Abstract
When back-calculating fish length from scale measurements, the choice of the body-scale relationship is a fundamental step. Using data from the arctic charrSalvelinus alpinus (L.) of Lake Geneva (Switzerland) we show the need for a curvilinear model, on both statistical and biological grounds. From several 2-parameters models, the log-linear relationship appears to provide the best fit. A 3-parameters, Bertalanffy model did not improve the fit. We show moreover that using the proportional model would lead to important misinterpretations of the data.
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Rubin, J.F., Perrin, N. How does the body-scale model affect back-calculated growth: The example of arctic charr,Salvelinus alpinus (L.), of Lake Geneva (Switzerland). Aquatic Science 52, 287–295 (1990). https://doi.org/10.1007/BF00877285
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DOI: https://doi.org/10.1007/BF00877285