Detection of Resistance to Pyrethroids in Field Populations of Cotton Jassid (Homoptera: Cicadellidae) from Pakistan

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Toxicity of 8 pyrethroids was determined in adult populations of cotton jassid, Amrasca devastans (Distant), during 1995–1998 using a leaf-dip method. There was very low jassid resistance to alphacypermethrin, fenpropathrin, bifenthrin, lambdacyhalothrin, and etofenprox. Resistance to cypermethrin and deltamethrin was generally very low as well; but several populations did show a low to moderate level of resistance to these compounds and one population even exhibited a very high resistance to deltamethrin when the mortality was assessed after 24 h. Moderate to high resistance was found to zetacypermethrin in 6 of 8 populations tested. This development of resistance to some pyrethroids in the Pakistani populations of jassid is a serious cause for concern and it underscores the need for effective management at the initial stage of development.

Keywords: Amrasca devastans; Pakistan; insecticide resistance; pyrethroids

Document Type: Research Article

Publication date: December 1, 1999

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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