Acute toxicity of mosquitocidal compounds to young mosquitofish, Gambusia affinis

Toxicity of Florida mosquito larvicides and adulticides to 3-5 day old Gambusia affinis was determined in the laboratory. After 24-h exposure, the larvicides, temephos, fenoxycarb and petroleum distillates had LC50 values of 5.60, 1.05 and 593.4 ppm, respectively. After 24 h the adulticides resmethr...

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Bibliographic Details
Published in:	Journal of the American Mosquito Control Association Vol. 7; no. 2; p. 290
Main Authors:	Tietze, N S, Hester, P G, Hallmon, C F, Olson, M A, Shaffer, K R
Format:	Journal Article
Language:	English
Published:	United States 01-06-1991
Subjects:	Animals Carbamates - toxicity Culicidae Cyprinodontiformes Dose-Response Relationship, Drug Fenthion - toxicity Insecticides - toxicity Malathion - toxicity Naled - toxicity Phenylcarbamates Pyrethrins - toxicity Temefos - toxicity
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Summary:	Toxicity of Florida mosquito larvicides and adulticides to 3-5 day old Gambusia affinis was determined in the laboratory. After 24-h exposure, the larvicides, temephos, fenoxycarb and petroleum distillates had LC50 values of 5.60, 1.05 and 593.4 ppm, respectively. After 24 h the adulticides resmethrin, fenthion, naled and malathion had LC50 values of 0.007, 2.94, 3.50 and 12.68 ppm, respectively. The only compound toxic to young mosquitofish at maximum field application rates was resmethrin. However, in the light of earlier tests, aerially applied adulticides generally reach the water surface at reduced concentrations and thus probably pose little or no risk to mosquitofish populations.
ISSN:	8756-971X