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Now showing items 421-430 of 5617
Training resource book on a participatory method for modelling bioresource flows
Type: Brief
This guidebook helps researchers and extensionists learn an easy rapid appraisal technique that enables farmers to draw conceptual models of their farm systems. The drawings help researchers and extensionists to understand ...
Evolution of shrimp aquaculture systems in the coastal zones of Bangladesh and Vietnam: a comparison
Type: Book Chapter
Based on on-farm surveys implemented in the Ganges Delta in Bangladesh and the Mekong Delta in Vietnam, the dynamics of shrimp aquaculture in salinity-influenced coastal areas were analysed. Qualitative data were collected ...
Optimal contribution selection in highly fecund species with overlapping generations
Type: Journal Article
Optimal contributions approaches to parental selection in closed breeding populations aim to maximize genetic gains, while restraining long-term inbreeding. The adoption of optimal contribution selection (OCS) in highly ...
Spawning and hatching performance of the silvery black porgy Sparidentex hasta under hypersaline conditions
Type: Journal Article
Abu Al Abyad island is characterized by harsh environmental conditions. A preliminary trial conducted at the island to investigate the spawning and hatching performance of the blue finned sea bream Sparidentex hasta indicated ...
Effect of dietary protein and feeding time on growth performance and feed utilization of post larval freshwater prawn Macrobrachium rosenbergii (de Man 1879)
Type: Journal Article
A growth trial was conducted to investigate the effect of different dietary protein and feeding times on growth performance and feed utilization of freshwater prawn Macrobrachium rosenbergii Post-Larvae (PL). The experiment ...
On-farm and on-station comparison of wild and domesticated Cameroonian populations of Oreochromis niloticus
Type: Journal Article
Wild (Sanaga River) and domesticated populations of Oreochromis niloticus were compared onfarm and on-station in the Central Province of Cameroon to determine the degree to which genetic deterioration of stocks may have ...
Can the age of the tropical species be determined by otolith measurement?: a study using Pristipomoides filamentosus (Pisces: Lutjanidae) from the Mahe Plateau, Seychelles
Type: Journal Article
The sagittal otoliths of bluespot jobfish (Pristipomoides flamentosus) from the Mahe Plateau, Seychelles, were examined for growth rings using light microscopy. Banding with putative annual and monthly frequency were ...
Increasing water productivity in agriculture
Type: Book Chapter
Water productivity is defined as the amount of agricultural output per unit of water depleted and can be applied to crops, trees livestock and fish. This chapter reviews challenges and opportunities to improve water ...
Dams and fisheries in the Mekong Basin
Type: Journal Article
This paper draws on approaches in ecology, biology and policy analysis to examine the tensions between dams and fisheries in the Lower Mekong Basin. We review the exceptional importance of Mekong fisheries in terms of total ...
History and status of the San Miguel Bay fisheries
Type: Book Chapter
This paper reviews the available data on San Miguel Bay fisheries and their history, and contrasts "small-scale" and "trawl" fisheries, each of which land about half of the Bay's total catch of 15000 t / year. On the basis ...