To satisfy increasing demands for fish as food, progress must occur towards greater aquaculture productivity whilst retaining the wild and farmed genetic resources that underpin global fish production. We review the main selection methods that have been developed for genetic improvement in aquaculture, and discuss their virtues and shortcomings. Examples of the application of mass, cohort, within family, and combined between-family and within-family selection are given.
This study investigates the genetic structure and phylogeography of a broadcast spawning bivalve mollusc, Pinctada maxima, throughout the Indo-West Pacific and northern Australia. DNA sequence variation of the mitochondrial cytochrome oxidase subunit I (COI) gene was analysed in 367 individuals sampled from nine populations across the Indo-West Pacific.
Mangroves are an important resource for the rural coastal people of Solomon Islands. Mangrove forests are critical for food security and the livelihoods of coastal communities in Solomon Islands. In particular, mangroves are an important source of food (e.g. fish, mangrove fruit, shells and crabs) and timber (e.g. for firewood and building materials).
Small-scale fisheries present challenges to management due to fishers’ dependency on resources and the adaptability of management systems. The authors compared social-ecological processes in the sea cucumber fisheries of Zanzibar and Mayotte, Western Indian Ocean, to better understand the reasons for resource conservation or collapse.
Mangroves are an important resource for the rural coastal people of Solomon Islands. However, the area of mangroves is becoming less over time. Communities are now thinking about ways to help protect and keep mangroves healthy for future generations.
The sustainable management of small-scale fisheries in coral reef ecosystems constitutes a difficult objective not least because these fisheries usually face several worsening pressures, including demographic growth and climate change. The implications are crucial in terms of food security as fish represents the major protein source for local populations in many regions reliant on small-scale fisheries. The case of the Solomon Islands’ fishery presented in this paper represents an illustrative example of these issues.
There is a growing recognition that the fisheries policies of the past have been driven primarily by environmental and economic research agendas. This may have been due to the influence of the more powerful actors in the fisheries policy debate: foreign governments, conservation organizations, the scientific establishment, development bodies, and finance institutions. The actors without a voice at the table have been the millions of small-scale fishers, less educated, less organized, and with little economic or political weight.
The Mekong River is one of the great rivers of the world and is characterized by high fish biodiversity. A number of organizations are working at observing and protecting aquatic biodiversity in this hotspot of global importance. Among them are international organizations such as the WWF, Wetlands International, the International Union for Conservation of Nature (IUCN), and the United Nation Environment Program (UNEP) but also regional institutions and national line agencies or nongovernmental organizations (NGOs).
Fisheries is a vital sector in the Philippine economy, providing a significant source of both domestic and export earnings while meeting essential food security and nutritional requirements. However, marine resources in the Philippines are facing increasing pressure from overfishing, destructive fishing practices, habitat destruction, declining water quality and limited management capacity. Marine Protected Areas (MPAs) are part of the management strategy to address these issues but the majority of MPAs around the world do not meet their management objectives.
Cambodia's wetlands cover over 30 percent of the country’s land area and support one of the largest, most diverse and intensive freshwater fisheries in the world. In the flood season (July-February), the flood waters from the Mekong River and Tonle Sap Lake catchments create a vast open water system on Cambodia’s lowlands. During this period, inundated rice fields become open access fishing grounds for local villagers and migrant fishers.