Relative Toxicity of Selected Insecticides to Bacterial Populations in Waste Disposal Lagoons1


Source: Journal of Economic Entomology, Volume 60, Number 2, April 1967 , pp. 467-468(2)

Publisher: Entomological Society of America

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The toxicity of several insecticides to bacterial populations in waste-disposal lagoons was compared at five concenntrations. DursbanĀ® (O,O-diethyl O-(3,5,6-trichloro-2- pyridyl) phosphorothioate) and naled caused the highest levels of mortality to the bacterial population, having LD50's of 0.028 and 0.02%, respectively. AbateĀ® (0,0- dimethyl phosphorothioate O,O-diester with 4,4'-thiophenol) and fenthion with LD50's of 0.9 and 0.66%, respectively, caused the lowest mortality. Bacterial mortality as low as that found in tests using 0.0001% (1 ppm) concentrations would probably not cause a functional disruption of the lagoon process. To control mosquito breeding the daily addition of fecal material along with bacterial development in a lagoon could offset the bacterial mortality caused by insecticide application at 1 ppm or less.

Document Type: Research Article

Publication date: April 1, 1967

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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