R. Balakrishna Naik and Arava Sai Krishna
Abstract
Permethrin, type I synthetic pyrethroid technical grade and 25% EC induced alterations of Glycogen quantity and Lactate dehydrogenase (LDH) enzyme activity in the fish Cyprinus carpio, in the laboratory after exposing to both in lethal and sublethal concentrations taking into considerations of 96h LC50 values of both the toxicants. The fish vital organs gill, liver, kidney, brain and muscle are presently studied. Due to exposure, the chief source of energy glycogen got sufficiently reduced, in the total quantity whereas the LDH enzyme activity got enhanced. To cope the stress decrease of energy due to glycolysis which got accelerated and concomitantly, lactic acid end product got accumulated as end product. Fish, an active swimmer, due to such change got fatigued, cannot be active, deprived of food and prone to easy prey. This impact of aerobic and anaerobic pathway is not good for a cultivable fish and the aimed one in the present experiment like same one and monitory of such toxicants is a must in all the aquaculture practices.