Abstract
The major beds of oyster along the central-west coast of India are exposed to different anthropogenic activities and are severely exploited for human consumption. In this viewpoint, tissues of oyster Crassostrea madrasensis, C. gryphoides and Saccostrea cucullata were analyzed for Cu, Ni, Cd and Pb concentrations (dry weight) from Chicalim Bay, Nerul Creek and Chapora Bay in pre-monsoon, monsoon and post-monsoon seasons. A higher concentration of Cu (134.4–2167.9 mg kg−1) and Cd (7.1–88.5 mg kg−1) was found, which is greater than the recommended limits in all the three species (and sites). Moreover, significant (p < 0.05) variations were observed for all the metals concentrations among the species, seasons and sites. The high concentrations of Cd and Cu in tissues of edible oyster pose a threat to human health. Therefore, continuous monitoring, people awareness and a stringent government policy should be implemented to mitigate the metal pollution along the studied sites.
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Acknowledgments
The authors are thankful to S.W.A. Naqvi, Director, CSIR-NIO for his encouragement and providing all facilities to carry out this work. We are also grateful to Dr. B. N. Nath for providing chemicals and laboratory facilities for sample analysis. The first author would like to acknowledge Council of Scientific and Industrial Research (CSIR), India for providing the fellowship to carry out the Ph.D. research. We thank the anonymous reviewers for their insightful comments on the manuscript. This is NIO contribution no. 5954.
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Shenai-Tirodkar, P.S., Gauns, M.U. & Ansari, Z.A. Concentrations of Heavy Metals in Commercially Important Oysters from Goa, Central-West Coast of India. Bull Environ Contam Toxicol 97, 813–819 (2016). https://doi.org/10.1007/s00128-016-1956-7
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DOI: https://doi.org/10.1007/s00128-016-1956-7