Abstract
The present study was conducted to analyse microcystin concentrations in Lakshmikund pond, Varanasi, India, as well as in carp and catfish of the pond. The concentrations of microcystin were found well above the WHO guidelines (1 µg/L) both for the dissolved and particulate fractions of bloom samples. The microcystin concentrations in different organs of carp and catfish were in the following sequence; liver > gut > kidney > gall bladder > gills > muscles and gut > liver > kidney > gall bladder > gills > muscles, respectively. The bioaccumulation of microcystin in carp and catfish was negatively correlated with body weight, and showed species specificity. The higher bioaccumulation of microcystin in muscles of catfish (>tenfold) over carp indicates a possible threat to human beings on consumption of catfish. Therefore, to avoid animal and human intoxication, routine analyses of microcystin in pond water as well as fishes are strongly recommended.
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Acknowledgments
The present study acknowledges the receipt of fellowship from Department of Science and Technology, New Delhi, as INSPIRE-programme to Shweta Singh (IF 10178, Date: 8th October, 2010). RKA is thankful to UGC (University Grants Commission), New Delhi, Project Code No. P-01/623 for financial support. We gratefully acknowledge the contribution of Dr. Alok Kumar Ravi, Department of Ocular Pharmacology and Pharmacy, Dr. R. P. Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, for providing facility of LC–MS for microcystin detection.
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Singh, S., Asthana, R.K. Assessment of Microcystin Concentration in Carp and Catfish: A Case Study from Lakshmikund Pond, Varanasi, India. Bull Environ Contam Toxicol 92, 687–692 (2014). https://doi.org/10.1007/s00128-014-1277-7
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DOI: https://doi.org/10.1007/s00128-014-1277-7