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Ole Folkedal

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Researcher
Telephone: 90972673
Department: Dyrevelferd

Publications

Academic articles

2024

Exposed Aquaculture Operations: Strategies for Safety and Fish Welfare

Hans Vanhauwaert Bjelland, Ole Folkedal, Heidi Moe Føre, Esten Ingar Grøtli, Ingunn Marie Holmen, Eivind Lona, Hans Tobias Slette, Kristine Vedal Størkersen, Trine Thorvaldsen
Reviews in Aquaculture
2024

Post-smolt Atlantic salmon can regulate buoyancy in submerged sea-cages by gulping air bubbles

Luke T. Barrett, Lars-Thomas Unneland Larsen, Samantha Bui, Tone Vågseth, Erlend Eide, Timothy Dempster, Frode Oppedal, Ole Folkedal
Aquacultural Engineering 107
2024

Post-smolt Atlantic salmon can regulate buoyancy in submerged sea-cages by gulping air bubbles

Luke T. Barrett, Lars-Thomas Unneland Larsen, Samantha Bui, Tone Vågseth, Erlend Eide, Timothy Dempster, Frode Oppedal, Ole Folkedal
Aquacultural Engineering 107
2024

Exposed Aquaculture Operations: Strategies for Safety and Fish Welfare

Hans Vanhauwaert Bjelland, Ole Folkedal, Heidi Moe Føre, Esten Ingar Grøtli, Ingunn Marie Holmen, Eivind Lona, Kristine Vedal Størkersen, Trine Thorvaldsen
Reviews in Aquaculture
2024

Freshwater history influences farmed Atlantic salmon (Salmo salar) performance in seawater

Floriana Lai, Ivar Rønnestad, Sergei Budaev, Pablo Balseiro Vigo, Virginie Gelebart, Cindy Pinto Pedrosa, Anita Stevnebø, Erlend Haugarvoll, Øyvind Johan Korsøen, Kasper Løberg Tangen, Ole Folkedal, Sigurd Olav Handeland
Aquaculture 586
2024

Efficiency of salmon production in submerged cages with air domes matches standard surface cages when environments are similar

F. Warren-Myers, Ole Folkedal, Tone Vågseth, Lars Helge Stien, Jan Olav Fosse, Timothy David Dempster, Frode Oppedal
Aquaculture 586
2024

Behavioral and neurophysiological effects of buspirone in healthy and depression-like state juvenile salmon

Sheyda Shapouri, Aziz Sharifi, Ole Folkedal, Thomas Fraser, Marco Vindas
Frontiers in Behavioral Neuroscience 18
2023

Impact of long-term fasting on the stomach-hypothalamus appetite regulating genes in Atlantic salmon postsmolts

Tharmini Kalananthan, Ole Folkedal, Ana S. Gomes, Floriana Lai, Sigurd Olav Handeland, Ingvill Tolås, Virginie Gelebart, Ivar Rønnestad
Aquaculture 563
2023

Effect of water temperature and exposure duration on detachment rate of salmon lice (Lepeophtheirus salmonis); testing the relevant thermal spectrum used for delousing

Jonatan Nilsson, Luke T. Barrett, Anders Mangor-Jensen, Velimir Nola, Torstein Harboe, Ole Folkedal
Aquaculture 562
2023

Novel tag-based method for measuring tailbeat frequency and variations in amplitude in fish

F. Warren-Myers, Eirik Svendsen, Martin Føre, Ole Folkedal, Frode Oppedal, Malthe Hvas
Animal Biotelemetry 11
2023

Welfare effects of environmental hypercapnia quantified by indicators based on morphology and allostatic load in Atlantic salmon (Salmo salar)

Erik Höglund, Ole Folkedal, Johan Aerts, Malthe Hvas, Øyvind Øverli, Anders Mangor-Jensen, Marco A. Vindas, Jonatan Nilsson, Tore Kristiansen
Aquaculture 572
2022

Supersizing salmon farms in the coastal zone: A global analysis of changes in farm technology and location from 2005 to 2020

P. McIntosh, L.T. Barrett, F. Warren-Myers, A. Coates, G. Macaulay, A. Szetey, Nicholas Andrew Robinson, C. White, F. Samsing, Frode Oppedal, Ole Folkedal, Klebert Pascal, Timothy David Dempster
Aquaculture 553 p. 1-17
2022

Automatic length estimation of free-swimming fish using an underwater 3D range-gated camera

Petter Risholm, Ahmed Kedir Mohammed, Trine Kirkhus, Sigmund Clausen, Leonid Vasilyev, Ole Folkedal, Øistein Johnsen, Karl Henrik Haugholt, Jens T Thielemann
Aquacultural Engineering 97
2022

Deployment of hydroacoustic feeding control in salmon sea-cages; biological and technical considerations

Ole Folkedal, Gavin Macaulay, Jan Erik Fosseidengen, Gunvar Mikkelsen, Joakim Myrland, Bendik Sørensen Søvegjarto, Tom Olav Klepaker, Anders Fernø, Timothy David Dempster, Frode Oppedal, Lars Helge Stien
Aquaculture 561
2021

Thermal delousing in anaesthetised small Atlantic salmon (Salmo salar) post-smolts: A case study showing the viability of anaesthesia prior to delousing for improved welfare during treatment for salmon lice

Ole Folkedal, Stig Ove Utskot, Jonatan Nilsson
Animal Welfare 30 p. 117-120
2021

Full compensatory growth before harvest and no impact on fish welfare in Atlantic salmon after an 8-week fasting period

Malthe Hvas, Jonatan Nilsson, Tone Vågseth, Velimir Nola, Per Gunnar Fjelldal, Tom Johnny Hansen, Frode Oppedal, Lars Helge Stien, Ole Folkedal
Aquaculture 546
2021

Submerged cage aquaculture of marine fish: a review of the biological challenges and opportunities

Michael Sievers, Øyvind Johan Korsøen, Fletcher Warren-Myers, Frode Oppedal, Georgia Macauley, Ole Folkedal, Tim Dempster
Reviews in Aquaculture
2021

Full production cycle, commercial scale culture of salmon in submerged sea-cages with air domes reduces lice infestation, but creates production and welfare challenges

Fletcher Warren-Myers, Tone Vågseth, Ole Folkedal, Lars Helge Stien, Jan Olav Fosse, Tim Dempster, Frode Oppedal
Aquaculture 548
2021

What is The Limit of Sustained Swimming in Atlantic Salmon Post smolts?

Malthe Hvas, Ole Folkedal, Frode Oppedal
Aquaculture Environment Interactions 13 p. 189-198
2020

Heart rates of Atlantic salmon Salmo salar during a critical swim speed test and subsequent recovery

Malthe Hvas, Ole Folkedal, Frode Oppedal
Journal of Fish Biology
2020

Fish welfare in offshore salmon aquaculture

Malthe Hvas, Ole Folkedal, Frode Oppedal
Reviews in Aquaculture
2020

Heart rate bio-loggers as welfare indicators in Atlantic salmon (Salmo salar) aquaculture

Malthe Hvas, Ole Folkedal, Frode Oppedal
Aquaculture 529
2020

Atlantic salmon cope in submerged cages when given access to an air dome that enables fish to maintain neutral buoyancy

Frode Oppedal, Ole Folkedal, Lars Helge Stien, Tone Vågseth, Jan Olav Fosse, Tim Dempster, Fletcher Warren-Myers
Aquaculture 525 p. 1-7
2020

Genetic variation in growth pattern within a population of farmed Atlantic salmon (Salmo salar) during a standard production cycle

Ingunn Thorland, Jørn Thodesen, Terje Refstie, Ole Folkedal, Lars Helge Stien, Jonatan Nilsson, Rudi Ripman Seim, Tore S Kristiansen, Morten Rye
Aquaculture 518
2019

Welfare, behaviour and feasibility of farming Atlantic salmon in submerged cages with weekly surface access to refill their swim bladders.

Alex Glaropolous, Lars Helge Stien, Ole Folkedal, Timothy David Dempster, Frode Oppedal
Aquaculture 502 p. 332-337
2019

Sampling of Atlantic salmon Salmo salar from tanks and sea cages is size-biased

Jonatan Nilsson, Ole Folkedal
Aquaculture 502 p. 272-279
2018

Growth and welfare of submerged Atlantic salmon under continuous lighting

Michael Sievers, Øyvind Johan Korsøen, Timothy David Dempster, Per Gunnar Fjelldal, Tore S Kristiansen, Ole Folkedal, Frode Oppedal
Aquaculture Environment Interactions 10 p. 501-510
2018

Growth and welfare of submerged Atlantic salmon under continuous lightning

Michael Sievers, Øyvind Johan Korsøen, Timothy David Dempster, Per Gunnar Fjelldal, Tore S Kristiansen, Ole Folkedal, Frode Oppedal
Aquaculture Environment Interactions 10 p. 501-510
2018

Effects of acclimation temperature on cortisol and oxygen consumption in Atlantic salmon (Salmo salar) post-smolt exposed to acute stress

Angelico Madaro, Ole Folkedal, Silvia Maiolo, Marsela Alvanopoulou, Rolf Erik Olsen
Aquaculture 497 p. 331-335
2018

Documentation of multiple species of marine fish trapped in Atlantic salmon sea-cages in Norway

Per Gunnar Fjelldal, Monica Favnebøe Solberg, Kevin Glover, Ole Folkedal, Jonatan Nilsson, Roderick Nigel Finn, Tom Johnny Hansen
Aquatic Living Resources 31
2018

Metabolic rates, swimming capabilities, thermal niche and stress response of the lumpfish, cyclopterus lumpus

Malthe Hvas, Ole Folkedal, Albert Imsland, Frode Oppedal
Biology Open 7:bio036079 p. 1-9
2017

Consistent melanophore spot patterns allow long-term individual recognition of Atlantic salmon Salmo salar

Lars Helge Stien, Jonatan Nilsson, Samantha Bui, Jan Erik Fosseidengen, Tore S Kristiansen, Øyvind Øverli, Ole Folkedal
Journal of Fish Biology 91 p. 1699-1712
2017

Habituation and conditioning in gilthead sea bream (Sparus aurata): Effects of aversive stimuli, reward and social hierarchies

Ole Folkedal, Anders Fernø, Marit A. J. Nederlof, Jan Erik Fosseidengen, Marco Cerqueira, Rolf Erik Olsen, Jonatan Nilsson
Aquaculture Research 49 p. 335-340
2017

The effect of thermal acclimation on aerobic scope and critical swimming speed in Atlantic salmon Salmo salar

Malthe Hvas, Ole Folkedal, Albert Imsland, Frode Oppedal
Journal of Experimental Biology 220 p. 2757-2764
2017

Assessing swimming capacity and schooling behaviour in farmed Atlantic salmon Salmo salar with experimental push-cages

Malthe Hvas, Ole Folkedal, David Solstorm, Tone Vågseth, Jan Olav Fosse, Lars Christian Gansel, Frode Oppedal
Aquaculture 473 p. 423-429
2017

Effects of light source and intensity on sexual maturation, growth and swimming behaviour of Atlantic salmon in sea cages

Tom Johnny Hansen, Per Gunnar Fjelldal, Ole Folkedal, Tone Vågseth, Frode Oppedal
Aquaculture Environment Interactions p. 193-204
2017

Skin mucus of gilthead sea bream (sparus aurata l.). protein mapping and regulation in chronically stressed fish

Jaume Pérez-Sánchez, Genciana Terova, Paula Simó-Mirabet, Simona Rimoldi, Ole Folkedal, Josep Alvar Calduch-Giner, Rolf Erik Olsen, Ariadna Sitjà-Bobadilla
Frontiers in Physiology 8:34 p. 1-18
2016

On-farm evaluation of the Salmon Welfare Index Model (SWIM 1.0) - Theoretical and practical considerations

Ole Folkedal, Jostein Mulder Pettersen, Marc Bernardus Maria Bracke, Lars Helge Stien, Jonatan Nilsson, Catarina I.M. Martins, Olav Breck, Paul Midtlyng, Tore S Kristiansen
Animal Welfare 25 p. 135-149
2016

Brain serotonergic activation in growth-stunted farmed salmon: Adaption versus pathology

Marco Antonio Vindas, Ida Beitnes Johansen, Ole Folkedal, Erik Höglund, Marnix Gorissen, Gert Flik, Tore S Kristiansen, Øyvind Øverli
Royal Society Open Science 3
2015

Effect of temperature on the metabolism, behaviour and oxygen requirements of Sparus aurata

Mette Remen, Marit A. J. Nederlof, Ole Folkedal, Grethe Beate Thorsheim, Ariadna Sitjà-Bobadilla, Jaume Pérez-Sánchez, Frode Oppedal, Rolf Erik Olsen
Aquaculture Environment Interactions 7 p. 115-123
2014

Metabolic and transcriptional responses of gilthead sea bream (Sparus aurata L.) to environmental stress: New insights in fish mitochondrial phenotyping

A. Bermejo-Nogales, Marit Nederlof, L. Benedito-Palos, G. F. Ballester-Lozano, Ole Folkedal, Rolf Erik Olsen, A. Sitja-Bobadilla, Jaume Perez-Sanchez
General and Comparative Endocrinology 205 p. 305-315
2014

Coping with unpredictability: Dopaminergic and neurotrophic responses to omission of expected reward in Atlantic salmon (Salmo salar L.)

Marco Antonio Vindas, Christina Sørensen, Ida Beitnes Johansen, Ole Folkedal, Erik Höglund, Uniza Wahid Kahn, Lars Helge Stien, Tore S Kristiansen, Bjarne Olai Braastad, Øyvind Øverli
PLOS ONE 9
2014

Salmon welfare index model 2.0: an extended model for overall welfare assessment of caged Atlantic salmon, based on a review of selected welfare indicators and intended for fish health professionals

Jostein Mulder Pettersen, Marc Bracke, Paul Johan Midtlyng, Ole Folkedal, Lars Helge Stien, Håvard Steffenak, Tore S Kristiansen
Reviews in Aquaculture 6 p. 162-179
2013

PIT tagged individual Atlantic salmon registrered at static depth positions in a sea cage: Vertical size stratification and implications for fish sampling

Jonatan Nilsson, Ole Folkedal, Jan Erik Fosseidengen, Lars Helge Stien, Frode Oppedal
Aquacultural Engineering 55 p. 32-36
2013

Salmon Welfare Index Model (SWIM 1.0): a semantic model for overall welfare assessment of caged Atlantic salmon: review of the selected welfare indicators and model presentation

Lars Helge Stien, Marc Bracke, Ole Folkedal, Jonatan Nilsson, Frode Oppedal, Thomas Torgersen, Silje Kittilsen, Paul Johan Midtlyng, Marco Antonio Vindas Alvarado, Øyvind Øverli, Tore S Kristiansen
Reviews in Aquaculture 5 p. 33-57
2012

Sea caged Atlantic salmon display size-dependent swimming depth

Ole Folkedal, Lars Helge Stien, Jonatan Nilsson, Thomas Torgersen, Jan Erik Fosseidengen, Frode Oppedal
Aquatic Living Resources 25 p. 143-149
2012

Food anticipatory behaviour as an indicator of stress response and recovery in Atlantic salmon post-smolt after exposure to acute temperature fluctuation

Ole Folkedal, Lars Helge Stien, Thomas Torgersen, Frode Oppedal, Rolf Erik Olsen, Jan Erik Fosseidengen, Victoria Anne Braithwaite, Tore S Kristiansen
Physiology and Behavior 105 p. 350-356
2012

Duration of effects of acute environmental changes on food anticipatory behaviour, feed intake, oxygen consumption, and cortisol release in Atlantic salmon parr

Ole Folkedal, Thomas Torgersen, Rolf Erik Olsen, Anders Fernø, Jonatan Nilsson, Frode Oppedal, Lars Helge Stien, Tore S Kristiansen
Physiology and Behavior 105 p. 283-291
2012

Omission of expected reward agitates Atlantic salmon (Salmo salar)

Marco Vindas, Ole Folkedal, Tore S Kristiansen, Lars Helge Stien, Bjarne Olai Braastad, Ian Mayer, Øyvind Øverli
Animal Cognition 15 p. 903-911
2012

Skirt around a salmon sea cage to reduce infestation of salmon lice resulted in low oxygen levels

Lars Helge Stien, Jonatan Nilsson, Ernst Morten Hevrøy, Frode Oppedal, Tore S Kristiansen, Andreas Myskja Lien, Ole Folkedal
Aquacultural Engineering 51 p. 21-25
2010

Habituation rate and capacity of Atlantic salmon (Salmo salar) parr to sudden transitions from darkness to light

Ole Folkedal, Thomas Torgersen, Jonatan Nilsson, Frode Oppedal
Aquaculture 307 p. 170-172
2010

From fright to anticipation: using aversive light stimuli to investigate reward conditioning in large groups of Atlantic salmon (Salmo salar)

Silje Bratland, Lars Helge Stien, Victoria Anne Braithwaite, Jon-Erik Juell, Ole Folkedal, Jonatan Nilsson, Frode Oppedal, Jan Erik Fosseidengen, Tore S Kristiansen
Aquaculture International 18 p. 991-1001
2009

Submergence of Atlantic salmon (Salmo salar L.) in commercial scale sea-cages: A potential short-term solution to poor surface conditions

Timothy David Dempster, Øyvind Johan Korsøen, Ole Folkedal, Jon-Erik Juell, Frode Oppedal
Aquaculture 288 p. 254-263

Other journal contributions

2022

Forvirring om fisk som forsøksdyr

Ole Folkedal, Hans Vanhauwaert Bjelland, Malthe Hvas
Forskersonen.no
2022

Skremmende tall om dyreforsøk er storm i vannglass

Ole Folkedal, Malthe Hvas
www.hi.no
2022

Våre dyreforsøk skal fremme fiskevelferd

Ole Folkedal, Hans Vanhauwaert Bjelland, Malthe Hvas
Forskersonen.no
2022

Forsøksfisk for bedre dyrevelferd

Ole Folkedal, Malthe Hvas, Hans Vanhauwaert Bjelland
www.aftenbladet.no
2022

Forsøksfisk for bedre dyrevelferd

Ole Folkedal, Malthe Hvas, Hans Vanhauwaert Bjelland
an.no
2022

Skremmende tall om dyreforsøk er storm i vannglass

Hans Vanhauwaert Bjelland, Ole Folkedal, Malthe Hvas
www.adressa.no
2020

Må bli flinkere på datainnsamling og standardisere

Folkedal, Ole
Kyst.no

Scientific lectures

2024

Standard operasjonsprosedyre (SOP) for validering av automatisk lusetelling (AutoSOP)

Ole Folkedal, Luke Barrett, Ingar Stian Nerbø, Velimir Nola, Samantha Bui
2024

Erfaringer med FoU-tillatelser og FHF prosjekter

Ole Folkedal, Lars Helge Stien, Frode Oppedal
2024

Vekst og velferd

Folkedal, Ole
2024

AutoSOP – Utvikling av referansestandard for automatisk lusetelling

Ole Folkedal, Ingar Stian Nerbø, Velimir Nola, Luke Barrett, Frode Oppedal, Samantha Bui
2023

Seawater growth performance of Atlantic salmon (Salmo salar) smolts produced in a flow-through or recirculating aquaculture system.

Floriana Lai, Ivar Rønnestad, Sergei Budaev, Pablo Balseiro Vigo, Virginie Gelebart, Cindy Pedrosa, Anita Stevnebø, Erlend Haugarvoll, Ole Folkedal, Sigurd Olav Handeland
2023

Seawater growth performance of Atlantic salmon (Salmo salar) smolts produced in a flow-through or recirculating aquaculture system.

Floriana Lai, Ivar Rønnestad, Sergei Budaev, Pablo Balseiro, Virginie Gelebart, Cindy Pedrosa, Anita Stevnebø, Erlend Haugarvoll, Ole Folkedal, Sigurd Olav Handeland
2023

Biological premises for salmon offshore farming

Frode Oppedal, Malthe Hvas, Ole Folkedal
2023

Fiskevelferds-forskning på sjøanleggene

Ole Folkedal, Frode Oppedal
2023

Interactions between the salmon and their sea cage rearing environment

Ole Folkedal, Frode Oppedal
2023

Risiko for dødelighet hos oppdrettslaks i sjøfasen

Ole Folkedal, Lars Helge Stien
2023

Fiskens mestringsevne for eksponerte forhold

Ole Folkedal, Malthe Hvas, Frode Oppedal
2022

Seasonal variation of feeding behaviour, appetite, growth and feed utilization through a salmon production cycle.

Floriana Lai, Sigurd Olav Handeland, Pablo Balseiro Vigo, Ole Folkedal, Øyvind Korsøen, Erlend Haugarvoll, Anita Stevnebø, Ivar Rønnestad
2022

Sesongvariasjon av fôringsatferd, appetitt, vekst og fôrutnyttelse gjennom en produksjonssyklus av laks- tidlige livsstadier påvirker fisken helt frem til slakt

Floriana Lai, Sigurd Olav Handeland, Pablo Balseiro Vigo, Ole Folkedal, Øyvind Korsøen, Erlend Haugarvoll, Anita Stevnebø, Ivar Rønnestad
2022

Nedsenkning av laks med luftkuppel fra forsøk til kommersiell drift

Frode Oppedal, Ole Folkedal, Fletcher Warren-Myers, Tim Dempster, Lars Helge Stien
2022

Hva nå? Eksponert oppdrett fra et biologisk standpunkt

Frode Oppedal, Ole Folkedal, Malthe Hvas
2022

Fordeler og ulemper med nedsenket lakseoppdrett

Ole Folkedal, Frode Oppedal
2022

Echofeeding

Ole Folkedal, Jan Erik Fosseidengen, Lars Helge Stien, Frode Oppedal
2022

Sesongvariasjon av fôringsatferd, appetitt, vekst og fôrutnyttelse gjennom en produksjonssyklus av laks- tidlige livsstadier påvirker fisken helt frem til slakt

Floriana Lai, Sigurd Olav Handeland, Pablo Balseiro, Ole Folkedal, Øyvind Korsøen, Erlend Haugarvoll, Anita Stevnebø, Ivar Rønnestad
2022

Fish welfare in new aquaculture contexts – challenges for and contributions from marine technology

Frode Oppedal, Malthe Hvas, Ole Folkedal
2021

Vekst er mer enn kilo og gram

Ole Folkedal, Lars Helge Stien, Frode Oppedal, Malthe Hvas, Jonatan Nilsson
2021

Fish welfare in exposed farming

Ole Folkedal, Malthe Hvas, Frode Oppedal
2021

Fish welfare implications of prolonged fasting periods in Atlantic salmon

Malthe Hvas, Ole Folkedal, Frode Oppedal, Lars Helge Stien
2021

Kunnskap og teknologi i eksponert oppdrett. Effekter og behov sett fra forskningsområdene

Esten Ingar Grøtli, Jan Tore Fagertun, Heidi Moe Føre, Ørjan Selvik, Trine Thorvaldsen, Ole Folkedal
2021

Behovene i eksponert oppdrett. Hvilke resultater har vi, hva blir utfordringene fremover og hvordan kan vi løse dem?

Ole Folkedal, Trine Thorvaldsen, Ørjan Selvik, Heidi Moe Føre, Jan Tore Fagertun, Esten Ingar Grøtli
2021

Laksens tålegrenser for havbruk til havs

Frode Oppedal, Malthe Hvas, Ole Folkedal
2021

Hvor mye vannstrøm tåler laks og rensefisk

Frode Oppedal, Ole Folkedal, Malthe Hvas
2020

AI i oppdrett - Er biologisk kunnskap og praktiske hensyn ivaretatt?

Ole Folkedal, Jonatan Nilsson
2020

Merdmiljø og rensefisk – forskningsresultater og analyser

Frode Oppedal, Luke Barrett, Kathy Overton, Tim Dempster, Malthe Hvas, Jeffrey William Yuen, Lena Geitung, Daniel William Wright, Lars Helge Stien, Ole Folkedal
2019

Group size in fish studies matters - how many extra fish do you need?

Jonatan Nilsson, Jan Erik Fosseidengen, Ole Folkedal
2019

Ekkolodd, et viktig verkøty i fremtidens oppdrett

Folkedal, Ole
2019

Use of Copernicus data in present and future aquaculture?

Folkedal, Ole
2019

Varige effekter av forbedret hjertehelse hos laksesmolt

Ole Folkedal, Ida Beitnes Johansen
2019

Kan fiskevelferd sikres langt til havs?

Malthe Hvas, Ole Folkedal, Frode Oppedal
2018

Feasibility of reducing lice infestations on farmed salmon using an airdome for swim bladder refilling during continuous submergence.

Frode Oppedal, Ole Folkedal, Jonatan Nilsson, Lars Helge Stien, Timothy David Dempster, Jan Olav Fosse, Tone Vågseth
2018

Fôringsstrategi og Echofeeding

Folkedal, Ole
2018

The use of swim tunnel studies in defining environmental thresholds for Atlantic salmon and cleanerfish in exposed Aquaculture

Malthe Hvas, Ole Folkedal, Frode Oppedal
2018

Bruk av undervanns luftkuppel for oppdrett av laks i nedsenkte merder

Frode Oppedal, Ole Folkedal, Jonatan Nilsson, Lars Helge Stien, Timothy David Dempster, Tone Vågseth
2017

Hvilke velferdsindikatorer skal brukes i ulike anleggskonsepter for lakseoppdrett?

Kristoffer Vale Nielsen, Chris Noble, Kristine Gismervik, Cecilie Marie Mejdell, Jonatan Nilsson, Jelena Kolarevic, Lars Helge Stien, Martin Haugmo Iversen, James F. Turnbull, Bjørn-Steinar Sæther, Åsa Maria Olofsdotter Espmark, Kjell Øyvind Midling, David Izquierdo-Gomez, Tore S Kristiansen, Thomas Torgersen, Frode Oppedal, Ole Folkedal, Malthe Hvas, Daniel William Wright, Kristian Ellingsen
2017

La laksen fôre "seg selv"!

Ole Folkedal, Gunvar Mikkelsen, Jan Erik Fosseidengen, Velimir Nola, Jonatan Nilsson, Anders Fernö, Timothy David Dempster, Lars Helge Stien, Frode Oppedal
2017

Vekst hos laksesøsken

Ole Folkedal, Lars Helge Stien, Jonatan Nilsson, Thomas Torgersen, Tore S Kristiansen
2017

DO DIFFERENT GENES CONTROL SUMMER AND WINTER GROWTH IN ATLANTIC SALMON (Salmo salar)?

Ingunn Thorland, Jørn Thodesen, Terje Refstie, Ole Folkedal, Rudi Ripman Seim, Morten Rye
2017

SAMPLING OF ALTANTIC SALMON (Salmo salar) FROM TANKS AND SEA CAGES IS SIZE-BIASED

Jonatan Nilsson, Ole Folkedal
2017

Thresholds for hypoxia and water current in salmon production

Frode Oppedal, Malthe Hvas, Frida Solstorm, David Solstorm, Tina Oldham, Ole Folkedal, Lars Helge Stien
2017

Velferdsindikatorer for laks og regnbueørret (FISHWELL)

Jonatan Nilsson, Lars Helge Stien, Tore S Kristiansen, Ole Folkedal, Frode Oppedal, Thomas Torgersen, Malthe Hvas, Daniel W Wrigth, Chris Noble, Jelena Kolarevic, Kristine Gismervik, James F. Turnbull
2016

Premisser for merdteknologi – lytter vi til "brukerens" krav til vannstrøm for god vekst og velferd på eksponerte lokaliteter?

Ole Folkedal, Malthe Hvas, David Solstorm, Frida Solstorm, Mette Remen, Frode Oppedal
2016

Er atferd hos oppdrettslaks familieavhengig?

Ole Folkedal, Lars Helge Stien, Jonatan Nilsson, Thomas Torgersen, Jan Erik Fosseidengen, Rolf Edvardsen, Tore S Kristiansen
2016

Hva er akseptabel vannstrøm for laks i merder?

Frode Oppedal, David Solstorm, Frida Solstorm, Mette Remen, Malthe Hvas, Ole Folkedal
2016

Passe store grupper: Balanse mellom Reduction og Refinement i forsøk med laks

Jonatan Nilsson, Jan Erik Fosseidengen, Ole Folkedal
2015

Fôring og fødemotivasjon sin påvirkning av svømmedyp.

Folkedal, Ole
2014

Svakt lys holder laksen dypt, sterkt lys gir best vekst.

Frode Oppedal, Tom Johnny Hansen, Per Gunnar Fjelldal, Ole Folkedal, Morten Malm, Harald Sveier, Thomas Torgersen, Lars Helge Stien
2014

Use of artificial light (LL) to prevent sexual maturation and increase growth in salmon sea cages.

Frode Oppedal, Per Gunnar Fjelldal, Tom Johnny Hansen, Thomas Torgersen, Ole Folkedal
2014

Hypoksi i lakseoppdrett - Praktiske konsekvenser.

Frode Oppedal, Ole Folkedal, Lars Helge Stien, Thomas Torgersen, David Johansson, Rolf Erik Olsen, Mette Remen
2014

Use of artificial light (LL) to prevent sexual maturation and increase growth in salmon sea cages.

Frode Oppedal, Per Gunnar Fjelldal, Tom Johnny Hansen, Thomas Torgersen, Ole Folkedal
2014

Responses of caged salmon to farm environment.

Frode Oppedal, David Johansson, Frida Maria Laursen, Mette Remen, Ole Folkedal, Jonatan Nilsson, Lars Gansel, Øyvind Johan Korsøen, Timothy David Dempster, Lars Helge Stien
2012

Effects of omission of expected reward on agonistic behaviour and dopaminergic activity of Atlantic salmon (Salmo salar)

Marco Antonio Vindas Alvarado, Ole Folkedal, Tore S Kristiansen, Lars Helge Stien, Bjarne Olai Braastad, Ian Mayer, Erik Höglund, Øyvind Øverli
2012

Frustrert fisk: Uforutsigbar utforing av laks gir økt aggresjon og påvirker hjernens belønnings-system

Marco Antonio Vindas, Ole Folkedal, Ida Beitnes Johansen, Tore S Kristiansen, Lars Helge Stien, Bjarne Olai Braastad, Ian Mayer, Erik Höglund, Øyvind Øverli
2011

SWIM - Salmon welfare index model

Tore S Kristiansen, Lars Helge Stien, Marc Bracke, Ole Folkedal, Anders Kiessling, Silje Kittilsen, Paul Johan Midtlyng, Jonatan Nilsson, Frode Oppedal, Øyvind Øverli
2011

Overall Welfare Assessment of Atlantic Salmon in Sea Cages - SWIM 1.0

Lars Helge Stien, Marc Bracke, Ole Folkedal, Silje Kittilsen, Paul Johan Midtlyng, Jonatan Nilsson, Frode Oppedal, Thomas Torgersen, Øyvind Øverli, Tore S Kristiansen

Poster

2021

Submerged salmon production reduced lice infestation but deep environmental challenges occurred

Frode Oppedal, Fletcher Warren-Myers, Tone Vågseth, Ole Folkedal, Timothy Dempster, Jan Olav Fosse
2017

ARE SWIMMING DEPTH PREFERENCES IN FARMED ATLANTIC SALMON GENETICALLY DEPENDENT?

Ole Folkedal, Lars Helge Stien, Ingunn Thorland, Rudi Ripman Seim, Roy Hjelmeland, Thomas Torgersen, Jonatan Nilsson, Rolf Edvardsen, Morten Rye, Håvard Bakke, Øyvind Øverli, Tore S Kristiansen
2012

Topical delousing in sea cages – salmon behaviour, water movements and therapeutant mixing

Frode Oppedal, Tone Vågseth, Klebert Pascal, Erik Høy, Lars Helge Stien, Ole Folkedal
2012

Omission of expected reward sensitizes the brain dopaminergic system of classically conditioned Atlantic salmon

Marco Antonio Vindas, Erik Höglund, Ole Folkedal, Ida Beitnes Johansen, Bjarne Olai Braastad, Lars Helge Stien, Tore S Kristiansen, Øyvind Øverli

Reports and dissertations

2024

Safe, robust, and productive Exposed Aquaculture Operations - Challenges and solutions

Hans Vanhauwaert Bjelland, Kristine Vedal Størkersen, Heidi Moe Føre, Trine Thorvaldsen, Ole Folkedal, Ingunn Marie Holmen, Eivind Lona, Esten Ingar Grøtli, Ørjan Selvik, Jan Tore Fagertun, Per Christian Endresen, Sveinung Johan Ohrem, Hans Tobias Slette, Martin Gutsch, Bjørn Magnus Mathisen, Malthe Hvas, Pascal Klebert
2024

Safe, robust, and productive Exposed Aquaculture Operations - Challenges and solutions

Hans Vanhauwaert Bjelland, Kristine Vedal Størkersen, Heidi Moe Føre, Trine Thorvaldsen, Ole Folkedal, Ingunn Marie Holmen, Eivind Lona, Esten Ingar Grøtli, Ørjan Selvik, Jan Tore Fagertun, Per Christian Endresen, Sveinung Johan Ohrem, Hans Tobias Slette, Martin Gutsch, Bjørn Magnus Mathisen, Malthe Hvas, Klebert Pascal
2024

Risikorapport norsk fiskeoppdrett 2024 - Produksjonsdødelighet hos oppdrettsfisk og miljøeffekter av norsk fiskeoppdrett

Ellen Sofie Grefsrud, Ann-Lisbeth Agnalt, Lasse Berg Andersen, Ola Håvard Diserud, Katherine Mary Dunlop, Rosa Escobar, Peder Fiske, Ole Folkedal, Kevin Alan Glover, Bjørn Einar Grøsvik, Kim Aleksander Tallaksen Halvorsen, Rita Hannisdal, Pia Kupka Hansen, Kjetil Hindar, Vivian Husa, Eeva Jansson, Ingrid Askeland Johnsen, Ørjan Karlsen, Sten Karlsson, Abdullah Sami Madhun, Kjell Harald Nedreaas, Jonatan Nilsson, Aoife Elizabeth Parsons, Ole Samuelsen, Nina Sandlund, Anne Dagrun Sandvik, Rosa Maria Serra Llinares, Øystein Skaala, Rasmus Skern-Mauritzen, Anne Berit Skiftesvik, Monica Favnebøe Solberg, Lars Helge Stien, Elisabeth Stöger, Terje Svåsand, Kjell Rong Utne, Vidar Wennevik
Rapport fra havforskningen
2019

Havbasert oppdrett – hvor mye vannstrøm tåler laks og rensefisk? - fiskevelferd og grenseverdier

Malthe Hvas, Ole Folkedal, Frode Oppedal
2019

Physiology and welfare of Atlantic salmon and cleaner fish in exposed aquaculture

Malthe Hvas, Frode Oppedal, Ole Folkedal, Albert Imsland
2006

Effects of group size and light regime on swimming depth and social interactions of individual Atlantic salmon (Salmo salar L.) in a sea cage

Ole Folkedal, Anders Fernø
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