Gamma Irradiation of the Melon Fly: Laboratory Studies of the Sexual Competitiveness of Flies Treated as Pupae 2 Days Before Eclosion or as 2-Day-Old Adults

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Gamma irradiation (6 krad 2 days before eclosion or 8 had 2 days after eclosion) induced 98–99% sterility in a laboratory strain of male Dacus cucurbitae Coquillett. Comparable females treated with 4 krad at the same ages were completely infecund. In trials with 5:1:1 ratios of sterile males-normal males-normal females, sexual competitiveness of males sterilized with 8 krad as 2-day-old adults was similar to that of males treated as pupae with 6 krad. The suppression of the fertility of normal flies by the introduction of sterile females was negligible.

Document Type: Research Article

Publication date: December 15, 1975

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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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