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Cage Nursery Rearing of Shrimp and Prawn Fry in Bangladesh - BOBP/WP/92

Year of publication 1994

Pages p.16

Author C. L. Angell;Fishery and Aquaculture Economics and Policy Division

Product type Project

Edition 1

Synopsis (short abstract) The shrimp culture industry of Bangladesh depends on catches of the wild fry of tiger shrimp. Employment as fry-catchers has been generated for thousands of rural poor. But the marketing system is not well developed and high fry mortality occurs due to poor handling. The growing freshwater prawn farming sector, however, continues to demand increasing quantities of large juveniles. This report, based on field trials from 1990 to 1993, describes the results of cage nurseryculture trials with b oth tiger shrmip (Penaeus monodon) and giant freshwater prawn (Macrobrachium rosenbergii) fry. It was thought that fry-catchers would be able to increase their earnings through sales of nursed post-larvae and juveniles. The survival of nursed post-larvae in the distribution system would also be increased. However, it is unlikely that tiger shrimp fry nursing can be made profitable. On the other hand, cage culture of a combination of hatchery-reared post-larvae and wild-caught fry of the freshwat er prawn would be profitable. An NGO played an important role in the subproject by implementing technical trials and organizing and supporting participating fisherfolk groups.

Language English

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    The shrimp and prawn culture industries in India and Bangladesh still depend on wild fry. However, expanding production and the trend towards intensification, especially in India, will require the development of hatchery industries in these countries. Since the private sector is likely to be the engine for this development, BOBP undertook activities to transfer smallscale hatchery technology as directly as possible to this sector. In India, this took the form of training small-scale entrepr eneurs in tiger shrimp hatchery technology and providing financial support to the Government of West Bengal for the construction of a demonstration hatchery. Of eight trainees in India, one has set up a shrimp hatchery. The shrimp/prawn hatchery in West Bengal was completed, but not put into production. In Bangladesh, a small-scale demonstration freshwater prawn hatchery was set up in Chittagong District. A new hatchery technology, using brine and a simple recirculating biofilter, was found to be feasible. Both government and private sector participants were trained in the hatchery. Direct assistance in the form of training and equipment was given to four private groups. Three of them completed prawn hatchery construction by the end of 1993 and one of them went into production.
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    Thousands of people — men, women and children — in coastal areas of Bangladesh, make a living collecting shrimp fry: some 40,000 in Cox’s Bazaar, nearly three times as many in Satkhira and Khulna. Despite the role of these people in sustaining the shrimp industry which generates foreign exchange earnings, they remain poor and under-privileged. This paper is based on a socio-economic study of the shrimp fry collectors undertaken in 1987 by a voluntary agency, UBINIG (Policy Research for Develop ment Alternatives). The aim is to obtain information and discover strategies to improve the lot of the shrimp seed collectors. The study, and this paper which describes it, were sponsored by the BOBP’s project “Small-scale fisherfolk communities in the Bay of Bengal,” GCPIRAS/118/MUL. The project is funded by SIDA (Swedish International Development Authority) and DANIDA (Danish International Development Agency) and executed by the FAO (Food and Agriculture Organization of the United Nations). The project covers seven countries around the Bayof Bengal (Bangladesh, India, Indonesia, Malaysia, Maldives, Sri Lanka, Thailand). The main goals of the project, which commenced in 1987, are to develop, demonstrate and promote newiechnologies and methodologies to improve the conditions of small-scale fisherfolk communities in member-countries.
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