CHANGES IN THE AMMONIA EXCREATION DUE TO ABLATION OF CEREBRAL GANGLIA AND INJECTION OF THEIR EXTRACTS IN FRESHWATER BIVALVE MOLLUSCS LAMELLIDENS CORRIANUS

In mollusca, interactions with the environment are handled by the nervous system (includingthe sense organs) and the muscular system (the muscles that making the foot and those that attachthe animal to its shell). Both systems, of course, have been of different forms in different group ofanimals. In these freshwater bivalve molluscs like Lamellidens corrianus ammonia excretion playHan important role in the physiology; just like exogenous factors i.e. temperature, P, salinity etc.endogenous factors are too important for maintaining the homeostasis. Both the groups of animalsi.e. cerebral ganglia ablated and cerebral ganglionic extract injected showed pronounced effect onammonia excretion. Experiments were carried out in summer, monsoon and winter seasons