Pharmaceutical Sciences
IAJPS 2018, 05 (01), 688-696 K. Balasundaram and R. Nagarajan ISSN 2349-7750 CODEN [USA]: IAJPBB ISSN: 2349-7750 INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES http://doi.org/10.5281/zenodo. Available online at: http://www.iajps.com Research Article MOLLUSCAN DIVERSITY IN DIFFERENT MICRO-HABITATS WITH REFERENCE TO AQUATIC VEGETATION IN LAKE VEERANAM TAMILNADU, SOUTHERN INDIA K. Balasundaram1, 2 and R. Nagarajan1,* 1 PG and Research Department of Zoology and Wildlife Biology, A.V.C. College (Autonomous), Mannampandal – 609 305, Mayiladuthurai, Southern India 2 Department of Microbiology, Shree Raghavendra Arts & Science College, Keezhamoongiladi-608 102, Chidambaram, Southern India. Abstract: We surveyed the molluscan species from January 2014 to March 2015 in lake Veeranam and the areas were divided into ‘Vegetation Free Area’ and ‘Area with Vegetation’ and in these two areas 12 different micro-habitats were identified. Totally 12 molluscan species were collected which were Villorita carbiculoides, Parreysia khadakvaslwensis, Lamellidens marginalis, Corbicula striatella, Polymesoda bengalensis, Indoplanorbis exustus, Bellamya bengalensis, Pila globosa, Stenothyra blanfordina, Thiara tuberculota, Lymnaea biacuminata and Cryptozona semirugata. They belong to five different orders viz., veneroida, trigoinoidea, basommitiophora, mesogastropoda and ariophantacea including nine families i.e. corbiculidae, unionoidae, bullininae, viviparidae, ampullariidae, stenothyridae, thiaridae, lymnaeidae and ariophantidae. Among the 12 molluscan species, the species Parreysia khadakvasiwensis and Lymnaea biacuminata were not observed in area with Pistia stratiotes (Pistia stratiotes micro-habitat) and the molluscan species Cryptozona semirugata was not observed in area with Cyperus sp. (Cyperus sp. micro-habitat). The molluscan species richness was maximum with 12 species in all the micro-habitats except ‘Cyperus sp. micro-habitat’ (11 species) and ‘Pistia stratiotes micro-habitat’ (10 species).
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