Although the precise origins of visioning are unclear, it is a widely used tool for defining stakeholder aspirations and a vision of the future in the context of a development intervention.
As in many tropical countries, subsistence fishers in Samoa live in discrete communities which have a high level of marine knowledge and some degree of control of adjacent waters. These factors provide an ideal basis for motivating communities to manage their marine resources. In Samoa, a community-based fisheries extension program encouraged each village community to define its key problems, discuss causes, propose solutions and take appropriate actions. Various village groups provided information which was recorded as problem/solution trees.
A computer program is presented which allows for fitting growth curves of the von Bertalanffy type to any set of weight- or length-at-age data. The data may be weighted by sample size, need not be spaced at regular intervals, and a forcing value for the asymptotic size may be used. The goodness of fit is estimated. An allometry in the length/weight relation ship can be accounted for in the case of weight growth, and seasonal growth oscillations can be accounted for in the case of length growth.
This paper examines the importance of accurately valuing the fisheries of large rivers (and in all ecosystems) and how such information can be used to maintain, improve and develop inland fisheries and ecosystem services, from both the exploitation and conservation perspectives, for future generations.
This report is an outcome of a collaborative effort between ICLARM and the University of Philippines - Visayas with funding support from Sida under the project "Valuation and policy analysis for sustainable management of coral reefs". The report summarizes various outputs provided by Taklong Island National Marine Reserve( TINMAR) that directly benefit the coastal communities and other resource users. The biological studies reviewed in the report also indicated that fish biomass has increased which can be attributed to the protection of the area as a marine reserve.
The effects of two common weedy grasses in sub-saharan Africa were evaluated as fertilisers in small-scale Nile tilapia ponds for 21 weeks.
Production and supply of fish seed-stock are essential for the promotion of aquaculture. Traditional inland aquaculture was based on the collection of seed-stock from rivers and required the sorting and acclimatising of mixed species. Fine meshed nylon net cages ‘hapas’ have been used for this purpose for Chinese carps in China and in Bangladesh and India for Indian major carp for a long time. Hapa nursing of small fry to larger, more predator-resistant fingerlings has been the focus for intensification of aquaculture in North East Thailand and Lao PDR.
This paper attempts to review the use of antibiotics in aquaculture in Malaysia because of the heightened concerns over its use and abuse and its impact on human health and the environment. Health and environmental issues relating to antibiotic use and measures that can reduce or control the impacts are also discussed.
Fisheries in the USA are managed under the Magnuson Fishery Conservation and Management Act of 1976 (MFCMA). By 1991, it was reported that fish stocks had declined considerably since the act came into force. A national Committee in Fisheries was set up in 1992 to investigate ways of improving fisheries management regimes. The committee's seven recommendations framed in four broad areas are: (1) prevent overfishing; (2) improve the institutional structure; (3) improve the quality of fishery science and data; and (4) move toward an ecosystem approach to fishery management.
Few studies of the riverine fish of the Athi-Galana-Sabaki river drainage area in Kenya have been carried out since the last comprehensive surveys of the 1950s and early 1960s. This paper presents updated information on scientific and recommended common names, distribution and ecology of selected fish species of this catchment. At least 28 riverine fish families consisting of 46 genera and 62 species occur in the drainage system, of which, 39 species are strictly freshwater (4 introduced) while 23 species are of marine origin.