Behavior of Irradiated Boll Weevils. II. Reproduction and Mortality in Cages with Untreated Boll Weevils

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Abstract:

Mortality, egg production, and egg hatch were determined for female Anthonomus grandis Boheman which had been treated with 6388 or 12,775 rad of gamma irradiation and confined in various ratios with treated and/or untreated male and female weevils of the same age and strain. Both treatments sterilized the weevils, but egg hatch was reduced only when the ratio of treated (T) to normal (N) male weevils exceeded 10T:1N. When the treated group consisted of males only or males and females and the ratios were 20T:1N or 100T:1N, hatch was reduced. However, groups of treated females only had no effect on hatch at any ratio of treated to normal weevils. In a 35-day test, 4 weekly releases of irradiated weevils to maintain a cage population ratio of 100T:1N caused a reduction in hatch ranging between 70 and 90%.

Document Type: Research Article

Publication date: December 16, 1968

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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