Compare of acute toxicity of herbicide, Atrazine, in four native fish of Khouzestan province including: Mesopotamichthys sharpeyi, Torgrypus, Luciobarbus esocinus and Luciobarbus xanthopterus

In this study the acute toxicity of herbicide, Atrazine, in four native fish of Khouzestan province including: Mesopotamichthys sharpeyi, Torgrypus, Luciobarbus esocinus and Luciobarbus xanthopterus were evaluated. For this purpose the "Organization for Economic Cooperation and Development" OECD method were used. Briefly each fish species were exposed to eight serial concentration of atrazine in triplicates (total of 24 aquariums) for 94 hours. Fish mortality were recorded daily in each concentration and data analysed with Probit software. Results showed that atrazine is toxic for all treated fish and its toxicity increased along with atrazine concentration as well as extension of exposure duration. The sensitivity of four tested fish to atrazine were significantly different (P