Studies on effects of chronic exposure of endosulfan to Labeo rohita

 

T.S. Saravanan*, P. Rajesh and M. Sundaramoorthy

 

Post Graduate &? Research Department of Zoology, Jamal Mohamed College (Autonomous), Tiruchirappalli - 20, India

(Received: May 11, 2009; Revised received: November 29, 2009; Accepted: January 01, 2010)

 

Abstract: The major carp, Labeo rohita (Hamilton) upon chronic exposure to endosulfan showed hyperglycemia (60.11 to 117.71 mg 100 ml^-1) and hypercholestemia (51.78 to 76.87 mg 100 ml^-1) of blood when compared to the control. As a result of the insecticidal stress, the tissue metabolites and enzymes like AST and ALT revealed significant alterations. The hormones T3 (0.53 to 1.35 ?ml l^-1) and TSH (0.48 to 0.32 ?ml l^-1) were also affected by the endosulfan even in sub lethal concentration. Signficant histopathological alterations were observed in liver and gill of treated fishes. The reason for the significant alterations in tissue sugars, aminoacids, cholesterol, protein,? enzymes and homones and the histopathological changes is discussed.

Key words: Labeo rohita, Endosulfan, Blood, Liver, Gill, Enzymes and Hormones

Copyright ? 2010 Triveni Enterprises. All rights reserved. No part of the Journal can be reproduced in any form without prior permission. Responsibility regarding the authenticity of the data, and the acceptability of the conclusions enforced or derived, rest completely with the author(s).