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Abstract:
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Present study consists the quantization of specific metals-- Cr, Cd, Pb, Zn and Cu observed in the experimental bivalve,
Villorita species. Bivalve specimens were collected seasonally from the identified three hot spots of Vembanad Lake. Soft
tissue concentrations of metals are very sensitive in reflecting changes in the ambient environment and hence important in
assessing the environmental quality. Concentrations of Zn in bivalves were fairly high compared to other metals. All the
stations showed a maximum concentration during premonsoon and minimum during the other two seasons. Levels of Pb,
Cu, Zn, Cd and Cr are between 0-6.17mg/kg, 0-17.224mg/kg, 1.916-255.163mg/kg, 0.325-4.133mg/kg, and 0-15.233mg/kg
respectively |