Field Competitiveness of Boll Weevils (Coleoptera: Curculionidae) Sterilized by the Feeding of Chemosterilants Followed by Irradiation or Fumigation

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Abstract:

The competitiveness of boll weevils, Anthonomus grandis Boheman, sterilized by three methods was measured in isolated 0.2 ha plots of cotton in 1981. Weevils sterilized by feeding on a diet containing 0.1% of an ecdysteroid, 3,514α-trihydroxy-5-cholest-7-en-6-one, followed by either irradiation (10 krad in N2) or fumigation (100 min at 30°C in bisazir) were significantly more competitive than those sterilized by feeding on a diet containing 100 ppm diflubenzuron and irradiated (10 krad in N2). Laboratory quality control tests conducted in conjunction with the field tests indicated that the ecdysteroid-fed, irradiated males had a higher mating capability, lived longer, and were just as sterile as the difluhenzuron-fed irradiated males. All three treatments caused complete or near complete sterility in females.

Document Type: Research Article

Publication date: June 1, 1984

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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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