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Aquaculture and society in the new millennium
Type: Journal Article
Aquaculture as we know it at the beginning of the 21st century is a consolidation of more or less independent experiences. Carvings indicate that the Egyptians were cultivating fish at least 2,500 years ago. The Chinese ...
Genetic quality of cultured tilapia stocks in Africa
Type: Journal Article
African aquaculture is poised for rapid expansion. However, one of the key constraints holding back growth of the sector is the poor quality of the fish stocks available for culture. The problems of declines in growth ...
Integrating fish into seasonally flooded rice fields: on-farm trials in Assam, India
Type: Journal Article
In the State of Assam, floodplains cover 2.6 million ha of area that is traditionally rice growing. The ecosystem in the rice-growing areas has undergone major changes as a result of various developmental activities and ...
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 ...
Technical efficiency of freshwater pond polyculture production in selected asian countries : estimation and implication
Type: Journal Article
The research documented in this article estimates the levels and determinants of farm-level technical efficiencies (TE) in freshwater pond polyculture systems in China, India, Thailand, and Vietnam. The levels of ...
Exploring the trophic structure in organically fertilized and feed-driven tilapia culture environments using multivariate analyses
Type: Journal Article
Reports of similar yields in manure and feed-driven tilapia culture environments raise questions on food utilization in these environments. The possibility that similar production rates are because of utilization of different ...
Growth and emigration of white shimp, Litopenaeus vannamei, in the Mar Muerto Lagoon, Southern Mexico
Type: Journal Article
Microcohorts of white shrimp, Litopenaeus vannamei, were sampled with a cast net at fortnightly intervals in the Mar Muerto Lagoon, Southern Mexico. Shrimp recruited to the lagoon throughout the sampling period (January ...
Field studies on prevention and biological control of the cyanobacterial blooms using Chlorella and Scenedesmus in the Nile tilapia farms
Type: Journal Article
This study aimed to investigate the use of green algae Chlorella elliposoidea (Gerneck) + Scenedesmus bijuga (Turpin) Lageh as prevention and biological control treatment of cyanobacterial blooms as field application.
Investment Appraisal of Genetic Improvement Programs in Nile tilapia (Oreochromis Niloticus)
Type: Journal Article
The 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 ...