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Esben M. Olsen, Dimitar Serbezov and Leif A. Vøllestad Probabilistic maturation reaction norms assessed from mark–recaptures of wild fish in their natural habitat Ecology and Evolution 4

Version of Record online: 1 APR 2014 | DOI: 10.1002/ece3.1044

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Probabilistic maturation reaction norms, describing probabilities of maturing at combinations of age and body size, have been much applied for separating phenotypic plasticity from evolutionary changes in maturation. However, due to typical field data limitations, this method still needs to be assessed. Using 13 years of direct mark–recapture observations on individual growth and maturation in a population of brown trout (Salmo trutta), we show that the probabilistic maturation reaction norm approach may perform well even if a key assumption of equal survival of juvenile and maturing fish may not hold.

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