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Growth, mortality and recruitment of Nile perch Lates niloticus (L. Centropomidae) in the Nyanza Gulf of Lake Victoria: an evaluation update
Type: Journal Article
A reassessment of the estimates of growth, mortality and recruitment patterns of Nile Perch, Lates niloticus was made based on data from commercial landings collected during the Catch Assessment Survey Programme. Two sets ...
Atlas demographique des populations de poissons d'eau douce d'Afrique
Type: Report
Growth and catch curves plus recruitment and selection patterns of 57 stocks and 47 species of African freshwater fishes are presented. The atlas also includes mortality estimates, information on food and feeding habits, ...
The general von Bertalanffy growth function: possible use in the Beverton and Holt model
Type: Journal Article
Using the concept of generalized Von Bertalanffy growth formula developed by Pauly and Gasch? tz, we tried to integrate the basic equation of Beverton and Holt and to check on changes in the quantitative evaluation of ...
A trophic ecosystem model of Lake George, Uganda
Type: Book Chapter
A trophic model of Lake George, Uganda, Central Africa was constructed using published quantitative and qualitative information on the various biotic components of the lake and the ECOPATH II approach and software. It is ...
New functions for the analysis of two-phrase growth of juvenile and adult fishes, with application to Nile perch
Type: Journal Article
Two phases of growth can sometimes be distinguished in long-lived fish species. The first involves the growth of zooplankton-feeding juveniles and young adults. The second consists of accelerated growth of large, piscivorous ...
Indices of overall growth performance of 100 tilapia (Cichlidae) populations
Type: Conference Paper
Four indices for comparing the overall growth performance of fishes ( omega , P, Phi , and Phi ') proposed by various authors are assessed, based on growth parameter estimates in 100 populations of tilapia in 15 species of the ...
An ECOPATH II model of the Lake Chad system
Type: Book Chapter
The trophic ecosystem modelling software, ECOPATH II, was used to analyze the Lake Chad system, Africa, during its "normal" phase, the period between 1969 and 1972. Reasonable estimates of population-related parameters for ...
Strategic review of enhancements and culture-based fisheries
Type: Conference Paper
Enhancements are interventions in the life cycle of common-pool aquatic resources. Enhancement technologies include culture-based fisheries, habitat modifications, fertilization, feeding and elimination of predat ...
On improving the resolution of the recruitment patterns of fishes
Type: Journal Article
It 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 ...
A note on the inverse function of the von Bertalanffy growth function
Type: Journal Article
Parameter estimates of the von Bertalanffy growth function (VBGF) and its inverse function, based on length-at-age and age-at-length data for Tilapia rendalli (Cichlidae) and Salmo trutta (Salmonidae) were derived using a ...