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Control of Larvae of the Common Cattle Grub (Diptera: Oestridae) with Animal Systemic Insecticides

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Small groups of government-owned cattle were given titrated dosages of labeled animal systemic insecticides suggested for systemic control of larvae of the common cattle grub, Hypoderma lineatum (Villers). Data on the effectiveness of these replicated treatments were combined and subjected to probit analysis. Of 10 treatments suggested for control of cattle grubs, the label-listed dosages of coumaphos spray, crufomate pouron (EC diluted with water or 12% ready to use), fenthion pouron, phosmet spray or pouron, and trichlorfon pouron exceeded the calculated LD90. Also, the highest level of the label-listed dosage of fenthion Spotton, but not the minimum level, exceeded the calculated LD90. Although the label-listed dosage of famphur pouron afforded practical control (>89%) of cattle grubs, the calculated LD90 exceeded the label-listed dosage because of the effectiveness of lower dosages. With 4% pouron of coumaphos, the label-listed dosage failed to exceed the calculated LD90 dosage. Subcutaneous injections of Ivermectin, Merck MK-933 (22,23-dihydroavermectin Bl), were highly effective systemically at dosages of 0.2 µg/kg to 200 µg/kg; the calculated LD90 was about 0.1 µg/kg.

Document Type: Research Article

Publication date: April 1, 1984

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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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