International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 6 5 2017 05 10 Seasonal variations in the bottom sedimental macro-nutrients and its impact on the bio-chemical profile of fresh water molluscan Pila globosa 10 14 EN Devnath Popy 1 Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh Uddin Md. Kamal 2 Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh Ahamed Forkan 3 Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh Hossain Md. Towhid 4 Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh Manchur Mohammed Abul 5 Department of Microbiology, Faculty of Biological Sciences, University of Chittagong, Chittagong 4331, Bangladesh Ranjani R. 1 Research Department of Zoology, Seethalakshmi Ramaswami College (Women), Thiruchirappalli - 620 002, India Maheswari A.S. 2 Research Department of Zoology, Seethalakshmi Ramaswami College (Women), Thiruchirappalli - 620 002, India > Research Paper 2017 3 17 2017 05 10 The study was carried out to determine the nutrient content of important molluscs. Pila globosa, the commonly available fresh water molluscan species was selected for the ananlysis, and to investigate the size and seasonal variation of Protein, Carbohydrate, and Lipid contents from Koothaippar wetlands, between August 2013 to January 2014, covering three Seasons, Pre – Monsoon (August and September), Monsoon (October – December) and Post Monsoon (January). Low amount of protein was recorded in premonsoon season (0.0933 mg) and maximum in Postmonsoon season (0.1363mg). Minimum amount of carbohydrate was recorded in premonsoon (0.0733mg) and maximum in Postmonsoon (0.0933mg). Minimum amount of lipid present in Monsoon and Postmonsoon season (0.08mg). Total quantity of protein in region I, and low values of protein present in monsoon (0.081mg) and high during Postmonsoon season (0.153mg). The low amount of carbohydrate was present in premonsoon season 0.0643mg and maximum in monsoon season (0.161mg) in region II. This paper highlights the preliminary investigation of the bottom sedimental macro nutrients and the influence of these sedimental characteristics on the nutritive profile of Pila golobosa in two regions of Koothaippar lake ecosystem. Copyright@ International Science Community Association