An analysis of growth capability in full sib families of salmon (Salmo salar L.)

摘要

The variation of recapture weights of released young of salmon has been analysed. The material consists of a set of hatchery-reared full sib families descending from and released in the river Indalsälven during the years 1959 to 1961. The fish analysed were recaptured in the Baltic Sea during the second and third winter after release. Part of the variation of recapture weights is explained by differences in size at release. The part that is not explained by different size at release might be explained by genetic variation. The genetic part of the variation seems, however, to be of secondary importance. The material will be further analysed.