Laboratory Evaluation of a Sustained-Release Famphur Bolus Against Gulf Coast and Lone Star Ticks Feeding on Hereford Heifers

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Abstract:

Fifty % famphur boluses orally administered to cannulated Hereford heifers weighing 180 kg were found to release an avg 304 mg/bolus/day over a 60-day period. Four-5 boluses were needed to provide a dosage of ca. 7 mg/kg/day. In 3 sequential experimental groups, treated and control heifers were challenged at 7–25, 26–45, and 46–64 days after treatment with the 3 feeding stages of the Gulf Coast tick, Amblyomma maculatum Koch, and the lone star tick, A. americanum (L.). Famphur boluses provided 100, 99, and 99% estimated cumulative control of A. maculatum and 71, 86, and 60% estimated cumulative control of A. americanum. respectively, for the 3 experimental groups. Clinical signs of organophosphate poisoning were not observed among treated heifers.

Document Type: Research Article

Publication date: April 1, 1979

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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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