Journal of Environmental Biology

Zinc induced histological changes in brain and liver of Labeo rohita (Ham.)

 

K. Loganathan, B. Velmurugan, J. Hongray Howrelia, M. Selvanayagam and Bharat Bhusan Patnaik

Environmental Sciences and Biotechnology Research Unit, P.G. and Research Department of Zoology,

Loyola College (Autonomous), Chennai- 600034, India

 

(Received: 15 May, 2004 ; Accepted: 25 October, 2004)

 

Abstract: Labeo rohita fingerlings were exposed to zinc metal toxicity (5 and 10 ppm) for duration of 5 and 15 days. The histological changes were studied in brain and liver of the treated fish. The brain tissues showed enlarged pyramidal cells with extensive vacoulation while severe necrosis, haemorrhage and degeneration of hepatocytes were witnessed in the liver tissues.

 

Key words: Labeo rohita, Zinc, Histological changes.

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