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Predicting self-recruitment in marine populations: biophysical correlates and mechanisms
Type: Journal Article
Mounting evidence suggests that some populations of benthic marine organisms may be less demographically ‘open’ than previously thought. The degree to which a population receives recruits from local sources versus other ...
Heavy metals concentrations in water and fish of some Egyptian lakes and fish ponds
Type: Journal Article
Five heavy metals namely, cadmium, copper, iron, lead, and zinc were determined in water and fish samples obtained from three different lakes and fishponds in Egypt over nine months to assess pollution with those toxic ...
Effect of nitrogen fertilizer source on water quality and performance of two tilapia species
Type: Journal Article
The purpose of the present study was to compare the effect of urea and calcium nitrate (c. nitrate) as nitrogen fertilizer sources with mono superphosphate (msp) on water quality and the performance of two species of tilapia ...
Priority setting for research on aquatic resources: an application of modified economic surplus analysis to natural resource systems
Type: Journal Article
In contrast to research on farming systems, research on natural resource systems seldom applies rigorous priority setting techniques, mainly due to difficulties associated with estimating research impact ex ante for such ...
Investing in Africa: the WorldFish Center's African strategy in summary
Type: Journal Article
Across much of Africa, freshwater and coastal fisheries provide an important source of food and livelihood for many millions of people. In addition, the aquaculture potential of the continent has only recently begun to be ...
Stock evaluation and development of a breeding program for common carp (Cyprinus carpio) in Karnataka, India: progress of a research project
Type: Journal Article
Common carp (Cyprinus carpio) is the single most important species for aquaculture in the state of Karnataka, India, where it is generally grown in polyculture with Indian major carps. Precocious maturation and unwanted ...
SLODS: slow dissolving standards for water flow measurements
Type: Journal Article
In this study, we report the development of slow dissolving standard (SLODS™), designed to estimate water flow over a lunar period (30 days). To demonstrate the usefulness and validity of this technique, we describe ...
A preliminary study on the feasibility of using fenced brushparks for fish production in Lake Chilwa, Malawi
Type: Journal Article
A study to investigate the feasibility of using fenced brushparks for fish ranching in Lake Chilwa was conducted for five months at the Kachulu Harbor. In a water depth of 1.4 m enclosures constructed from bamboo sticks ...
Food and feeding habits of Synodontis nigrita from the Osun River, SW Nigeria
Type: Journal Article
An investigation was conducted into the food and feeding habits of Synodontis nigrita from the Osun River near Epe, Lagos, Nigeria. The food items in the stomach of the S. nigrita covered a wide spectrum, ranging from ...
Nile tilapia (Oreochromis niloticus) seed production in irrigated rice-fields in Northwest Bangladesh-an approach appropriate for poorer farmers?
Type: Journal Article
Participatory research was conducted with poorer farmers in two communities, Girai (G) and Bahagili (B) in NW Bangladesh to assess the production of Nile tilapia seed in irrigated spring rice-fields. All the selected ...