International Science Community Association International Research Journal of Biological Sciences 2278 - 3202 5 9 2016 09 10 Chronic Effect of Pesticides on Collagen Content of Freshwater Bivalve, Parreysia Corrugata 38 40 EN Subhadra Subhadarsini 1 P.G. Department of Botany, Utkal University, Vani vihar, Bhubaneswar, Odisha, India Sandeep Kumar Nayak 2 P.G. Department of Botany, Utkal University, Vani vihar, Bhubaneswar, Odisha, India Kunja Bihari Satapathy* 3 P.G. Department of Botany, Utkal University, Vani vihar, Bhubaneswar, Odisha, India M. Udayakumar 1 Department of Botany, Pachaiyappa’s College, Chennai – 600 030, Tamil Nadu, India T.* Sekar 2 Department of Botany, Pachaiyappa’s College, Chennai – 600 030, Tamil Nadu, India Analyn* Anzano Cabras* 1 College of Arts and Sciences, University of Mindanao, Davao City, Philippines Jürgen Wiesner 2 Dresdener Ring 11, D-38444 Wolfsburg, Germany Mohamed Ahmed Fadl 1 Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Beni-Suef, Egypt and Biology Department, Faculty of Science, Taif University, Taif, KSA Hira Mubeenand Shahid Raza 1 Faculty of Biological Sciences, Department of Biotechnology, University of South Asia, Lahore, Pakistan Pramod Phirke 1 Department of Zoology, Fergusson College, Pune–4, MS, India S.P.* Zambare 2 Department of Zoology, Dr. Babasaheb Ambedkar Marathwada University, Aurangabad, MS, India > Short Communication 2016 6 29 2016 09 10 Fresh water bivalves, Parreysia corrugata were exposed to Sublethal concentrations of quinalphos (0.108 ppm.) and thiodan (0.0708 ppm) for the duration of 15 and 30 days. Chronic exposure to pesticides altered the collagen content in various tissues of P. corrugata. It was found to be increased in gills, gonads and digestive glands of pesticide exposed P. corrugata. It was higher in gills followed by gonads and digestive glands. Probable causes of increase were discussed. Copyright@ International Science Community Association