Tests with Systemic Insecticides for the Control of Gasterophilus Larvae in Horses1

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Abstract:

Preliminary tests with 12 systemic insecticides were conducted in which horses were treated for control of larvae of the horse bot fly (Gasterophilus intestinalis (De Geer)) and the throat bot fly (G. nasalis (L.)). In tests with single animals, Bayer 37341 (O,O-diethyl O-(4-methylthio-3,5-xylyl) phosphorothioate) at 50 mg./kg. and butonate at 100 mg./kg. were effective in ridding horses of bots when administered by stomach tube, and Bayer 37341 and butonate at 50 mg./kg. and DDVP at 10 to 75 mg./kg. were effective when administered as a single dose in feed. An intramuscular injection of 30 mg./kg. and a pour-on treatment of 50 mg./kg. of Dipterex® (O,O-dimethyI2,2,2-trichloro-l-hydroxyethyl phosphonate) were both partially effective.

Document Type: Research Article

Publication date: February 1, 1963

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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