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Aquaculture

Optimisation of mesh enclosures for nursery rearing of juvenile sea cucumbers

Mariculture of tropical sea cucumbers is promising, but the nursery rearing of juveniles is a bottleneck for farming and sea ranching. We conducted four medium-scale experiments lasting 3–6 weeks, using thousands of cultured juvenile sandfish Holothuria scabra, to optimise nursery rearing in mesh enclosures in earthen seawater ponds and to test rearing in enclosures in the sea. The findings and experimental approach should be valuable for optimising mariculture of other tropical sea cucumbers.

Improving aquaculture feed in Bangladesh: From feed ingredients to farmer profit to safe consumption

Use of manufactured feeds in aquaculture in Bangladesh has grown rapidly over the last five years. More than 1 million tonnes of commercially formulated feeds and 0.3-0.4 million tonnes of farm-made feeds were produced in 2012, and sectoral growth is projected to increase substantially over the medium term.

Cage fish culture can bring changes for poor women

Throughout Bangladesh there are many and varied water bodies – such as rivers, irrigation canals, flood plains, beels (large depressions), oxbow lakes and ponds – that offer considerable potential for fish cultivation. But many farmers are unable to provide all the inputs required for intensive production methods, due to a general lack of capital, poor access to resources and insufficient knowledge.

Simple Technology Improves Hatchery Production Scenario

Situated in southwestern Bangladesh, Jessore district is an important source of fish seed in the country. Most of the private hatcheries are located here; they use underground water in their brood and nursery ponds and incubation jars.

Cage fish and small fish culture can bring changes for poor of Bangladesh

Throughout Bangladesh there are many and varied water bodies offering considerable potential for fish cultivation. But poor farmers are unable to provide all the inputs required for intensive production methods. 

Simple technology changed fish hatchery production scenario in Bangladesh

Most of the fish hatcheries of Bangladesh are situated at Jessore district. Oxygen concentration in the water of these hatcheries is very low and carbon dioxide level is higher than desired.

Algal bioproducts derived from suspended solids in intensive land-based aquaculture

Land-based aquaculture produces suspended solids in culture pond and settlement pond waters that could be harvested as a bioresource. The first aim of this study is to quantify, characterise, and subsequently harvest the suspended solids from two discharge waste streams in pond-based intensive aquaculture.

Inbreeding and effective population size in a coho salmon (Oncorhynchus kisutch) breeding nucleus in Chile

A commercial breeding nucleus of coho salmon (Oncorhynchus kisutch) was established in Chile in 1997. This nucleus consists of two independent populations corresponding to different year-classes (even and odd, depending on the spawning year), which have been successfully selected for harvest weight (approximate genetic gain per generation of 10%).

Optimizing benefits from the Egyptian farmed fish value chain

Egyptian aquaculture is booming, yet greater fish quality and effective industry support are still needed. A value chain approach is helping research and development partners overcome barriers to sustainable growth.

Shahnaz is a role model for rural women in fish culture

Shahnaz Dewan, a former elected member of local government, lives in Adabari village in Tangail District, Bangladesh. While Shanaz was engaged in household activity and social work, her husband used traditional methods of raising Indian Major Carp in his pond and she had very little involvement in fish culture.
 

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