Abstract: In the present investigation acute toxicity of potassium dichromate on Clarias batrachus (Linn) were observed. The fishes were exposed to 10.5, 12.5, 13.2 and 25.7 ppm of potassium dichromate for 96h duration. 96h Lc50 value for potassium dichromate was 13.2 ppm which was calculated by Probit analysis method. The physicochemical parameters of tap water used for experiment were also recorded pH 7.0-7.5, DO 8.5-10.0 mg/l, Total hardness 125.9 mg/l, Temperature 28.5-30.90c and Salinity 25.8-27.5psu.The morphological changes like mucus secretion from body surface, discoloration of skin, swelling on barbels, lesions on skin, muscular bleeding, and hemorrhage in fins were observed. Behavioral changes like unbalanced swimming, vertical and downward swimming, restlessness, loss of equilibrium and balance in water, jumping and jerking and difficulty in getting oxygen were also observed during the whole study. Therefore fish population exposed to chromium in natural lotic water bodies by different sources gets depleted.
Keywords: Behavioral changes, Clarias batrachus, Lc50, Morphological changes, Potassium dichromate.
Title: Acute Toxicity of Potassium Dichromate on Behavioral Response and Morphological Aspects of Clarias batrachus (Linn)
Author: Fozia Ali, A.K.Biswas, V.K.Kakaria
International Journal of Life Sciences Research
ISSN 2348-313X (Print), ISSN 2348-3148 (online)
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