Marine reserves are a promising tool for fisheries management and conservation of biodiversity, but they are not a panacea for fisheries management problems. For fisheries that target highly mobile single species with little or no by-catch or habitat impact, marine reserves provide few benefits compared to conventional fishery management tools. For fisheries that are multi-species or on more sedentary stocks, or for which broader ecological impacts of fishing are an issue, marine reserves have some potential advantages.
This paper documents the emergent snake ‘fishery’ occurring on Tonle Sap Lake where an estimated 6.9 million snakes (mostly homalopsids) are removed annually, representing the world’s largest exploitation of a single snake assemblage. Based on interviews with hunters, we found that snake catches declined by 74–84% between 2000 and 2005, raising strong concerns about the sustainability of this hunting operation.
The recognition of previous termrecreationalnext term and conservation benefits of coral reefs globally provides a sound economic rationale for their management. The value of previous termrecreationalnext term and conservation benefits of coral reefs along the Lingayen Gulf, Bolinao, Philippines is evaluated using travel cost and contingent valuation methods, respectively.
Procedures for impact assessment, including "beyond-BACI" (before-after control-impact) and proportional differences (ratios between impact and control treatments) were used to test population replenishment of marine invertebrates at a marine conservation area (MCA) and three fished (control) areas in the Solomon Islands of the southwestern tropical Pacific. Within shallow reef terrace habitat, the MCA caused abundance and size of the topshell Trochus niloticus to increase but did not affect holothurians (sea cucumbers) or the giant clam Tridacna maxima.
Aquaculture species are being domesticated and improved through genetic enhancement. Despite the benefits of improved fish in terms of increased production, there are risks associated with conservation of biodiversity when the introduced strains/species escape in natural waters. This is especially important in Africa which is one of the world’s repository of diverse freshwater fish fauna and home to native tilapias.
Genetic stock identification is increasingly needed for fisheries management. Genetic technologies are being developed to increase food production from aquaculture and to document and evaluate aquatic species, subspecies and strains for use in breeding programs. This volume of proceedings is a compilation of state-of-the-art reviews on aquatic genetic resource issues and summaries of discussions and recommendations from one of the few “think tanks” focused on aquatic genetic resources policy.
The Tram Chim Protected Area was recently recognized by the goverment as a national park for the conservation of typical wetland ecosystems in the Dong Thap Muoi area of the Mekong Delta. However, the protection of this national park has been a challenging task. Population in the area has rapidly increased in recent years, a result of the State policies encouraging land reclamation and natural resources exploitation in this area. Many of the local people are poor farmers whose livelihoods are based on rice cultivation and natural resource gathering.
Research by the WorldFish Center and its partners on tilapia began in the late 1970s and focused on key issues that affect their production and conservation. WorldFish Center library as part of its effort to serve the information needs of the Center staff, partners and other external users worldwide, has been acquiring documentation on the subject. Such documentation ranges from published/unpublished documents, theses, journal articles, to reports and conference papers.
As a part of 1996 World Conservation Congress (WCC), the IUCN - The World Conservation Union convened a Marine and Coastal Workshop on 17-18 October 1996 in Montreal Canada. This conference proceedings entitled "A roadmap for the future for fisheries and conservation" is the report on one of the four sessions comprised the workshop - the fisheries session. Seven papers were presented at this session.
The genetic relationships among northern South China Sea populations of the six bar wrasse (<i>Thallasoma hardwicki</i>) were investigated. Fish collected from the Solomon Islands were used for geographic comparison. In 1998 and 1999, a total of 100 fish were sampled from 6 localities of the northern South China Sea and 3 localities of the Solomon Islands. Genetic variations in DNA sequences were examined from the first hypervariable region (HVR-1) of the mitochondrial control region, as amplified by polymerase chain reaction.