George G. Kennedy
Affiliation:
Department of Entomology, North Carolina State University, Box 7630, Raleigh, North Carolina,USA 27695-7630
Antony V. Sturz
Affiliation:
P.E.I. Department of Agriculture and Forestry, PO Box 1600, Charlottetown, Prince Edward Island, Canada C1A 7N3
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Abstract

A survey of 65 populations of Colorado potato beetle, Leptinotarsa decemlineata (Say), from locations across Prince Edward Island in 1993 indicated that insecticide resistance was widespread, but was most prevalent in the western and central potato-producing areas. Of the populations surveyed, 31, 26, 19, and 4% were classified as resistant to permethrin, carbofuran, azinphos-methyl, and endosulfan, respectively. Of 53 populations surveyed for resistance to these four insecticides, 13, six, four, and one of the populations were classified as resistant to one, two, three, and four insecticides, respectively.

Résumé

Les résultats de l’inventaire de 65 populations de Doryphores de la pomme de terre, Leptinotarsa decemlineata (Say), en diverses localités dispersées de l’Île-du-Prince-Édouard, en 1993, indiquent que la résistance aux insecticides est répandue, mais prévaut surtout dans les régions productrices de pommes de terre de l’ouest et du centre. Parmi les populations inventoriées, 31% sont résistantes à la perméthrine, 26% au carbofurane, 19% au méthyl-azynphos et 4% à l’endosulfane. Chez 53 des populations testées, 13 sont résistantes à un des insecticides, six à deux, quatre à trois, et une population est résistante aux quatre insecticides.

[Traduit par la Rédaction]

Type
Articles
Information
The Canadian Entomologist , Volume 129 , Issue 1 , February 1997 , pp. 21 - 26
Copyright
Copyright © Entomological Society of Canada 1997

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