Acute toxicity studies of hexavalent chromium in the common carp, Cyprinus carpio

Tayybah, S.; Tanveer, A. . Dept. of Zoology; Muhammad, A.

Acute toxicity studies of hexavalent chromium in the common carp, Cyprinus carpio

2005

Tayybah, S. (Fisheries Research and Training Inst., Lahore (Pakistan)) | Tanveer, A. (Punjab Univ., Quaid-e-Campus, Lahore (Pakistan). Dept. of Zoology) | Muhammad, A. (Fisheries Research and Training Inst., Lahore (Pakistan))

The effect of hexavalent chromium [Cr (VI)] on the static bioassay of Cyprinus carpio (500 plus minus 9.5g body weight) was assessed by exposing randomly selected 70 breeders to 50, 100, 150, 200, 250, 300 and 350mg/l Cr (VI) dosage for 96 hours in cemented tanks (250 rgm size) @ 10 breeders/tank under optimal conditions to find out the lethal concentration at which fifty percent mortality (LC50) has occurred. Control group containing 10 breeders / tank was also maintained for the same period. Results showed LC50 value of 191mg/I by Finney's probit analysis. It was further observed that toxicity of Cr (VI) increased in C. carpio with the increase in time and concentration of Cr (VI) as compared to control.

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