Professor Sigurd O. Stefansson (December, 2017 ISI statistic 158, H-index 43) has long-term research experience in fish growth and development, reproduction and adaptation to the environment, both in salmonids and marine species, using a wide range of tools. Central in Stefansson’s research is the process of salmon smoltification, and his research includes both basic research and collaboration with the aquaculture industry. Research topics include the environmental, genetic and endocrine control of smoltification and basic mechanisms of adaptation to seawater.

Professional experience

Institute of Marine Research (IMR), Matre Aquaculture Station, Research fellow, Norwegian Fisheries Research Council 'Miljøforholdene i settefisk­produksjon', 07.1986 - 08.1988

Dept. of Fisheries Biology, UiB, Associate Professor (Amanuensis), 08.1988 - 06.1990

IMR, Matre Aquaculture Station, Senior Scientists, 01.07. - 31.12.1990

Dept. of Fisheries and Marine Biology, UiB, Associate professor 12.1990 – 03.2001

Department of Fisheries and Oceans, Biological Station, St. Andrews, Canada, post-doc. (Norwegian Fisheries Research Council), 05. - 12.1992

Dept. of Biology, UiB, Professor, 01.04.2001 – present

Univ. of Massachusetts at Amherst and Conte Anadromous Fish Research Center, Turners Falls, MA, USA, Sabbatical, 08.2003 – 07.2004

Completed Univ. of Bergen programme on teaching and pedagocics, 1994

Member of Dept. of Biology programme board for teaching (several appointments)

Chair of Education, Dept. of Biology, 2016

Chair of WP1 bioCEED, 2016

Head of the study programme “Havbruk og Sjømat” (Aquaculture and Seafood), 2016 – ongoing (integrated master/siv. ing.)

Courses

BIF 100 Innføring i fiskehelse og havbruk

Course responsible, teaching, assessment, quality assurance

BIF 101 Organismal Biology in Aquatic Medicine and Aquaculture

Course responsible, teaching, assessment, quality assurance

BIO 104 Comparative physiology

Course responsible, teaching, assessment, quality assurance

BIO 203 Introduction to Aquaculture

Teaching, assessment, quality assurance

BIO 291 Fish Biology II - Fish Physiology

Teaching, assessment, quality assurance

BIO 304 Specialisation in Aquaculture Biology

Teaching, assessment, quality assurance

Supervision

Cand. scient. and Master students:

43 students completed their degree, 3 currently under supervision

Dr. scient and PhD students:

12 students completed their degree, 3 students currently under supervision

Post-doc researchers:

3 finished

Academic article

• Pino Martinez, Enrique; Balseiro Vigo, Pablo; Stefansson, Sigurd Olav et al. (2023). Interaction of temperature and feed ration on male postsmolt maturation of Atlantic salmon (Salmo salar L.). (external link)
• Pino Martinez, Enrique; Balseiro, Pablo; Fleming, Mitchell S. et al. (2023). Interaction of temperature and photoperiod on male postsmolt maturation of Atlantic salmon (Salmo salar L.). (external link)
• Calabrese, Sara; Imsland, Albert K. D.; Nilsen, Tom Ole et al. (2023). Water Flow Requirements of Post-smolt Atlantic Salmon (Salmo salar L.) Reared in Intensive Seawater Flow-through Systems: A Physiological Perspective. (external link)
• Andersson, Eva; Denker, Elsa; Norberg, Birgitta et al. (2022). Lumpfish Cyclopterus lumpus reproduction: Pituitary gene expression, physiological and morphological changes accompanying gonadal maturation. (external link)
• Tang, Patrik Anthony; Stefansson, Sigurd Olav; Nilsen, Tom Ole et al. (2022). Exposure to cold temperatures differentially modulates neural plasticity and stress responses in post-smolt Atlantic salmon (Salmo salar). (external link)
• Øvrebø, Tarald Kleppa; Vigo, Pablo Balseiro; Imsland, Albert et al. (2022). Investigation of growth performance of post-smolt Atlantic salmon (Salmo salar L.) in semi closed containment system: A big-scale benchmark study. (external link)
• Tang, Patrik Anthony; Gharbi, Naouel; Nilsen, Tom Ole et al. (2022). Increased Thermal Challenges Differentially Modulate Neural Plasticity and Stress Responses in Post-Smolt Atlantic Salmon (Salmo salar). (external link)
• Remen, Mette; Nes, Armand Moe; Hangstad, Thor Arne et al. (2022). Temperature and size-dependency of lumpfish (Cyclopterus lumpus) oxygen requirement and tolerance. (external link)
• Svendsen, Eirik; Volent, Zsolt; Schellewald, Christian et al. (2021). Identification of spectral signature for in situ real-time monitoring of smoltification. (external link)
• Ytrestøyl, Trine; Takle, Harald Rune; Kolarevic, Jelena et al. (2020). Performance and welfare of Atlantic salmon, <i>Salmo salar</i> L. post-smolts in recirculating aquaculture systems: Importance of salinity and water velocity. (external link)
• Imsland, Albert; Hangstad, Thor Arne; Jonassen, Thor Magne et al. (2019). The use of photoperiods to provide year round spawning in lumpfish Cyclopterus lumpus. (external link)
• Imsland, Albert; Frogg, Nina Elise; Stefansson, Sigurd Olav et al. (2019). Improving sea lice grazing of lumpfish (Cyclopterus lumpus L.) by feeding live feeds prior to transfer to Atlantic salmon (Salmo salar L.) net-pens. (external link)
• Imsland, Albert; Roth, Bjørn; Døskeland, Inge et al. (2019). Flesh quality of Atlantic salmon smolts reared at different temperatures and photoperiods. (external link)
• Imsland, Albert; Jonassen, Thor Magne; Hangstad, Thor Arne et al. (2018). The effect of continuous light and compressed photoperiods on growth and maturation in lumpfish Cyclopterus lumpus. (external link)
• Moore, Lindsey; Jarungsriapisit, Jiraporn; Nilsen, Tom Ole et al. (2018). Atlantic salmon adapted to seawater for 9 weeks develop a robust immune response to salmonid alphavirus upon bath challenge. (external link)
• Nuñez-Ortiz, Noelia; Moore, Lindsey; Jarungsriapisit, Jiraporn et al. (2018). Atlantic salmon post-smolts adapted for a longer time to seawater develop an effective humoral and cellular immune response against Salmonid alphavirus. (external link)
• Sveen, Lene; Timmerhaus, Gerrit; Krasnov, Aleksei et al. (2018). High fish density delays wound healing in Atlantic salmon (Salmo salar). (external link)
• Moore, Lindsey; Nilsen, Tom Ole; Jarungsriapisit, Jiraporn et al. (2017). Triploid atlantic salmon (Salmo salar L.) postsmolts accumulate prevalence more slowly than diploid salmon following bath challenge with salmonid alphavirus subtype 3. (external link)
• Imsland, Albert; Roth, Bjørn; Fjelldal, Per Gunnar et al. (2017). The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens. (external link)
• Moore, Lindsey; Jarungsriapisit, Jiraporn; Nilsen, Tom Ole et al. (2017). Immune gene profiles in Atlantic salmon (salmo salar L.) post-smolts infected with SAV3 by bath-challenge show a delayed response and lower levels of gene transcription compared to injected fish. (external link)
• Calabrese, Sara; Nilsen, Tom Ole; Kolarevic, Jelena et al. (2017). Stocking density limits for post-smolt Atlantic salmon (Salmo salar L.) emphasis on production performance and welfare. (external link)
• Vikingstad, Erik J.M; Andersson, Eva; Hansen, Tom Johnny et al. (2016). Effects of temperature on the final stages of sexual maturation in Atlantic salmon (Salmo salar L.). (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Mæhle, Stig et al. (2016). Relationship between viral dose and outcome of infection in Atlantic salmon, Salmo salar L., post-smolts bath-challenged with salmonid alphavirus subtype 3. (external link)
• Imsland, Albert; Pettersen, Kristian; Stefansson, Sigurd Olav (2016). Growth and Smoltification of Three Norwegian Strains of Atlantic Salmon Salmo salar Reared under Different Thermal Regimes. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Taranger, Geir Lasse et al. (2016). Atlantic salmon (Salmo salar L.) post-smolts challenged two or nine weeks after seawater-transfer show differences in their susceptibility to salmonid alphavirus subtype 3 (SAV3). (external link)
• Døskeland, Inge; Imsland, Albert; Fjelldal, Per Gunnar et al. (2016). The effect of low temperatures and photoperiods on growth and vertebra morphometry in Atlantic salmon. (external link)
• Sveen, Lene; Timmerhaus, Gerrit; Torgersen, Jacob Seilø et al. (2016). Impact of fish density and specific water flow on skin properties in Atlantic salmon (Salmo salar L.) post-smolts. (external link)
• Angotzi, Anna Rita; Stefansson, Sigurd Olav; Nilsen, Tom Ole et al. (2016). Identification of a novel leptin receptor duplicate in Atlantic salmon: Expression analyses in different life stages and in response to feeding status. (external link)
• Salmerón, Cristina; Johansson, Marcus; Asaad, Maryam et al. (2015). Roles of leptin and ghrelin in adipogenesis and lipid metabolism of rainbow trout adipocytes in vitro. (external link)
• Handeland, Sigurd O; Imsland, Albert; Ebbesson, Lars O.E. et al. (2014). Osmoregulation and growth in offspring of wild Atlantic salmon at different temperatures. (external link)
• Imsland, Albert; Handeland, Sigurd O; Stefansson, Sigurd Olav (2014). Photoperiod and temperature effects on growth and maturation of pre- and post-smolt Atlantic salmon. (external link)
• Einarsdóttir, Ingibjörg Eir; Gong, Ningping; Jönsson, Elisabeth et al. (2014). Plasma growth hormone-binding protein levels in Atlantic salmon Salmo salar during smoltification and seawater transfer. (external link)
• Handeland, Sigurd O; Imsland, Albert; Nilsen, Tom Ole et al. (2014). Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures. (external link)
• Sundh, Henrik; Nilsen, Tom Ole; Lindström, Jenny et al. (2014). Development of intestinal ion-transporting mechanisms during smoltification and seawater acclimation in Atlantic salmon Salmo salar. (external link)
• Handeland, Sigurd O; Imsland, Albert; Björnsson, Björn Thrandur et al. (2013). Physiology during smoltification in Atlantic salmon: effect of melatonin implants. (external link)
• Handeland, Sigurd O; Imsland, Albert; Björnsson, Björn Thrandur et al. (2013). Long-term effects of photoperiod, temperature and their interaction on growth, gill Na+, K+-ATPase activity, seawater tolerance and plasma growth-hormone levels in Atlantic salmon Salmo salar. (external link)
• Nilsen, Tom Ole; Ebbesson, Lars O.E.; Handeland, Sigurd O et al. (2013). Atlantic salmon (Salmo salar L.) smolts require more than two weeks to recover from acidic water and aluminium exposure. (external link)
• Urke, Henning Andre; Kristensen, Torstein; Arnekleiv, Jo Vegar et al. (2013). Seawater tolerance and post-smolt migration of wild Atlantic salmon <i>Salmo salar</i> × brown trout <i>S. trutta</i> hybrid smolts. (external link)
• Handeland, Sigurd O; Imsland, Albert; Ebbesson, Lars O.E. et al. (2013). Low light intensity can reduce Atlantic salmon smolt quality. (external link)
• Angotzi, Anna Rita; Stefansson, Sigurd Olav; Nilsen, Tom Ole et al. (2013). Molecular cloning and genomic characterization of novel Leptin-like genes in salmonids provide new insight into the evolution of the Leptin gene family. (external link)
• Grassie, Cairsty; Braithwaite, Victoria Anne; Nilsson, Jonatan et al. (2013). Aluminum exposure impacts brain plasticity and behavior in Atlantic salmon (Salmo salar). (external link)
• Kroglund, Frode; Finstad, Bengt; Pettersen, Kristian et al. (2012). Recovery of Atlantic salmon smolts following aluminum exposure defined by changes in blood physiology and seawater tolerance. (external link)
• Koedijk, Roland; Imsland, Albert; Folkvord, Arild et al. (2012). Larval rearing environment influences the physiological adaptation in juvenile Atlantic cod, Gadus morhua. (external link)
• Sandbakken, Mari; Ebbesson, Lars O.E.; Stefansson, Sigurd Olav et al. (2012). Isolation and characterization of melanopsin photoreceptors of atlantic salmon (Salmo salar). (external link)
• Kling, Peter; Jönsson, Elisabeth; Nilsen, Tom Ole et al. (2012). The role of growth hormone in growth, lipid homeostasis, energy utilization and partitioning in rainbow trout: Interactions with leptin, ghrelin and insulin-like growth factor I. (external link)
• Stefansson, Sigurd Olav; Haugland, Monika; Björnsson, Björn Thrandur et al. (2012). Growth, osmoregulation and endocrine changes in wild Atlantic salmon smolts and post-smolts during marine migration. (external link)
• Finstad, Bengt; Kroglund, Frode; Bjørn, Pål Arne et al. (2012). Salmon lice-induced mortality of Atlantic salmon postsmolts experiencing episodic acidification and recovery in freshwater. (external link)
• Imsland, Albert; Våge, Klement Arild; Handeland, Sigurd O et al. (2011). Growth and osmoregulation in Atlantic salmon (Salmo salar ) smolts in response to different feeding frequencies and salinities. (external link)
• Gunnarsson, Snorri; Imsland, Albert; Árnason, Jón et al. (2011). Effect of rearing temperatures on the growth and maturation of Arctic charr (Salvelinus alpinus) during juvenile and on-growing periods. (external link)
• Ebbesson, Lars O.E.; Nilsen, Tom Ole; Helvik, Jon Vidar et al. (2011). Corticotropin-Releasing Factor Neurogenesis during Midlife Development in Salmon: Genetic, Environmental and Thyroid Hormone Regulation. (external link)
• Angotzi, Anna Rita; Mungpakdee, Sutada; Stefansson, Sigurd Olav et al. (2011). Involvement of Prop1 homeobox gene in the early development of fish pituitary gland. (external link)
• Murashita, Koji; Jordal, Ann-Elise Olderbakk; Nilsen, Tom Ole et al. (2011). Leptin reduces Atlantic salmon growth through the central pro-opiomelanocortin pathway. (external link)
• Björnsson, Björn Thrandur; Stefansson, Sigurd Olav; McCormick, Stephen D. (2011). Environmental endocrinology of salmon smoltification. (external link)
• Imsland, Albert; Koedijk, Roland; Stefansson, Sigurd Olav et al. (2011). A retrospective approach to fractionize variation in body mass of Atlantic cod Gadus morhua. (external link)
• Hosfeld, Camilla Diesen; Handeland, Sigurd O; Fivelstad, Sveinung et al. (2010). Physiological effects of normbaric environmental hyperoxia on Atlantic salmon (Salmo solar L.) presmolts. (external link)
• Koedijk, Roland; Folkvord, Arild; Foss, Atle et al. (2010). The influence of first-feeding diet on the Atlantic cod Gadus morhua phenotype: survival, development and long-term consequences for growth. (external link)
• Rønnestad, Ivar; Nilsen, Tom Ole; Murashita, Koji et al. (2010). Leptin and leptin receptor genes in Atlantic salmon: Cloning, phylogeny, tissue distribution and expression correlated to long-term feeding status. (external link)
• Koedijk, Roland; Le François, Nathalie R.; Blier, Pierre U. et al. (2010). Ontogenetic effects of diet during early development on growth performance, myosin mRNA expression and metabolic enzyme activity in Atlantic cod juveniles reared at different salinities. (external link)
• Nilsen, Tom Ole; Ebbesson, Lars O.E.; Kverneland, Ole Gabriel et al. (2010). Effects of acidic water and aluminum exposure on gill Na+, K+-ATPase alpha-subunit isoforms, enzyme activity, physiology and return rates in Atlantic salmon (Salmo salar L.). (external link)
• Murashita, Koji; Kurokawa, Tadahide; Ebbesson, Lars O.E. et al. (2009). Characterization, tissue distribution, and regulation of agouti-related protein (AgRP), cocaine- and amphetamine-regulated transcript (CART) and neuropeptide Y (NPY) in Atlantic salmon (Salmo salar). (external link)
• Foss, Atle; Imsland, Albert; Roth, Bjørn et al. (2009). Effects of chronic and periodic exposure to ammonia on growth and blood physiology in juvenile turbot (Scophthalmus maximus). (external link)
• Imsland, Albert; Roth, Bjørn; Foss, Atle et al. (2009). Long-term effect of photoperiod manipulation on growth, maturation and flesh quality in Atlantic halibut. (external link)
• Hvidsten, N. A.; Jensen, AJ; Rikardsen, Audun et al. (2009). Influence of sea temperature and initial marine feeding on survival of Atlantic salmon Salmo salar post-smolts from the Rivers Orkla and Hals, Norway. (external link)
• Imsland, Albert; Jenssen, Mads Dorenfeldt; Jonassen, Thor Magne et al. (2009). Best among unequals? Effect of size grading and different social environments on the growth performance of juvenile Atlantic halibut. (external link)
• Kling, Peter; Rønnestad, Ivar; Stefansson, Sigurd Olav et al. (2009). A homologous salmonid leptin radioimmunoassay indicates elevated plasma leptin levels during fasting of rainbow trout. (external link)
• Hosfeld, Camilla Diesen; Hammer, Janicke; Handeland, Sigurd O et al. (2009). Effects of fish density on growth and smoltification in intensive production of Atlantic salmon (Salmo salar L.). (external link)
• Stefansson, Sigurd Olav; Imsland, Albert; Handeland, Sigurd O (2009). Food-deprivation, compensatory growth and hydro-mineral balance in Atlantic salmon (Salmo salar) post-smolts in sea water. (external link)
• Foss, Atle; Imsland, Albert; Vikingstad, Erik J.M et al. (2009). Compensatory growth in Atlantic halibut: Effect of starvation and subsequent feeding on growth, maturation, feed utilization and flesh quality. (external link)
• Nilsen, Tom Ole; Ebbesson, Lars; Kiilerich, Pia et al. (2008). Endocrine systems in juvenile anadromous and landlocked Atlantic salmon (Salmo salar): Seasonal development and seawater acclimation. (external link)
• Vikingstad, Erik J.M; Andersson, Eva; Norberg, Birgitta et al. (2008). The combined effects of temperature and GnRHa treatment on the final stages of sexual maturation in Atlantic salmon (Salmo salar L.) females. (external link)
• Ebbesson, Lars O.E.; Björnsson, Björn Thrandur; Ekström, Peter et al. (2008). Daily endocrine profiles in parr and smolt Atlantic salmon. (external link)
• Moen, Anne-Grethe Gamst; Stefansson, Sigurd Olav; Jordal, Ann-Elise Olderbakk et al. (2008). Nutritional status of Atlantic salmon (Salmo salar) broodstock. Maternal effects on early expression of leptin, IGF-I, IGF-IR, and GHR. (external link)
• Handeland, Sigurd O; Imsland, Albert; Stefansson, Sigurd Olav (2008). The effect of temperature and fish size on growth, feed intake, food conversion efficiency and stomach evacuation rate of Atlantic salmon post-smolts. (external link)
• Remen, Mette; Imsland, Albert; Stefansson, Sigurd et al. (2008). Interactive effects of ammonia and oxygen on growth and physiological status of juvenile Atlantic cod (Gadus morhua). (external link)
• Hosfeld, Anne-Camilla Diesen; Engevik, Annhild ; Mollan, Ted Andreas et al. (2008). Long-term separate and combined effects of environmental hypercapnia and hyperoxia in Atlantic salmon (Salmo salar L.) smolts. (external link)
• Imsland, Albert; Foss, Atle; Roth, Bjørn et al. (2008). Plasma insulin-like growth factor-I concentrations and growth in juvenile halibut (Hippoglossus hippoglossus): Effects of photoperiods and feeding regimes. (external link)
• Kolding, Jeppe; Haug, Lise; Stefansson, Sigurd (2008). Effect of ambient oxygen on growth and reproduction in Nile tilapia (Oreochromis niloticus). (external link)
• Angotzi, Anna Rita; Ersland, Kari Merete; Mungpakdee, Sutada et al. (2008). Independent and dynamic reallocation of pitx gene expression during vertebrate evolution, with emphasis on fish pituitary development. (external link)
• Tipsmark, Christian K.; Kiilerich, Pia; Nilsen, Tom Ole et al. (2008). Branchial expression patterns of claudin isoforms in Atlantic salmon during seawater acclimation and smoltification. (external link)
• Finstad, Bengt; Kroglund, Frode; Strand, Rita et al. (2007). Salmon lice or suboptimal water quality - Reasons for reduced postsmolt survival?. (external link)
• Fivelstad, Sveinung; Waagbø, Rune; Stefansson, Sigurd et al. (2007). Impacts of elevated water carbon dioxide partial pressure at two temperatures on Atlantic salmon (Salmo salar L.) parr growth and haematology. (external link)
• Stefansson, Sigurd; Nilsen, Tom Ole; Ebbesson, Lars et al. (2007). Molecular mechanisms of continuous light inhibition of Atlantic salmon parr-smolt transformation. (external link)
• Kroglund, Frode; Finstad, Bengt; Stefansson, Sigurd et al. (2007). Exposure to moderate acid water and aluminum reduces Atlantic salmon post-smolt survival. (external link)
• Ebbesson, Lars; Ebbesson, Sven O.E.; Nilsen, Tom Ole et al. (2007). Exposure to continuous light disrupts retinal innervation of the preoptic nucleus during parr-smolt transformation in Atlantic salmon. (external link)
• Imsland, Albert; Björnsson, Björn Thrandur; Gunnarsson, Snorri et al. (2007). Temperature and salinity effects on plasma insulin-like growth factor-I concentrations and growth in juvenile turbot (Scophthalmus maximus). (external link)
• Stefansson, Sigurd; Nilsen, Tom Ole; Ebbesson, Lars et al. (2007). Molecular mechanisms of contiuous light inhibition of Atlantic salmon parr-smolt transformation. (external link)
• Imsland, Albert; Foss, Atle; Nævdal, Gunnar et al. (2007). New haemoglobin genotypes in Atlantic cod, Gadus morhua: Possible relation with growth. (external link)
• Imsland, Albert; Foss, Atle; Alvseike, Thomas et al. (2007). Interaction between temperature and photoperiod on growth and feeding of Atlantic cod (Gadus morhua): possible secondary effects. (external link)
• Fivelstad, Sveinung; Waagbø, Rune; Stefansson, Sigurd et al. (2007). Impacts of elevated water carbon dioxide partial pressure at two temperatures on Atlantic salmon (Salmo salar L.) parr growth and haematology. (external link)
• Nilsen, Tom Ole; Ebbesson, Lars; Madsen, Steffen S. et al. (2007). Differential expression of gill Na+,K+-ATPase alpha- and beta-subunits, Na+,K+,2Cl(-) cotransporter and CFTR anion channel in juvenile anadromous and landlocked Atlantic salmon Salmo salar. (external link)
• Imsland, Albert; Foss, A; Koedijk, Roland et al. (2007). Persistent growth effects of temperature and photoperiod in Atlantic cod Gadus morhua. (external link)
• Foss, Atle; Imsland, Albert; Roth, Bjørn et al. (2007). Interactive effects of oxygen saturation blood physiology and ammonia on growth and in juvenile turbot. (external link)
• Imsland, Albert; Foss, Atle; Stefansson, Sigurd et al. (2006). Growth, feed conversion efficiency and growth heterogeneity in Atlantic halibut (Hippoglossus hippoglossus) reared at three different photoperiods. (external link)
• Bakke-McKellep, A.M.; Refstie, Ståle; Stefansson, Sigurd et al. (2006). Effects of dietary soybeanmeal and photoperiod cycle on osmoregulation following seawater exposure in Atlantic salmon smolts. (external link)
• Imsland, Albert; Foss, A.; Folkvord, Arild et al. (2006). The interrelation between temperature regimes and fish size in juvenilie Atlantic cod (Gadus morhua). effects on growth and feed conversion efficiency. (external link)
• Imsland, Albert; Foss, Atle; Koedijk, Roland et al. (2006). Short- and long-term differences in growth, feed conversion efficiency and deformities in juvenile Atlantic cod (Gadus morhua) startfed on rotifers or zooplankton. (external link)
• Imsland, Albert; Wergeland, Trond; Jonassen, Thor Magne et al. (2006). Does malpigmentation improve growth in juvenile turbot (Scophthalmus maximus Rafinesque) and halibut (Hippoglossus hippoglossus L.)?. (external link)
• Heide, Andreas; Foss, Atle; Stefansson, Sigurd et al. (2006). Compensatory growth and fillet crude composition in juvenile Atlantic halibut: Effects of short term starvation periods and subsequent feeding. (external link)
• Imsland, Albert; Foss, Atle; Folkvord, Arild et al. (2005). The interrelation between temperature regimes and fish size in juvenile Atlantic cod (Gadus morhua): effects on growth and feed conversion efficiency. (external link)
• Imsland, Albert; Foss, Atle; Folkvord, Arild et al. (2005). Genotypic response to photoperiod treatment in Atlantic cod (Gadus morhua). (external link)
• Ebbesson, Lars; Tipsmark, Christian K.; Holmqvist, Bo et al. (2005). Nitric oxide synthase in the gill of Atlantic salmon: colocalization with and inhibition of Na+,K+-ATPase. (external link)
• Kulczykowska, Ewa; Solokowska, Ewa; Takvam, Børge et al. (2004). Influence of exogenous thyroxine on plasma melatonin in juvenile Atlantic salmon (Salmo salar). (external link)
• Dyrøy, Endre; Hvattum, Erlend; Thomassen, Magny Skinlo et al. (2004). Effects of 3-thia fatty acids on feed intake,growth, tissue fatty acid composition, beta-oxidation and Na,K-ATPase activity in Atlantic salmon. (external link)
• Fivelstad, S; Olsen, AB; Stefansson, Sigurd et al. (2004). Lack of long-term sublethal effects of reduced freshwater pH alone on Atlantic salmon (Salmo salar) smolts subsequently transferred to seawater. (external link)
• Taranger, GL; Vikingstad, Erik J.M; Klenke, U et al. (2004). Effects of photoperiod, temperature and GnRHa treatment on the reproductive physiology of Atlantic salmon (Salmo salar L.) broodstock. (external link)
• Imsland, Albert; Foss, Atle; Nævdal, Gunnar et al. (2004). Variations in growth in haemoglobin genotypes of Atlantic cod. (external link)
• Moya-Falcón, Corina; Hvattum, E; Dyrøy, Endre et al. (2004). Effects of 3-thia fatty acids on feed intake, growth, tissue fatty acid composition, beta-oxidation and Na+,K+-ATPase activity in Atlantic salmon. (external link)
• Graff, IE; Stefansson, Sigurd; Aksnes, Lage et al. (2004). Plasma levels of vitamin D-3 metabolites during parr-smolt transformation of Atlantic salmon Salmo salar L. (external link)
• Andersson, E; Kumar, SR; Ackers, J et al. (2004). Photoperiod and temperature affects seasonal ovarian gene expression of p450 aromatase and gonadotropin receptors in Atlantic Salmon (Salmo salar L.) broodstock. (external link)
• Handeland, Sigurd O; Wilkinson, E; Sveinsbo, B et al. (2004). Temperature influence on the development and loss of seawater tolerance in two fast-growing strains of Atlantic salmon. (external link)
• Handeland, S.O.; Björnsson, Björn Thrandur; Arnesen, Arne Mikal et al. (2003). Seawater adaptation and growth of post-smolt Atlantic salmon (Salmo salar) of wild and farmed strains. (external link)
• Arnesen, Arne Mikal; Toften, Hilde; Agustsson, Thorleifur et al. (2003). Osmoregulation, feed intake, growth and growth hormone levels in 0+ Atlantic salmon (Salmo salar L.) transferred to seawater at different stages of smolt development. (external link)
• Fivelstad, Sveinung; Waagbø, Rune; Zeitz, Solveig F et al. (2003). A major water quality problem in smolt farms: combined effects of carbon dioxide, reduced pH and aluminium on Atlantic Salmon (Salmo salar L) smolts: physiology and growth. (external link)
• Fivelstad, Sveinung; Olsen, Anne Berit; Åsgård, Torbjørn Einar et al. (2003). Long-term sublethal effects of carbon dioxide on Atlantic salmon smolts (Salmo salar L): ion regulation, haematology, element composition, nephrocalcinosis and growth parameters. (external link)
• Ebbesson, Lars O. E.; Ekström, Peter; Ebbesson, Sven et al. (2003). Neural circuits and their structural and chemical reorganization in the light-brain-pituitary axis during parr-smolt transformation in salmon. (external link)
• Ham, Erich H. van; BERNTSSEN, MARC; Imsland, Albert K. et al. (2003). The influence of temperature and ration on growth, feed conversion, body composition and nutrient retention of juvenile turbot (Scophthalmus maximus). (external link)
• Imsland, Albert Kjartansson; Dragsnes, Morten; Stefansson, Sigurd (2003). Exposure to continuous light inhibits maturation in turbot (Scophthalmus maximus). (external link)
• Nilsen, Tom Ole; Ebbesson, Lars O. E.; Stefansson, Sigurd (2003). Smolting in anadromous and landlocked strains of Atlantic salmon (Salmo salar). (external link)
• Imsland, Albert Kjartansson; Gunnarsson, Snorri; Foss, Atle et al. (2003). Gill Na+, K+-ATPase activity, plasma chloride and osmolality in juvenile turbot (Scophthalmus maximus) reared at different temperatures and salinities. (external link)
• Hoare, R.; Hovland, H.; Langston, A.L. et al. (2002). Susceptibility of three different strains of juvenile Atlantic halibut (Hippoglossus hippoglossus L.) cultured at two different temperatures to Vibrio anguillarum and temperature effect on antibody response. (external link)
• Imsland, A. K.; Jonassen, Thor M.; Langston, A.L. et al. (2002). The interrelation of growth and disease resistance of different populations of juvenile Atlantic halibut (Hippoglossus hippoglossus L.). (external link)
• Handeland, Sigurd O.; Stefansson, Sigurd (2002). Effects of salinity acclimation on pre-smolt growth, smolting and post-smolt performance in off-season Atlantic salmon smolts (Salmo salar L.). (external link)
• Imsland, A. K.; Foss, A.; Bonga, S. W. et al. (2002). Comparison of growth and RNA : DNA ratios in three populations of juvenile turbot reared at two salinities. (external link)
• Ebbesson, Lars O. E.; Björnsson, B.Th.; Ekström, P. et al. (2001). Daily profiles of plasma free thyroxine, total thyroxine, total triiodothyronine, and growth hormone in Atlantic salmon parr and smolts. (external link)
• Imsland, A.K.; Foss, A.; Sveinsbø, B. et al. (2001). Comparisons of RNA/DNA ratios, growth and metabolism of different populations of juvenile turbot Scophthalmus maximus reared at four temperatures. (external link)
• Imsland, A.K.; Foss, A.; Gunnarsson, S. et al. (2001). The interaction of temperature and salinity on growth and food conversion in juvenile turbot (Scophthalmus maximus). (external link)
• Porter, M.J.R.; Duncan, N.; Handeland, Sigurd O. et al. (2001). Temperature, light intensity and plasma melatonin levels in juvenile Atlantic salmon. (external link)
• Andreassen, P.M.R.; Martinussen, M.B.; Hvidsten, N.A. et al. (2001). Feeding and prey-selection of wild Atlantic salmon post-smolts. (external link)
• Andersson, Eva; Fjelldal, Per Gunnar; Klenke, Ulrike et al. (2001). Three forms of GnRH in the brain and pituitary of the turbot, Scophtalmus maximus: immunological characterization and seasonal variation. (external link)
• Imsland, A.K.; Foss, A.; Stefansson, Sigurd (2001). Variation in food intake, food conversion efficiency and growth of juvenile turbot from different geographic strains. (external link)
• Handeland, Sigurd O.; Stefansson, Sigurd (2001). Photoperiod control and influence of body size on off-season parr-smolt transformation and post-smolt growth. (external link)
• Imsland, Albert Kjartansson; Foss, Atle; Nævdal, Gunnar et al. (2001). Selection or adaptation: Differences in growth performance of juvenile turbot (Scophthalmus maximus Rafinesque) from two close-by localities off Norway. (external link)
• Imsland, Albert; Foss, Atle; Nævdal, Gunnar et al. (2001). Selection or adaptation: Differences in growth performance of juvenile turbot (Scophthalmus maximus Rafinesque) from two close-by localities off Norway. (external link)
• Porter, Mark; Stefansson, Sigurd Olav; Nyhammer, Gunnar et al. (2000). Environmental influences on melatonin secretion in Atlantic cod (Gadus morhua L.) and their relevance to commercial culture. (external link)
• Stefánsson, MÖ; Imsland, Albert Kjartansson; Jenssen, M.D. et al. (2000). The effect of different initial size distribution on the growth of Atlantic halibut (Hippoglossus hippoglossus L.). (external link)
• Simensen, L.; Jonassen, Thor M.; Imsland, Albert Kjartansson et al. (2000). Growth of juvenile halibut (Hippoglossus hippoglossus) under different photoperiods. (external link)
• Jonassen, Thor M.; Imsland, Albert Kjartansson; Kadowaki, S. et al. (2000). Interaction of temperature and photoperiod on growth of Atlantic halibut Hippoglossus hippoglossus L. (external link)
• Endal, H.P.; Taranger, GL; Stefansson, Sigurd et al. (2000). Effects of continuous additional light on growth and sexual maturity in Atlantic salmon, Salmo salar, reared in sea cages. (external link)
• Imsland, Albert K; Foss, A.; Stefansson, Sigurd et al. (2000). Hemoglobin genotypes of turbot (Schophthalmus maximus): consequences for growth and variations in optimal temperature for growth. (external link)
• Imsland, Albert Kjartansson; Foss, A.; Sveinsbø, B et al. (2000). RNA/DNA ratios, growth and metabolism of different populations of juvenile turbot Scophthalmus maximus reared at four temperatures. (external link)
• Imsland, Albert Kjartansson; Foss, A.; Nævdal, Gunnar et al. (2000). Countergradient variation in growth and growth efficiency of juvenile turbot. (external link)
• Jonassen, Thor M.; Imsland, Albert Kjartansson; Fitzgerald, R. et al. (2000). Geographic variation in growth and food conversion efficiency of juvenile Atlantic halibut related to latitude. (external link)
• Imsland, Albert Kjartansson; Foss, A.; Kadowaki, S. et al. (2000). Intraspecific differences in physiological efficiency of juvenile Atlantic halibut Hippoglossus hippoglossus L. (external link)
• Handeland, Sigurd O.; Berge, Åse Ingvild; Bjørnsson, Bjørn Th. et al. (2000). Seawater adaptation of Atlantic salmon (Salmo salar L.) at different temperatures. Aquaculture, 181: 377-396. (external link)
• Ebbesson, Lars O. E.; Björnsson, B Th; Stefansson, Sigurd et al. (2000). Free plasma thyroxine levels in coho salmon, Oncorhynchus kisutch, during parr-smolt transformation: comparison with total thyroxine, total triiodothyronine and growth hormone levels. (external link)
• Taranger, Geir Lasse; Haux, C.; Hansen, Tom Johnny et al. (1999). Mechanisms underlying photoperiodic effects on age at sexual maturity in Atlantic salmon, Salmo salar. (external link)
• Fivelstad, Sveinung; Olsen, Anne Berit; Kløften, Hilde et al. (1999). Effects of carbon dioxide on Atlantic salmon (Salmo salar L. ) smolts at constant pH in bicarbonate rich freshwater. (external link)
• Otterlei, Erling; Nyhammer, Gunnar; Folkvord, Arild et al. (1999). Temperature- and size-dependent growth of larval and early juvenile Atlantic cod (Gadus morhua): a comparative study of Norwegian coastal cod and northeast Arctic cod. (external link)
• Taranger, Geir Lasse; Haux, C.; Stefansson, Sigurd Olav et al. (1998). Abrupt changes in photoperiod affect age at maturity, timing of ovulation and plasma testosterone and oestradiol-17 profiles in Atlantic salmon, Salmo salar. (external link)
• Fivelstad, Sveinung; Olsen, Anne Berit; Zeitz, Solveig et al. (1998). Effekter av karbondioksyd på laksesmolt. (external link)
• Sunde, Leif M.; Imsland, Albert; Folkvord, Arild et al. (1998). Effects of size grading on growth and survival of juvenile turbot at two temperatures. (external link)
• Imsland, Albert; Folkvord, Arild; Jónsdóttir, Ólöf D.B. et al. (1997). Effects of exposure to extended photoperiods during the first winter on long-term growth and age at first maturity in turbot (Scophthalmus macimus). (external link)
• Hallaråker, H.; Folkvord, Arild; Stefansson, Sigurd (1995). Growth of juvenile halibut (Hippoglossus hippoglossus L.) related to temperature, day length and feeding regime. (external link)
• Berge, Åse Ingvill; Berg, Arne; Fyhn, Hans Jørgen et al. (1995). Development of salinity tolerance in underyearling smolts of Atlantic salmon (Salmo salar) reared under different photoperiods. (external link)
• Melingen, G. O.; Stefansson, Sigurd; Berg, A. et al. (1995). Changes in serum protein and IgM concentration during smolting and early post-smolt period in vaccinated and unvaccinated Atlantic salmon (Salmo salar L.). (external link)
• Imsland, A. K.; Folkvord, Arild; Stefansson, Sigurd (1995). Growth, oxygen consumption and activity of juvenile turbot (Scophthalamus maximus) reared under different temperatures and photoperiods. (external link)
• Björnson, B. T.; Stefansson, Sigurd; Hansen, T. (1995). Photoperiod Regulation of Plasma Growth Hormone Levels during Parr-Smolt Transformation of Atlantic Salmon: Implications for Hypoosmoregulatiory Ability and Growth. (external link)
• Berge, Åse Ingvill; Berg, Arne; Fyhn, Hans Jørgen et al. (1995). Development of salinity tolerance in underyearling smolts of Atlantic salmon (Salmo salar) reared under different photoperiods. (external link)
• Berg, Arne Erik; Stefansson, Sigurd Olav; Hansen, Tom Johnny (1994). Effect of reduced daylength on growth, sexual maturation and smoltification in Atlantic salmon (Salmo salar) underyearlings. (external link)
• Lyse, A. A.; Stefansson, Sigurd; Fernø, Anders (1994). Predation and dietary habits as possible explanations for poor return rates of stocked seatrout from the river Aurland. (external link)
• Berg, A.; Stefansson, Sigurd; Hansen, T. (1994). Effect of a simulated winter of different duration on growth and smoltification in Atlantic salmon (Salmo salar) underyearlings (Abstract). (external link)
• Bjørnsson, B. Th.; Taranger, G. L.; Hansen, T. et al. (1994). The interrelation between photo-period, growth hormone, and sexual maturation of adult Atlantic salmon (Salmo salar). (external link)
• Solbakken, V. A.; Hansen, T.; Stefansson, Sigurd (1994). Effects of photoperiod and temperature on growth and parr-smolt transformation in Atlantic salmon (Salmo salar L.) and subsequent performance in seawater. (external link)
• Stefansson, Sigurd; Hansen, Tom; Taranger, Geir Lasse (1993). Growth and Parr-smolt tranformation of Atlantic Salmon (Salmo salar L.) under different light intensities and subsequent survival and growth in seawater. (external link)
• Hansen, Tom Johnny; Stefansson, Sigurd Olav; Taranger, Geir Lasse (1992). Advancement and synchronization of ovulation in Atlantic salmon (Salmo salar L.) following injections of LHRH analogue. (external link)
• Saunders, R.L.; Berg, Arne Erik; Hansen, Tom Johnny et al. (1992). The potential for development of salinity tolerance in underyearling Atlantic salmon (Salmo salar). (external link)
• Stefansson, Sigurd; Berg, A. E.; Hansen, T. et al. (1992). The potential for development of salinity tolerance in underyearling Atlantic salmon (Salmo salar L.). (external link)
• Hansen, T.; Stefansson, Sigurd; Taranger, G. L. (1992). Growth and sexual maturation in Atlantic salmon, Salmo salar L. reared in sea cages at two different light regimes. (external link)
• Berg, A.; Hansen, T.; Stefansson, Sigurd (1992). First feeding of Atlantic salmon (Salmo salar L.) under different photoperiods. (external link)
• Hansen, Tom Johnny; Stefansson, Sigurd Olav; Taranger, Geir Lasse (1991). Growth and sexual maturation in Atlantic salmon (Salmo salar) reared in sea cages at two different light regimes. (external link)
• Berg, Arne Erik; Hansen, Tom Johnny; Stefansson, Sigurd Olav (1991). First feeding of Atlantic salmon (Salmo salar) under different photoperiods. (external link)
• Stefansson, Sigurd; Bjørnsson, T.; Hansen, T. et al. (1991). Growth, parr-smolt transformation and changes in growth hormone of Atlantic salmon (Salmo salar) reared under different photoperiods. (external link)
• Kråkenes, R.; Hansen, T.; Stefansson, Sigurd et al. (1991). Continous light increases growth of Atlantic salmon (Salmo salar) postsmolts in seacages. (external link)
• Stefansson, Sigurd Olav; Nortvedt, Ragnar; Hansen, Tom Johnny et al. (1990). First feeding of Atlantic salmon, Salmo salar L., under different photoperiods and light intensities. (external link)
• Stefansson, Sigurd Olav; Hansen, Tom Johnny (1989). The effect of spectral composition on growth and smoltification in Atlantic salmon (Salmo salar) and subsequent growth i sea cages. (external link)
• Stefansson, Sigurd Olav; Hansen, Tom Johnny (1989). Effects of tank colour on growth and smoltification of Atlantic salmon (Salmo salar L.). (external link)
• Stefansson, Sigurd Olav; Hansen, Tom Johnny; Nævdal, Gunnar (1989). Growth of different families of Atlantic salmon (Salmo salar) under three experimental photperiods. (external link)
• Stefansson, Sigurd Olav; Hansen, Tom Johnny; Nævdal, Gunnar (1989). The influence of three unchanging photoperiods on growth and parr-smolt transformation i Atlantic salmon, (Salmo salar L.). (external link)

Poster

• Fleming, Mitchell Stewart; Pino Martinez, Enrique; Hansen, Trine et al. (2021). Effect of water temperature and photoperiod on brain and pituitary maturation hormones during freshwater production stage of Atlantic salmon (Salmo salar L.). (external link)
• Espmark, Åsa Maria Olofsdotter; Kolarevic, Jelena; Johansen, Lill-Heidi et al. (2019). CtrlAQUA SFI – Contribution to Future Aquaculture. (external link)
• Tang, Patrik; Nilsen, Tom Ole; Sundh, Henrik et al. (2019). The effect of temperature on stress disturbance and skin barrier functions in Atlantic salmon (Salmo salar L. ) post- smolts. (external link)
• Sundell, K.; Sundh, H.; Nilsen, Tom Ole et al. (2016). Elevated plasma cortisol Levels and decreased intestinal barrier function in Atlantic cod (Gadus Morhua) reared in brackish water - a result of acclimation to low salinity or chronic stress?. (external link)
• Calabrese, Sara; Nilsen, Tom Ole; Handeland, Sigurd O et al. (2016). Farming intensification - impact on mental and physiological robustness of post-smolt Atlantic salmon (Salmo salar). (external link)
• Jönsson, E.B.; Sundell, K.; Nilsen, Tom Ole et al. (2016). Chronic ghrelin treatment stimulates food intake and growth in Atlantic salmon. (external link)
• Kristensen, Torstein; Urke, Henning Andre; Arnekleiv, Jo Vegar et al. (2009). Increased susceptibility to metal mine discharges during the smolt stage of Atlantic salmon (Salmo salar L.). (external link)
• Kristensen, Torstein; Urke, Henning Andre; Arnekleiv, Jo Vegar et al. (2009). Effects of metal exposure from acid mine drainage and groundwater on gill Na+,K+-ATPase subunit isoform mRNA expression, enzyme activity and physiology in Atlantic salmon (Salmo salar L.) smolts. (external link)
• Moen, Anne-Grethe Gamst; Stefansson, Sigurd Olav; Jordal, Ann-Elise Olderbakk et al. (2008). Leptin expression and energy homeostasis during long-term and short-term feed restriction in Atlantic salmon, Salmo salar. (external link)
• Murashita, Koji; Nilsen, Tom Ole; Jordal, Ann-Elise Olderbakk et al. (2008). Production of recombinant salmon leptin and its effects on growth in Atlantic salmon (Salmo salar). (external link)
• Murashita, Koji; Nilsen, Tom Ole; Jordal, Ann-Elise Olderbakk et al. (2008). Production of recombinant salmon leptin and its effects on growth in Atlantic salmon (Salmo salar). (external link)
• Kristensen, Torstein; Toften, Hilde; Damsgård, Børge et al. (2007). Sjøvannsinnblanding i intensiv smoltproduksjon: effekter på helse, velferd og risiko for vintersår. (external link)
• Mikkelsen, Helene; Toften, Hilde; Damsgård, Børge et al. (2007). Increased risk of winter ulcer in intensively produced Atlantic salmon juveniles exposed to seawater. (external link)
• Rosseland, Bjørn Olav; Kroglund, Frode; Salbu, Brit et al. (2007). Hvorfor er laks så følsom for surt vann og estuarine blandsoner?. (external link)
• Moen, Anne-Grethe Gamst; Stefansson, Sigurd; Jordal, Ann-Elise Olderbakk et al. (2007). Nutritional status of Atlantic salmon (Salmo salar) broodstock- A preliminary study on the maternal effects on early expression of leptin, IGF-I, IGF-IR, GH and GHR. (external link)
• Rønnestad, Ivar; Nilsen, Tom Ole; Stefansson, Sigurd et al. (2007). Exploring the functions of leptin in fish. (external link)
• Rosseland, Bjørn Olav; Kroglund, Frode; Salbu, Brit et al. (2006). Hvorfor er laks så følsom for surt vann, og hvilke andre faktorer påvirker laksens sjøoverlevelse og tilbakevandring til elv. (external link)
• Rosseland, Bjørn Olav; Rosten, Trond; Salbu, Brit et al. (2006). Dyrehelse og dyrevelferd i en intensiv produksjon.Vannkvalitetskriterier og effekter på fisk som kan brukes til å "måle" eller registrere velferd under ulike produksjonsforhold fra befruktning til sjøsetting og transport og opphold i sjø. (external link)
• Kroglund, Frode; Finstad, Bengt; Stefansson, Sigurd et al. (2005). Interactions between acidification in freshwater and sealice sensitivity as an underlying factor causing delayed responses. (external link)
• Hallaråker, Hogne; Folkvord, Arild; Pittman, Karin et al. (1993). Growth of (Hippoglossus hippoglossus L.) related to temperature, light period and feeding regime. (external link)
• Sunde, Leif Magne; Folkvord, Arild; Imsland, Albert et al. (1993). Effects of grading on growth of juvenile turbot (Scophthulmus maximus) at two temperatures. (external link)

Academic lecture

• Good, Chris; Summerfelt, S.; Vinci, Brian et al. (2019). The Freshwater Institute & CtrlAQUA, Norway: A multi-year research collaboration on RAS-based Atlantic salmon production. . (external link)
• Nuñez-Ortiz, Noelia; Moore, Lindsey; Jarungsriapisit, Jiraporn et al. (2018). Adaptive immune responses of Atlantic salmon (Salmo salar L.) to stimulation by Salmonid alphavirus subtype 3 infection or vaccination. (external link)
• Andersson, Roy; Eidesen, Pernille Bronken; Fiksen, Øyvind et al. (2017). Korleis få professorar med på ein kollegial SoTL-kultur?. (external link)
• Good, Christopher; Summerfelt, S.; May, T. et al. (2017). The effects of photoperiod on Atlantic salmon post-smolt in freshwater closed-containment systems. (external link)
• Sveen, Lene; Timmerhaus, Gerrit; Torgersen, Jacob Seilø et al. (2017). My skin don't lie. . (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Mæhle, Stig et al. (2016). SAV3 infection and shedding rate is dose dependent. (external link)
• Nilsen, Tom Ole; Andersson, Eva; McCormick, Stephen D. et al. (2016). Androgens up-regulate freshwater ion transporters in seawater acclimated Atlantic salmon (Salmo salar). (external link)
• Nilsen, Tom Ole; Sundh, H.; Andersson, E. et al. (2016). Effects of androgens on osmoregulatory mechanisms in Atlantic salmon (Salmo salar L.). (external link)
• Nilsen, Tom Ole; Sundh, H.; Andersson, Eva et al. (2016). Osmoregulatory changes in sexually maturing Atlantic salmon post-smolt and adults. (external link)
• Calabrese, Sara; Sævareid, Bjarte; Breck, Olav et al. (2016). Semi-closed sea systems for postsmolt Atlantic salmon. (Abstract ID 42049).. (external link)
• Ytrestøyl, Trine; Takle, Harald Rune; Kolarevic, Jelena et al. (2015). Atlantic salmon post-smolts in RAS: Effects of salinity, exercise and timing of seawater transfer on performance, physiology and welfare. (external link)
• Calabrese, Sara; Handeland, Sigurd O; Sævareid, Bjarte et al. (2015). Semi-closed sea systems for postsmolt Atlantic salmon. Conference Abstract p. 123. (external link)
• Moore, Lindsey; Jarungsriapisit, Jiraporn; Taranger, Geir Lasse et al. (2015). Immunological parameters correlating with viraemic period of salmonid alphavirus infection in Atlantic Salmon post-smolts.. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Nilsen, Tom Ole et al. (2015). Atlantic salmon, salmo salar I., post-smolts are more susceptible to salmonid alphavirus infection during the initial phase after seawater transfer.. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Taranger, Geir Lasse et al. (2015). Atlantic salmon, Salmon salar1, post-smolts are more susceptible to salmon alphavirus infection during the initial phase after sea water transfer.. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Furne, Miriam et al. (2015). Physiological and immunological parameters affecting salmonid alphavirus infection in Atlantic salmon at post-smolt stages. (external link)
• Ytrestøyl, Trine; Takle, Harald Rune; Kolarevic, Jelena et al. (2015). Atlantic salmon post-smolts in RAS: effects of salinity, exercise and timing of seawater transfer on performance, physiology and welfare. In Book of abstracts, p. 39. (external link)
• Calabrese, Sara; Nilsen, Tom Ole; Fivelstad, Sveinung et al. (2014). The effects of increased CO2 on postsmolt Atlantic salmon Salmo salar growth, physiology and stress responsiveness. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Furne, Miriam et al. (2014). MitSAV: Mitigating the challenges in the Atlantic salmon aquaculture caused by salmonid alphavirus by unveiling the underlying immune mechanisms. (external link)
• Gorissen, Marnix; Nilsen, Tom Ole; Bye-Ingebrigtsen, Einar et al. (2014). EXPLORING PHYSIOLOGICAL FUNCTIONS OF THE PLEIOTROPHIC MELANOCORTIN ALPHA-MSH IN ATLANTIC SALMON. (external link)
• Andersson, Eva; Melo, Michelle; Fjelldal, Per Gunnar et al. (2014). Saltholdighet og fotoperiode påvirker postsmoltmodning og genuttrykk hos laksehanner.. (external link)
• Nilsen, Tom Ole; Andersson, Eva; Sundh, Henrik et al. (2014). Tidlig kjønnsmodning påvirker laksens evne til å regulere vann- og salt balansen i sjø - et velferdsproblem?. (external link)
• Nilsen, Tom Ole; Andersson, Eva; Sundh, Henrik et al. (2014). Effects of androgens and cortisol on gill ion transporters and osmoregulatory capacity in atlantic salmon. (external link)
• Sundh, Henrik; Nilsen, Tom Ole; Jönsson Bergman, Elisabeth et al. (2014). Nutrient transport in the Atlantic salmon (Salmo salar) is affected by environmental salinity.. (external link)
• Terjesen, Bendik Fyhn; Ytrestøyl, Trine; Kolarevic, Jelena et al. (2013). Effects of salinity and exercise on Atlantic salmon postsmolts reared in land-based RAS. (external link)
• Handeland, Sigurd O; Stefansson, Sigurd Olav; Ebbesson, Lars O.E. et al. (2012). Økende temperaturer fremskynder smoltutvikling hos Vosso laks. Resultat fra prosjektet: "The smolt probe - novel tools for assessment of smolt quality and marine performance in Atlantic salmon (SmoltProbe)". (external link)
• Kroglund, Frode; Finstad, Bengt; Pettersen, Kristian et al. (2009). Atlantic salmon smolt recovery rates following short term aluminum exposure. (external link)
• Finstad, Bengt; Kroglund, Frode; Pettersen, Kristian et al. (2009). Salmon lice induced mortality of Atlantic salmon postsmolts experiencing a previous history of poor water quality in freshwater. (external link)
• Toften, Hilde; Mikkelsen, Helene; Hansen, L.A. et al. (2009). Do exposure to saline water and intensive rearing during smoltification affect performance and disease resistance in Atlantic salmon?. (external link)
• Rønnestad, Ivar; Moen, Anne-Grethe Gamst; Murashita, Koji et al. (2008). Exploring the roles of leptin in fish. (external link)
• Fivelstad, Sveinung; Waagbø, Rune; Stefansson, Sigurd et al. (2006). Long-term effects of reduced water flow, increased carbon dioxide and reduced pH(AI) on Atlantic Salmon welfare Salmo salar L. (external link)
• Hosfeld, Camilla Diesen; Fivelstad, Sveinung; Waagbø, Rune et al. (2006). Long-term separate and combined effects of environmental hypercapnia and hyperoxia in Atlantic Salmon Salmo salar L.smolts. (external link)
• Rosseland, Bjørn Olav; Salbu, Brit; Kroglund, Frode et al. (2005). Status og utfordringer innen vannkvalitet og vannbehandling for ulike livsstadier av laks ved intensivt oppdrett. (external link)
• Kroglund, Frode; Finstad, Bengt; Stefansson, Sigurd et al. (2005). Exposure to acid water and aluminium reduces Atlantic salmon postsmolt survival. (external link)
• Finstad, Bengt; Kroglund, Frode; Strand, Rita et al. (2005). Salmon lice or suboptimal water quality ? reasons for reduced postsmolt survival?. (external link)
• Toften, Hilde; Johansen, Lill-Heidi; Sommer, Ann-Inger et al. (2005). Intensive rearing and welfare in juvenile Atlantic salmon. (external link)
• Bæverfjord, Grete; Espmark, Åsa Maria Olofsdotter; Rosseland, Bjørn Olav et al. (2004). O2-overmetning. Fysiologi, helse og prestasjoner i sjøperioden. (external link)
• Toften, Hilde; Arnesen, Arne Mikal; Damsgård, Børge et al. (2004). Intensivt oppdrett av laksesmolt: konsekvenser for laksens prestasjoner i ferskvannsfasen og etter overføring til sjø. (external link)
• Finstad, Bengt; Kroglund, Frode; Stefansson, Sigurd et al. (2004). Forsuring eller lakselus: effekter på postsmoltoverlevelse. (external link)
• Nilsen, Tom; Ebbesson, Lars O. E.; Stefansson, Sigurd (2002). Smolting in anadromous and landlocked strains of Atlantic salmon (Salmo salar). (external link)
• Moya-Falcon, Corina; Stefansson, Sigurd; Thomassen, Magny Skinlo et al. (2002). Effect of different dietary lipids on Atlantic salmon (Salmo salar) growth, fatty acid composition of Gills and Gill Na+, K+-ATPase Activity. (external link)
• Vikingstad, Erik Jari M; Andersson, Eva; Klenke, Ulrike et al. (2002). EFFECTS OF PHOTOPERIOD, TEMPERATURE AND GnRHa TREATMENT ON THE TIMING OF SPAWNING AND EGG AND SPERM QUALITY IN ATLANTIC SALMON (SALMO SALAR L.). (external link)
• Stefansson, Sigurd (2000). Three forms of GnRH in the brain and pituitary of the turbot, Scophthalmus maximus: immunological characterization and seasonal variation. Comp. Biochem. Physiol. 00, 000-000. (external link)
• Jonassen, Thor Magne; Simensen, Linda Marie; Imsland, Albert et al. (1996). Lysregimet påvirker vekst hos ung kveite (Hippoglossus hippoglossus) i oppdrett. (external link)
• Stefansson, Sigurd; Berge, Åse Ingvill; Gunnarsson, G. S. et al. (1994). Photoperiod and temperature control of salinity tolerance, gill NA+, K+-ATPase activity and seawater performance underyearling Atlantic salmon (salmo salar L.). (external link)
• Bjørnsson, B. Th.; Stefansson, Sigurd; Hansen, T. (1994). Photoperiodic regulation of plasma growth hormone levels during parr-smolt transformation of Atlantic salmon: implications for hypoosmoregulatory ability and growth. (external link)
• Hallaråker, Hogne; Folkvord, Arild; Pittman, Karin et al. (1993). Growth of O%+ halibut related to temperature, light period and feeding regime. (external link)
• Nilsen, Espen Raa; Berg, Arne; Wergeland, Heidrun Inger et al. (1993). Sammenheng mellom smoltkvalitet og immunsvar hos laks etter vaksinasjon med Vibrio salmonicida. (external link)
• Hansen, T.; Berg, A.; Stefansson, Sigurd et al. (1992). Photoperiodic effects on growth, gonadal development and flesh colouring in Atlantic salmon (Salmo salar). (external link)
• Rahman, M.; Hansen, T.; Stefansson, Sigurd (1992). Growth and parr-smolt transformation of individually tagged Atlantic salmon (Salmo salar L.) transferred between continuous light and simulated natural photoperiod. (external link)
• Taranger, G. L.; Stefansson, Sigurd; Bjørnsson, B. T. et al. (1992). Photoperiodic control of sexual maturation in Atlantic salmon. (external link)
• Solvang, B.; Hansen, T.; Saunders, R. L. et al. (1992). Parr-smolt transformation of Atlantic salmon (Salmo salar) at different water temperatures. (external link)
• Berg, A.; Berge, Åse Ingvill; Hansen, T. et al. (1992). Smolting in underyearling Atlantic salmon (Salmo salar). (external link)
• Solbakken, V. A.; Hansen, T.; Stefansson, Sigurd (1992). Effects of photoperiod and temperature on growth and parr-smolt transformation in Atlantic salmon (Salmo salar L.) and subsequent post-smolt performance in seawater. (external link)
• Berg, A.; Berge, Åse Ingvill; Hansen, T. et al. (1992). The importance of fish size and photoperiod on growth in Atlantic salmon (Salmo salar) 0+ smolts. (external link)
• Skilbrei, O. T.; Hansen, T.; Stefansson, Sigurd (1992). Effects of reduced daylength on growth and bimodality in Atlantic salmon (Salmo salar L.). (external link)
• Handeland, Sigurd O; Järvi, T.; Fernø, Anders et al. (1991). Consequences of seawater acclimation on the survival of Atlantic salmon (Salmo Salar L.) smolts in the presence of cod (Gadus morhua L.). (external link)
• Stefansson, Sigurd (1991). Factors affecting the quality of Atlantic salmon smolts for use in sea ranching. (external link)
• Stefansson, Sigurd; Bjørnsson, B. Th.; Hansen, T. et al. (1991). Effect of photoperiod during parr-smolt transformation on sexual maturation in Atlantic salmon. (external link)
• Sølsnes, E.; Taranger, G. L.; Stefansson, Sigurd et al. (1991). Growth and sexual maturation of Atlantic salmon under two temperature regimes in floating enclosures. (external link)
• Vestfossen, K.; Taranger, G. L.; Stefansson, Sigurd et al. (1991). Growth and sexual maturation in reared Atlantic salmon (Salmo salar). (external link)
• Taranger, G. L.; Haux, C.; Walther, Bernt T. et al. (1991). Photoperiodic control of growth, incidence of sexual maturation and ovulation in adult Atlantic salmon. (external link)
• Haux, C.; Hansen, T.; Stefansson, Sigurd et al. (1991). Effects of photoperiod on plasma GtH 1 and GtH 2 levels during sexual maturation in Atlantic salmon. (external link)
• Bjørnsson, B. Th.; Stefansson, Sigurd; Taranger, G. L. et al. (1991). Photoperiodic control of plasma growth hormone levels and sexual maturation of adult Atlantic salmon. (external link)

Doctoral dissertation

• Calabrese, Sara; Stefansson, Sigurd Olav (2017). Environmental and biological requirements of post-smolt Atlantic salmon (Salmo salar L.) in closed-containment aquaculture systems. (external link)
• Stefansson, Sigurd (1990). The influence of light on growth and parr-smolt transformation of Atlantic salmon (Salmo salar L.) : effects of spectral compositon, light intensity and photoperiod. (external link)

Lecture

• Jarungsriapisit, Jiraporn; Moore, Lindsey; Mæhle, Stig et al. (2017). SAV3 infection and shedding rate is dose dependent. (external link)
• Nuñez-Ortiz, Noelia; Moore, Lindsey; Furmanek, Tomasz et al. (2017). A comparative study of diploid and triploid Atlantic salmon post-smolts upon SAV-3 bath challenge and their immune transcriptomatic responses. (external link)
• Moore, Lindsey; Nilsen, Tom Ole; Jarungsriapisit, Jiraporn et al. (2017). Infection of Diploid and Triploid Atlantic Salmon with Salmonid Alpha Virus Subtype 3 (SAV3). (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Mæhle, Stig et al. (2017). Dynamics of salmonid alphavirus infection and shedding rate is dose dependent. (external link)
• Jarungsriapisit, Jiraporn; Moore, Lindsey; Fiksdal, Ingrid Uglenes et al. (2016). Atlantisk laks er mer utsatt ved 2 uker enn ved 9 uker etter sjøvannutsett til SAV3 infeksjon. (external link)
• Moore, Lindsey; Jarungsriapisit, Jiraporn; Nilsen, Tom Ole et al. (2016). Immune responses in Atlantic salmon bath infected with salmonid alphavirus. (external link)
• Sveen, Lene; Ytteborg, Elisabeth; Timmerhaus, Gerrit et al. (2016). Effect of stress on wound healing and gene regulation in skin of posts-smolts (Salmo salar L.) in closed-containment aquaculture systems (in Norwegian). In Abstracts RCN Program conference Mariculture 2016. (external link)

Popular scientific article

• Nilsen, Tom Ole; Lukas, Juliane; Valen, Ragnhild et al. (2015). Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. (external link)
• Nilsen, Tom Ole; Ebbesson, Lars O.E.; Kverneland, Ole Gabriel et al. (2010). Ny metode kan påvise skader hos laksesmolt som er utsatt for aluminiumsrikt surt vann. (external link)
• Kroglund, Frode; Finstad, Bengt; Pettersen, Kristian et al. (2010). Forsuringsskader og helbredningsstid for laksesmolt. (external link)
• Stefansson, Sigurd (1993). Smolten - et nøkkelstudium i livssyklus til laks. (external link)
• Stefansson, Sigurd (1993). Kultivering av atlantisk laks i Nordamerika. (external link)

Article in business/trade/industry journal

• Calabrese, Sara; Handeland, Sigurd O; Terjesen, Bendik Fyhn et al. (2014). Krav til fisketetthet og vannforbruk. (external link)
• Handeland, Sigurd O; Urke, Henning Andre; Kristensen, Torstein et al. (2008). Påvirker vannkvalitet og produksjonsintensitet risiko for utvikling av vintersår hos postsmolt - Resultater fra en storskala feltstudie. (external link)

Editorial

• Schreck, Carl B.; McCormick, Stephen D.; Björnsson, Björn Thrandur et al. (2012). Introduction to the 8th International Workshop on Smoltification and a synthesis of major findings. (external link)

Report

• Kroglund, Frode; Høgberget, Rolf; Haraldstad, Tormod et al. (2011). Påvirkes laksesmolt av aluminium i brakkvann? Telemetriundersøkelser i Storelva i Holt, Aust-Agder, 2007. (external link)
• Kroglund, Frode; Høgberget, Rolf; Haraldstad, Tormod et al. (2011). Are salmon smolt affected by aluminum in estuaries? Results from River Storelva, 2008. (external link)
• Hjeltnes, Brit; Waagbø, Rune; Finstad, Bengt et al. (2008). Transportation of fish within a closed system. Opinion of the Panel on Animal Health and Welfare of the Norwegian Scientific Committee for Food Safety. (external link)
• Kroglund, Frode; Gutterup, Jim; Kleiven, Einar et al. (2007). Aluminium, et miljøproblem for laks i Sandnesfjorden, Aust-Agder. (external link)
• Stefansson, Sigurd; Bæverfjord, Grete; Handeland, Sigurd O. et al. (2006). Fiskevelferdsmessig vurdering av produksjon av 0-års smolt. (external link)
• Farstad, Wenche Kristin; Arnemo, Jon Martin; Braastad, Bjarne Olai et al. (2006). Dyrevelferdsmessig risikovurdering av produksjon av 0-årssmolt. Uttalelse fra Faggruppe for Dyrehelse og Dyrevelferd (Dyrevern) i Vitenskapskomiteen for mattrygghet. (external link)
• Handeland, Sigurd O; Wilkinsson, E.; Stefansson, Sigurd (2001). Smolting and de-smolting at different temperatures in two strains of Atlantic salmon (Salmo salar L.). (external link)
• Handeland, Sigurd O.; Wilkinsson, E; Stefansson, Sigurd (2001). Smolting and de-smolting at different temperatures in two strains of Atlantic salmon (Salmo salar L.). (external link)
• Folkvord, Arild; Blom, Geir; Helvik, Jon Vidar et al. (1998). Teori- og eksperimentbasert studie av rekruttering hos marin fisk. Sluttrapport for del I av Strategisk Program. (external link)
• Lyse, Alv Arne; Stefansson, Sigurd; Fernö, Anders et al. (1997). Undersøkelser av habitat og produksjon av sjøauresmolt (Salmo trutta L.) fra bekker og elver i Kvam herad, Hordaland. (external link)
• Lyse, Alv Arne; Stefansson, Sigurd; Fernö, Anders et al. (1997). Undersøkelser av habitat og produksjon av sjøauresmolt (Salmo trutta L.) fra sidebekker og sideelver til Lærdalselva. (external link)
• Lyse, Alv Arne; Stefansson, Sigurd; Fernø, Anders (1996). Undersøkelser av vandringsadferd, diett og predasjon i tidlig postsmoltfase hos sjøaure (Salmo trutta L.) fra Aurlandselva, Indre Sogn. (external link)
• Handeland, Sigurd O; Järvi, T.; Fernø, Anders et al. (1991). Consequences of seawater acclimation on the survival of Atlantic salmon (Salmo Salar L.) smolts in the presence of cod (Gadus morhua L.). (external link)

Academic chapter/article/Conference paper

• Stefansson, Sigurd Olav; Bjørnsson, B. Th.; Ebbesson, Lars O.E. et al. (2008). Smoltification. (external link)
• Stefansson, Sigurd; Bjerknes, Vilhelm; Bjørn, Pål Arne et al. (2007). Fysiologiske egenskaper ved rogn, yngel og smolt. (external link)
• Stefansson, Sigurd; Bæverfjord, Grete; Nigel Finn, R et al. (2007). Water Quality - Salmonids. (external link)
• Stefansson, Sigurd; Bjerknes, Vilhelm; Bjørn, Pål Arne et al. (2007). Fysiologiske egenskaper ved rogn, yngel og smolt. (external link)
• Stefansson, Sigurd; Bæverfjord, Grete; Finn, Roderick Nigel et al. (2006). Vannkvalitet - laksefisk. (external link)
• Stefansson, Sigurd; Hansen, Tom (1996). Smoltifisering hos laks - en tilpasning til livet i sjøvann. (external link)
• Stefansson, Sigurd; Blaalid, Gustav Erik; Møller, Dag (1996). Oppdrett av laks i Norge - en kort oversikt. (external link)
• Tananger, G. L.; Haux, C.; Walther, Bernt T. et al. (1991). Photoperiodic control of growth, incidence of sexual maturation and ovulation in adult Atlantic salmon (#_S#_a#_l#_m#_o#_ #_s#_a#_l#_a#_r ). (external link)

Masters thesis

• Hammer, Jannicke; Stefansson, Sigurd; Handeland, Sigurd O (2007). Effects of stocking density on smoltification and growth of Atlantic salmon (Salmo salar L.). (external link)
• Kverneland, Ole Gabriel; Stefansson, Sigurd (2006). Impacts of long and short-term combinations of acidic water and aluminium on gill Na+, K+-ATPase enzyme activity and isospecific alfa-subunit gene expression in Atlantic salmon (Salmo salar)smolts. (external link)
• Remen, Mette; Stefansson, Sigurd (2006). Interactive effects of ammonia and oxygen on growth and physiological status of juvenile Atlantic cod (Gadus morhua). (external link)

Other

• Kroglund, Frode; Finstad, Bengt; Stefansson, Sigurd et al. (2006). Interactions between acidification in fresh water and sea lice sensitivity as an underlaying factor causing delayed responses. (external link)
• Toften, Hilde; Johansen, Lill-Heidi; Sommer, Ann-Inger et al. (2005). Intensive rearing and welfare in juvenile Atlantic salmon. (external link)

Abstract

• Toften, Hilde; Johansen, Lill-Heidi; Sommer, Ann-Inger et al. (2005). Intensive rearing and welfare in juvenile Atlantic salmon. (external link)

Thesis at a second degree level

• Kristoffersen, Cathrine; Stefansson, Sigurd (2005). A histomorphometric study of testis of Atlantic cod (Gadus morhua, L.) exposed to continuous light of various intensities. (external link)
• Wergeland, Trond; Stefansson, Sigurd (2004). Vekst hos feilpigmentert og pigmentert kveite (Hippoglossus hippoglossus L.) og piggvar (Scophthalmus maximus Rafinesque). (external link)
• Takvam, Børge; Stefansson, Sigurd; Ebbesson, Lars (2004). Effect of L-Thyroxine (T4) treatment on gill Na+, K+-ATPase activity and circulating plasma hormone levels during smoltification in Atlantic salmon (Salmo salar). (external link)

See a complete overview of publications in Cristin.

Selected publications (2013-2017)

2017

Imsland, A.K.D., Roth, B., Fjelldal, P.G., Stefansson, S.O., Handeland, S. and Mikalsen, B., 2017. The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens. Aquaculture, 479, 645-651. DOI: 10.1016/j.aquaculture.2017.07.014

Moore L. J., Nilsen T. O., Jarungsriapisit J., Fjelldal P. G., Stefansson S. O., Taranger G. L. and Patel, S., 2017. Triploid Atlantic salmon (Salmo salar L.) post-smolts accumulate prevalence more slowly than diploid salmon following bath challenge with salmonid alphavirus subtype 3. PLoS ONE 12(4): e0175468. https://doi.org/10.1371/journal.pone.0175468

Moore, L. J., Jarungsriapisit, J., Nilsen, T. O., Stefansson, S., Taranger, G. L., Secombes, C. J., Morton, H. C. and Patel, S., 2017. Immune gene profiles in Atlantic salmon (Salmo salar L.) post-smolts infected with SAV3 by bath-challenge show a delayed response and lower levels of gene transcription compared to injected fish. Fish and Shellfish Immunology, 62, 320-331.

Calabrese, S., T.O.  Nilsen, J. Kolarevic, L.O.E. Ebbesson, C. Pedrosa, S. Fivelstad, C. Hosfeld, S.O. Stefansson, B.F. Terjesen, H. Takle, C.I.M. Martins, H. Sveier, F. Mathisen, A.K. Imsland and S.O. Handeland, 2017. Stocking density limits for post-smolt Atlantic salmon (Salmo salar L.) with emphasis on production performance and welfare. Aquaculture, 468, 363-370. DOI: 10.1016/j.aquaculture.2016.10.041

2016

Imsland, A. K., K. Pettersen and S. O. Stefansson, 2016. Growth and  smoltification of three Norwegian strains of Atlantic salmon reared under different thermal regimes. River Res. Applic., 32, 1800–1807. DOI: 10.1002/rra.3011

Døskeland, I., Imsland, A. K., Fjelldal, P. G., Stefansson, S. O., Roth, B., Eriksen, K. E., Mikalsen, B. and Handeland, S. O., 2016. The effect of low temperatures and photoperiods on growth and vertebra morphometry in Atlantic salmon. Aquacult. Int., 24,1421–1434. DOI 10.1007/s10499-016-9999-7

Jarungsriapisit, J., L. J. Moore, G. L. Taranger, T. O. Nilsen, H. C. Morton, I. U. Fiksdal, S. Stefansson, P. G. Fjelldal, Ø. Evensen and S. Patel, 2016. Atlantic salmon (Salmo salar L.) post-smolts challenged two or nine weeks after seawater-transfer show differences in their susceptibility to salmonid alphavirus subtype 3 (SAV3) Virology Journal, 13 Article Number 66 DOI: 10.1186/s12985-016-0520-8

Vikingstad, E., Andersson, E., Hansen, T. J., Norberg, B., Mayer, I., Stefansson, S. O., Fjelldal, P. G. and Taranger, G. L., 2016. Effects of temperature on the final stages of sexual maturation in Atlantic salmon (Salmo salar L.). Fish Physiol. Biochem. 42,.895-907. DOI: 10.1007/s10695-015-0183-1

Angotzi, A.R, S. O. Stefansson, T. O. Nilsen, J. I. Øvrebø, E. Andersson, G. L. Taranger and I. Rønnestad, 2016. Identification of a novel leptin receptor duplicate in Atlantic salmon: Expression analyses in different life stages and in response to feeding status. Gen. Comp. Endocrinol., 235, 108-119, http://dx.doi.org/10.1016/j.ygcen.2016.06.004

Sveen, L. R., Timmerhaus, G., Torgersen, J. S., Ytteborg, E., Jørgensen, S. M., Handeland, S., Stefansson, S. O., Nilsen, T. O., Calabrese, S., Ebbesson, L., Terjesen, B. F. and Takle, H., 2016, Impact of fish density and specific water flow on skin properties in Atlantic salmon (Salmo salar L.) post-smolts, Aquaculture, 00, 000-000, doi: 10.1016/j.aquaculture.2016.08.012

2015

Salmerón, C., Johansson, M., Asaada,M., Angotzi, A.R., Rønnestad, I., Stefansson, S. O., Jönsson, E., Björnsson, B. Th., Gutiérrez, J., Navarro, I. and Capilla, E., 2015. Roles of leptin and ghrelin in adipogenesis and lipid metabolism of rainbow trout adipocytes in vitro. Comp. Biochem. Physiol., A 188, 40-48. doi:org/10.1016/j.cbpa.2015.06.017

2014

Sundh, H., Nilsen, T.O., Lindström, J., Hasselberg-Frank, L., Stefansson, S.O., McCormick, S.D., Sundell, K. (2014). Development of intestinal transport mechanisms during smoltification in Atlantic salmon smoltification and acclimation to seawater. J. Fish Biol. 85, 1227-1252. doi:10.1111/jfb.12531

Handeland, S.O., Imsland, A.K., Nilsen, T.O., Ebbesson, L.O.E., Hosfeld, C.D., Pedrosa, C., Stefansson, S.O., (2014). Osmoregulation in wild Atlantic salmon smolts transferred to seawater at different temperatures. J. Fish Biol., 85, 1163-1176. doi:10.1111/jfb.12481

Einarsdóttir, I.E., Gong, N., Jönsson-Bergman, E., Sundh, H., Hasselberg Frank, L., Nilsen, T.O., Stefansson, S.O., Sundell, K., Björnsson, B.Th., (2014). Plasma growth hormone binding protein levels in Atlantic salmon (Salmo salar L.) during smoltification and seawater transfer. J. Fish Biol. 85, 1279-1296. doi: 10.1111/jfb.12473

Imsland, AK, Handeland, SO and Stefansson, SO, 2014. Photoperiod and temperature effects on growth and maturation of pre- and post-smolt Atlantic salmon. Aquaculture International, 22, 1331-1345. doi: 10.1007/s10499-014-9750-1

Handeland, SO, Imsland, AK, Ebbesson, LOE, Nilsen, TO, Hosfeld, CD, Teien, HC and Stefansson, SO, 2014. Osmoregulation and growth in offspring of wild Atlantic salmon at different temperatures. Env. Biol. Fishes, 97, 285-296. doi: 10.1007/s10641-013-0151-5

2013

Nilsen, TO, LOE Ebbesson, SO Handeland, F Kroglund, B Finstad, AR Angotzi, SO Stefansson, 2013. Atlantic salmon (Salmo salar L.) smolts require more than two weeks to recover from acidic water and aluminum exposure. Aquatic Toxicol., 142, 33-44. doi.org/10.1016/j.aquatox.2013.07.016

Imsland, A. K., Handeland, S. O., Björnsson, B. Th. and Stefansson, S. O., 2013. Long-term effects of photoperiod and temperature and their interaction on growth, gill Na⁺,K⁺-ATPase activity, seawater tolerance and plasma growth hormone levels in Atlantic salmon. J. Fish Biol., 83, 1197-1209

Grassie, C., V.A. Braithwaite, J. Nilsson, T.O. Nilsen, H-C. Teien, S.O. Handeland, S.O. Stefansson, V. Tronci, M. Gorissen, G. Flik & L.O.E. Ebbesson, 2013. Aluminum exposure impacts brain plasticity and behavior in Atlantic salmon (Salmo salar). J. Exp. Biol., 216, 3148-3155, doi:10.1242/jeb.083550

Angotzi, A. R., Stefansson, S., Nilsen, T. O., Rathore, R. M. and Rønnestad, I. 2013. Molecular cloning and genomic characterization of novel Leptin-like genes in salmonids provide new insight into the evolution of the Leptin gene family. Gen. Comp. Endocrinol., 187, 48-59, doi: 10.1016/j.ygcen.2013.03.022  

Handeland, S. O., Imsland, A. K., Ebbesson, L. O. E., Nilsen, T. O., Hosfeld, C. D., Teien, H. C. and Stefansson, S. O., 2013. Osmoregulation and growth in offspring of wild Atlantic salmon at different temperatures. Environmental Biology of Fishes, 97, 285-296.

Handeland, S. O., Imsland, A. K., Ebbesson, L. O. E., Nilsen, T. O., Hosfeld, C. D., Baeverfjord, G., Espmark, Å., Rosten, T., Skilbrei, O. T., Hansen, T., Gunnarsson, G. S., Breck, O. and Stefansson, S. O., 2013. Low light intensity can reduce Atlantic salmon smolt quality. Aquaculture, 384-387, 19-24. doi: org/10.1016/j.aquaculture.2012.12.016

Handeland, S. O., Imsland, A. K, Björnsson, B. Th., Stefansson, S. O. and Porter, M. 2013. Physiology during smoltification in Atlantic salmon: effect of melatonin implants. Fish Physiol. Biochem., 39, 1079-1088. doi: 10.1007/s10695-012-9765-3

Urke, H.A., Kristensen, T., Arnekleiv, J.V., Haugen, T.O., Kjærstad, G., Stefansson, S.O., Ebbesson, L.O.E. and Nilsen, T.O., 2013. Seawater tolerance and post-smolt migration of wild Atlantic salmon Salmo salar × brown trout S. trutta hybrid smolts, J. Fish Biol., 82, 206–227, doi:10.1111/j.1095-8649.2012.03481.x

National projects (Research Council of Norway)

NFFR V.701.146 'Miljøforholdene i settefisk­produksjon', 1986 - 1988

NTNF HB 23.22395 'Lys i fiskeoppdrett', 1987 - 1989

NFFR V.701.211 'Halvtårssmolt', 1988 - 1990

NFFR V.701.236 'Lys i matfiskprodu­ksjon', 1989 - 1991

NFFR 1401-701.321 'Smoltkvalitet og helse', 1991 - 1993

NFR 108848 ‘Smoltkvalitet, sesonguavhengig utsetting og tidlig sjøvannsfase’, 1995 - 1998

NFR 108098 ‘Postsmoltøkologi – trofisk nivå og vandringer’, 1995 - 1997

NFR 110993 ‘Miljømessig og arvelig regulering av vekst hos ung kveite i oppdrett’, 1996 - 1999

NFR 122845 ‘Det arvelige grunnlaget for smoltifisering hos oppdrettslaks og villaks – en grunnleggende studie’, 1998 - 2000

NFR 133964 ’Vannbehov og vannkvalitet under intensiv smoltproduksjon. Hva er grenseverdiene og hvordan unngå skadelige effekter av lav vanngjennomstrømming, lav pH og høg CO₂ under intensiv smoltproduksjon?’, 2000 – 2002

NFR 133937 ‘Control of age at first sexual maturity (puberty) in farmed Atlantic salmon’, 2000 – 2002

NFR 149790 'Distribution and ecology of post-smolt and salmon at sea', 2002 - 2005

NFR 149796 ‘The importance of early marine feeding on the growth and survival of Atlantic salmon post-smolt in Norwegian fjords’, 2002 - 2006

NFR 153230 ‘Environmental control of smolt brain development’, 2003 – 2005

NFR 165331 ‘Environmental impact and molecular regulation of the osmoregulatory gill during parr-smolt transformation in Atlantic salmon’, 2005 – 2007

NFR 163429 ‘Optimisation of harvested halibut by lowering maturation, increasing growth and improving flesh quality’ 2005 – 2007

NFR 165239 ‘Sjøvannsinnblanding i intensiv smoltproduksjon: effekter på helse, velferd og risiko for vintersår’, 2005 – 2007

NFR 172504 ’Nitric oxide regulation of development in fish: emphasis on the light-brain-pituitary axis and gill during salmon smoltification’, 2006 - 2008

NFR 1722630 ‘Progressive, modern production of juvenile Atlantic cod’ (PROCOD), 2006 - 2009

NFR 172514 ‘Moderne settefiskproduksjon av laks - normal utvikling og velferd i intensive oppdrettsystemer’, 2006 - 2009

NFR 184997 ‘Optimal smolt production and post smolt performance in the High North - Seawater intermixing, low temperatures and intensive rearing’ (NORSMOLT), 2008 – 2011

NFR 190469 ‘Fish welfare assessment through brain function: Impacts of environmental stress on brain plasticity and behaviour’, 2009 – 2011

NFR 199800 ‘The smolt probe - novel tools for assessment of smolt quality and marine performance in Atlantic salmon’, 2010 – 2012

NFR 199518 ‘Early puberty in salmon males in seawater - causes and consequences for hypoosmoregulatory ability and welfare’, 2010 – 2013

NFR 199482 ‘Cod Development CODE’, 2010 – 2013

NFR 222215 ’The smolt brain model: Unraveling nature´s regulation of neural plasticity’, 2013 – 2015

NFR 233870 ‘Welfare of Atlantic salmon postsmolts in closed-containment production systems, using a function-based approach’ (SalmoFutura), 2014-2016

NFR 256199 ‘Optimal bruk av rognkjeks til avlusing av oppdrettslaks, LUSINFE’R, 2016 – 2020

NFR 269043 ‘Kontroll av kjønnsmodning hos rognkjeks, STAMINA’, 2017 – 2021

National strategic programs (Research Council of Norway)

114646 ‘Teori- og eksperimentbasert studie av rekruttering hos marin fisk’, 1995 - 1998

136260 ‘Smolting in Atlantic salmon: the interrelationship between physiological, endocrine and immunological changes, and their genetic regulation’, 2000 - 2006

Other national programs (Fiskeri og havbruksnæringens forskningsfond, FHF)

FHF/NFR 155157 'Vannkvalitet – smoltkvalitet', 2003 – 2005

International projects

Nordisk Industri­fond 88.107 'Helårlig produksjon av atlantisk laks ved styrt kjønns­mo­dning og smoltifiser­ing', 1988 - 1991

EU, FAIR-CT96-1410 ‘Environmental and neuroendocrine control mechanisms in finfish reproduction and their application in broodstock management’, 1997 - 1999

EU, FAIR-CT97-3544 ‘A multidisciplinary evaluation and optimization of the production characteristics of different strains of commercially cultured flatfish’, 1998 - 2000

Wallenberg foundation, 1997 - 2001

‘Aquaculture and Fisheries Development: Basic Research on Finfish Reproduction and Growth Enabling the Intensification of Aquaculture’

‘The Multiple Gonadotropin-Releasing Hormones (GnRH) of Fish: Functions and Potential Use for Spawning Manipulations in Commercially and Ecologically Important Fish Species’

EU, QoL, QLRT-2001-01801 ‘Photoperiod control of puberty in farmed fish: Development of new techniques and research into underlying physiological mechanisms’, 2002 - 2005

EU, LSF ‘Marine Pelagic Food Chain Research’, (Contract N^o ERBFMGECT950013)

Research collaborators/topics:

Professor Niall Bromage, University of Stirling, Skottland

Temperature effects on melatonin in post-smolt Atlantic salmon (Salmo salar), 1997

Professor Sjoerd E. Wendelaar Bonga, Katholieke Universiteit Nijmegen, Nederland

The effect of temperature on growth performance and stress resistance in two generations of turbot (Scophthalmus maximus Rafinesque), 1997

Influence of temperature and feeding ration on the bioenergetics of juvenile turbot (Scophthalmus maximus) and Atlantic halibut (Hippoglossus hippoglossus), 1998

Dr. Richard FitzGerald, University College Cork, Irland

The effect of different initial size distribution on the growth of Atlantic halibut (Hippoglossus hippoglossus L.), 1998

Dr. Ewa Kulczykowska, Marine Biology Center of Polish Academy of Sciences, Gdynia, Polen

Melatonin – Arginine vasotocin relationship during development of Salmo salar, 2001

EU, Improving Human Potential, Access to Research Infrastructure, Institute of Aquaculture, University of Stirling, Scotland, Contract HPRI-CT-1999-00106

Professor Niall Bromage

Endocrine regulation of growth and food intake in salmon smolts, 2000/2001

EU, FP7-KBBE-2007-2A, 222719, LIFECYCLE—Building a biological knowledge-base on fish lifecycles for competitive, sustainable European aquaculture (01.03.2009 – 28.02.2013)

Centre

Centre for research based innovation (SFI): Centre for Research-based Innovations in Controlled-environment Aquaculture (CtrlAQUA), 2015 – 2023. http://ctrlaqua.no/

 

 

Cand. scient., Institutt for fiskeribiologi, Universitetet i Bergen (UiB), 25.06.1986

Avhandling: Lysperiodens virkning på vekst og smoltifiser­ing hos laks (Salmo salar L.)

Dr. scient., Institutt for fiskeri- og marinbiologi, UiB, 10.12.1990

Avhandling: The influence of light on growth and parr-smolt trans­formation of Atlantic salmon (Salmo salar L.): Effects of spectral composition, light intensity and photoperiod