Acta Ichthyologica et Piscatoria 17(2): 33-47, doi: 10.3750/AIP1987.17.2.03
Comparison of accuracy of binomial, von Bertalanffy equation, Gompertz equation and Ford-Walford model used for mathematic description of length growth in various fish species
expand article infoJ. Szypuła

Corresponding author: J. Szypuła

© J. Szypuła.
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Citation: Szypuła J (1987) Comparison of accuracy of binomial, von Bertalanffy equation, Gompertz equation and Ford-Walford model used for mathematic description of length growth in various fish species. Acta Ichthyologica et Piscatoria 17(2): 33-47. https://doi.org/10.3750/AIP1987.17.2.03
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Abstract
The paper presents results of studies comparing empirical lengths of 50 fish species with lengths calculated by means of 4 most common mathematic growth models (binomial, von Bertalanffy equation, Gompertz equation and Ford-Walford model). From 5 to 19 versions of each model were calculated for every species, both for the whole range of empirical data and for its initial or terminal part. A total of 1920 mathematic length growth models were calculated, and mean difference between empirical and calculated results was computed for each model. The binomial was found to yield the best results (smallest mean differences), the worst results being obtained with the Ford-Walford model.