摘要:The aim of this work was to investigate the size and seasonal variation of protein, carbohydrate, and lipid contents in freshwater bivalves Lamellidens spp. The bivalves were studied for a period of 12 months from January 2010 to December 2010 from river Tunga, in the Western Ghat region of Karnataka, India. The current study showed that bivalves accumulate proteins and lipids during the pre and post monsoon seasons. Drastic decrease in protein and lipid content was observed during the monsoon season while winter showed a mild decrease in the same. Inversely, carbohydrate content decreased during pre and post monsoon season, while increasing during the monsoon and winter seasons.