Impact of Vellalore municipal sewage water on the gill, liver and kidney of Freshwater fish, Cyprinus carpio
S. Binukumari* and Vasanthi. J
P.G. and Research Department of Zoology, Kongunadu Arts and Science College, Coimbatore-641 029, Tamil Nadu (India) Email:binu.kumari@rediffmail.com Mob:9894721285
ABSTRACT
Water pollution induces pathological changes in fish.As an indicator of exposure to contaminants,histology represents a useful tool to assess the degree of pollution.The municipal sewage sample was collected from Vellalore station of sanganur canal(open drainage)at Coimbatore.The Freshwater fish, Cyprinus carpio were selected as the test animal.1/10th of 72 hour LC50 was taken as sublethal concentration for sewage water.After the stipulated period of exposure (72hrs, 10days, 20days) fishes were sacrificed and tissues viz gill, liver and kidney were isolated and used for histopathological studies. It was found that degeneration of epithelial lining in gills.The liver and kidney showed severe necrosis and enlargement of Bowman’s space.