ISSN 2375-0707
African Journal of Environmental Economics and Management ISSN 2375-0707 Vol. 9 (1), pp. 001-006, January, 2021. © International Scholars Journals
Full Length Research Paper
Toxicological evaluation of tannery industry waste water on Oreochromis mossambicus
P. S. Navaraj* and J. Yasmin
Department of Zoology, Yadava College, Madurai, India.
Accepted 18 October, 2020
Abstract
This paper investigates the impact of tannery industry wastewater on O. mossambicus. The histopathological changes observed in gills, liver, kidney and brain of the studied fish have demonstrated the quality status of industrial waste water. In the vital organs, the following marked changes were observed: filament cell proliferation, cellular infiltration, haemorrhage and epithelial lifting in gills, vacuolation of hepatocytes and necrosis in liver, exfoliation and swollen with pyknotic nuclei in kidney and enlarged pyramidal cells, binucleated nuclei, vacuolation, and necrosis in brain. These changes might be due to the various components of tannery wastewater on fish. Hence, proper treatment of tannery industry wastewater is highly recommended through this study.
Key words: Oreochromis mossambicus, acute toxicity, histopathology, tannery mill wastewater, liver, gills, kidney, brain.