Accumulation of some heavy metals cd, cu, pb and zn in mugil cephalus, perna viridis and penaeus monodon

In the present study Mugil cephalus, Perna viridis and Penaeus monodon was exposed to cadmium, copper, lead and zinc under long term chronic toxicity test to investigate the bioaccumulation pattern of cadmium, copper, lead and zinc to the three marine test organisms. Treated test organisms under long term chronic toxicity test showed that the concentration of heavy metals in the tissues were highly significant (P<0.001) when compared with control. The order of concentration in the tissues of M. cephalus was Zn>Cu>Pb>Cd, P.viridis accumulated in the order of CdZn>Pb>Cd. Knowledge on accumulation and distribution of metals in the soft tissues may help us to understand the processes involved in the uptake and excretion of metals. More studies should be conducted in the future to determine the potentials of Mugil cephalus, Perna viridis and Penaeus monodon as biomonitoring agents in heavy metal pollution.