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University of Bergen
Sigurd Olav Handeland's picture

Sigurd Olav Handeland

Professor
Department of Biological Sciences (BIO)
  • E-mailsigurd.handeland@uib.no
  • Visitor Address
    Thormøhlens gate 53 A/B
    5006 Bergen
    Room 
    340A1
  • Postal Address
    Postboks 7803
    5020 Bergen
Academic article
  • Show author(s) (2024). Influence of salinity on rainbow trout (Oncorhynchus mykiss) smolt development and postsmolt performance. Aquaculture.
  • Show author(s) (2024). Freshwater history influences farmed Atlantic salmon (Salmo salar) performance in seawater. Aquaculture.
  • Show author(s) (2023). Water Flow Requirements of Post-smolt Atlantic Salmon (Salmo salar L.) Reared in Intensive Seawater Flow-through Systems: A Physiological Perspective. Fishes. 1-16.
  • Show author(s) (2023). Interaction of temperature and photoperiod on male postsmolt maturation of Atlantic salmon (Salmo salar L.). Aquaculture. 13 pages.
  • Show author(s) (2023). Interaction of temperature and feed ration on male postsmolt maturation of Atlantic salmon (Salmo salar L.). Aquaculture. 15 pages.
  • Show author(s) (2023). Impact of long-term fasting on the stomach-hypothalamus appetite regulating genes in Atlantic salmon postsmolts. Aquaculture. 10 pages.
  • Show author(s) (2023). Effect of Photoperiod and Transfer Time on Atlantic Salmon Smolt Quality and Growth in Freshwater and Seawater Aquaculture Systems. Fishes. 17 pages.
  • Show author(s) (2022). Investigation of growth performance of post-smolt Atlantic salmon (Salmo salar L.) in semi closed containment system: A big-scale benchmark study. Aquaculture Research. 4178-4189.
  • Show author(s) (2022). Constant High Temperature Promotes Early Changes in Testis Development Associated with Sexual Maturation in Male Atlantic Salmon (Salmo salar L.) Post-Smolts. Fishes.
  • Show author(s) (2022). Changes in circulating insulin-like growth factor-1 and its binding proteins in yearling rainbow trout during spring under natural and manipulated photoperiods and their relationships with gill Na+, K+-ATPase and body size. Comparative Biochemistry and Physiology A. 10 pages.
  • Show author(s) (2022). Acoustic Delicing of Atlantic Salmon (Salmo salar): Fish Welfare and Salmon Lice (Lepeophtheirus salmonis) Dynamics. Journal of Marine Science and Engineering (JMSE). 16 pages.
  • Show author(s) (2021). The effect of photoperiod manipulation on Atlantic salmon growth, smoltification and sexual maturation: A case study of a commercial RAS. Aquaculture Research. 2593-2608.
  • Show author(s) (2021). Endoplasmic reticulum stress as a key mechanism in stunted growth of seawater rainbow trout (Oncorhynchus mykiss). BMC Genomics. 1-15.
  • Show author(s) (2021). Effects of short term fasting on mRNA expression of ghrelin and the peptide transporters PepT1 and 2 in Atlantic salmon (Salmo salar). Frontiers in Physiology. 821.
  • Show author(s) (2021). A comparative study on quality, shelf life and sensory attributes of Atlantic salmon slaughtered on board slaughter vessels against traditional land-based facilities. Aquaculture. 1-9.
  • Show author(s) (2020). The Melanocortin System in Atlantic Salmon (Salmo salar L.) and Its Role in Appetite Control. Frontiers in Neuroanatomy.
  • Show author(s) (2020). Plasma proteome profiling of freshwater and seawater life stages of rainbow trout (Oncorhynchus mykiss). PLOS ONE. 1-23.
  • Show author(s) (2020). Performance and welfare of Atlantic salmon, Salmo salar L. post-smolts in recirculating aquaculture systems: Importance of salinity and water velocity. Journal of the World Aquaculture Society. 373-392.
  • Show author(s) (2019). Wound healing in post-smolt Atlantic salmon (Salmo salar L.). Scientific Reports. 1-16.
  • Show author(s) (2019). Flesh quality of Atlantic salmon smolts reared at different temperatures and photoperiods. Aquaculture Research. 1795-1801.
  • Show author(s) (2019). Effects of temperature and photoperiod on rainbow trout (Oncorhynchus mykiss) smoltification and haematopoiesis. Aquaculture.
  • Show author(s) (2019). Effects of different photoperiod regimes on the smoltification and seawater adaptation of seawater-farmed rainbow trout (Oncorhynchus mykiss): Insights from Na+, K+-ATPase activity and transcription of osmoregulation and growth regulation genes. Aquaculture. 282-292.
  • Show author(s) (2018). Water flow and diurnal variation in metabolite production rates of Atlantic salmon (Salmo salar L.) post-smolt. Aquaculture Research. 1-8.
  • Show author(s) (2018). High fish density delays wound healing in Atlantic salmon (Salmo salar). Scientific Reports. 13 pages.
  • Show author(s) (2018). Comparison between Atlantic salmon Salmo salar post-smolts reared in open sea cages and in the Preline raceway semi-closed containment aquaculture system. Journal of Fish Biology. 567-579.
  • Show author(s) (2018). Atlantic salmon skin barrier functions gradually enhance after seawater transfer. Scientific Reports.
  • Show author(s) (2017). The effect of continuous light at low temperatures on growth in Atlantic salmon reared in commercial size sea pens. Aquaculture. 645-651.
  • Show author(s) (2017). Temporal changes in infections with some pathogens associated with gill disease in farmed Atlantic salmon (Salmo salar L). Aquaculture. 126-134.
  • Show author(s) (2017). Stocking density limits for post-smolt Atlantic salmon (Salmo salar L.) emphasis on production performance and welfare. Aquaculture. 363-370.
  • Show author(s) (2017). Desmozoon lepeophtherii (microsporidian) infections and pancreas disease (PD) outbreaks in farmed Atlantic salmon (Salmo salar L.). Aquaculture. 141-148.
  • Show author(s) (2016). The effect of low temperatures and photoperiods on growth and vertebra morphometry in Atlantic salmon. Aquaculture International. 1421-1434.
  • Show author(s) (2016). Impact of fish density and specific water flow on skin properties in Atlantic salmon (Salmo salar L.) post-smolts. Aquaculture. 629-637.
  • Show author(s) (2014). Photoperiod and temperature effects on growth and maturation of pre- and post-smolt Atlantic salmon. Aquaculture International. 1331-1345.
  • Show author(s) (2014). Osmoregulation in Atlantic salmon Salmo salar smolts transferred to seawater at different temperatures. Journal of Fish Biology. 1163-1176.
  • Show author(s) (2014). Osmoregulation and growth in offspring of wild Atlantic salmon at different temperatures. Environmental Biology of Fishes. 285-296.
  • Show author(s) (2013). Physiology during smoltification in Atlantic salmon: effect of melatonin implants. Fish Physiology & Biochemistry. 1079-1088.
  • Show author(s) (2013). Low light intensity can reduce Atlantic salmon smolt quality. Aquaculture. 19-24.
  • Show author(s) (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. Journal of Fish Biology. 1197-1209.
  • Show author(s) (2013). Atlantic salmon (Salmo salar L.) smolts require more than two weeks to recover from acidic water and aluminium exposure. Aquatic Toxicology. 33-44.
  • Show author(s) (2013). Aluminum exposure impacts brain plasticity and behavior in Atlantic salmon (Salmo salar). Journal of Experimental Biology. 3148-3155.
  • Show author(s) (2011). Growth and osmoregulation in Atlantic salmon (Salmo salar ) smolts in response to different feeding frequencies and salinities. Aquaculture Research. 469-479.
  • Show author(s) (2010). The influence of first-feeding diet on the Atlantic cod Gadus morhua phenotype: survival, development and long-term consequences for growth. Journal of Fish Biology. 1-19.
  • Show author(s) (2010). Physiological effects of normbaric environmental hyperoxia on Atlantic salmon (Salmo solar L.) presmolts. Aquaculture. 28-33.
  • Show author(s) (2009). Food-deprivation, compensatory growth and hydro-mineral balance in Atlantic salmon (Salmo salar) post-smolts in sea water. Aquaculture. 243-249.
  • Show author(s) (2009). Effects of fish density on growth and smoltification in intensive production of Atlantic salmon (Salmo salar L.). Aquaculture. 236-241.
  • Show author(s) (2008). The effect of temperature and fish size on growth, feed intake, food conversion efficiency and stomach evacuation rate of Atlantic salmon post-smolts. Aquaculture. 36-42.
  • Show author(s) (2008). New clade of betanodaviruses detected in wild and farmed cod (Gadus morhua) in Norway. Archives of Virology. 541-547.
  • Show author(s) (2005). Seasonal variation in flesh quality, comparison between large and small Atlantic salmon (Salmo salar) transferred into seawater as 0+ or 1+ smolts. Aquaculture. 830-840.
  • Show author(s) (2004). Temperature influence on the development and loss of seawater tolerance in two fast-growing strains of Atlantic salmon. Aquaculture. 513-529.
  • Show author(s) (2004). Lack of long-term sublethal effects of reduced freshwater pH alone on Atlantic salmon (Salmo salar) smolts subsequently transferred to seawater. Canadian Journal of Fisheries and Aquatic Sciences. 511-518.
  • Show author(s) (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. Aquaculture. 167-187.
Report
  • Show author(s) (2022). Høringssvar – etablering av en ny ordning for tildeling av miljøteknologitillatelser. .
  • Show author(s) (2015). Sluttrapport på postsmolt D: Grenseverdier for karbondioksid for postsmolt. .
  • Show author(s) (2015). Effects on health, disease, and welfare of postsmolt production in semi-closed containment systems – Part A: Fish density tolerance and specific water use. .
  • Show author(s) (2014). Effekter på helse, sykdom og velferd ved postsmoltproduksjon i semi-lukkede anlegg-FHF 900816. Sluttrapport. .
  • Show author(s) (2006). Dyrevelferdsmessig risikovurdering av produksjon av 0-årssmolt. Uttalelse fra Faggruppe for Dyrehelse og Dyrevelferd (Dyrevern) i Vitenskapskomiteen for mattrygghet. 2006:22. 2006:22. .
  • Show author(s) (2001). Smolting and de-smolting at different temperatures in two strains of Atlantic salmon (Salmo salar L.). 10. 10. .
  • Show author(s) (2001). Effekt av utsettingstid og tilleggsbelysning på smoltkvalitet og vekst i ferskvann og sjøvann; hvilke egenskaper er best egnet til å predikere utsett av smolt? 11. 11. .
  • Show author(s) (1991). Consequences of seawater acclimation on the survival of Atlantic salmon (Salmo Salar L.) smolts in the presence of cod (Gadus morhua L.). .
Lecture
  • Show author(s) (2023). Seawater growth performance of Atlantic salmon (Salmo salar) smolts produced in a flow-through or recirculating aquaculture system. .
  • Show author(s) (2022). Sesongvariasjon av fôringsatferd, appetitt, vekst og fôrutnyttelse gjennom en produksjonssyklus av laks- tidlige livsstadier påvirker fisken helt frem til slakt.
  • Show author(s) (2022). Seasonal variation of feeding behaviour, appetite, growth and feed utilization through a salmon production cycle. .
  • Show author(s) (2021). Appetittstyrt fôring av Atlantisk laks.
  • Show author(s) (2019). INFLUENCE OF WATER TEMPERATURE AND FEEDING REGIME ON THE INCIDENCE OF EARLY SEXUAL MATURATION IN ATLANTIC SALMON (Salmo salar L.) POSTSMOLTS DURING THE FRESHWATER STAGE.
  • Show author(s) (2018). Plasma proteome during smoltification and seawater adaptation of steelhead trout (Oncorhynchus mykiss).
  • Show author(s) (2018). Plasma and liver proteome of an unwanted phenotype of seawater-transferred rainbow trout (Oncorhynchus mykiss).
  • Show author(s) (2018). Mass Spectrometry-Based Plasma Proteomics for Steelhead Trout (Oncorrhynchus mykiss) Aquaculture.
  • Show author(s) (2018). Effects of high environmental CO2 levels on Atlantic salmon post-smolts .
  • Show author(s) (2018). Changes in plasma proteome and peptidome during smoltification and seawater adaptation of steelhead trout (Oncorhynchus mykiss).
  • Show author(s) (2017). Muscle development and heart condition in Atlantic salmon (Salmo salar) post-­smolts reared in Preline S-CCS.
  • Show author(s) (2016). Evaluation of available water treatment technologies for semi-closed aquaculture systems (in Norwegian). In Abstracts RCN Program conference Mariculture 2016.
  • Show author(s) (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.
Popular scientific lecture
  • Show author(s) (2021). Tidlig modning hos postsmolt i RAS.
  • Show author(s) (2021). Produksjon av robust postsmolt i et fremtidig perspektiv. .
  • Show author(s) (2021). Potensielle utfordringer ved produksjon av laksefisk i RAS. .
  • Show author(s) (2021). Potensielle utfordringer ved produksjon av laksefisk i RAS.
  • Show author(s) (2013). Foredrag på FHF-samling Verdikjede havbruk, den 21.-22. oktober 2013: "Produksjon av laks i lukkede anlegg".
  • Show author(s) (2013). "Effekt av ulike typer lys på fisk i settefiskanlegg".
  • Show author(s) (2010). Smoltkvalitet - Er smoltkvaliteten i negativ utvikling.
Academic lecture
  • Show author(s) (2023). INFLUENCE OF A TEMPERATURE DROP FROM 15 TO 8°C BEFORE OR AFTER WINTER SIGNAL ON EARLY SEXUAL MATURATION IN ATLANTIC SALMON Salmo salar L. POSTSMOLT.
  • Show author(s) (2022). Performance of Salmo salar smolt in sulfate reduced nanofiltered water.
  • Show author(s) (2022). Effects of swimming exercise on perfomance of Atlantic salmon.
  • Show author(s) (2019). The Freshwater Institute & CtrlAQUA, Norway: A multi-year research collaboration on RAS-based Atlantic salmon production. .
  • Show author(s) (2018). Hudens utvikling og immunfunksjoner i postsmoltfasen.
  • Show author(s) (2017). The effects of photoperiod on Atlantic salmon post-smolt in freshwater closed-containment systems.
  • Show author(s) (2017). Overview of CtrlAQUA research in post-smolt welfare, performance, and water quality in commercial scale, floating, semi-closed containment systems: CtrAQUA Preline, Neptune and Eco-Cage.
  • Show author(s) (2017). My skin don't lie. .
  • Show author(s) (2016). Welfare and performance of Atlantic salmon post-smolts during exposure to mild chronic stress in recirculation aquaculture system (RAS). .
  • Show author(s) (2016). Welfare and performance of Atlantic salmon post-smolts during exposure to mild chronic stress in closed-containment systems. In Aquaculture Europe 2016 Abstracts, pp 533-534.
  • Show author(s) (2016). Semi-closed sea systems for postsmolt Atlantic salmon. (Abstract ID 42049).
  • Show author(s) (2016). Osmoregulatory changes in sexually maturing Atlantic salmon post-smolt and adults.
  • Show author(s) (2016). Androgens up-regulate freshwater ion transporters in seawater acclimated Atlantic salmon (Salmo salar).
  • Show author(s) (2015). Semi-closed sea systems for postsmolt Atlantic salmon. Conference Abstract p. 123.
  • Show author(s) (2015). Scaling of culture tanks and unit processes, relevant for Atlantic salmon post-smolt production in land-based systems. In Book of abstracts, p. 35.
  • Show author(s) (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.
  • Show author(s) (2015). Atlantic salmon post-smolts in RAS: Effects of salinity, exercise and timing of seawater transfer on performance, physiology and welfare.
  • Show author(s) (2014). The effects of increased CO2 on postsmolt Atlantic salmon Salmo salar growth, physiology and stress responsiveness.
  • Show author(s) (2014). Oppdrett av postsmolt laks i semilukkede system; Krav til fisketetthet og vannforbruk.
  • Show author(s) (2014). Effekter på helse, sykdom og velferd ved postsmoltproduksjon i semi-lukkede anlegg – del D: Grenseverdier for karbondioksid for postsmolt.
  • Show author(s) (2014). Effekter på helse sykdom og velferd ved postsmoltproduksjon i semi-lukkede anlegg – Døgnvariasjon i vannkvalitet i anlegg for postsmolt.
  • Show author(s) (2013). Postsmolt - ytelse og velferd i lukkede og semilukkede anlegg.
  • Show author(s) (2013). Effects of salinity and exercise on Atlantic salmon postsmolts reared in land-based RAS.
  • Show author(s) (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)".
  • Show author(s) (2012). Karbondioksid og vekstreduksjon hos parr.
  • Show author(s) (2007). Screening av smittestoffer i vill stamfisk.
  • Show author(s) (1993). Consequences of osmotic stress on the anti-predator behaviour and predator mortality of atlantic salmon (Salmo salar L.) postsmolts.
  • Show author(s) (1991). Consequences of seawater acclimation on the survival of Atlantic salmon (Salmo Salar L.) smolts in the presence of cod (Gadus morhua L.).
Reader opinion piece
  • Show author(s) (2014). Fremtidens oppdrettslaks er både i lukkede og åpne anlegg. Driva.
Short communication
  • Show author(s) (2015). Growth and physiological models for Atlantic salmon (Salmo salar L.) parr exposed to elevated carbon dioxide concentrations at high temperature. Aquaculture. 90-94.
Masters thesis
  • Show author(s) (2007). Effects of stocking density on smoltification and growth of Atlantic salmon (Salmo salar L.).
Popular scientific article
  • Show author(s) (2015). Utvikling av osmoreguleringssystemet hos torskelarver startfôret på rotatorier eller naturlig zooplankton. Norsk Fiskeoppdrett. 36-38.
Feature article
  • Show author(s) (2014). Skjerm laksen mot lus. Dagens næringsliv. 31.
Doctoral dissertation
  • Show author(s) (1998). Osmoregulation and growth in Atlantic salmon smolts during the early seawater phase. -.
Interview
  • Show author(s) (2017). 55 millioner til prosjekt for havbruksvekst i Hordaland.
  • Show author(s) (2016). – Dypere vann gir bedre vekstrate for postsmolt.
  • Show author(s) (2016). Mener de har løsningen på laksenæringens milliardproblem.
  • Show author(s) (2016). Lovende resultater for produksjon av laks i lukkede anlegg.
  • Show author(s) (2016). - Kontinuerlig lys gir 30 % bedre tilvekst på lave temperaturer.
  • Show author(s) (2015). Tror lukkede anlegg vil være til hjelp for oppdretterne i framtida.
  • Show author(s) (2015). Satser på histologi, rognkjeks og ny smoltanalyse.
  • Show author(s) (2015). Nytt analyseverktøy skal sikre riktig tidspunkt for smoltutsett.
  • Show author(s) (2015). Maner til innsats etter AGD-påvisning.
  • Show author(s) (2014). Nofima skal lede nytt forskningssenter for fiskeoppdrett.
  • Show author(s) (2014). Minimalt svinn i lukket forskningsanlegg.
  • Show author(s) (2014). Kan få mye å si for lusesituasjonen.
  • Show author(s) (2013). Verdas største merd skal revolusjonera fiskeindustrien.
  • Show author(s) (2012). Unngå å stresse fisken ved transport.
  • Show author(s) (2011). Dale Klekkeri blir feltlab.
Academic chapter/article/Conference paper
  • Show author(s) (2018). Effects of high environmental CO2 levels on Atlantic salmon post-smolts. 1 pages.
  • Show author(s) (2006). Vannkvalitet - laksefisk. 18 pages.
Abstract
  • Show author(s) (2019). Brain Distribution of Key Neuropeptides Involved in Appetite Control in Atlantic Salmon, Salmo Salar (L.). . The FASEB Journal. 1 pages.
Poster
  • Show author(s) (2023). Feed intake, growth and gut transit in Atlantic salmon at different temperatures- involvement of control pathways for digestion and appetite.
  • Show author(s) (2023). BODY SIZE OF MALE ATLANTIC SALMON INTERACTS WITH CHANGES IN PHOTOPERIOD UNDER AQUACULTURE CONDITIONS TO INFLUENCE THE DECISION TO MATURE OR SMOLTIFY .
  • Show author(s) (2021). Effect of water temperature and photoperiod on brain and pituitary maturation hormones during freshwater production stage of Atlantic salmon (Salmo salar L.).
  • Show author(s) (2019). The effect of temperature on stress disturbance and skin barrier functions in Atlantic salmon (Salmo salar L. ) post- smolts.
  • Show author(s) (2019). How Does Temperature Affect Primary Barrier Functions in Atlantic Salmon (Salmo Salar L.) Post-Smolts?
  • Show author(s) (2019). CtrlAQUA SFI – Contribution to Future Aquaculture.
  • Show author(s) (2019). Brain Distribution of Key Neuropeptides Involved in Appetite Control in Atlantic Salmon, Salmo Salar (L.). .
  • Show author(s) (2016). Farming intensification - impact on mental and physiological robustness of post-smolt Atlantic salmon (Salmo salar).
  • Show author(s) (2007). Increased risk of winter ulcer in intensively produced Atlantic salmon juveniles exposed to seawater.
  • Show author(s) (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.
Article in business/trade/industry journal
  • Show author(s) (2022). Dagens intensive produksjon av laks er ikke tilpasset laksens biologi. Norsk Fiskeoppdrett. 42-45.
  • Show author(s) (2014). Krav til fisketetthet og vannforbruk. Norsk Fiskeoppdrett. 42-50.
  • Show author(s) (2008). Påvirker vannkvalitet og produksjonsintensitet risiko for utvikling av vintersår hos postsmolt - Resultater fra en storskala feltstudie. Fiskehelse. 22-30.

More information in national current research information system (CRIStin)