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Bull Environ Contam Toxicol. 2012 Dec;89(6):1142-7. doi: 10.1007/s00128-012-0860-z. Epub 2012 Oct 18.

Environmental monitoring and health risk assessment of African catfish Clarias gariepinus (Burchell, 1822) cultured in rural ponds, India.

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Exotic Germplasm Section of Fish Health Management Division, National Bureau of Fish Genetic Resources, Canal Ring Road, PO Dilkusha, Lucknow, 226002 Uttar Pradesh, India.


Water quality monitoring of Clarias gariepinus culture ponds (n = 27) revealed poor physico-chemical conditions and metal contaminants in fish tissues (n = 324). Human health risk assessment for some heavy metal contamination delineated low risk in general except for Aluminium (Al), Iron (Fe) and Lead (Pb) which accumulated significantly (p < 0.05) high in tissues. Health risks values were 6.3 × 10(-3)-9.6 × 10(-3) for Al; 3 × 10(-3)-9.7 × 10(-3) for Fe and 1.15 × 10(-5)-9.3 × 10(-6) for Pb respectively suggesting that contamination of Pb particularly in ponds fed with chicken waste (CW) was posing high risks.

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