The Japanese restocking program

In scale of operations, variety of species produced, amount of financial backing, and degree of popular and official support, the Japanese fisheries restocking program (saibai gyogyo) is unique. From its birth in 1962 when the government established two hatcheries on the Seto Inland Sea, it has undergone continuous expansion. By 1982, some 37 coastal prefectures are scheduled to have sea farming centers operating. Seven national centers have been opened and five more are under construction. There are also 11 other semi-government or private hatcheries.

Effects of white spot disease and bio-security on shrimp farming in Bangladesh

Shrimp culture is of central importance in Bangladesh, shrimp being the cash component of many smallholder, polyculture fish farming systems. Shrimp also contributes substantial income through exports. However, production remains low compared with other countries for a number of reasons, including low availability of good quality post larvae (PL) seed stock, lack of credit facilities, and disease problems.

Demersal fish assemblages of the Southwest Coast of India

Demersal surveys from the southwest coast of India were analyzed to determine the general pattern of distribution of demersal species assemblages in the area. Seasonality is pronounced, indicating three major periods, pre-monsoon, monsoon and post-monsoon. Each of the periods is characterized by different oceanographic circulation patterns that mainly determine the pattern of distribution of species assemblages. Spatial analysis confirmed that the Wadge Bank has the highest potential for producing good quality fish.

Comparative study of the reproductive performance and White Spot Syndrome Virus (WSSV) status of black tiger shrimp (Penaeus monodon) collected from the Bay of Bengal

A comparative study to assess length, weight, fecundity, hatching rate and White Spot Syndrome Virus (WSSV) prevalence in black tiger shrimp (Penaeus monodon) brood collected from shallow and deep water zones of the Bay of Bengal was carried out in Cox’s Bazar, Bangladesh. Average size and reproductive performance of brood from the deep zone was significantly higher than in brood caught from the shallow zone. The incidence of WSSV infection in shallow zone brood was much higher than in deep zone brood. The association between depth zone and WSSV infection is independent of brood size.

Baseline survey final report: Aquaculture for income and nutrition project

The World Fish Center, in collaboration with the GOB and USAID, has been implementing the FtF Aquaculture Project since October 2011 with a view to meet the government and FtF goals to sustainably reduce poverty and hunger. The project is funded by the USAID FtF initiative and covers a 5-year intervention in aquaculture focused on 20 southern districts in of the country.

An assessment of chemical and biological product use in aquaculture in Bangladesh

The aim of this study is to describe current chemical use practices in the aquaculture sector of Bangladesh and to identify the factors that influence them. A survey on the use of chemical and biological products was performed between November 2011 and June 2012 using structured questionnaires performed to producers of nine farm groups including homestead ponds, carps, tilapias, koi fish, shrimps, shrimps and prawns, only prawns, rice and fish, and pangas.

The artisanal inshore shrimp fishery off the cross river estuary, Nigeria

The findings are presented of an investigation conducted to assess the current status of the artisanal shrimp fisheryof Cross River Estuary, Nigeria with respect to catch rates and species composition. Three shrimp species were found to occur regularly in samples taken: Nematopalaemon hastatus, Exhippolysmata hastatoides and Parapenaeopsis atlantica , the former being the dominant species.

Aquaculture innovation system analysis of transition to sustainable intensification in shrimp farming

The shrimp sector has been one of the fastest growing agri-food systems in the last decades, but its growth has entailed negative social and environmental impacts. Sustainable intensification will require innovation in multiple elements of the shrimp production system and its value chain. In this paper, the authors take the shrimp sector in the Mekong Delta in Vietnam as a case to analyze the constraints on transforming the sector toward sustainable intensification.

Wastewater treatment for land-based aquaculture: improvements and value-adding alternatives in model systems from Australia

Settlement ponds are used to remove particulate and dissolved nutrients in Australian land-based aquaculture wastewater. At best, marine and brackish water settlement ponds reduce total suspended solids by 60%, but their efficiency is inconsistent. Functional improvements to nutrient removal systems are essential to provide uniform and predictable treatment of flow-through aquaculture wastewater. Furthermore, environmental regulation of discharge from intensive systems in Australia is increasing, providing the impetus to upgrade rudimentary single-step settlement pond systems.

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