Effect of Trivalent chromium on glycogen metabolism in liver and gill of Fresh water fish Anabas testudineus (Bloch)
C. Padmaja, Sandeep Batham and Omdatt Rajput
Department of Zoology, Regional Institute of Education, Shyamla Hills, Bhopal-462013 (India) padmajareddychintala@gmail.com
ABSTRACT
Acute toxicity of trivalent chromium to the fresh water fish was studied. Fish were exposed to sublethal chromium concentration (10 ppm/l) under ambient pH 6 condition. Liver and gill, the target organs to the toxicant were analysed for glycogen metabolism. Glycogen depletion was noticed up to 4th day. From 7th day glycogen was not depleted. Lactate and pyruvate also showed initial increase followed by a fall in their level indicating that the tissues may not be mobilising glycogen to withstand the toxicant stress. Accordingly, related enzymes, like lactate dehydrogenase, pyruvate dehydrogenase and succinate dehydrogenase were found to be lowered. The glycogen metabolism was lowered more in liver tissue than in gill tissue.