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Repression of Permethrin Resistance by Chlordimeform in the Tobacco Bud worm (Lepidoptera: Noctuidae)

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In a previous study, tobacco bud worm,Helios this viruses (F.), larvae were selected with a permethrin-chlordimeform mixture (1:1 wt/wt) at the LED80 By the F2 generation, the degree of resistance to the mixture was scarcely different from levels established in the F1 generation. To confirm the presence of the gene(s) responsible for resistance the permethrin-chlordimeform strain was then divided into two groups: the first received permethrin-chlordimeform selection pressure, whereas the second group received only permethrin pressure. This permethrin pressure produced a 6-fold increase in resistance levels in the latter group in seven additional generations. This study proved the gene(s) for resistance in the permethrin-chlordimeform strain were present, and the use of a permethrin-chlordimeform mixture may block resistance development.

Document Type: Research Article

Publication date: December 1, 1988

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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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