The Distribution Pattern of Mollusks Has Economic Value Concerning Substrate Characteristics in Lake Maninjau

Muhamad Suhaemi Syawal (Research Center for Limnology, The Indonesian Institute of Sciences- LIPI, Jl. Raya Bogor-Jakarta km 46, Bogor 16911)
Yusli Wardiatno (Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680)
Sigid Hariyadi (Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, Bogor Agricultural University, Kampus IPB Darmaga, Bogor 16680)

Jurnal Biologi Tropis
Vol. 20 No. 3 (2020): September - Desember

Lake Maninjau is one of the tectovulcanic type lakes in West Sumatra Province which is used as a food source in the presence of fauna groups such as mollusks. The main purpose of this study is to determine the distribution of mollusks concerning the substrate in Lake Maninjau. This research was conducted three times from March-September 2015 at seven points of the river estuary around Lake Maninjau. The result of the study shows that Corbicula moltkiana was mostly found at Pandan station, while Melanoides tuberculata and Anodonta woodiana were mostly found at Muko-Muko station. The distribution pattern of Corbicula moltkiana and Melanoides tuberculata shows a tendency to live in groups. The waters of the estuary around Lake Maninjau are dominated by sand with TN and TP concentrations ranged from 0.093 - 0.610 mg kg-1 and 0.427 - 2.137 mg kg-1, respectively.