alexa Studies on the oxidative stress and gill histopathology in Channa punctatus of the canal receiving heavy metal-loaded effluent of Kasimpur Thermal Power Plant.
Agri and Aquaculture

Agri and Aquaculture

Journal of Aquaculture Research & Development

Author(s): Javed M, Usmani N, Ahmad I, Ahmad M

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Abstract Some investigations were made on the canal water and inhabiting fish Channa punctatus at Kasimpur, district Aligarh (U.P.). It is a prime source for drinking, washing, and irrigation which was found to be receiving effluent from the adjoining Harduaganj Thermal Power Plant. The water samples were found to contain heavy metals, and the values obtained for Fe (8.71 mg L(-1)) and Ni (0.12 mg L(-1)) were beyond the recommended levels set by UNEPGEMS. C. punctatus was found to be the predominant fish in this canal. Fishes' gills are directly exposed to the ambience; hence, the changes are expected to be more prominent. Among the analyzed heavy metals, bioaccumulation of Zn (500.41 mg kg(-1) dry weight (dw)) was highest and Ni (13.93 mg kg(-1) dw), the least. Increased levels of lipid peroxidation (LPO) as well as antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), and glutathione-S-transferase (GST) were found in the gills of the test fishes. The level of reduced glutathione (GSH), a nonenzymatic antioxidant, was quite expectedly lower than that in the reference fish. The gills of inhabiting fishes contained several lesions like necrosis, epithelial lifting, lamellar fusion, hyperplasia, syneching, infiltration of lymphocytes, and bridging in gill tissue. The present study demonstrated that wastewater/effluent released from thermal power plant containing heavy metals has strong potential to affect the physicochemical properties of the water and well-being of aquatic living organisms. This article was published in Environ Monit Assess and referenced in Journal of Aquaculture Research & Development

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