International Journal of Zoology Studies

International Journal of Zoology Studies


International Journal of Zoology Studies
International Journal of Zoology Studies
Vol. 3, Issue 2 (2018)

A review on contamination, bioaccumulation and toxic effect of cadmium, mercury and lead on freshwater fishes


Kausik Mondal, Sanjib Ghosh, Salma Haque

Heavy metal pollution in fresh water aquatic systems is a threat for ecosystem as well as for human health and economy. Various routes of contamination of Cd, Hg and Pb have been reported. Cd, Hg and Pb are so dangerous and harmful because of their persistent nature. Cadmium among these three culprits is the most dangerous contaminant that adversely affects growth, reproduction and behaviour of fresh water fishes. Mercury is a potent endocrine disrupter that vigorously impacts on fish reproduction and metabolism. Lead is a neurotoxicant that create behavioural disputes in fish population.
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