How does the body-scale model affect back-calculated growth: the example of arctic charr Salvelinus alpinus (L.) of Lake Geneva (Switzerland)


Autoria(s): Rubin J. F.; Perrin N.
Data(s)

1990

Resumo

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.

Identificador

http://serval.unil.ch/?id=serval:BIB_644E75B57C33

isbn:1015-1621

doi:10.1007/BF00877285

isiid:A1990DV69600006

Idioma(s)

en

Fonte

Aquatic Sciences, vol. 52, no. 3, pp. 287-295

Palavras-Chave #Salvelinus alpinus; back-calculation; scales reading
Tipo

info:eu-repo/semantics/article

article