Status of Indian major carps spawn in the Halda River along with marketing and economic condition of the Fishers and related collectors

Abstract

The spawn of Indian major carps makes the Halda River an irreplaceable heritage of Bangladesh. The study was conducted to observe present status of Indian major carp breeding and collection management procedures of carp spawn and fry from the Halda River along with marketing process and economic conditions of the fishers and spawn collector. Data were collected through direct interview. In marketing system of carp eggs, spawn and fry in the Halda River, a number of intermediaries were involved actively in the marketing system. Four different types of marketing systems were identified in Halda spawn and fry distribution fry seller to final consumer. Fertilized eggs and spawn were collected and hatched by the local fisher's and collectors using their indigenous method. Those egg collectors sold to the hatchery owners per kg spawn at the rate of 50,000-80,000 BdTk. Again hatchery owners sold each and every fry at the rate of 5.0-6.0 BDTk. to the local fish farmers. Yearly survey information on Halda River's egg, spawn and fry collection showed an ups and downs production rate during last 07 years. The production status in the

Present Status of Aquatic Resource and Its Catch of Mogra River in Bangladesh

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Rearing and Nursing of Thai Pangas, Pangasianodon Hypophthalmus (Sauvage, 1978) With Different Feeds

“…Success in fry nursing depends on a scientific knowledge of nutritional requirement and optimum environmental factors for the growth and survival of spawn and fry in the open aquatic ecosystem (Mollah, 1985). In order to meet up the increasing dietary demand nursery feed was supplied at 5 to 20% of the total biomass per day (Chakraborty et al, 2019). Growth, survival and production of fry and fingerlings in nursery ponds depend on stocking density, fertilizers and supplementary feeds.…”

“…Thus growth in terms of length, w e i g h t , w e i g h t g a i n a n d S G R o f P. hypophthalmus fry was significantly higher in T where sustainable nursery management and 1 rich ingredients were supplied compared to those of T and T treatments. The causes might 2 3 include competition for food, space and habitat of fry (Islam et al, 1999;Islam, 2002;Rahman and Rahman, 2003;Chakraborty et al, 2006 and2019). The FCR value of treatment T is significantly 1 lower than those of treatment T and T .…”

Existing Cropping Pattern and Adoption of New Farming Technology in the Plain Land Ecosystem of Phulpur Upazila of Mymensingh

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