The commercial exploitation of giant clam Tridacnidae in the Philippines is examined. Generally the giant clam shell is of greater commercial value than the meat and muscle. Prices and expert figures are discussed briefly.
While an overwhelming majority of sub-Saharan African countries exhibit serious weaknesses in statistics pertaining to crop and livestock sectors, the deficiencies in terms of nationallyrepresentative data on the fishery sector are even more acute. The very little data available on the sector are essentially derived from case studies of selected fisheries, and the limited nationally representative data available are generally derived from a few questions included in the livestock section of household surveys.
In many coastal nations, community-based arrangements for marine resource management (CBRM) are promoted by government, advocated for by non-government actors, and are seen by both as one of the most promising options to achieve sustainable use and secure inshore fisheries and aquatic resources. Although there is an abundant literature on what makes CBRM effective, is it less clear how CBRM is introduced or develops as an idea in a community, and the process of how the idea leads to the adoption of a new resource management approach with supporting institutions.
A preliminary mass-balance trophic model was constructed for the coastal fisheries ecosystem of the West Coast of Peninsular Malaysia (0 - 120 m depth). The ecosystem was partitioned into 15 trophic groups, and biomasses for selected groups were obtained from research (trawl) surveys conducted in the area in 1987 and 1991. Trophic interactions of the groups are presented. The network analysis indicates that fishing fleets for demersal fishes and prawns have a major direct or indirect impact on most high-trophic level groups in the ecosystem.
The biomass of 40 ecological groups, the diet composition of prey and predators, production/biomass (P/B) and consumption/biomass (Q/B) ratios, and catches were used as basic input to parameterize an Ecopath model of the Gulf of Thailand. Following construction of a mass-balance ecosystem model, a time-dynamic simulation model (Ecosim) was used to simulate the impact of change in fishing effort. This was done using time series data to validate the historic fisheries development in the Gulf of Thailand prior to using the model for forward-looking simulations.
The CGIAR Research Program on Aquatic Agricultural Systems (AAS) is committed to improving the food security and wellbeing of poor people who depend on freshwater and coastal ecosystems for their livelihoods. AAS is particularly concerned with enhancing the equity of the social, economic and political structures that influence the livelihoods of poor households dependent on aquatic agricultural systems.
This articles examines the progress and the problems of the fishery resources management in China.
The concept of a disc-shaped two dimensional imaginary planet called Arde is conceived in which there is up and down, forward and backward but no left and right; and the first elements of a theory of fishing in a two dimensional world along with advice on the management of fisheries there, is described.
Sunamganj is a land dominated by floodplains with seasonally flooded tectonic depressions known locally as haors and smaller water bodies known as beels. People’s livelihoods and culture are largely dominated by the haor economy where beel fisheries play a very critical role. Although the beel has a wide range of resources, the people at large have not been able to benefit from them. A small number of people by virtue of their power and influence have been exploiting the resources overriding all the codes of resource management and maintenance.
This report presents information gathered during a short trip (November 14 to December 2, 1978) which the author made to observe the recent developments in inland fisheries research in India, Nepal, and Sri Lanka.