Journal of Environment and Sociobiology

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Effect of Some Heavy Metal (Zn, Cu, Pb) Pollutants and Microbial Load on the Edible Oyster (Saccostrea cucullata) in Sundarban, West Bengal


Affiliations
1 Department of Microbiology, Raja N. L. Khan Women’s College, Paschim Medinipur, Pin-721102, West Bengal, India
2 Department of Microbiology, Vidyasagar University, Paschim Medinipur Pin-721102, West Bengal, India
     

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Total bacterial count (TBC), total coliform (TC), total faecal coliform (TFC), E. coli and Bifidobacterium sp. in the flesh of edible oyster (Saccostrea cucullata), in three collecting stations of Sundarban, varied during different seasons of a year. The bacterial load was maximum in monsoon and minimum in pre monsoon. Heavy metal content in the flesh showed following sequence: Zn>Cu>Pb, with maximum values during monsoon and minimum values during pre-monsoon. Further, maximum antioxidant enzyme (Catalase and Superoxide dismutase) activities in the oyster were recorded during pre-monsoon which decreased in monsoon, while the level of lipid peroxidation (free radical) was minimum in pre-monsoon. It appears, therefore, that the antioxidant activity in oyster was inversely proportional to the heavy metal concentration in the flesh. Hence, monitoring of heavy metal content in the water of Sundarban estuary is considered vital towards the survivability of the oysters.

Keywords

Bacterial Load, Heavy Metals, Antioxidant Enzyme, Oyster, Sundarban.
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  • Effect of Some Heavy Metal (Zn, Cu, Pb) Pollutants and Microbial Load on the Edible Oyster (Saccostrea cucullata) in Sundarban, West Bengal

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Authors

Harekrishna Jana
Department of Microbiology, Raja N. L. Khan Women’s College, Paschim Medinipur, Pin-721102, West Bengal, India
Bivas Kumar Malik
Department of Microbiology, Raja N. L. Khan Women’s College, Paschim Medinipur, Pin-721102, West Bengal, India
Puspendu Shit
Department of Microbiology, Raja N. L. Khan Women’s College, Paschim Medinipur, Pin-721102, West Bengal, India
Partha Pratim Chakraborty
Department of Microbiology, Raja N. L. Khan Women’s College, Paschim Medinipur, Pin-721102, West Bengal, India
Keshab Chandra Mondal
Department of Microbiology, Vidyasagar University, Paschim Medinipur Pin-721102, West Bengal, India

Abstract


Total bacterial count (TBC), total coliform (TC), total faecal coliform (TFC), E. coli and Bifidobacterium sp. in the flesh of edible oyster (Saccostrea cucullata), in three collecting stations of Sundarban, varied during different seasons of a year. The bacterial load was maximum in monsoon and minimum in pre monsoon. Heavy metal content in the flesh showed following sequence: Zn>Cu>Pb, with maximum values during monsoon and minimum values during pre-monsoon. Further, maximum antioxidant enzyme (Catalase and Superoxide dismutase) activities in the oyster were recorded during pre-monsoon which decreased in monsoon, while the level of lipid peroxidation (free radical) was minimum in pre-monsoon. It appears, therefore, that the antioxidant activity in oyster was inversely proportional to the heavy metal concentration in the flesh. Hence, monitoring of heavy metal content in the water of Sundarban estuary is considered vital towards the survivability of the oysters.

Keywords


Bacterial Load, Heavy Metals, Antioxidant Enzyme, Oyster, Sundarban.

References