Diversity and taxonomy classification of mollusc (gastropod and bivalve) from the Setiu Wetlands, Terengganu

Abstract

A study on diversity and taxonomy classification of molluscs (gastropods and bivalves) from the Setiu Wetlands was conducted in Julai, September, November and December 2012. The study was done in order to determine the biodiversity of bivalve and gastropod communities at the Setiu Wetland as well as to classify those molluscs into their taxonomy group. Sampling was conducted from Northern to Southern areas of Setiu Wetlands. There were 3 stations at the Beting Lintang, 5 stations near the river mouth (Gong Batu) and 3 stations aJ the Penarik. The samples were collected using Ponar grab or manually. The samples were divided into two parts which are Gastropoda class and Bivalvia class. These samples were sieved and divided into its different sizes and shape for identification before preserved it in 10% formalin. Overall, there were 10 orders, 12 families, 16 genus and 30 species of gastropods while for bivalves there were 7 orders, 14 families, 17 genus and 20 species were found in the Setiu Wetlands. In July, 19 species of gastropods and 11 species of bivalves were found. 23 species of gastropods and 13 species of bivalves were found in the month of September. In November and January, 22 and 21 species of gastropods and 15 species of bivalves were found in the Setiu Wetlands. A study on diversity index, distribution and sediment analysis of mollusc (gastropod and bivalve) can be done for further research in which contribute to the new information about the species of bivalve and gastropod in Setiu Wetlands.