Blar i Brage IMR på forfatter "Lerøy, Rita"

Viser treff 1-13 av 13

    • Growth rate and age at sexual maturity of Atlantic salmon smoltifying aged one and two years 

      Nævdal, Gunnar; Bjerk, Øyvind; Holm, Marianne; Lerøy, Rita; Møller, Dag (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1979)
      Post-smolt growth rate and age at first maturation are compared for sib groups or population groups of salmon originating from Norwegian rivers and fish farms. Generally, high correlations were found between corresponding ...

    • Growth rate and age at sexual maturity of Atlantic salmon smoltifying at one and two years of age 

      Nævdal, Gunnar; Bjerk, Øyvind; Holm, Marianne; Lerøy, Rita; Møller, Dag (ICES CM Documents;1978/F:23, Working paper, 1978)
      Postsmolt growth rate and age at first maturation are compared for sibgroup or population groups of salmon originating from Norwegian rivers and fish farms. Generally high correlations were found between corresponding ...

    • Individual growth rate and age at first sexual maturity in Atlantic salmon 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita; Møller, Dag (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1978)
      Growth rates and possible connection between growth rate and age at maturation were studied on individually tagged salmon originating from different river populations. Great variations in growth rate and in age at first ...

    • Individual growth rate and age at first sexual maturity in atlantic salmon 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita; Møller, Dag (ICES CM Documents;1977/E:60, Working paper, 1977)

    • Individual growth rate and age at sexual maturity in rainbow trout 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita; Møller, Dag (ICES CM Documents;1978/F:22, Working paper, 1978)
      Growth rate and possible connection between growth rate and age at sexual maturity were studied on individually tagged rainbow trout from different sib groups. Great variation in growth rate and age at first sexual ...

    • Individual growth rate and age at sexual maturity in rainbow trout 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita; Møller, Dag (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1979)
      Growth rate possible connection between growth rate and age at sexual maturity were studied on individually tagged rainbow trout from different sib groups. Considerable variation in growth rate and age at first sexual ...

    • Sources of variation in weight and length of Atlantic salmon 

      Nævdal, Gunnar; Lerøy, Rita; Møller, Dag (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1983)
      Variances of weight and total length of four year classes of farmed Atlantic salmon after two years in the sea were distributed on strain, family, maturing/immature (after two winters) and sex. Higllly significant ...

    • Sources of variations in weight and length of Atlantic salmon 

      Nævdal, Gunnar; Lerøy, Rita; Møller, Dag (ICES CM Documents;1981/F:39, Working paper, 1981)
      Variance for weight and total length of four year classes of farmed Atlantic salmon after two years in the sea were distributed on strain, family, maturing/immature (after two winters) and sex. Highly significant variation ...

    • Studies on environmental conditions and influence on salmon farm production 

      Ervik, Arne; Jørstad, Knut Eirik; Farestveit, Eva; Wennevik, Vidar; Eriksen, Anne Grete; Lerøy, Rita (ICES CM Documents;1990/F:35, Working paper, 1990)
      The study was undertaken to investigate how environmental conditions influence growth of Atlantic salmon, and how different sub groups of salmon respond to different environment. The fish were raised at five different ...

    • Variasjoner i veksthastighet og alder ved kjønnsmodning hos regnbueaure 

      Møller, Dag; Holm, Marianne; Lerøy, Rita; Nævdal, Gunnar (Fisken og havet - Serie B, Working paper, 1976)

    • Variation in age at sexual maturity in rainbow trout 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita; Møller, Dag (ICES CM Documents;1975/M:23, Working paper, 1975)

    • Variation in growth rate and age at first maturation in rainbow trout 

      Nævdal, Gunnar; Lerøy, Rita; Møller, Dag (Fiskeridirektoratets skrifter, Serie Havundersøkelser, Research report, 1981)
      The present report is an account of the main results of a series of experiments on selective breeding of rainbow trout. The experiments started in 1972, but were discontinued in 1979 because IPN virus was detected in the ...

    • Vekstvariasjoner hos laks i oppdrett 

      Nævdal, Gunnar; Holm, Marianne; Lerøy, Rita (Fisken og havet - Serie B, Working paper, 1974)