Evaluation of the acute Toxicity of Profenofos and its Effect on the Behavioral Changes in Freshwater Fish Labeo rohita

Profenofos is an organophosphate insecticide using for the control of insects. Particularly it is being used to control Lepidopteron mites on cotton, maize, sugar beet, soyabeans, potatoes, vegetables, tobacco and other crops. It is highly toxic to fish and aquatic invertebrates. Profenofos may reach surface waters through spray drift or surface runoff. The 96hrs LC₅₀ value of profenofos was determined using fingerlings of common edible freshwater fish Labeo rohita with a the length of the fish 6±8 cm, Average body weight 6.5± 7.5 gm at temperature 28±2°C. Calculated LC₅₀ values was 100 μg/L for the assay, the behavioral changes of fish exposed to profenofos including loss of balance, jerky movements were observed.