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A Comparative Study on the Molluscan Diversity in the Selected Beaches of Kollam and Thiruvananthapuram districts of Kerala ,India

Aiswariya Sunil¹& Athira M²

¹Aiswariya Sunil Department of Zoology , Mar Thoma College for Women Perumbavoor, Ernakulam Kerala,

²Athira M  Department of Zoology , Mar Thoma College for Women Perumbavoor, Ernakulam Kerala,

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Abstract -  Biodiversity of bivalves and gastropods at Pozhikkara and Kappil beaches of kollam and thiruvananthapuram Districts of Kerala was assessed in this study. A total count of 1130 molluscs were collected in which 24 species belonging to 19 families of two classes ; Class gastropods and Class bivalves were observed. Study was carried from December-2022 to May 2023 by using Beachcombing method in sandy areas and scrapping of molluscs in the Rocky areas selected for the study . In family of Muricidae three species were found and in Babylonidae ,Turitellidae and Bursidae two species of each was observed ,remaining families were included with one species each were recorded from the study areas .Perna perna  and Donax scrotum were seen in large number during the study period. . Cymaticum perryi ,Natica marochinesis ,Faunus ater and Nipponaphera quasilla were least in number during study period

KeyWords:Pozhikkara,Kappil,Mollusc,Beachcombing,Bivalves,Gastropods