Cypermethrin induced protein metabolism in the freshwater fish Cirrhinus mrigala (Hamaliton).

The effect of cypermethrin on protein content of the gill, liver, and muscle tissue was estimated in fish, Cirrhinus mrigala. Fish were exposed to lethal and sublethal concentrations of cypermethrin (5.13 microg/l and 1.026 microg/l) for 1, 2, 3, 4 and 1, 7, 14, 21 days. The glutamine and urea levels were significantly increased in all tissues, whereas depletion of the ammonia level occurred on all the exposure days. At sublethal concentrations at 21 days, however, the ammonia level increased and glutamine and urea levels decreased.