Some Effects of Gamma Radiation on the Horn Fly1

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Both sexes of the horn fly, Haematobia irritans (L.), were sterilized hy irradiating pupae with a gamma ray dosage of 5000 from a cobalt-60 source. In every test in which irradiated pupae mixed with normal pupae wen allowed to emerge together in sereened cages, the resulting eggs were less viable than control eggs, which indicated that treated males competed for mates wit h normal males with some success. Horn fly longevity in these tests was apparently unaffected by the sterilizing dosage. Methods are presented for obtaining horn fly eggs, for mass rearing these flies in the laboratory, and for sexing the newly emerged adults.

Document Type: Research Article

Publication date: April 1, 1964

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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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