INTRODUCING OF GASTROPODA AND PELECYPODA OF ZAYANDEHRUD RIVER

Zayandehrud is located in central of Iran. It is important habitats for living organisms and has a main role in diversity of flora and fauna too. Eight stations from Zayandehrud bridge up to Khajoh bridge were selected to determine Mulloscian assemblage. Malcological studies led to identification of I pelecypoda species (Corbicula fluminalis) and 4 Gastropoda species (Lymnae gaderosina, V. valvata piscnalis, Physa acuta and Physa sp.). All of Gasteropoda species belong to Hycanian province and only Pelecypoda belongs to North Africa and Western Asiafauna.