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Study of the diversity and spatial distribution of molluscs along salinity gradient in Ashtamudi Lake recorded the presence of 83 species with one polyplacophoran, 41 gastropods, 37 bivalves and four cephalopods. The species diversity in various salinity zones was in the order: saline zone-80 species > estuarine zone-28 species > freshwater zone-14...
Contexts in source publication
Context 1
... sampling sites were divided into three distinct salinity zones based on the salinity gradient, namely the freshwater zone (salinity of 5 ppt -14 ppt), estuarine zone (salinity, 15 ppt -24 ppt) and saline zone (salinity of 25 ppt -34 ppt). Koivila and Peringalam were taken as the freshwater zone, Ashtamudi and Tholukadavu as the estuarine zone and Dalavapuram and Neendakara Barmouth as the saline zone ( Figure 1). The salinity of the water at each site was estimated using handheld Refractometer and standard methods of APHA (2017). ...
Context 2
... like Assiminea woodmasoniana G. Nevill, 1880, Rugalucina vietnamica (Zorina, 1978 and Platevindex martensi (Plate, 1893) are recorded from the lake and are first observation records to the West Coast of India also ( 1821) were recorded from the saline zone. These species are exclusively mangrove-associated species and they were collected live from mangrove patches adjoining the Neendakara Barmouth region. ...
Context 3
... zone Estuarine zone Saline zone Diversity and spatial distribution of molluscs along the salinity gradient in Ashtamudi Lake Ramsar site, Kerala, India Leloup, 1937;b Clithon sowerbianum (Récluz, 1843); c Littoraria pallescens (Philippi, 1846); d Assiminea woodmasoniana G. Nevill, 1880; e Acteocina decorata (Pilsbry, 1904); f Platevindex martensi (Plate, 1893); g Rugalucina vietnamica (Zorina, 1978); h Alaona ala (Hanley, 1845); i Serratina siamensis (Martens, 1860) (Photographs by: Chinnu Vishwanathan). ...
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