Evaluation of a New Insecticide for Use in Screwworm Adult Suppression System Pellets
Authors: Peterson II, Richard D.; Coppedge, James R.; Brown, Harold E.; Petersen, Del Var H.
Source: Journal of Economic Entomology, Volume 76, Number 4, August 1983 , pp. 824-827(4)
Publisher: Entomological Society of America
Abstract:In laboratory bioassays using adult screwworms, Cochliomyia hominivorax (Coquerel), screwworm adult suppression system (SWASS) pellets formulated with 2% dichlorvos, 1% trichlorfon, and 2% chlorpyrifos killed 90, 85, and 58%, respectively. Gas-liquid chromatographic analysis showed that, after 7 days, only 15%, by weight, of dichlorvos remained in a pellet, whereas 94% of the trichlorfon remained. Field population suppression 2 to 7 days after pellets were aerially applied was 48 to 78% when pellets contained dichlorvos, and 50 to 83% when pellets contained trichlorfon. Since trichlorfon is longer lived than dichlorvos, and slightly less toxic to mammals (acute oral LD50, in rats 144 to 184 mg/kg), and less insecticide is needed to achieve similar results, trichlorfon should be considered as an alternate insecticide for use in SWASS pellets.
Document Type: Research Article
Publication date: August 1, 1983
- 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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