Giant freshwater prawn culture: Experiences from on-farm trials in the Philippines

This study explored the viability of giant freshwater prawn (Macrobrachium rosenbergii, locally known as ulang) culture in six regions in the Philippines. Twelve farmer-cooperators employed ulang monoculture and eight employed ulang-tilapia polyculture. In Region 8, all farmer-cooperators conducted both monoculture and polyculture systems. This paper is focused on comparing ulang monoculture and ulang-tilapia polyculture.

Genetic improvement of freshwater prawn, Macrobrachium rosenbergii (de Man) in India. Phase two

Macrobrachiurn rosenbergii is one of the widely cultured freshwater prawn species globally. India was the third largest producer of this species in 2007 and its aquaculture production rose to 43,000 metric tons (t) in 2005 froin less than 500 t in 1995. However, since then production has been declining and in 2008-09 it was 12,856 t, a reduction of more than 70% compared to 2005. There are several contributing factors to this decline, such as slow growth rate, poor survival, disease outbreaks, increase in cost of production, and availability of low risk alternative fish species.

Fisheries research using digital tablets in Myanmar

The present paper introduces a new method for data gathering using digital tablets in the field. The method is part of a fisheries study aimed at identifying migration patterns and breeding sites of key commercial fish species in Myanmar. The research is based on systematic and structured gathering of local knowledge along a 1,000 km long segment of the Ayeyarwady River, from the southern Delta to the northern Central Dry Zone. Digital tablets are used to convert local indigenous knowledge into data.

Evaluation of the use of fresh water by four Egyptian farms applying integrated aquaculture-agriculture: study report

This report describes a study done in 2010 by researchers of the WorldFish Center on water use in Egyptian farms that apply aquaculture – agriculture integration. Two of the four farms that were monitored derived the main income from farming and selling fish, the two other farms were mainly agricultural farms that used reservoirs that were built to store irrigation water for growing fish. The volume of water in which fish were raised from fingerling to market size and that was subsequently used to irrigate agriculture crops was estimated.

Effects of reservoirs on River Nile fisheries

The catch-effort relationship of the River Nile is Complicated by such factors as changes in water level and hydrology as well as spawning movements of the fish, which result in uneven distribution of the fish and fishing. The effects ofdam construction on the ecology of the fish fauna are considered, with particular reference to the effects of the Faraskour dam on the river fishery.

Economic analysis of climate change adaptation strategies in selected coastal areas in Indonesia, Philippines and Vietnam

Climate change with its attendant geophysical hazards is well studied. A great deal of attention has gone into analyzing climate change impacts as well as searching out possible mitigating adaptive strategies. These matters are very real concerns, especially for coastal communities. Such communities are often the most vulnerable to climate change, since their citizens frequently live in abject poverty and have limited capacity to adapt to geophysical hazards.

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