Browsing ICES CM documents authored by IMR scientists (1949-2011) by Author "Nævdal, Gunnar"
Now showing items 1-20 of 30
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A study of genetic variation in northeast Atlantic harp seals (Pagophilus groenlandicus)
Meisfjord, Jørgen; Fyllingen, Inger; Nævdal, Gunnar (ICES CM Documents;1991/N:5, Working paper, 1991)16 enzymes were examined for genetic studies of the harp seal population structure in the Northeast Atlantic. Muscle and liver samples were collected in the West Ice off Jan Mayen and in the Eastern Barents Sea in 1987, ... -
Causes of variation in carcass traits of Atlantic salmon (Salmo salar)
Torrissen, Ole; Hansen, Tom; Torrissen, Krisna Rungruangsak; Nævdal, Gunnar (ICES CM Documents;1984/F:25, Working paper, 1984)The aim of the present study was to reveal causes of variation in carcass traits of farmed Atlantic salmon (Salmo salar). During slaughtering of one year class Atlantic salmon, composed of half sib and full sib groups, ... -
Differentiation between "marinus" and "mentella" types of redfish by electrophoresis of hemoglobins
Nævdal, Gunnar (ICES CM Documents;1971/F:26, Working paper, 1971) -
Distribution of multiple forms of lactate dehydrogenase, aspartate aminotransferase and serum esterase in herring samples from Norwegian waters
Nævdal, Gunnar (ICES CM Documents;1969/16, Working paper, 1969) -
Electrophoretic studies of redfish (Genus sebastes) from Icelandic and Greenland waters
Nedreaas, Kjell Harald; Nævdal, Gunnar; Johansen, Torild (ICES CM Documents;1992/G:36, Working paper, 1992)Sebastes spp. from Icelandic and Greenland waters were analysed for biochemical genetic variation by agar gel and starch gel electrophoresis. The main emphasize was put on S. marinus, but the oceanic type S. mentella ... -
Enzyme polymorphism of sprat from Norwegian waters - preliminary results
Jørstad, Knut Eirik; Nævdal, Gunnar (ICES CM Documents;1981/H:65, Working paper, 1981) -
Esterase variation in herring studied by isoelectric focusing
Nævdal, Gunnar; Thorkildsen, Solveig; Lemvig, Svend (ICES CM Documents;1997/AA:1, Working paper, 1997)Few suitable genetic characteristics for studying herring population structure are available, and the main aim of the study reported here has been to reveal traits which display useful genetic variations for application ... -
Experiments with selective breeding of Atlantic salmon
Nævdal, Gunnar; Holm, Marianne; Møller, Dag (ICES CM Documents;1975/M:22, Working paper, 1975) -
Genetic studies on released and recaptured cod in a fjord system
Jørstad, Knut Eirik; Nævdal, Gunnar (ICES CM Documents;1992/G:65, Working paper, 1992)The study reported here is part of a more extensive investigation on the effects of mass rearing and release of 0-group cod in fjords and coastal areas in Norway. Each year since 1987 pond produced cod have been liberated ... -
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 ... -
Haemoglobins in sprat from Norwegian waters, studied by agar-gel electrophoresis
Nævdal, Gunnar (ICES CM Documents;1966/J:7, Working paper, 1966) -
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 ... -
Inter- and intraspecific variations in hemoglobins of some gadoid fishes
Møller, Dag; Nævdal, Gunnar (ICES CM Documents;1967/F:24, Working paper, 1967) -
Mutual impact of wild and cultured Atlantic salmon in Norway
Egidius, Emmy; Hansen, Lars Petter; Jonsson, Bror; Nævdal, Gunnar (ICES CM Documents;1988/Mini:5, Working paper, 1988)The development and current status of the fish farming industry, enhancernent and sea ranching of salmon in Norway are briefly described, and an account is given of the natural salmon river populations in different parts ... -
Population structure of Ammodytes marinus in the Northeast Atlantic
Nævdal, Gunnar; Lahn-Johannessen, John; Reinert, Jákup; Thorkildsen, Solveig (ICES CM Documents;1996/G:23, Working paper, 1996)Samples of the lesser sandeel species Ammodytes marinus Raitt were collected from Iceland, Denmark, Scotland, the Faeroe Islands and central and northern North Sea, and analysed for frequency distributions of genotypes ... -
A preliminary report on electrophoretic studies on herring serum proteins
Nævdal, Gunnar; Haraldsvik, Steinar (ICES CM Documents;1966/H:24, Working paper, 1966)Sera from more than 1 000 specimens of herring from the Norwegian Coast and the North Sea have been analyzed in combined starch-/agar-gel electrophoresis at pH 9.0. Great variations in the serum protein patterns were ... -
A preliminary report on studies of esterase phenotypes in herring
Nævdal, Gunnar; Danielssen, Didrik S. (ICES CM Documents;1967/H:24, Working paper, 1967) -
Research on quantitative genetics on salmonids in Norway.
Gjedrem, Trygve; Nævdal, Gunnar (ICES CM Documents;1979/F:22, Working paper, 1979)Studies on quantitative genetics in aquaculture are carried out by two institutions in Norway. The main purpose of these studies is to form the basis of a strategy fo:.t· genetic improvement of salrnonids for fish ... -
Serological studies on marine animals
Nævdal, Gunnar (ICES CM Documents;1969/15, Working paper, 1969)