WorldFish Community: Recent submissions
Now showing items 3701-3720 of 5196
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Simulation of optimal harvesting strategies for small-scale mixed-sex tilapia (Oreochromis shiranus Boulenger 1896) ponds using a bio-economic model
(2007)Type: Journal ArticleA cohort-based bio-economic biomass growth and economic model, validated with data from experiments conducted in Malawi, was used to identify an optimal harvesting strategy for mixed-sex tilapia ponds.Three harvesting ... -
Effect of totally or partially replacing fish meal by alternative protein sources on growth of African catfish Clarias gariepinus (Burchell, 1822) reared in concrete tanks
(2007)Type: Journal ArticleA 12-week feeding trial was carried out in concrete tanks to examine complete and partial replacement (75%) of fish meal (FM) with poultry by-product meal (PBM), meat and bone meal (MBM) and soybean meal (SBM) in practical ... -
Can sexual dimorphism and body shape be altered in Nile tilapia (Oreochromis niloticus) by genetic means?
(2007)Type: Journal ArticleThe objective of this study was to estimate genetic parameters in GIFT (Genetically Improved Farmed Tilapia), especially focusing on the genetic correlation between trait expressions in both sexes and among measurements ... -
A preliminary market-based analysis of the Pohnpei, Micronesia, grouper (Serranidae: Epinephelinae) fishery reveals unsustainable fishing practices.
(2007)Type: Journal ArticleSerranids are important components of artisanal and commercial catch worldwide, but are highly susceptible to overfishing. In Pohnpei (Micronesia), a recent coral reef fish market survey revealed a reliance on night-time ... -
Phenotypic and genetic parameters for body measurements, reproductive traits and gut length of Nile tilapia (Oreochromis niloticus) selected for growth in low-input earthen ponds
(2007)Type: Journal ArticleIn this study we present estimates of phenotypic and genetic parameters for body size measurements, reproductive traits, and gut length for Nile tilapia (Oreochromis niloticus) selected for growth in fertilized earthen ... -
An empirical bio-economic stocking model for floodplain beels in Bangladesh.
(2007)Type: Journal ArticleWhile stocking floodplain depressions or beels with fingerlings is a common form of fisheries management in Bangladesh, bio-economic guidance for improving the outcome of stocking strategies is sparse. The Community-Based ... -
Africa's age of aquarium: farming ornamental fish in the rainforest of West Africa to improve livelihoods of the poor
(2007)Type: BriefThe ornamental fish trade has great scope for development. At present it is dominated by a small number of middle-men with little focus on sustainability or careful management of fish. This “Lessons Learned” document ... -
Investment Appraisal of Genetic Improvement Programs in Nile tilapia (Oreochromis Niloticus)
(2007)Type: Journal ArticleThe economic benefit derived from a genetic improvement program with Nile tilapia (Oreochromis niloticus) was examined from a national perspective. An industry structure was assumed whereby the genetic improvement program ... -
Grow-out of sandfish Holothuria scabra in ponds shows that co-culture with shrimp Litopenaeus stylirostris is not viable
(2007)Type: Journal ArticleWe examined the potential for producing the large numbers of sandfish (Holothuria scabra) needed for restocking programmes by co-culturing juveniles with the shrimp Litopenaeus stylirostris in earthen ponds. Our experiments ... -
Policy on the transfer of genetically improved Farm Tilapia (GIFT) from Asia to Africa by the WorldFish Center
(2007)Type: BriefThe Mission of The WorldFish Center is to ‘reduce poverty and hunger through improved fisheries and aquaculture’. We work to achieve this through relevant research, development and technology transfer, partnerships, capacity ... -
Priority technologies and national strategies to develop and manage fisheries and aquaculture
(2007)Type: BriefDrawn from the outstanding work that developed the AsiaFish model, this policy brief offers four key recommendations to Asian policy makers for expanding and managing their national fisheries and aquaculture sectors. -
Genetic improvement of farmed tilapias: composition and genetic parameters of a synthetic base population of Oreochromis niloticus for selective breeding
(2007)Type: Journal ArticleThe present study is based on data recorded from fish of the third generation of the GIFT project (Genetic Improvement of Farmed Tilapias). The objective of the study was to compose a synthetic base population of Nile ... -
Towards the maximum profitability of smallholder catfish nurseries: predator defense and feeding-adapted stocking of Clarias gariepinus
(2007)Type: Journal ArticleTo determine how best smallholders could maximize the profitability of their catfish hatcheries, the cost/benefit analyses of using fences, hapas and bird nets to exclude predators; as well as over-stocking to create food ... -
Fisheries and poverty reduction
(2007)Type: ReportThe purpose of this review is to review historic and contemporary research into fisher poverty. Our review commences by acknowledging the paucity of studies on the levels of (income) poverty within the sector and highlights ... -
Development strategies and options for fisheries and aquaculture in Asia
(2007)Type: BriefDeclining fisheries have hurt many poor coastal and inland fishing communities and consumers in Asia, where 630 million people live on less than US1 per day. Developed to restore dwindling fish supplies are the AsiaFish ... -
Snorkel the web: ReefBase brings a sea change in access to information about coral reefs
(2007)Type: BriefThis fact sheet highlights ReefBase, an award-winning online global information system designed to facilitate research on, and the management of, coral reefs to enhance their protection. Launched in 2002, ReefBase was ... -
GIS mapping of pond aquaculture potential in southern Malawi, Africa
(2007)Type: BriefSmallholding aquaculture in Malawi is gaining popularity, particularly with the promotion of pond-fish culture within integrated agriculture-aquaculture (IAA) systems. These systems benefit poor farm households through ... -
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GIS mapping of pond aquaculture potential in Bangladesh
(2007)Type: BriefIn Bangladesh inland pond aquaculture supplies 45% of freshwater fish, an important protein source for its increasing population. To maintain the desired productivity growth of the aquaculture sector will mean bringing ... -
GIS mapping of pond aquaculture potential in southern Cameroon, Africa
(2007)Type: BriefCurrently there is an unmet demand for freshwater aquaculture production in Cameroon to satisfy domestic fish needs and enhance food security. The aquaculture sub-sector remains under-developed despite its reported potential ...
