Vol. 2, Issue 5 (2017)
Concentration of copper in gills and muscles of six species of shellfish from Pulicat Lake, Tamil Nadu, India
Author(s): Dhinamala K, Shalini R, Pushpalatha M, Arivoli S, Samuel T, Raveen R
Abstract: Heavy metals discharged into the marine environment can damage both marine species diversity and ecosystem due to their toxicity and can enter and contaminate estuarine waters. The contamination by heavy metals negatively affects aquatic biota and poses considerable environmental risks and concerns. In the present study, the concentration of copper in the gills and muscles of six species of shellfish viz., Fenneropenaeus indicus, Fenneropenaeus monodon, Fenneropenaeus semisulcatus, Scylla serrata, Meretrix casta and Clibanarius longitarsus from Pulicat lake, Tamil Nadu, India on a monthly basis for a period of two years from January 2011 to December 2012 during four seasons viz., postmonsoon, summer, premonsoon and monsoon were analysed. The concentration of copper in the gills and muscles of the six shellfish species exhibited seasonal as well as species specific variations. The overall results indicate the muscle tissues of Scylla serrata to accumulate the maximum amount of copper (9.36µg/g) during postmonsoon in 2011. In conclusion, the results of the present study has revealed that the concentration of copper in the gills and muscles of the six shellfish species studies were within the safe limits, further contamination of this important water body should be prevented by continued biomonitoring studies to protect the shellfish and its consumers.