Acute toxicity of deet to a freshwater fish, Tilapia mossambica: effect on tissue glutathione levels

Mathai, AT.; Pillai, KS.; Deshmukh, PB.

Journal of Environmental Biology 102: 87-91


ISSN/ISBN: 0254-8704
Accession: 001746772

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Individuals of T. mossambica [Oreochromis mossambicus] (5-7 cm) were exposed to 120, 140 and 150 p.p.m. of deet (diethyltoluamide) for 96 h at 25-26.5 degrees C and pH 8.2-9.1. Glutathione levels in the liver, kidney and gills of the remaining live fish showed dose-dependent increases. Fish mortalities for the three repellent doses were 20, 70 and 70%, respectively, with a LC50 of 134.4 p.p.m.