Resistance in Aedes aegypti 1 to Chemosterilants: Effect of Apholate Selection on Resistance to Apholate, Tepa, and Metepa2

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Abstract:

A colony of the yellow-fever mosquito, Aedes aegypti (L.) , which had been selected by exposing the larvae to 5-25 ppm of apholate for 43 generations, was 20 times as resistant as the regular colony to the sterilizing effect of larval treatments with apholate. Little cross resistance to tepa was evident, though the selected strain did show a 3- to 4-fold increase in resistance to metepa. At high con centrations all 3 compounds caused extensive pupal and adult mortality, although the apholate-resistant colony could withstand higher dosages of apholate (but not tepa or metepa) than regular colony without any detrimental effect on development.

Adults of the selected colony showed only a 6- to 7-fold increase in resistance to the sterilizing effects of apholate when it was administered by ad libitum feeding in sugar solution.

Document Type: Research Article

Publication date: December 1, 1967

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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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