WorldFish Community: Recent submissions
Now showing items 2321-2340 of 5196
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Simple aquaculture training for rural development in Zimbabwe
(1991)Type: Journal ArticleA summary is provided of a course introduced in 1987 at the Chaminuka Training Centre in Zimbabwe for training in rural aquaculture. The recruitment of trainees, aquaculture and rural development, the curriculum and practical ... -
Who's working on fishpond aeration
(1991)Type: Journal ArticleThe findings are provided of a literature search conducted on the topic of fishpond aeration, using ASFA for the period 1971-1990 and the ICLARM library and professional staff collection. A total of 97 articles were found. ... -
Constraints to aquaculture extension in rural Africa
(1991)Type: Journal ArticleAn examination is made of problems involved in the extension of aquaculture in traditional villages in Malawi.Aquaculture is relatively new in the country and requires technical support from very competent personnel who ... -
Population control in farmed tilapias
(1991)Type: Journal ArticleUnder the majority of culture practices, the reduction or elimination of reproduction in culture ponds results in significantly improved yields of marketable fish. An examination is made of existing methods for the control ... -
The predicament of the freshwater fisheries and aquaculture of Sri Lanka
(1991)Type: Journal ArticleA discussion is presented on the current problems facing the freshwater fisheries of Sri Lanka, following the decision taken by the Government to abolish the Inland Fisheries Division of the Fisheries Ministry and to stop ... -
The Genetic Improvement of Farmed Tilapias (GIFT) project: the story so far
(1991)Type: Journal ArticleThis issue of Naga features three articles about a project on the Genetic Improvement of Farmed Tilapias (GIFT) and a related article on the trend to genetic deterioration in some carp hatcheries. The first is on the genesis ... -
Biochemical and morphometric approaches to characterize farmed tilapias
(1991)Type: Journal ArticleBiochemical (electrophoresis and mitochondrial DNA) and morphological analysis are important tools for the characterization of strains. Reference is made to studies conducted in the framework of the Genetic Improvement of ... -
Approaches to national fish breeding programs: pointers from a tilapia pilot study
(1991)Type: Journal ArticleDetails are given of a framework for developing breeding programmes using experience from the Genetic Improvement of Farmed Tilapias project which focussed on Nile tilapias (Oreochromis niloticus ). The following aspects ... -
Simple broodstock management to control indirect selection and inbreeding: Indian carp example
(1991)Type: Journal ArticleFollowing a survey of the important traits of Indian carp broodstock at some southern Indian hatcheries, it was found that the broodstock selection was size selective, exerting strong, negative selection of prematuration ... -
Abstracts [of] the Third International Symposium on Tilapia in Aquaculture, 11-16 November 1991
(1991)Type: ReportISTA III is co-organized by ICLARM (International Center for Living Aquatic Resources Management), Manila, Philippines and CRO (Centre de Recherches Oceanographiques), Abidjan, Cote d'Ivoire. This volume contains the ... -
The context of small-scale integrated agriculture-aquaculture systems in Africa: a case study of Malawi
(1991)Type: Working PaperA study summarizing available literature on aquaculture and small-scale aquaculture in Malawi. It gives a national case study of one African context in which small-scale aquaculture has developed, and in which integrated ... -
Environmental impact of the golden snail (Pomacea sp.) on rice farming systems in the Philippines
(1991)Type: Conference ProceedingsA summary report of the workshop held at the Freshwater Aquaculture Center, Central Luzon State University, Nueva Ecija, Philippines, on 9-10 November 1989. It discusses the effects wrought by the golden snail since its ... -
Aquaculture research and development in rural Africa: summary report
(1991)Type: Conference ProceedingsA summary report on the ICLARM-GTZ/Malawi Fisheries Department/University of Malawi International Conference in Zomba, Malawi, on 2-6 April 1990. Contains abstracts of the papers, which attempt to identify the reasons why ... -
Growth performance in fishes: rigorous description of patterns as a basis for understanding causal mechanisms
(1991)Type: Journal ArticleThe origins and features of the growth performance index Phi ' are reviewed, emphasizing its ability to express the underlying common characteristics of a family of growth curves. Some other aspects of Phi ' are discussed, ... -
Estimation of yield per recruit when growth and fishing mortality oscillate seasonally
(1991)Type: Journal ArticleA general form of the yield equation is presented. This is used to investigate the effects of seasonal growth oscillations on estimation of yield per recruit. The results show that these effects will be strongest in ... -
On improving the resolution of the recruitment patterns of fishes
(1991)Type: Journal ArticleIt is proposed that the "recruitment pattern" routine of the ELEFAN II program can be modified to allow, in addition to length-frequency data, the use of "restructured" data files. An example, based on Oreochromis niloticus ... -
Population dynamics of Nemipterus japonicus from the northern Arabian Sea, Pakistan
(1991)Type: Journal ArticleCatch-per-effort and length-frequency data on threadfin bream Nemipterus japonicus (Nemipteridae) supplied by the staff of the R/V Dr. Fridtjof Nansen, covering the period September 1983 to June 1984, were analyzed using ... -
A program for constructing length-converted growth curves when growth is seasonal
(1991)Type: Journal ArticleFollowing Sparre's (1990) demonstration that length-converted catch curves overestimate total mortality when growth is seasonal, Pauly (1990) presented a method for constructing length-converted growth curves that allow ... -
Preliminary estimates of growth parameters for three commercial bivalve species of Peru (Gari solida, Anlacomya ater and Semele solida)
(1991)Type: Journal ArticleThe parameters of the von Bertalanffy growth equation were estimated, mainly from size-frequency data, for three commercially exploited Peruvian bivalves, Gari solida, Aulacomya ater and Semele solida, collected by divers ... -
On length-weight relationships. Part II: Computing mean weights from length statistics
(1991)Type: Journal ArticleAssuming a known length-weight relationship, the formula for calculating the mean weight from grouped length statistics is recapitulated. Then a simple analytical method for calculating mean weight from basic length ...
