| Seasonal variations play an important role in nutritional content (protein, glycogen and lipid) in mollusc. Environmental factors like temperature, salinity changes as change in seasons which affects on consumption and availability of molluscan food. Besides this, their various physiological processes are concerned respective to season like reproduction. Heavy rainfall is one of the responsible factor for nutritional content in mollusc. Variation in protein, glycogen and lipid with spawning in marine gastropod molluscs. Giese (1969) had emphasized that mollusc lack discrete nutrition storage depots such as the vertebrate liver, the subdermal and mental adipose tissue of mammals and lipid of lower invertebrate. Therefore nutrients storage occurs primarily through production of new cellular elements, seasonal shifts in protein, lipid and glycogen level are merely reflections of their relative rates of synthesis and degradation. |