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Methoprene: Field Tested as a Feed Additive for Control of Face Flies

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In 1975, when methoprene was fed to grazing cattle in a block formulation at an average rate of 0.54 mg AI/kg body wt, bioassays and counts of adult flies indicated that populations of Musca autumnalis De Geer were reduced. In 1976, when methoprene was fed to similar cattle in a loose mineral supplement at an average rate of 0.07 or 0.13 mg AI/kg body wt, 45–90% of face fly pupae did not eclose, but counts of adults on the cattle were not reduced markedly. In both years, counts of adult horn flies, Haematobia irritans (L.), were lower on the treated herd than on the check herd.

Document Type: Research Article

Publication date: April 1, 1978

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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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