Mala Kumari

Indiscriminate use of pesticides in agriculture fields caused water pollution in many regions of the world. The aquatic ecosystem has been getting contaminated with pesticides faced with threat of fish biodiversity loss. The present study includes the haematological parameters changes of the fish Clarias batrachus (Linn.) exposed to a sublethal concentrations (0.02 ppm) of synthetic pyrethroid, deltamethrin for 20 days. It was found that in treated fish various parameters of haematology, such as Hb, RBC, WBC values decreases while in DLC, Neutrophil, Monocytes and Eosinophil values increase. So, the present study could be helpful to monitering the aquatic pollution and in fish production. It is suggested that more suitable to culture at water pesticides deltamethrin concentration of < 0.02 mg/l for optimum growth performance and survival rate than other water conditions.

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