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Studies on the Control of Mosquitoes1 in Egypt by Means of Chemosterilants. II. Chemosterilization of Culex pipiens by Tepa and Hempa2

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Abstract:

Laboratory experiments on the chemosterilization of the northern house mosquito, Culex pipiens L., show that tepa was more effective than hempa, whether it was used in the larval breeding water (5 ppm) or mixed with the adult food (0.005%). Sterility by the residual effect of tepa proved very promising when mosquitoes were subjected to 10 mg/0.09 m2 on glass surfaces for 2 hours. Results on the mating competitiveness showed that treated males could compete successfully with untreated males. The percent sterility was progressively higher with increase in the ratio of treated males to normal males. However, no complete sterility was achieved even up to a ratio of 70 treated males: I normal male.

Document Type: Research Article

Publication date: February 1, 1970

More about this publication?
  • 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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