Blar i Brage IMR på forfatter "Olsen, Rolf Erik"
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Næringsutslipp fra havbruk – nasjonale og regionale perspektiv
Torrissen, Ole; Hansen, Pia Kupka; Aure, Jan; Husa, Vivian; Andersen, Sissel; Strohmeier, Tore; Olsen, Rolf Erik (Rapport fra Havforskningen;21-2016, Working paper, 2016-06)English: This report gives an estimate of biological production based on dissolved nutrients and particulate organic matter from Norwegian aquaculture. It provides an estimate of the quantitative importance this has in ... -
Oil from transgenic Camelina sativa containing over 25 % n-3 long-chain PUFA as the major lipid source in feed for Atlantic salmon (Salmo salar)
Betancor, Mónica B.; Li, Keshuai; Bucerzan, Valentin S.; Sprague, Matthew; Sayanova, Olga; Usher, Sarah; Han, Lihua; Norambuena, Fernando; Torrissen, Ole; Napier, Johnathan A.; Tocher, Douglas R.; Olsen, Rolf Erik (Journal article; Peer reviewed, 2018)Facing a bottleneck in the growth of aquaculture, and a gap in the supply and demand of the highly beneficial n-3 long-chain PUFA (LC-PUFA), sustainable alternatives to traditional marine-based feeds are required. Therefore, ... -
Pathophysiological effect of chronic and acute stress in Atlantic salmon, Salmo salar (Actinopterygii: Salmoniformes: Salmonidae)
Kousha, Armin; Myklebust, Reidar; Olsen, Rolf Erik (Journal article; Peer reviewed, 2013-12-01)The knowledge on the effect of different stress factors on Atlantic salmon, Salmo salar Linnaeus, 1758, is far from complete and therefore we decided to find out how the low water level stress could effect pathophysiological ... -
Red and white chinook salmon (Oncorhynchus tshawytscha): Differences in the transcriptome profile of muscle, liver, and pylorus
Madaro, Angelico; Torrissen, Ole; Whatmore, Paul; Lall, Santosh P.; Schmeisser, Jerome; Verlhac Trichet, Viviane; Olsen, Rolf Erik (Peer reviewed; Journal article, 2020)Astaxanthin (Ax), the main carotenoid responsible for the distinct red flesh color in salmonids (Oncorhynchus, Salvelinus, Salmo, and Parahucho), is added to the diet of farmed fish at a substantial cost. Despite the great ... -
Risk Assessment of Catch and Release
Olsen, Rolf Erik; Næsje, Tor Fredrik; Poppe, Trygve; Sneddon, Lynne; Webb, John (Research report, 2010-03-17) -
Risk Assessment of Catch and Release
Olsen, Rolf Erik; Næsje, Tor Fredrik; Poppe, Trygve; Sneddon, Lynne; Webb, John (Research report, 2010-03-17) -
Skin mucus of gilthead sea bream (sparus aurata l.). protein mapping and regulation in chronically stressed fish
Pérez-Sánchez, Jaume; Terova, Genciana; Simó-Mirabet, Paula; Rimoldi, Simona; Folkedal, Ole; Calduch-Giner, Josep Alvar; Olsen, Rolf Erik; Sitjà-Bobadilla, Ariadna (Peer reviewed; Journal article, 2017) -
Stress and expression of cyclooxygenases (cox1, cox2a, cox2b) and intestinal eicosanoids, in Atlantic salmon, Salmo salar.
Olsen, Rolf Erik; Svardal, Asbjørn Martin; Eide, Torunn; Wargelius, Anna (Journal article; Peer reviewed, 2011-12-01)Prostaglandin H synthetases (cyclooxygenases) catalyze the initial reactions leading to prostanoids in animals. They form interesting links between diet and fish physiology as the type and nature of eicosanoids are affected ... -
Targeted mutagenesis of Δ5 and Δ6 fatty acyl desaturases induce dysregulation of lipid metabolism in Atlantic salmon (Salmo salar)
Jin, Yang; Datsomor, Alex Kojo; Olsen, Rolf Erik; Vik, Jon Olav; Torgersen, Jacob Seilø; Edvardsen, Rolf Brudvik; Wargelius, Anna; Winge, Per; Grammes, Fabian (Peer reviewed; Journal article, 2020) -
The β-oxidation pathway is downregulated during diapause termination in Calanus copepods
Skottene, Elise; Tarrant, Ann M.; Olsen, Anders Johny; Altin, Dag; Østensen, Mari-Ann; Hansen, Bjørn Henrik; Choquet, Marvin; Jenssen, Bjørn Munro; Olsen, Rolf Erik (Journal article; Peer reviewed, 2019)Calanus copepods are keystone species in marine ecosystems, mainly due to their high lipid content, which is a nutritious food source for e.g. juvenile fish. Accumulated lipids are catabolized to meet energy requirements ... -
Triploid Atlantic salmon × brown trout hybrids have similar seawater growth and welfare issues as triploid Atlantic salmon, but both were heavier at harvest than their diploid counterparts
Fraser, Thomas; Hansen, Tom Johnny; Remø, Sofie C.; Olsen, Rolf Erik; Fjelldal, Per Gunnar (Peer reviewed; Journal article, 2022)Interspecific hybridisation may improve the farm performance of sterile triploid salmonids via heterosis (i.e. hybrid vigour). We assessed growth over the final 293 days in seawater, and harvest quality, in diploid and ... -
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 ...