Indian Journal of Geo Marine Sciences Vol. 47 (11), November 2018, pp. 2296-2304 Soft bottom mollusc assemblages (gastropoda-bivalvia) in marine shallow waters of the western turkey coast Mehmet Culha*, Ozlem Aksoy & Gozde Ekin Tatarhan Department of Hydrobiology, Faculty of Fisheries, Izmir Katip Celebi University, Balatcık, Cigli, Izmir/Turkey *[E.mail:
[email protected]] Received 27 April 2017; revised 24 July 2017 The most dominant family was found to be Rissoidae with 10 species. Of the 105 species obtained stations, the most dominant species was Bittium reticulatum (26%) with 2226 specimens, followed by Mytilus galloprovincialis (11%) with 1022 specimens and Rissoa membranacea (8%) with 713 specimens, respectively. Shannon-Weaver’s Diversity Index (H'), Pielou’s Evenness Index (J’), Soyer’s Frequency Index (F), Bray-Curtis Similarity Index and Pearson's Correlation Analysis were applied to the benthic mollusc fauna. Diversity index values (between 1.71 and 4.43) and evenness index values (between 0.38 and 0.82) were determined in the area. According to Bray Curtis similarity analysis there were 3 distinct species assemblages in the area. The number of individuals, diversity index value, gastropoda and bivalvia species were also positively correlated with temperature. [Keywords: Gastropods, Bivalves, Mollusca, communities, Candarlı bay, Aegean Sea] Introduction organisms in the water column. They are important The phylum Mollusca is one of the largest and most food sources, especially for demersal fish9. well-studied groups in the animal kingdom (about Because of its location, geomorphological structure 50,000 marine living species belonging to 8 classes)1. and hydrographical and ecological characteristics, the Among the classes, Gastropods and Bivalves are the Aegean Sea comprises an important part of the most interesting groups of molluscs.