Sustainable aquaculture: Recent submissions
Now showing items 1241-1260 of 2402
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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 ... -
Exemple de la contribution de l'analyse fsctorielle des correspondences pour suivre l'evolution de la structure d'une population piscicole
(1991)Type: Journal ArticleThis contribution demonstrates an application of correspondence analysis to length-frequency data of catfish (Ictalurus melas, lctaluridae) sampled by electrofishing in the Garonne River, near Toulouse, France. The available ... -
Time recovery for exploited fish populations based on surplus yield models
(1991)Type: Journal ArticleA new method to estimate the time recovery of exploited population based on M.B. Schaefer's theory is proposed. The parameters used as follows: current population size (alphaP sub( infinity )'), target population level ... -
Growth of Pomadasys kaakan (Haemulidae) off the coast of Pakistan
(1991)Type: Journal ArticleThe growth parameters of javelin grunter Pomadasys kaakan (=P. hasta, Haemulidae) were estimated from length-frequency samples collected from December 1988 to February 1989 along the Pakistan coast. They are L sub( infinity ... -
The biometrics of marine fishes from the Gulf of Aden
(1991)Type: Journal ArticleThe growth parameters (L sub( infinity ), K, t sub(0)), total mortality and length-weight relationships of 23 speciesof fishes studied during a UNESCO-sponsored study of the fish populations of the Gulf of Aden, in the mid-1980s, ... -
Photographic image analysis for morphometric studies of tilapia
(1991)Type: Journal ArticleBiologists have long employed morphometry as a tool in identification, grouping of populations and stock identification of fish. For tilapias, studies have been made on the variability of morphomeric characters in Egyptian ... -
Small fishes as a resource in rural Bangladesh
(1991)Type: Journal ArticleThe role of small fishes in the diet of the rural poor in Bangladesh is described. Basic statistics (maximum size reached, length-weight relationships and prices) are presented for 42 species, belonging to 10 families and ...
