EFFECTS OF CADMIUM CHLORIDE ON THE ATPASE ACTIVITY OF TILAPIA MOSSAMBICA, PETERSNILALOHIT HARICHANDANAbstract Effect of cadmium chloride (CdC12) on Brain, liver and muscle tissue of Tilapia mossambica was studied. At low concentration (1.20 ppm) of CdC12 the total ATPase (Mg Na+ K+- dependent ATPase) activity decreased in all tissues significantly during 7"' ,14"', 21st and 28th day of exposure. However when fish is transferred to toxicant free medium in 14'" day of recovery of Brain tissue shows further depletion and in 28'" day of recovery partial recovery was noticed. In liver and muscle tissue insignificant recovery was noticed during 14"' day of recovery. During 28"' day of recovery further recovery was seen. ATPase activity is also dependent upon Na', K+, Ca++, Mg++ ionic level in fish tissue. A significant decrease in ion level was also noted in 28' day of exposure.
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