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Incidence and distribution of insecticide-resistant strains of Myzus persicae (Sulzer) (Hemiptera: Aphididae) in england and wales in 1980–84

Published online by Cambridge University Press:  10 July 2009

C. Furk
Affiliation:
Ministry of Agriculture, Fisheries and Food, Harpenden Laboratory, Hatching Green, Harpenden, Herts., AL5 2BD, UK

Abstract

Between 1980 and 1984, a total of 2710 individuals of Myzus persicae (Sulzer) collected in England and Wales was tested by electrophoresis and classified as being susceptible (S), moderately resistant (R1) or strongly resistant (R2) to insecticides. Aphids sampled from oilseed rape from the Midlands and western and eastern England had the lowest frequencies of S and the highest frequencies of R1 aphids. Over all crops, eastern England had a low frequency of S and a high frequency of R1 aphids. R2 aphids were more common in northern England than in other areas of England and Wales but only on potatoes. There was no evidence of any increase in the incidence of resistant aphids (both R1 and R2) since a previous survey in 1976. Possible reasons for the distribution patterns of the three aphid types are discussed.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1986

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