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Freshwater Crayfish 2(1): 371-378 (1975)

PEER REVIEWED    RESEARCH ARTICLE

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The toxicity of the organophosphates Guthion® and Azodrin® to molting and nonmolting crawfish Procambarus clarkii (Girard)

Baker L  e-mail link

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Abstract

A routine static bioassay was done on newly molted and nonmolted crawfish, Procambarus clarkii (Girard), using azinphosmethyl (Guthion®) and momocrotophos (Azodrin®). LC50 values, calculated by three methods, two mathematical and one graphic, gave similar results. Since LC50 values for males and females were not significantly different, the data for both sexes were combined. Using one mathematical method, the LC50 value of Azodrin for nonmolters was 2.23 ppm with a range from 0.13 to 8.00 ppm and for molters was 2.52 ppm ranging from 0.25 to 8.00 ppm. With Guthion the LC50 value for nonmolters was 0.10 ppm ranging from 0.06 to 1.00 ppm and for molters was 0.05 ppm ranging from 0.03 to 2.00 ppm.

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Baker L. (1975). The toxicity of the organophosphates Guthion® and Azodrin® to molting and nonmolting crawfish Procambarus clarkii (Girard). Freshwater Crayfish 2(1):371-378. doi: 10.5869/fc.1975.v2.371

 

 

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