Browsing Brage IMR by Author "Skilbrei, Ove"
Now showing items 1-20 of 52
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A comparison between three Atlantic salmon river stocks; using classical population genetics, differences in life history traits and performance in sea ranching
Skilbrei, Ove; Skaala, Øystein (ICES CM Documents;1997/P:13, Working paper, 1997)Characterisation of stocks is essential for fisheries and environmental management in order to conserve genetic diversity. However, classical populationgenetic methods frequently fail to document stock differences. In ... -
Adult recaptures of farmed Atlantic salmon post-smolts allowed to escape during summer
Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)The influence of time of escape on survival to adulthood was tested in farmed Atlantic salmon Salmo salar smolt and post-smolts. Escape events were simulated in a small fjord in western Norway during and after the natural ... -
Adult recaptures of farmed Atlantic salmon post-smolts allowed to escape during summer
Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)The influence of time of escape on survival to adulthood was tested in farmed Atlantic salmon Salmo salar smolt and post-smolts. Escape events were simulated in a small fjord in western Norway during and after the natural ... -
Akustisk overvaking av seien sin vandring i Ryfylkebassenget
Otterå, Håkon; Skilbrei, Ove (Rapport fra Havforskningen;Nr. 14 - 2012, Working paper, 2012-04) -
Coastal releases of Atlantic salmon, a new model for salmon ranching in Norway
Holm, Marianne; Jørstad, Knut Eirik; Skilbrei, Ove; Pedersen, Tom N.; Skaala, Øystein; Nortvedt, Ragnar (ICES CM Documents;1991/M:38, Working paper, 1991)The present project is launched within the frame of a 7 year government funded programme to establish an additional livelihood for the coastal regions. The aim of the study is, through controlled experiments, to find ... -
Distribution of escaped farmed salmon and rainbow trout in the sea and possible effects of salmon lice on wild stocks
Skilbrei, Ove (ICES CM Documents;2002/T:8, Working paper, 2002)The aims and first results of a recently started project are presented. The geographical and seasonal distribution of the catch and catch per unit effort of escaped farmed salmon and rainbow trout are studied in an area ... -
Dverghannar - eit aukande problem for oppdrettsnæringa
Skilbrei, Ove (Havforskningsnytt, Working paper, 1997) -
An effective method for the recapture of escaped farmed salmon
Chittenden, Cedar M.; Rikardsen, Audun H.; Skilbrei, Ove; Davidsen, Jan G.; Halttunen, Elina; Skarðhamar, Jofrid; McKinley, R. Scott (Journal article; Peer reviewed, 2011-04-04)The search for effective strategies to prevent and mitigate accidental releases of aquaculture fishes is on-going. To test a new recapture strategy and evaluate the individual dispersal behaviour of escaped farmed Atlantic ... -
Effects of pre-release acclimatization period on salmon return rates
Skilbrei, Ove; Holm, Marianne; Jakobsen, Per J. (ICES CM Documents;1995/M:13, Working paper, 1995)42.000 1+smolts of Atlantic salmon were size graded into two size groups and released during three weeks in spring 1993; one group of small and one of large smolts on each of the four release days. Approximately 25% of ... -
Effects of salmon lice infection on the behaviour of sea trout in the marine phase
Gjelland, Karl Øystein; Serra-Llinares, Rosa Maria; Hedger, Richard David; Arechavala-Lopez, Pablo; Nilsen, Rune; Finstad, Bengt; Uglem, Ingebrigt; Skilbrei, Ove; Bjørn, Pål Arne (Journal article; Peer reviewed, 2014-07-09)Salmon lice Lepeophtheirus salmonis Krøyer may affect survival and growth of anadromous salmonids through physiological stress and/or behavioural changes. Using acoustic telemetry tracking, we investigated the behaviour ... -
Erfaringar med Resistance Board Weir-fangstsystemet i Etnevassdraget 2013–2014
Skaala, Øystein; Knutar, Sofie; Østebø, Britt Iren; Holmedal, Tor-Egil; Skilbrei, Ove; Madhun, Abdullah Sami; Barlaup, Bjørn; Urdal, Kurt (Rapport fra Havforskningen;6-2015, Working paper, 2015) -
Evaluation of emamectin benzoate and substance EX against salmon lice in sea-ranched Atlantic salmon smolts
Skilbrei, Ove; Espedal, Per Gunnar; Nilsen, Frank; Garcia, Enrique Perez; Glover, Kevin A. (Journal article; Peer reviewed, 2015-04-08)Experimental releases of Atlantic salmon smolts treated with emamectin benzoate (EB) against salmon lice have previously been used to estimate the significance of salmon lice on the survival of migrating smolts. In recent ... -
Evaluering av datagrunnlaget 2006–2009 for estimering av andel rømt oppdrettslaks i gytebestanden i norske elver : Forslag til forbedringer i utvalgsmetoder og prøvetakingsmetodikk
Skilbrei, Ove; Vølstad, Jon Helge; Bøthun, Gjermund; Svåsand, Terje (Rapport fra Havforskningen;Nr. 7-2011, Working paper, 2011) -
Evaluering av datagrunnlaget 2006–2009 for estimering av andel rømt oppdrettslaks i gytebestanden i norske elver : Forslag til forbedringer i utvalgsmetoder og prøvetakingsmetodikk
Skilbrei, Ove; Vølstad, Jon Helge; Bøthun, Gjermund; Svåsand, Terje (Rapport fra Havforskningen;Nr. 7-2011, Working paper, 2011) -
Evaluering av fettfinneklipping av all oppdrettslaks for lettere identifikasjon ved utfisking av rømt laks i lakseelvene
Kristiansen, Tore S.; Skilbrei, Ove; Skaala, Øystein (Rapport fra Havforskningen;Nr. 20 - 2012, Working paper, 2012-06) -
Feeding preference of recaptured Atlantic salmon Salmo salar following simulated escape from fish pens during autumn
Olsen, Rolf Erik; Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)Escapes of farmed fish from coastal farms around the world are believed to have genetic and ecological consequences for wild fish populations. Each year there are numerous escapes of adult farmed Atlantic salmon Salmo ... -
Feeding preference of recaptured Atlantic salmon Salmo salar following simulated escape from fish pens during autumn
Olsen, Rolf Erik; Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)Escapes of farmed fish from coastal farms around the world are believed to have genetic and ecological consequences for wild fish populations. Each year there are numerous escapes of adult farmed Atlantic salmon Salmo ... -
Felthåndbok for overvåking av rømt oppdrettslaks
Aronsen, T.; Bakke, G.; Barlaup, Bjørn; Fiske, P.; Florø-Larsen, B.; Glover, Kevin A.; Hindar, K.; Næsje, T.F.; Otterå, Håkon; Skaala, Øystein; Skilbrei, Ove; Skoglund, H.; Sægrov, H.; Urdal, K.; Wennevik, Vidar (Rapport fra Havforskningen;16-2016, Working paper, 2016-04) -
Forslag til førstegenerasjons målemetode for miljøeffekt (effektindikatorer) med hensyn til genetisk påvirkning fra oppdrettslaks til villaks, og påvirkning av lakselus fra oppdrett på viltlevende laksefiskbestander
Taranger, Geir Lasse; Svåsand, Terje; Bjørn, Pål Arne; Jansen, P.A.; Heuch, P. A.; Grøntvedt, Randi Nygaard; Asplin, Lars; Skilbrei, Ove; Glover, Kevin A.; Skaala, Øystein; Wennevik, Vidar; Boxaspen, Karin (Rapport fra Havforskningen;Nr. 13 - 2012, Working paper, 2012)Havforskningsinstituttet (HI) har sammen med Veterinærinstituttet (VI) utarbeidet forslag til førstegenerasjons målemetode for miljøeffekt (effektindikatorer) med hensyn til genetisk påvirkning fra oppdrettslaks til ... -
Genetic screening of farmed Atlantic salmon escapees demonstrates that triploid fish display reduced migration to freshwater
Glover, Kevin; Bos, J. B.; Urdal, Kurt; Madhun, Abdullah Sami; Sørvik, Anne Grete Eide; Unneland, Laila; Seliussen, Bjørghild Breistein; Skaala, Øystein; Skilbrei, Ove; Tang, Y.; Wennevik, Vidar (Journal article; Peer reviewed, 2016-02-09)Each year, hundreds of thousands of farmed Atlantic salmon escape from fish farms into the wild. Some of these escapees enter freshwater, and manage to interbreed with native populations. To hinder further genetic introgression ...