Search
Now showing items 1-10 of 17
A simple index of metabolic level in fishes
Type: Journal Article
Details are given of the use of an aspect ratio of the caudal fin of fish as an index of metabolic level. Studies have shown that this ratio, besides correlating with food consumption, also has close relationships with ...
Length-converted catch curves: a powerful tool for fisheries research in the Tropics (part 2)
Type: Journal Article
A method is described for the determination of the selection curve of fishing gear from the shape of the ascending arm of a length-converted catch curve and growth parameters.
An objective method for determining fish growth from length-frequency data
Type: Journal Article
A computing procedure was devised, to determine fish growth, that traces through a series of length frequencysamples sequentially arranged in time, a multitude of growth curves, and then selects the single curve which best ...
On the interrelationships between naturual mortality, growth parameters, and mean environmental temperature in 175 fish stocks
Type: Journal Article
A compilation of values for the exponential coefficient of natural mortality (M) is given for 175 different stocks of fish distributed in 84 species, both freshwater and marine, and ranging from polar to tropical waters.
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 ...
The relationships between gill surface area and growth performance in fish: a generalization of von Bertalanffy's theory of growth
Type: Journal Article
This paper is an attempt to interpret some of the data on fish growth available in the literature, emphasis is being given to a reassessment of von Bertalanffy's theory of growth as applied to fishes.
Growth performance in fishes: rigorous description of patterns as a basis for understanding causal mechanisms
Type: Journal Article
The 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, ...
Quantitative analysis of published data on the growth, metabolism, food consumption, and related features of the red-bellied piranha, Serrasalmus nattereri (Characidae)
Type: Journal Article
A tentative set of growth parameters of the von Bertalanffy growth equation were estimated for the red-bellied piranha, Serrasalmus nattereri, a common characid of the Amazonas and adjacent floodplains, based on length-frequency ...
Tabular data on marine fishes from Southern Africa. Part II: growth parameters
Type: Journal Article
This contribution presents von Bertalanffy growth parameter estimates for 28 species of marine fishes derived from growth curves in R. van der Elst's "Guide to the Common Sea Fishes of Southern Africa".
Length-converted catch curves: a powerful tool for fisheries research in the Tropics (part 1)
Type: Journal Article
A number of methods are available with the help of which total mortality (Z) can be estimated from length-frequency data. Thus it is possible to obtain reasonable estimates of Z from the mean length in a representative ...