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Articles by Bhakta Supratim Sarker
Total Records ( 2 ) for Bhakta Supratim Sarker
  Mohiful Kabir Saimon , M. Golam Mustafa , Bhakta Supratim Sarker , M. Belal Hossain and Md. Mofizur Rahman
  Halda River is the only tidal river in the world, has been reported to serve as a natural source of fertilized carp eggs. This study entails various marketing channels of carp fry of Halda River at different rearing stages and socio-economic conditions of the fry traders. Snowball sampling of data collection was followed through Focus Group Discussion (FGD), semi-structured questionnaire interview and cross-check interview with key informants. The results reveal that local egg collectors of Halda River collect carp eggs from May-July and hatch them by their indigenous hatching techniques. After 4-5 days of hatching, egg collectors start to sell the fry to fish farmers from different nooks of Bangladesh at the rate of BDT 40,000-60,000 kg–1. Halda fry has a complex market chain than other hatchery fry. The fry distributed in four different ways i.e., firstly from fry sellers to local fish consumers via local fish farmers and pond owners; secondly from fry sellers to nationwide fish farmers via hatchery owners and technicians; thirdly from fry sellers to renowned public fish hatchery in order to produce mother fish and finally from fry sellers to government Halda brood restoration project in order to enrich Halda River with more brood fish. This study also evaluated the socio-economic conditions of the traders. Most of traders (84%) were satisfied by involving themselves with Halda fry collection and marketing whereas rest of them (16%) was not satisfied due to their uncertain livelihood conditions in the off season.
  Rownok Jahan , Md. Abdul Quaiyum , Bhakta Supratim Sarker , M. Belal Hossain , K.M. Khalid Bin Jaman and S. Rahman
  Small (length <25 cm) indigenous fish species (SIS) play an important role in providing animal sources of protein in the poor rural houses of Bangladesh. They are also valuable sources of vitamin A, calcium and Iron. But since the green revolution started in Bangladesh their diversity has been decreased alarmingly. This investigation was carried out from December 2010 to November 2011 in the riversand beels of Karimganj Upazila, Bangladesh to assess the biodiversity status of SIS. The samples were collected from Balikholafish landing centre and thearea was visited at least once in a month. However, during the study period, only 30 species belonging to 7 orders and 15 families were identified where 19 species had normal abundance, 6 species moderate abundance and 5 species least abundance. The highest number (9) of species was recordedfrom the family Cyprinidae and Puntius sophore being the most dominant. Among the families, contribution of Cyprinidae was 30%, followed by Bagridae and Schilbeidae 10%, Channidae and Clupeidae 6.67% and rest of the each family was 3.33%. The species comprised 39% catfishes, 22% minnows, 17% barbs, 10% perch, 5% snakeheads, 2% gourami, and river shads, loaches, gar, glass fish, goby were 1% individually. The highest number of species (25) was found in October and the lowest (3) in February. The maximum yield of SIS was found in (Sep-Dec) period and the least availability of SIS found during (Jan-Apr). Among the fish species, 2 were considered as critically endangered (CR), 4 were endangered, 3 were vulnerable (VU) and 2 were Data Deficient (DD). From this repot, general people, researcher and policy makers would be able to know about the valuable SIS fishes of the study area, their present biodiversity status and their seasonal abundance. The information will be helpful for proper conservation and management of the SIS.
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