Competitiveness of Sterile Boll Weevils (Coleoptera: Curculionidae) Relative to a Native Population in Small Field Plots

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Sterile Anthonomus grandis grandis Boheman were 50.4% as competitive as native boll weevils in three 0.4-ha field plots. These weevils, released semiweekly for 2½ weeks, had been fed for 3 days on slabs of diet that contained 0.2% of an ecdysteroid, 3, 5, 14α-trihydroxy-5-cholest-7-en-6-one, and 0.03% each of two antibiotics, kanamycin and chloramphenicol, before irradiation (10 krad in nitrogen). The high degree of competitiveness was attributed to three factors: addition of effective antibiotics to the adult diet, use of the ecdysteroid as a chemosterilant for females, and shortening of the release interval to 3–4 days.

Document Type: Research Article

Publication date: February 1, 1986

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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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