In order to achieve sustainable fishing livelihoods in coastal communities, data on profitability of small-scale fisheries relative to fish species hauled and gear types used by fishermen is required as part of a broader fisheries management strategy. This study was undertaken with this in mind. Findings from this study suggest high rates of exploitation, in that stocks generally cannot provide for increased economic return in the face of increased investment.
Small fish are a common food and an integral part of the everyday carbohydraterich diets of many population groups in poor countries. These populations also suffer from undernutrition, including micronutrient deficiencies – the hidden hunger. Small fish species, as well as the little oil, vegetables and spices with which they are cooked enhance diet diversity. Small fish are a rich source of animal protein, essential fatty acids, vitamins and minerals.
An account is given of pelagic fisheries in African lakes and reservoirs. Species introductions are considered, describing also various biological characteristics of the pelagic species. Currently pelagic fisheries are best developed in Lakes Tanganyika, Kariba and Kinneret. Development projects and planning necessary are discussed briefly.
A discussion is presented on the role played by women in artisanal fisheries in Africa, considering in particular their role in post-harvest activities. Although there are great differences from one country to another, the contribution ofwomen to the sector cannot be overemphasized; from landing the fish, to processing and selling in the market, the women are often in charge. The importance of the realization of this role played by women in the planning of development projects is stressed.
The findings are presented of a literature survey conducted regarding research in echinoderm fisheries. Information was obtained from ASFA for the period 1971-88, the ICLARM library and professional staff collections. Details are given of publication types, areas of research and some recent papers and institutions involved in sea cucumberfisheries are cited.
Mangroves and seagrasses are of special interest to coastal fisheries worldwide because of the role they play in providing nursery areas for commonly harvested fish and invertebrates. Although the ecology of fish and invertebrates associated with mangroves and seagrasses in the tropical Pacific is not well understood compared with other parts of the world, the connectivity among mangroves, seagrasses, intertidal flats and coral reefs indicates that mangroves and seagrasses throughout the region provide a similar function to such habitats elsewhere.
In this chapter, the authors assess the vulnerability of aquaculture in the tropical Pacific to climate change. It begins by summarising recent and potential aquaculture production to set the scene for the sector, and then use the framework outlined in Chapter 1, based on exposure, sensitivity, potential impact and adaptive capacity, to evaluate the vulnerability of the main commodities for food security and livelihoods.
Value chain showing the steps of fish handling from inputs, production, processing and distribution, marketing to final consumption.
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.
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.