Availability of pearl producing marine bivalves in south-eastern coast of Bangladesh and culture potentialities

Abstract

Citation: Rahman MA, Parvej MR, Rashid MH and Hoq ME (2015) Availability of pearl producing marine bivalves in south-eastern coast of Bangladesh and culture potentialities. Journal of Fisheries 3(3): 293-296. DOI: dx.doi.org/10.17017/jfish.v3i3.2015.108 AbstractThe present study was conducted during September 2014 to July 2015 to identify the pearl bearing bivalves in south-eastern coast of Bangladesh and culture potentialities of marine oyster in captivity based on field investigation. A total of 7 pearl bearing bivalve species were identified in the coast with a salinity of 18-34 ppt, pH 8.1-8.3 and water depth ranged 0.2-2.0 meter in their habitat. From the collected bivalves, most abundant oyster species windowpane oyster, Placuna placenta (Linnaeus, 1758) was reared in fiber glass tanks with seawater for a period of 6 months. During rearing highest survival rate of 88% was observed in T 1 with sandy and gravel substratum and lowest survival rate of 78% was found in T 2 with muddy substratum. Average temperature and salinity were varied between 24 °C-25 °C and 21-26 ppt respectively. From the reared oyster, highest 54 nos. small pearls in the month of April and lowest 7 pearls in December from a single P. placenta were obtained. The study proved that pearls can be obtained from the marine oysters in captivity in Bangladesh, and this offers large scale culture potentialities in our coast.

Inventory of Bivalve in the Coastal Area of Desa Sungai Nibung West Kalimantan

“…Wilayah pesisir Desa Sungai Nibung memiliki potensi sumberdaya alam dengan tingkat keanekaragaman tinggi, seperti ekosistem mangrove, ikan, krustasea, gastropoda, termasuk bivalvia (BPSPL Pontianak, 2019). Bivalvia merupakan kelas terbesar kedua dari filum moluska, tersebar luas di wilayah tropis dan sub tropis (Coan dan Valentich-Scott, 2006;Gosling, 2015), dengan jumlah ±10.000 spesies di seluruh dunia (Rahman et al, 2015). Bivalvia dapat ditemukan di daerah pasang surut (Asadi et al, 2018;Ambeng et al, 2020), berasosiasi dengan terumbu karang (Ali et al, 2017), padang lamun (Syukur et al, 2021;Donaher et al, 2021;Basmalah et al, 2022), dan ekosistem mangrove (Sarong et al, 2019;Putri et al, 2021;Rinaldi et al, 2021).…”

Food and Feeding Habits of Wedge Clam (Donax cuneatus) Off Thoothukudi, Gulf of Mannar, India

“…Within the Phylum Mollusca, Bivalvia is the second-largest taxonomic class with about 10,000 existing species documented worldwide (Rahman et al 2015). The diversity of bivalves includes 101 families and 1,380 genera with 9,620 species (Huber, 2015).…”