Sheep Bot Fly Control Tests¹

Author: PFADT, ROBERT E.

Source: Journal of Economic Entomology, Volume 57, Number 6, December 1964 , pp. 928-931(4)

Publisher: Entomological Society of America

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Abstract:

Several systemic insecticides applied in different ways effectively reduced sheep bots, Oestrus ovis L., infesting lambs. Nasal sprays of dichlorvos in mineral oil at rates of 1.2 to 4.2 mg/kg of sheep reduced bots 87% to 99%. Doses of 4.7 to 9.8 mg/kg reduced bots 99% to 100% but were toxic to the sheep.

When administered as oral drenches or feed additives, Bayer 9017 (O,O-diethyl O- (3,5-dimethyl-4-methyl thiophenyl) phosphorothioate) at 30 mg/kg and Bayer 9018 (O,O-dimcthyl O-(-3,5-dimethyl-4-methyl thiophenyl) phosphorothioate) at 40 mg/kg reduced bots 99% to 100%. Both compounds showed promise as pour-on treatments.

A nasal spray of Bayer 9017 at 5.1 mg/kg reduced buts 97%; a nasal spray of Bayer 9018 at 5.9 mg/kg reduced bots 54%; a nasal spray of trichlorfon-coumaphos at 5.1 mg/kg reduced bots 87%.

A pour-on of trichlorfon applied at 100 mg/kg reduced bots 56%; a pour-on of Famophos (O-p- (dimethylsulfamoyl) phenyl O,O-dimethyl phosphorothioate) at 100 mg/kg was ineffective.

Document Type: Research article

Publication date: 1964-12-01

More about this publication?

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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