A Method for Finding the Limits of Application of the von Bertalanffy Growth Model and Statistical Estimates of the Parameters
- 1 August 1977
- journal article
- research article
- Published by Canadian Science Publishing in Journal of the Fisheries Research Board of Canada
- Vol. 34 (8) , 1079-1084
- https://doi.org/10.1139/f77-164
Abstract
The following expression is derived expressing the instantaneous growth rate (G) in terms of length (l) the power of the weight–length relationship (b), and the Bertalanffy growth parameters (K and L∞): G = bK(L∞/l − 1). Since this is valid for a length (or age) range in which growth conforms to the Bertalanffy model, a plot of G vs. 1/l should be linear with the intercept on the G axis being −bK and on the 1/l axis being 1/L∞. Since the variables can be measured independently, deviations of points from the regression can be tested and the limits of validity of the model ascertained. In addition, confidence limits of K and L∞ can be estimated. Two examples compare results with those using previous methods. Key words: method, Bertalanffy, growth, statistical, estimates, parametersThis publication has 0 references indexed in Scilit: