Blar i Articles på forfatter "Skilbrei, Ove"
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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 ... -
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 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 ... -
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 ... -
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 ... -
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 ... -
Impact of early salmon louse, Lepeophtheirus salmonis, infestation and differences in survival and marine growth of sea-ranched Atlantic salmon, Salmo salar L., smolts 1997-2009
Skilbrei, Ove; Finstad, Bengt; Urdal, K.; Bakke, Gunnar; Kroglund, F.; Strand, R. (Journal article; Peer reviewed, 2013-01-13)The impact of salmon lice on the survival of migrating Atlantic salmon smolts was studied by comparing the adult returns of sea-ranched smolts treated for sea lice using emamectin benzoate or substance EX with untreated ... -
Improved method for triacylglycerol-derived fatty acid profiling by various non-lethal and lethal sampling techniques in Atlantic salmon
Olsen, Rolf Erik; Taranger, Geir Lasse; Svåsand, Terje; Skilbrei, Ove (Journal article; Peer reviewed, 2013-11-14)The current paper compares the use of adipose fin and muscle biopsies as non-lethal sampling procedures, and the suitability of triacylglycerol (TAG) versus total lipid (TOT) fatty acid composition (fatty acid methyl esters, ... -
Migratory behaviour and ocean survival of escaped out-of-season smolts of farmed Atlantic salmon Salmo salar
Skilbrei, Ove (Journal article; Peer reviewed, 2013-04-10)A large proportion of farmed Atlantic salmon Salmo salar L. smolts are produced under intensive rearing conditions. They reach smolt size and are transferred to net pens in seawater during their first autumn under a short ... -
Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.)
Otterå, Håkon Magne; Skilbrei, Ove (Journal article; Peer reviewed, 2014-06-13)The culture of Atlantic salmon is one of the most developed aquaculture industries in the world. The production from smolt to market size usually takes place in sea cages in open waters, and these structures tend to attract ... -
Recapture of cultured salmon following a large-scale escape experiment
Skilbrei, Ove; Jørgensen, Terje (Journal article; Peer reviewed, 2010-10-19)A large-scale escape experiment using 1031 adult Atlantic salmon Salmo salar L. was performed in the Hardangerfjord in western Norway to study the dispersal of escaped salmon, evaluate the effect of a gill-net fishery ... -
Reduced migratory performance of farmed Atlantic salmon post-smolts from a simulated escape during autumn
Skilbrei, Ove (Journal article; Peer reviewed, 2010-11-10)Escape of migratory finfish species from fish farms, such as Atlantic salmon Salmo salar L., offer a challenge when considering the environmental risks of cage culture. The migratory behaviour of groups of cultured salmon ... -
Salmon lice – impact on wild salmonids and salmon aquaculture
Torrissen, Ole; Jones, S.; Asche, F.; Guttormsen, A.; Skilbrei, Ove; Nilsen, Frank; Horsberg, T. E.; Jackson, D. (Journal article; Peer reviewed, 2013-01-13)Salmon lice, Lepeophtheirus salmonis, are naturally occurring parasites of salmon in sea water. Intensive salmon farming provides better conditions for parasite growth and transmission compared with natural conditions, ... -
The importance of escaped farmed rainbow trout (Oncorhynchus mykiss) as a vector for the salmon louse (Lepeophtheirus salmonis) depends on the hydrological conditions in the fjord
Skilbrei, Ove (Journal article; Peer reviewed, 2012-02-24)The objectives of the study were to see if escaped rainbow trout (Oncorhynchus mykiss) spread rapidly or not from fish farms, and to test whether the hydrological conditions in a fjord influence their vertical distribution ... -
Use of fatty acid profiles to monitor the escapehistory of farmed Atlantic salmon
Skilbrei, Ove; Normann, Eirik; Meier, Sonnich; Olsen, Rolf Erik (Journal article; Peer reviewed, 2015-05-18)Farmed Atlantic salmon can escape from fish farms at various stages of their life, from juveniles to large mature fish. Escapees that enter rivers to spawn pose a threat to the genetic integrity of wild populations. Knowledge ...