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Substerilizing Doses of Gamma Irradiation to Produce Population Suppression in Plum Curculio1,2

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Abstract:

When Conotrachelus nenuphar (Herbst), reared in the laboratory on green thinning apples, were irradiated by cobalt00, longevity was reduced greatly when the dose was 8 krad, the amount necessary for complete sterilization of both sexes. However, when a substerilizing dose (6 krad) and a high overflooding ratio (40 treated males:l norma male: 1 normal female) were used, more than 60% of all males survived 3 weeks, and the number of larvae produced was decreased by 90%. Part of this reduction appeared to arise from harassment of the females by the great number of males. Testing of the sterile-release technique in the field appears to be justified.

Document Type: Research Article

Publication date: August 1, 1970

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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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