Acute toxicity of selected organophosphorus insecticides (OPs; chlorpyrifos, methyl parathion, diazinon, and malathion) was determined for individual OPs and binary combinations of the OPs with atrazine to larvae of the midge Chironomus tentans. Atrazine individually was not acutely toxic even at high concentrations (10,000 mg/L); however, the presence of atrazine at much lower concentrations (...

Effect of Chlorpyrifos (Dursban) an organophosphate insecticide on the glycogen, cholesterol, protein, alkaline phosphatase and acid phosphatase in liver in Channa punctatus (Bloch) exhibited notable alterations. Liver being the main site of metabolic activity in body and highly active in both toxifying and detoxifying insecticides, was selected for the study purpose. Chlorpyrifos insecticide c...

The presence of insecticide in the environment, due to extensive use in agriculture is of potential toxicological concern for fish. Histotoxicological studies have been widely used as biomarkes in the evaluation of the health of fish exposed to the pesticides studies. In the present study the hazardous effect of the organophosphate insecticide, Fenitrothion on the histology of the fresh water f...