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Sterility and Longevity of Adult Range Caterpillars (Lepidoptera: Saturniidae) Reared from Irradiated Field-collected Pupae

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Studies were conducted from 1976 through 1979 to evaluate the potential for use of the sterile insect technique as a management strategy for the range caterpillar, Hemileuca oliviae Cockerell. Nonirradiated females mated with males exposed as pupae to 50 krad gamma radiation produced eggs with 97.8–99.4% sterility. Females exposed as pupae to dosages ranging from 2O to 60 krad produced eggs with 96–100% sterility when mated with nonirradiated males. Neither adult emergence nor longevity appeared affected by the irradiation levels used on field-collected pupae. A preliminary study in 1979 on competitiveness of irradiated males was inconclusive, but indicated some mating advantage for normal males. These data indicate that sterility levels acceptable for field control uses could be achieved. If economical mass-rearing techniques could be developed to produce pupae of uniform age and normal males do not have too much of an advantage in mating, irradiation could be an important tool in managing this pest.

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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