Effect of acute exposure of the organophosphate insecticide Rogor on some biochemical aspects of Clarias batrachus (Linnaeus)

Indian catfish (Clarias batrachus), a common fish of commercial importance, was exposed to a sublethal concentration (1/3 of 96 h LC50 value) of Rogor for periods ranging from 24 to 192 h. The changes in glycogen, lactate, la ctate dehydrogenase, and glycogen phosphorylase (a, ab) contents of muscle tissue were studied. A gradual decrease in muscle glycogen and an increase in lactate contents were observed. The activity level of lactate dehydrogen ase showed a sharp rise initially for 48 h followed by a decline after 96 a nd 192 h. The glycogen phosphorylase a and ab in muscle tissue enhanced in response to Rogor exposure. (C) 1999 Academic Press.