Temperature-dependent Pyrethroid Resistance in a Pyrethroid-selected Colony of Heliothis virescens (F.) (Lepidoptera: Noctuidae)

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Abstract:

Laboratory selection of pyrethroid-tolerant, field-collected tobacco budworm, Heliothis virescens (F.), larvae produced a strain with highly temperature-dependant resistance to fenvalerate, flucythrinate, and permethrin. Negative temperature coefficients of toxicity at 26 versus 16°C are 27-, 138-, and 13-fold, respectively, for these three pyrethroids. These values are the largest ever reported for this species. At 16°C, the toxicity of two of the three pyrethroids examined approaches published values for susceptible strains at the same temperature. A knock-down type of resistance may be present because there is no significant effect on pyrethroid toxicity by piperonyl butoxide or S,S,S-tributyl phosphoro-thioate pretreatment, and because there is high cross-resistance to DDT. In the evaluation of crop-protection strategies, this form of resistance (which is severe at higher temperatures) could go unnoticed at low temperatures.

Document Type: Research Article

Publication date: April 1, 1987

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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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