Richness of Molluscan Species from Fresh Water Reservoir of Yadgir District, Karnataka, India

The current study presents a list of Molluscan species found in Hattikuni Reservoir in the Yadgir District of Karnataka, as well as their richness. The research was carried out over a two-year period, from February 2014 to January 2016.  The collection of molluscan fauna was done in all the three seasons by repeated visit to the site.  From the reservoir, eleven molluscan species were collected and identified, nine of which are Gastropods and two of which are Bivalves. The two species belongs to Bivalves are Parreysia corrugate and Lamellidens corrianus were found in the reservoir, interestingly these two species of Bivalve and Lymnea luteola, L. acuminata, Melania (Palitia scabra) and M. scabra var elegans were the more dominant Gastropdes in the reservoir. The study revealed that higher higher dominance of Gastropoda than Bivalvia in the reservoir can be considered as bio-indicators of pollution and ecosystem health.