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Lars Helge Stien

lars
Head of Research/ Research Manager
Telephone: 91243951
Department: Dyrevelferd

Publications

Academic articles

2023

Comparison of non-medicinal delousing strategies for parasite (Lepeophtheirus salmonis) removal efficacy and welfare impact on Atlantic salmon (Salmo salar) hosts

Cameron Thompson, Angelico Madaro, Jonatan Nilsson, Lars Helge Stien, Frode Oppedal, Øyvind Øverli, Wayne J. Korzan, Samantha Bui
Aquaculture International
2022

Warm water treatment increased mortality risk in salmon

Samantha Bui, Angelico Madaro, Jonatan Nilsson, Per Gunnar Fjelldal, Martin Haugmo Iversen, Monica Fengsrud Brinchmann, Birger Venås, Merete Bjørgan Schrøder, Lars Helge Stien
Veterinary and Animal Science 17
2022

Declining size-at-harvest in Norwegian salmon aquaculture: Lice, disease, and the role of stunboats

LukeT. Barrett, Tina Marie Wier Oldham, Trond Kristiansen, Frode Oppedal, Lars Helge Stien
Aquaculture 559
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
2022

Thaw rigor in Atlantic salmon (Salmo salar) fillets, as affected by thawing rate and frozen storage time

Bjørn Tore Rotabakk, Lars Helge Stien, Torstein Skåra
Lebensmittel-Wissenschaft + Technologie 167 p. 1-7
2022

Increasing Dip Net Mesh Size Results in More Fin Splits in Post-Smolt Atlantic Salmon (Salmo salar)

Lene Moltumyr, Lars Helge Stien, Angelico Madaro, Jonatan Nilsson
Journal of Applied Animal Welfare Science
2022

Acute stress response on Atlantic salmon: a time-course study of the effects on plasma metabolites, mucus cortisol levels, and head kidney transcriptome profile

Angelico Madaro, Jonatan Nilsson, Paul Whatmore, HyeongJin Roh, Søren Grove, Lars Helge Stien, Rolf Erik Olsen
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

A comparison of triploid and diploid Atlantic salmon (Salmo salar) performance and welfare under commercial farming conditions in Norway

Angelico Madaro, Sissel Kjøglum, Tom Johnny Hansen, Per Gunnar Fjelldal, Lars Helge Stien
Journal of Applied Aquaculture
2021

Triploidy leads to a mismatch of smoltification biomarkers in the gill and differences in the optimal salinity for post-smolt growth in Atlantic salmon

Raneesha de Fonseka, Per Gunnar Fjelldal, Florian Sambraus, Tom Ole Nilsen, Sofie C. Remø, Lars Helge Stien, Helena Reinardy, Angelico Madaro, Tom Johnny Hansen, Thomas Fraser
Aquaculture 546
2021

Long-term welfare effects of repeated warm water treatments on Atlantic salmon (Salmo salar)

Lene Moltumyr, Jonatan Nilsson, Angelico Madaro, Tore Seternes, Fredrik Agerup Winger, Ivar Rønnestad, Lars Helge Stien
Aquaculture 548
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

Minding the Gaps in Fish Welfare: The Untapped Potential of Fish Farm Workers

Christian Medaas, Marianne Elisabeth Lien, Kristine Gismervik, Tore S. Kristiansen, Tonje Osmundsen, Kristine Vedal Størkersen, Brit Tørud, Lars Helge Stien
Journal of Agricultural and Environmental Ethics 34 p. 1-22
2021

The effect of fasting period on swimming performance, blood parameters and stress recovery in Atlantic salmon post molts

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

The effect of fasting period on swimming performance, blood parameters and stress recovery in Atlantic salmon post smolts

Malthe Hvas, Lars Helge Stien, Frode Oppedal
Comparative Biochemistry and Physiology A 255
2021

Farmed salmonids drive the abundance, ecology and evolution of parasitic salmon lice in Norway

Tim Dempster, Kathy Overton, Samantha Bui, Lars Helge Stien, Frode Oppedal, Ørjan Karlsen, Andrew Coates, B. L. Phillips, Luke T. Barrett
Aquaculture Environment Interactions 13 p. 237-248
2021

Tapeworm (Eubothrium sp.) infestation in sea caged Atlantic salmon decreased by lice barrier snorkels during a commercial-scale study

Lena Geitung, Daniel William Wright, Lars Helge Stien, Frode Oppedal, Egil Erlingsson Karlsbakk
Aquaculture 541 p. 1-7
2021

Fish protection during fish production. Organizational conditions for fish welfare

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Lars Helge Stien, Christian Medaas, Marianne Elisabeth Lien, Brit Tørud, Tore S Kristiansen, Kristine Gismervik
Marine Policy 129
2020

Triploid Atlantic salmon Salmo salar have a higher dietary phosphorus requirement for bone mineralization during early development

Florian Sambraus, Tom Johnny Hansen, Britt Sværen Daae, Anders Thorsen, Roar Sandvik, Lars Helge Stien, Thomas Fraser, Per Gunnar Fjelldal
Journal of Fish Biology 97 p. 137-147
2020

Does the thermal component of warm water treatment inflict acute lesions on Atlantic salmon (Salmo salar)?

Lene Moltumyr, Kristine Gismervik, Jinni Gu, Siri Kristine Gåsnes, Tore S Kristiansen, Ivar Rønnestad, Jonatan Nilsson, Lars Helge Stien
Aquaculture
2020

Skeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture

Per Gunnar Fjelldal, Angelico Madaro, Malthe Hvas, Lars Helge Stien, Frode Oppedal, Thomas Fraser
Journal of Fish Biology p. 1-10
2020

Is it advantageous for Atlantic salmon to be triploid at lower temperatures?

Erling Nilsen Riseth, Thomas Fraser, Florian Sambraus, Lars Helge Stien, Malthe Hvas
Journal of Thermal Biology 89
2020

Effect of cleaner fish on sea lice in Norwegian salmon aquaculture: a national scale data analysis

Luke T. Barrett, Kathy Overton, Lars Helge Stien, Frode Oppedal, Tim Dempster
International Journal of Parasitology 50 p. 787-796
2020

The effect of temperature on ability of Lepeophtheirus salmonis to infect and persist on Atlantic salmon (Salmo salar)

Sussie Dalvin, Lars Are Hamre, Rasmus Skern-Mauritzen, Tone Vågseth, Lars Helge Stien, Frode Oppedal, Samantha Bui
Journal of Fish Diseases 43 p. 1519-1529
2020

The effect of temperature on ability of Lepeophtheirus salmonis to infect and persist on Atlantic salmon

Sussie Dalvin, Lars Are Hamre, Rasmus Skern-Mauritzen, Tone Vågseth, Lars Helge Stien, Frode Oppedal, Samantha Bui
Journal of Fish Diseases 43 p. 1519-1529
2020

Efficiency and welfare impact of long-term simultaneous in situ management strategies for salmon louse reduction in commercial sea cages

Samantha Bui, Jonatan Nilsson, Lars Helge Stien, Henrik Trengereid, Frode Oppedal
Aquaculture 520
2020

Cleaner fish growth, welfare and survival in Atlantic salmon sea cages during an autumn-winter production

Lena Geitung, Daniel William Wright, Frode Oppedal, Lars Helge Stien, Tone Vågseth, Angelico Madaro
Aquaculture 528 p. 1-10
2020

Comparison of Norwegian health and welfare regulatory frameworks in salmon and chicken production

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Christian Medaas, Marianne Elisabeth Lien, Lars Helge Stien
Reviews in Aquaculture p. 1-15
2020

The metabolic rate response to feed withdrawal in Atlantic salmon post-smolts

Malthe Hvas, Lars Helge Stien, Frode Oppedal
Aquaculture 529
2020

Optimal estimation of lice release from aquaculture based on ambient temperatures

Ingrid A. Johnsen, Lars Helge Stien, Anne Dagrun Sandvik, Lars Asplin, Frode Oppedal
Aquaculture Environment Interactions 12 p. 179-191
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

Governing the welfare of Norwegian farmed salmon: three conflict cases

Lars Helge Stien, Brit Tørud, Kristine Gismervik, Marianne Elisabeth Lien, Christian Medaas, Tonje Cecilie Osmundsen, Tore S Kristiansen, Kristine Vedal Størkersen
Marine Policy 117
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

Snorkel Technology to Reduce Sea Lice Infestations: Efficacy Depends on Salinity at the Farm Site, but Snorkels Have Minimal Effects on Salmon Production and Welfare

Frode Oppedal, Samantha Bui, Kathy Overton, Lars Helge Stien, Timothy David Dempster
Aquaculture Environment Interactions 11 p. 445-457
2019

Differential effects of internal tagging depending on depth treatment in Atlantic salmon: a cautionary tale for aquatic animal tag use.

Daniel William Wright, Lars Helge Stien, Timothy David Dempster, Frode Oppedal
Current Zoology 65 p. 665-673
2019

Thermal injuries in Atlantic salmon in a pilot Laboratory trial

Kristine Gismervik, Siri Kristine Gåsnes, Jinni Gu, Lars Helge Stien, Angelico Madaro, Jonatan Nilsson
Veterinary and Animal Science 8 p. 1-8
2019

Sudden exposure to warm water causes instant behavioural responses indicative of nociception or pain in Atlantic salmon

Jonatan Nilsson, Lene Moltumyr, Angelico Madaro, Tore S Kristiansen, Siri Kristine Gåsnes, Cecilie Marie Mejdell, Kristine Gismervik, Lars Helge Stien
Veterinary and Animal Science 8 p. 1-8
2019

Snorkel sea-cage technology decreases salmon louse infestation by 75% in a full-cycle commercial test

Lena Geitung, Frode Oppedal, Lars Helge Stien, Timothy David Dempster, Egil Karlsbakk, Velimir Nola, Daniel William Wright
International Journal of Parasitology 49 p. 843-846
2019

Snorkel technology to reduce sea lice infestations: efficacy depends on salinity at the farm site, but snorkels have minimal effects on salmon production and welfare

Frode Oppedal, Samantha Bui, Kathy Overton, Lars Helge Stien, Timothy David Dempster
Aquaculture Environment Interactions 11 p. 445-457
2019

Automatic segmentation method for live fish eggs microscopic image analysis

Yane Duan, Daoliang Li, Lars Helge Stien, Zetian Fu, Daniel William Wright, Yongping Gao
Aquacultural Engineering 85 p. 49-55
2019

Thermal delousing with cold water: Effects on salmon lice removal and salmon welfare

Kathy Overton, Frode Oppedal, Lars Helge Stien, Lene Moltumyr, Daniel William Wright, Tim Dempster
Aquaculture 505 p. 41-46
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
2018

Salmon lice treatments and salmon mortality in Norwegian aquaculture: a review

Kathy Overton, Tim Dempster, Frode Oppedal, Tore S Kristiansen, Kristine Gismervik, Lars Helge Stien
Reviews in Aquaculture p. 1-20
2018

Repeated sublethal freshwater exposures reduce the amoebic gill disease parasite, Neoparamoeba perurans, on Atlantic salmon

Daniel William Wright, Barbara Nowak, Frode Oppedal, Phil Crosbie, Lars Helge Stien, Tim Dempster
Journal of Fish Diseases 41 p. 1403-1410
2018

Surface environment modification in Atlantic salmon sea-cages: Effects on amoebic gill disease, salmon lice, growth and welfare

Daniel William Wright, Lena Geitung, Egil Karlsbakk, Lars Helge Stien, Timothy David Dempster, Tina Oldham, Velimir Nola, Frode Oppedal
Aquaculture Environment Interactions 10 p. 255-265
2018

Skirts on salmon production cages reduced salmon lice infestations without affecting fish welfare

Lars Helge Stien, Mattias Bendiksen Lind, Frode Oppedal, Daniel William Wright, Tore Seternes
Aquaculture 490 p. 281-287
2018

Dissolved oxygen variability in a commercial sea-cage exposes farmed Atlantic salmon to growth limiting conditions

David Solstorm, Tina Oldham, Frida Solstorm, Klebert Pascal, Lars Helge Stien, Tone Vågseth, Frode Oppedal
Aquaculture 486 p. 122-129
2018

Functional amino acids stimulate muscle development and improve fillet texture of Atlantic salmon

Tone-Kari K Østbye, Bente Ruyter, Inger Beate Standal, Lars Helge Stien, Diane Bahuaud, Jens-Erik Dessen, Muhammad Saqib Latif, Bendik Fyhn Terjesen, Kjell-Arne Rørvik, Turid Mørkøre
Aquaculture Nutrition 24 p. 14-26
2017

Lowering treatment temperature reduces salmon mortality: a new way to treat with hydrogen peroxide in aquaculture.

Kathy Overton, Fransisca Samsing, Frode Oppedal, Lars Helge Stien, Timothy David Dempster
Pest Management Science 74 p. 535-540
2017

The use and effects of hydrogen peroxide on salmon lice and post-smolt Atlantic salmon.

Kathy Overton, Francisca Samsing, Frode Oppedal, Lars Helge Stien, Sussie Dalvin, Timothy David Dempster
Aquaculture 486 p. 246-252
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

`Snorkel? lice barrier technology reduced two co- occurring parasites, the salmon louse (Lepeophtheirus salmonis) and the amoebic gill disease causing agent (Neoparamoeba perurans), in commercial salmon sea-cages

Daniel William Wright, Lars Helge Stien, Timothy David Dempster, Tone Vågseth, Velemir Nola, Jan Erik Fosseidengen, Frode Oppedal
Preventive Veterinary Medicine 140 p. 97-105
2017

Sea lice infestation levels decrease with deeper ‘snorkel’ barriers in Atlantic salmon sea-cages

Frode Oppedal, Francisca Samsing, Timothy David Dempster, Daniel William Wright, Samantha Bui, Lars Helge Stien
Pest Management Science 73 p. 1935-1943
2016

Sea lice infestation level alters salmon swimming depth in sea-cages

Samantha Bui, Frode Oppedal, Lars Helge Stien, Timothy David Dempster
Aquaculture Environment Interactions 8 p. 429-435
2016

Distinguishing Arctic charr with different stress coping styles by visual screening of spottiness ? reliability and consistency over time

Eva Brännäs, Tobias Backström, Jan Erik Nilsson, Hanna Carlberg, Lars Helge Stien, Carin Magnhagen
Journal of Zoology 300 p. 213-220
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

Predicting the effectiveness of depth-based technologies to prevent salmon lice infection using a dispersal model

Francisca Samsing, Ingrid Askeland Johnsen, Lars Helge Stien, Frode Oppedal, Jon Albretsen, Lars Asplin, Timothy David Dempster
Preventive Veterinary Medicine 129 p. 48-57
2016

Effects of age and rearing environment on genetic parameters of growth and body weight and heritability of skin pigmentation in Arctic charr (Salvelinus alpinus L.)

J. Nilsson, T. Bäckström, Lars Helge Stien, H. Carlberg, Henrik Jeuthe, C. Magnhagen, E. Brännäs
Aquaculture 453 p. 67-72
2016

'Snorkel' sea lice barrier technology reduces sea lice loads on harvest-sized Atlantic salmon with minimal welfare impacts

Lars Helge Stien, Timothy David Dempster, Samantha Bui, Alexis Glaropoulos, Jan Erik Fosseidengen, Daniel W. Wright, Frode Oppedal
Aquaculture 458 p. 29-37
2016

Not too slow, not too fast: water currents affect group structure, aggression and welfare in postsmolt Atlantic salmon Salmo salar

Frida Solstorm, David Solstorm, Frode Oppedal, Rolf Erik Olsen, Lars Helge Stien, Anders Fernø
Aquaculture Environment Interactions 8 p. 339-347
2015

Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages

Daniel William Wright, Alexis Glaropoulos, David Solstorm, Lars Helge Stien, Frode Oppedal
Aquaculture Environment Interactions 7 p. 61-65
2015

An automatic counting system for transparent pelagic fish eggs based on computer vision

Yane Duan, Lars Helge Stien, Anders Thorsen, Ørjan Karlsen, Nina Sandlund, Daoliang Li, Zetian Fu, Sonnich Meier
Aquacultural Engineering 67 p. 8-13
2015

Effect of water oxygen level on performance of diploid and triploid Atlantic salmon post-smolts reared at high temperature

Tom Johnny Hansen, Rolf Erik Olsen, Lars Helge Stien, Frode Oppedal, Thomas Torgersen, Olav Breck, Mette Remen, Tone Vågseth, Per Gunnar Fjelldal
Aquaculture 435 p. 354-360
2015

Effects of filleting method, stress, storage and season on the quality of farmed Atlantic cod (Gadus morhua L.)

Gaute Jørpeland, Albert Imsland, Lars Helge Stien, Hogne Bleie, Bjørn Roth
Aquaculture Research 46 p. 1597-1607
2014

The effect of stunning methods and season on muscle texture hardness in Atlantic salmon (Salmo salar L.)

Grigory Merkin, Lars Helge Stien, Karin Pittman, Ragnar Nortvedt
Journal of Food Science 79 p. E1137-E1141
2014

Low intensity light of different colours modifies Atlantic salmon depth use

Lars Helge Stien, Jan Erik Fosseidengen, Morten E. Malm, Harald Sveier, Thomas Torgersen, Daniel William Wright, Frode Oppedal
Aquacultural Engineering 62 p. 42-48
2014

The interaction between water currents and salmon swimming behaviour in sea cages

David Johansson, Frida Maria Laursen, Anders Fernø, Jan Erik Fosseidengen, Klebert Pascal, Lars Helge Stien, Tone Vågseth, Frode Oppedal
PLOS ONE 9
2014

Effect of blood removal protocol and superchilling on quality parameters of prerigor filleted farmed atlantic cod (Gadus morhua)

Bjørn Tore Rotabakk, Hogne Bleie, Lars Helge Stien, Bjørn Roth
Journal of Food Science 79 p. E881-E886
2014

Manipulation of farmed Atlantic salmon swimming behaviour through the adjustment of lighting and feeding regimes as a tool for salmon lice control

Benedikt Frenzl, Lars Helge Stien, David J. Cockerill, Frode Oppedal, Randolph H. Richards, Andrew P. Shinn, James Emmanuel Bron, Hervé Migaud
Aquaculture 424-425 p. 183-188
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

Soft texture of Atlantic salmon fillets is associated with glycogen accumulation

Jacob Torgersen, Erling Olaf Koppang, Lars Helge Stien, Achim Kohler, Mona Elisabeth Pedersen, Turid Mørkøre
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

Digital image analysis as a tool to quantify gaping and morphology in smoked salmon slices

Grigory Merkin, Lars Helge Stien, Karin Pittman, Ragnar Nortvedt
Aquacultural Engineering 54 p. 64-71
2013

Towards cod without spawning: artificial continuous light in submerged sea-cages maintains growth and delays sexual maturation for farmed Atlantic cod Gadus morhua

Øyvind Johan Korsøen, Timothy David Dempster, Jan Erik Fosseidengen, Ørjan Karlsen, Frode Oppedal, Lars Helge Stien, Tore S Kristiansen
Aquaculture Environment Interactions 3 p. 245-255
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

From fright to anticipation: Reward conditioning versus habituation to a moving dip net in farmed Atlantic cod (Gadus morhua)

Jonatan Nilsson, Lars Helge Stien, Jan Erik Fosseidengen, Rolf Erik Olsen, Tore S Kristiansen
Applied Animal Behaviour Science 138 p. 118-124
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

Crowding, pumping and stunning of Atlantic salmon, the subsequent effect on pH and rigor mortis

Bjørn Roth, Endre Grimsbø, Erik Slinde, Atle Foss, Lars Helge Stien, Ragnar Nortvedt
Aquaculture 326-329 p. 178-180
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
2011

Environmental drivers of Atlantic salmon behaviour in sea-cages: A review

Frode Oppedal, Timothy David Dempster, Lars Helge Stien
Aquaculture 311 p. 1-18
2011

Voluntary responses and limits of tolerance to pressure reduction and swimbladder expansion in farmed Atlantic cod

Tore S Kristiansen, Lars Helge Stien, Jan Erik Fosseidengen, Espen Strand, Jon-Erik Juell
Aquaculture International 19 p. 625-636
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
2010

The influence of anaerobic muscle activity, maturation and season on the flesh quality of farmed turbot

Bjørn Roth, Albert Imsland, Lars Helge Stien, Rian Schelvis-Smit, Snorri Gunnarsson, Atle Foss
Aquaculture International 18 p. 461-474
2010

Electrical stimulation of Atlantic salmon muscle and the effect on flesh quality

Bjørn Roth, Ragnar Nortvedt, Erik Slinde, Atle Foss, Endre Grimsbø, Lars Helge Stien
Aquaculture 301 p. 85-90
2010

Learning and anticipatory behaviour in a "sit-and-wait" predator: The Atlantic halibut

Jonatan Nilsson, Tore S. Kristiansen, Jan Erik Fosseidengen, Lars Helge Stien, Anders Fernø, Ruud van den Bos
Behavioural Processes 83 p. 257-266
2009

Different dietary levels of protein to lipid ratio affected digestive efficiency, skeletal growth, and muscle protein in rainbow trout families. Scholarly Research Exchange, Vol. 2009 (2009), Article ID 709529, 13 pages. http://www.hindawi.com/archive//2009/709529/abs/

Krisna Rungruangsak-Torrissen, Lars Helge Stien, Britt Sværen Daae, Tone Vågseth, Grethe Beate Thorsheim, Declan Tobin, Ossi Ritola
Advances in Civil Engineering 2009
2008

Image analysis as a tool to facilitate selective breeding of quality traits in rainbow trout

Antti Kause, Lars Helge Stien, Krisna Rungruangsak-Torrissen, Ossi Ritola, Kari Ruohonen, Anders Kiessling
Livestock Science 114 p. 315-324
2008

Image analysis as a tool to facilitate selective breeding of quality traits in rainbow trout

Antti Kause, Lars Helge Stien, Krisna Rungruangsak-Torrissen, Ossi Ritola, Kari Ruohonen, Anders Kiessling
Livestock Science 114 p. 315-324
2007

Rapid estimation of fat content in salmon fillets by colour image analysis

Lars Helge Stien, Anders Kiessling, Fredrik Manne
Journal of Food Composition and Analysis 20 p. 73-79
2007

Rapid estimation of fat content in salmon fillets by colour image analysis

Lars Helge Stien, Anders Kiessling, Fredrik Manne
Journal of Food Composition and Analysis 20 p. 73-79
2007

Exsanguination of turbot and the effect on fillet quality measured mechanically, by sensory evaluation, and with computer vision

Bjørn Roth, R. Schelvis, Lars Helge Stien, Atle Foss, Ragnar Nortvedt, Albert Imsland
Journal of Food Science 72 p. E525-E531
2006

Effect of pre- and post-mortem temperature on rigor in Atlantic salmon muscle as measured by four different techniques

Anders Kiessling, Lars Helge Stien, Øivind Torslett, Jorma Suontama, Erik Slinde
Aquaculture 259 p. 390-402
2006

Image analysis as a tool to quantify rigor contraction in pre-rigor-filleted fillets

Lars Helge Stien, Jorma Suontama, Anders Kiessling
Computers and Electronics in Agriculture 50 p. 109-120
2006

Automated image analysis as a tool to quantify the colour and composition of rainbow trout (Oncorhynchus mykiss W.) cutlets

Lars Helge Stien, Fredrik Manne, Kari Ruohonen, Antti Kause, Krisna Rungruangsak-Torrissen, Anders Kiessling
Aquaculture 261 p. 695-705
2006

Image analysis as a tool to quantify rigor contraction in pre-rigor-filleted fillets

Lars Helge Stien, Jorma Suontama, Anders Kiessling
Computers and Electronics in Agriculture 50 p. 109-120
2006

Effect of pre- and post-mortem temperature on rigor in Atlantic salmon muscle as measured by four different techniques

Anders Kiessling, Lars Helge Stien, Øivind Torslett, Jorma Suontama, Erik Slinde
Aquaculture 259 p. 390-402
2006

Automated image analysis as a tool to quantify the colour and composition of rainbow trout (Oncorhynchus mykiss W.) cutlets

Lars Helge Stien, Kari Ruohonene, Antti Kause, Krisna Rungruangsak-Torrissen, Anders Kiessling, Fredrik Manne
Aquaculture 261 p. 695-705
2005

The effects of stress and storage temperature on the colour and texture of pre-rigor filleted farmed cod (Gadus morhua L.)

Lars Helge Stien, Elisabeth Hirmas, Marit Bjørnevik, Ørjan Karlsen, Ragnar Nortvedt, Anna Maria Bencze Rørå, Jan Sunde, Anders Kiessling
Aquaculture Research 36 p. 1197-1206

Other journal contributions

2018

Corrigendum to `The use and effects of hydrogen peroxide on salmon lice and post-smolt Atlantic salmon'[Aquaculture 486 (2018) 246?252](S0044848617315545)(10.1016/j.aquaculture.2017.12.041)

Kathy Overton, Francisca Samsing, Frode Oppedal, Sussie Dalvin, Lars Helge Stien, Tim Dempster
Aquaculture 491 p. 400

Scientific lectures

2024

Velferdsindikatorer for trenging

Stien, Lars Helge
2023

Salmon lice preventative technology - fact finding studies from small to large scale

Frode Oppedal, Lars Helge Stien, Tina Marie Wier Oldham, Samantha Bui, Luke T. Barrett
2023

Velferdseffekter av skjelltap

Jonatan Nilsson, Lars Helge Stien, Ewa Harasimczuk, Kristine Gismervik, Gerrit Timmerhaus, Hogne Bleie, Angelico Madaro
2023

Presence of salmon impact behaviour and survival of cleaner fish in sea-cages

Nina Sandlund, Johanne Kleppe, Lars Helge Stien, Frode Oppedal, Lena Geitung
2023

LAKSVEL - Utvikling og evaluering av metode for rutinemessig velferdsovervåking av laks i norske matfiskanlegg

Jonatan Nilsson, Kristoffer Vale Nielsen, Kristine Gismervik, Martin Haugmo Iversen, Jelena Kolarevic, Christopher Noble, Lars Helge Stien, Tore S Kristiansen
2023

Trenging- når er nok nok?-trengeskala og velferdsindikasjoner

Jonatan Nilsson, Lars Helge Stien, Christopher Noble, David Izquierdo-Gomez, Elisabeth Ytteborg, Angelico Madaro
2023

Kan vi bli enige om belastningsgrad?

Stien, Lars Helge
2023

LAKSVEL standardisert operasjonell velferdsovervåking for oppdrettslaks og litt FASTWELL

Stien, Lars Helge
2023

WELFARE SEVERITY 2021-2025 – Industry meets §3

Stien, Lars Helge
2023

Risiko for dødelighet hos oppdrettslaks i sjøfasen

Ole Folkedal, Lars Helge Stien
2023

Welfare severity; status og hva som kommer

Stien, Lars Helge
2023

Effekt på dyrevelferd av gjentatt termisk behandling med ulik delta T

Martin Haugmo Iversen, Tore Seternes, Samantha Bui, Jonatan Nilsson, Angelico Madaro, Deepti Manjari Patel, Monica Fengsrud Brinchmann, Lars Helge Stien
2022

Nedsenkning av laks med luftkuppel fra forsøk til kommersiell drift

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

New Welfare Indicators and New Welfare Protocols

Stien, Lars Helge
2022

WELFARE SEVERITY- Presentasjon av prosjekt

Stien, Lars Helge
2022

Effekt på dyrevelferd av gjentatt termisk behandling med ulik dt

Lars Helge Stien, Tore Seternes, Samantha Bui, Jonatan Nilsson, Angelico Madaro, Deepti Manjari Patel, John Björn Sällebrant, Martin Haugmo Iversen
2022

Effekt på dyrevelferd av gjentatt termisk behandling med ulik dt

Lars Helge Stien, Tore Seternes, Samantha Bui, Jonatan Nilsson, Angelico Madaro, Deepti Manjari Patel, John Björn Sällebrant, Martin Haugmo Iversen
2022

LAKSVEL

Jonatan Nilsson, Lars Helge Stien
2022

LAKSVEL - Standardisert operasjonell velferdsovervåking for laks i matfiskanlegg

Jonatan Nilsson, Tore S Kristiansen, Lars Helge Stien, Kristine Gismervik, Kristoffer Vale Nielsen, Martin Haugmo Iversen, Christopher Noble, Jelena Kolarevic, Hilde Frotjold, Kathrine Nilsen, Eirik Wilkinson, Klakegg Barbo, Hege Sørvåg Hauge, Per Anton Sæther
2022

LAKSVEL - Utvikling og evaluering av metode for rutinemessig velferdsovervåking av laks i norske matfiskanlegg

Jonatan Nilsson, Kristoffer Vale Nielsen, Kristine Gismervik, Martin Haugmo Iversen, Jelena Kolarevic, Christopher Noble, Lars Helge Stien, Tore S Kristiansen
2022

Modeling severity of injuries and signs of disease in farmed Atlantic Salmon

Stien, Lars Helge
2022

Echofeeding

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

Miljø, lus og velferd i ny merdteknologi

Frode Oppedal, Lars Helge Stien, Samantha Bui, Luke Barrett, Tina Marie Wier Oldham
2022

Physical prevention of sealice

Frode Oppedal, Lars Helge Stien, Samantha Bui, Tina Marie Wier Oldham, Luke Barrett
2022

Laksvel - Utvikling og evaluering av metode for rutinemessig velferdsovervåkning av laks i norske matfiskanlegg

Jonatan Nilsson, Lars Helge Stien, Kristoffer Vale Nielsen, Kristine Gismervik, Martin Haugmo Iversen, Christopher Noble, Tore S Kristiansen
2021

Dødelighet i norsk oppdrettsnæring (utvikling de siste 10 årene)

Stien, Lars Helge
2021

Fish welfare implications of prolonged fasting periods in Atlantic salmon

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

Sulting av laks – en positiv historie

Lars Helge Stien, Malthe Hvas, Frode Oppedal
2021

Vekst er mer enn kilo og gram

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

Termisk avlusing. Noen resultater fra forskningen

Lars Helge Stien, Kristine Gismervik
2021

Fiskevelferdsforumets årsmøte 2021- hvor er vi og hvor skal vi?

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Lars Helge Stien
2020

Arbeid med velferdsevaluering ved Havforskningsinstituttet

Jonatan Nilsson, Lars Helge Stien
2020

Termisk avlusning; utfordringer og alternativ

Stien, Lars Helge
2020

Operational Welfare Indicators for Salmon

Stien, Lars Helge
2020

Improving fish welfare in the aquaculture industry

Stien, Lars Helge
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
2020

Forvaltning av fiskevelferd og -helse fra kyllingperspektivet

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Christian Medaas, Marianne Elisabeth Lien, Lars Helge Stien
2020

Effekter fra det regulatoriske rammeverket på fiskehelse og fiskevelferd- Fokus fiskehelsepersonell

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Marianne Elisabeth Lien, Christian Medaas, Lars Helge Stien
2020

Oppdatering forvaltningsstøtte: termisk

Kristine Gismervik, Lars Helge Stien
2020

REGFISHWELH- forslag regelverksendringer

Kristine Gismervik, Tore S Kristiansen, Brit Tørud, Lars Helge Stien
2020

Fisken først – men hvilken? Forhold som påvirker ivaretakelse av fiskevelferd på havbrukslokaliteter

Kristine Vedal Størkersen, Kristine Gismervik, Tonje Cecilie Osmundsen, Lars Helge Stien, Brit Tørud, Marianne Elisabeth Lien, Tore S Kristiansen, Christian Medaas
2020

Forvaltning av velferd til norsk oppdrettslaks: Tre konflikttilfeller

Lars Helge Stien, Kristine Gismervik, Marianne Elisabeth Lien, Christian Medaas, Tonje Cecilie Osmundsen, Brit Tørud, Tore S Kristiansen, Kristine Vedal Størkersen
2020

Uspesifikke krav vs. spesifikke krav

Lars Helge Stien, Tore S Kristiansen
2020

Sammenlikning av regelverksramme laks og kylling -dyrevelferd og helse

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Christian Medaas, Marianne Elisabeth Lien, Lars Helge Stien
2020

Fiskevelferd sett fra merdkanten. Organisjonsstudie av lokalitetspersonell

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Kristine Gismervik, Lars Helge Stien, Christian Medaas, Brit Tørud, Tore S Kristiansen, Marianne Elisabeth Lien
2020

Er varmt vann smertefullt for laks? ‐Atferd og vevsskader

Kristine Gismervik, Siri Kristine Gåsnes, Lars Helge Stien, Jonatan Nilsson
2020

Analyse av dødelighetsdata fra rensefiskkampanjen

Lars Helge Stien, Kristine Vedal Størkersen, Kristine Gismervik
2019

Velferd og data, sett med "forvaltningsstøttebriller"

Kristine Gismervik, Lars Helge Stien, Brit Tørud
2019

Fiskevelferd under termisk avlusing. Resultater av ny forskning

Stien, Lars Helge
2019

Salmon Welfare Index (SWIM) guidelines

Stien, Lars Helge
2019

Er varmt vann smertefullt for laks? -Atferd og vevsskader, foreløpige resultater

Siri Kristine Gåsnes, Jonatan Nilsson, Kristine Gismervik, Lars Helge Stien
2019

Does sudden exposure to warm water cause pain in Atlantic salmon?

Jonatan Nilsson, Lene Moltumyr, Angelico Madaro, Tore S Kristiansen, Siri G Gåsnes, Kristine Gismervik, Cecilie Marie Mejdell, Lars Helge Stien
2019

Does sudden exposure to warm water cause pain in Atlantic salmon?

Jonatan Nilsson, Lene Moltumyr, Angelico Madaro, Tore S Kristiansen, Siri Kristine Gåsnes, Cecilie Marie Mejdell, Kristine Gismervik, Lars Helge Stien
2019

Dess større ei næring er, dess viktigere er et godt regelverk for å sikre helse og velferd. Sammenligne regelverk for fjørfe og oppdrettsfisk.

Lars Helge Stien, Kristine Gismervik
2019

REGFISHWELH-Resultat spørreundersøkelser

Lars Helge Stien, Kristine Vedal Størkersen
2019

Velferdovervåkning hos oppdrettsfisk

Christopher Noble, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Kristine Gismervik
2018

Er varmt vann smertefullt for fisken?

Siri Kristine Gåsnes, Kristine Gismervik, Lars Helge Stien, Jonatan Nilsson, Lene Moltumyr, Anne Gerd Gjevre, Cecilie Marie Mejdell, Brit Tørud, Angelico Madaro
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

Effekter av norsk havbruksforvaltning og regulering for fiskevelferd og -helse

Lars Helge Stien, Brit Tørud
2018

REGFISHWELL - Infromasjon om prosjekt om regelverk og forvaltning av fiskeoppdrett

Stien, Lars Helge
2018

Operative velferdsindikatorer ved lusebehandling (FISHWELL)

Kristine Gismervik, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Jelena Kolarevic, Kristoffer Vale Nielsen, Christopher Noble
2018

Regler på kryss og tvers- blir det kontrovers? Effektene for fiskevelferd og –helse

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Marianne Elisabeth Lien, Christian Medaas, Lars Helge Stien
2018

Gir ord holdning om dyreverd?

Kristine Gismervik, Brit Tørud, Tore S Kristiansen, Tonje Cecilie Osmundsen, Kristine Vedal Størkersen, Marianne Elisabeth Lien, Lars Helge Stien
2018

Er teknologiutviklingen tilpasset biologien

Stien, Lars Helge
2018

Konsekvenser av avlusing på dødelighet

Kathy Overton, Lars Helge Stien
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

Fluidpermeabelt luseskjørt og fiskevelferd i oppdrett av atlantisk laks (Salmo Salar L.) i Nord-Norge

Mattias Bendiksen Lind, Lars Helge Stien, Frode Oppedal, Tore Seternes
2017

Hvordan går det med laksen i merdene?

Tore S Kristiansen, Lars Helge Stien
2017

Welfare needs of cephalopods

Tore S Kristiansen, Lars Helge Stien
2017

Velferdsvurdering i produksjonssystemer for laks

Jelena Kolarevic, Lars Helge Stien
2017

FISHWELL - et velferdsleksikon

Chris Noble, Lars Helge Stien
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

FISHWELL; en verktøykasse for velferdsdokumentasjon

Kristine Gismervik, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Chris Noble
2017

REGFISHWELH; Bedre praksis/forvaltning fiskehelse og velferd?

Kristine Gismervik, Brit Tørud, Lars Helge Stien, Tore S Kristiansen, Tonje Cecilie Osmundsen, Marianne Elisabeth Lien, Christian Medaas
2017

REGFISHWELH; presentasjon av prosjektet med spørsmålsdiskusjon

Kristine Gismervik, Brit Tørud, Lars Helge Stien, Tore S Kristiansen, Tonje Cecilie Osmundsen, Marianne Elisabeth Lien, Christian Medaas
2017

Ny håndbok: Velferdsindikatorer for oppdrettslaks:Hvordan vurdere og dokumentere fiskevelferd

Chris Noble, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Kristine Gismervik
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

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
2017

AN INTRODUCTION TO THE FISHWELL HANDBOOK – AN INDICATOR-BASED GUIDE FOR ASSESSING THE WELFARE OF ATLANTIC SALMON Salmo salar L. OUT ON THE FARM

Chris Noble, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Jelena Kolarevic, Kristine Gismervik, James F. Turnbull, David Izquierdo-Gómez, Åsa Maria Olofsdotter Espmark, Tore S Kristiansen, Cecilie Marie Mejdell, Kristian Ellingsen, Kristoffer Vale Nielsen, Kjell Øivind Midling, Bjørn-Steinar Sæther
2017

Direct filleting and super chilling of Atlantic salmon

Bjørn Tore Rotabakk, Karsten Heia, Tom Ståle Nordtvedt, Trond Løvdal, Lars Helge Stien, Bjørn Roth
2017

Lakselus og tilpasninger til temperatur

Sussie Dalvin, Samantha Bui, Frode Oppedal, Rasmus Skern-Mauritzen, Tone Vågseth, Daniel William Wright, Lars Are Hamre, Lars Helge Stien, Francisca Samsing, Timothy David Dempster, Kathy Overton
2016

A strategy to approach welfare assessment in cephalopods: the case of the common octopus (Octopus vulgaris)

Tore S Kristiansen, Lars Helge Stien, Pamela Imperadore, Graziano Fiorito
2016

Er atferd hos oppdrettslaks familieavhengig?

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

Kunnskapssammenstilling og fiskevelferd for laks og regnbueørret i oppdrett (FISHWELL)

Chris Noble, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Kristine Gismervik
2016

Presentasjon av Risikovurdering 2016

Terje Svåsand, Ørjan Karlsen, Bjørn Olav Kvamme, Lars Helge Stien, Geir Lasse Taranger, Karin Kroon Boxaspen
2016

Snorkelmerder mot påslag av lakselus.

Frode Oppedal, Lars Helge Stien, Timothy David Dempster
2016

Snorkelmerd – status.

Frode Oppedal, Lars Helge Stien, Timothy David Dempster
2016

Temperaturens betydning for utvikling av lakselus larver.

Frode Oppedal, Sussie Dalvin, Fransisca Samsing, Ingrid Askeland Johnsen, Lars Helge Stien, Timothy David Dempster, Tone Vågseth
2016

The effectiveness of snorkel sea lice barrier technology increase with depth. Sea Lice control

Lars Helge Stien, Timothy David Dempster, Fransisca Samsing, Daniel William Wright, Samantha Bui, Frode Oppedal
2016

Predicting the effectiveness of depth-based technologies to prevent salmon lice infection using a dispersal model.

Fransisca Samsing, Ingrid Askeland Johnsen, Lars Helge Stien, Frode Oppedal, Jon Albretsen, Lars Asplin, Timothy David Dempster
2016

Snorkel cages mitigate sea lice infestation.

Frode Oppedal, Timothy David Dempster, Fransisca Samsing, Daniel William Wright, Samantha Bui, Lars Helge Stien
2015

Snorkel merd reduserer lusepåslag i små og store merder.

Frode Oppedal, Timothy David Dempster, Samantha Bui, Daniel William Wright, Tone Vågseth, Jan Erik Fosseidengen, Lars Helge Stien
2015

Tubenot/ snorkelmerd.

Lars Helge Stien, Timothy David Dempster, Frode Oppedal
2015

Lyskvalitetens betydning for å holde laksen dypt.

Stien, Lars Helge
2015

Depth distribution of amoeba within cage and effects of freshwater treatments.

Frode Oppedal, Timothy David Dempster, Lars Helge Stien, Barbara Nowak, Daniel William Wright
2015

Permanent skjørt for redusering av luspåslag på laks – vannmiljø og fiskens posisjon

Andreas Myskja Lien, Lars Helge Stien, Kevin Frank, Zsolt Volent, Per Rundtop, Lars Gansel, Jens Birkevold, Per Christian Endresen, Leif Magne Sunde
2015

Could be used the digestive gland of Octopus vulgaris paralarvae as an indicator of starvation

Raquel Fernandez-Gago, Lars Helge Stien, Francisco Rocha
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

Vannström: hvordan påverkar den laksoppdrett på sjøen?

David Johansson, Frida Maria Laursen, Anders Fernø, Jan Erik Fosseidengen, Klebert Pascal, Lars Helge Stien, Tone Vågseth, Frode Oppedal
2014

Snorkelmerd gir bærekraftig reduksjon av lusepåslag.

Lars Helge Stien, Timothy David Dempster, Samantha Bui, Frode Oppedal
2014

Snorkel mot lus.

Frode Oppedal, Timothy David Dempster, Samantha Bui, Daniel William Wright, Jan Erik Fosseidengen, Lars Helge Stien
2014

Hypoksi i lakseoppdrett - Praktiske konsekvenser.

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

Snorkel Sea cages - host-parasite mismatch reduces sea lice infestation in farmed salmon through snorkel cage designs.

Frode Oppedal, Timothy David Dempster, Samantha Bui, Daniel William Wright, Jan Erik Fosseidengen, Lars Helge Stien
2014

Mismatching host and parasite depth

Lars Helge Stien, Tim Dempster, Samantha Bui, Daniel William Wright, Jan Erik Fosseidengen, Frode Oppedal
2013

Snorkel project

Lars Helge Stien, Frode Oppedal
2013

Water current; a directive factor for salmon behaviour in sea cages

David Johansson, Frida Maria Laursen, Anders Fernö, Lars Helge Stien, Jan Erik Fosseidengen, Frode Oppedal, Tone Vågseth, Klebert Pascal
2013

Reduced lice infestation in salmon held in modified cages: The use of ‘snorkels’ to manipulate swimming depth

Frode Oppedal, Lars Helge Stien, Øyvind Johan Korsøen, Samantha Bui, Timothy David Dempster
2012

Sensor technology is an essential part of research on fish welfare

Stien, Lars Helge
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

Tekstur av laksemuskel - nye forskningsverktøy har gitt kunnskapsinnovasjoner

Turid Mørkøre, Diane Bahuaud, J Borderias, Mari Gaarder, M.C. Gomez-Guillen, Ulf Gøran Erikson, Celeste Jacq, Kristin Hollung, Erling Olaf Koppang, Aleksei Krasnov, P Montero, H Moreno, Thomas Larsson, Jana Pickova, Inger Beate Standal, Lars Helge Stien, Magny S. Thomassen, Jacob Torgersen, Eva Veiseth-Kent, Tone-Kari K Østbye, Bente Ruyter
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

Animal welfare - a need for conceptual clarity

Tore S Kristiansen, Marc Bracke, Lars Helge Stien, Thomas Torgersen
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
2010

SWIM - Salmon Welfare Index Model

Lars Helge Stien, Marc Bracke, Anders Kiessling, Silje Kittilsen, Paul Johan Midtlyng, Frode Oppedal, Øyvind Øverli, Tore S Kristiansen
2006

Description of fish behavior by video and computer vision

Ivar Austvoll, Lars Helge Stien, Tore S. Kristiansen
2006

Different digestive ability, and protein and growth efficiency in rainbow trout families fed diets with different protein levels

Krisna Rungruangsak-Torrissen, Britt Sværen Daae, Grethe Beate Thorsheim, Tone Vågseth, Lars Helge Stien, Declan Tobin, Ossi Ritola

Poster

2023

A comparative study of the physiological responses of acute and chronically stressed diploid and triploid Atlantic salmon (Salmo salar).

Angelico Madaro, Floriana Lai, Per Gunnar Fjelldal, Tom HANSEN, Virginie Gelebart, Ivar Rønnestad, R.E. Olsen, Lars Helge Stien
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
2016

Freshwater sensitive attached copepodids.

Daniel William Wright, Frode Oppedal, Lars Helge Stien, Timothy David Dempster
2012

Novel processing of pre-rigor farmed Atlantic cod (Gadus morhua) fillets by combining direct filleting and superchilling

Bjørn Tore Rotabakk, Hogne Bleie, Lars Helge Stien, Bjørn Roth
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
2010

Welfaremeter - A system for monitoring of sea cage environment, fish behaviour and assessment of fish welfare

Lars Helge Stien, Tore S Kristiansen, Trygve Gytre, Frode Oppedal, Thomas Torgersen

Reports and dissertations

2023

Production, fasting and delousing of triploid and diploid salmon in Northern Norway - Report for the 2020-generation

Lars Helge Stien, Cameron Thompson, Per Gunnar Fjelldal, Frode Oppedal, Tore S Kristiansen, Per Anton Sæther, Per Magne Bølgen, Lisbeth Martinsen
2023

Risikorapport norsk fiskeoppdrett 2023 — Produksjonsdødelighet hos oppdrettsfisk og miljøeffekter av norsk fiskeoppdrett

Ellen Sofie Grefsrud, Lasse Berg Andersen, Bjørn Einar Grøsvik, Ørjan Karlsen, Bjørn Olav Kvamme, Pia Kupka Hansen, Vivian Husa, Nina Sandlund, Lars Helge Stien, Monica Favnebøe Solberg
2023

Delousing Efficacy and Physiological Impacts on Atlantic Salmon of Freshwater and Hyposaline Bath Treatments

Cameron Thompson, Angelico Madaro, Frode Oppedal, Lars Helge Stien, Samantha Bui
2022

Risikorapport norsk fiskeoppdrett 2022 - kunnskapsstatus - Effekter på miljø og dyrevelferd i norsk fiskeoppdrett

Ellen Sofie Grefsrud, Pål Arne Bjørn, Bjørn Einar Grøsvik, Pia Kupka Hansen, Vivian Husa, Ørjan Karlsen, Bjørn Olav Kvamme, Ole Bent Samuelsen, Nina Sandlund, Monica Favnebøe Solberg, Lars Helge Stien
2022

Laksvel - Standardisert operasjonell velferdsovervåking for laks i matfiskanlegg

Jonatan Nilsson, Kristine Gismervik, Kristoffer Vale Nielsen, Martin Haugmo Iversen, Christopher Noble, Jelena Kolarevic, Hilde Frotjold, Kathrine Nilsen, Eirik Wilkinson, Barbo Klakegg, Hege Sørvåg Hauge, Per Anton Sæther, Tore S Kristiansen, Lars Helge Stien
2022

Risikorapport norsk fiskeoppdrett 2022 - risikovurdering — Effekter på miljø og dyrevelferd i norsk fiskeoppdrett

Ellen Sofie Grefsrud, Lasse Berg Andersen, Pål Arne Bjørn, Bjørn Einar Grøsvik, Pia Kupka Hansen, Vivian Husa, Ørjan Karlsen, Bjørn Olav Kvamme, Ole Bent Samuelsen, Nina Sandlund, Monica Favnebøe Solberg, Lars Helge Stien
2022

Effekt på dyrevelferd av gjentatte termiske behandlinger med ulik Δt, ulik utgangstemperatur og ulik behandlingstemperatur

Lars Helge Stien, Samantha Bui, Jonatan Nilsson, Angelico Madaro, Per Gunnar Fjelldal, Merete Bjørgan Schrøder, Birger Venås, Malin Johansen, Tore Seternes, Caroline Piercey Åkesson, Helene Wisløff, Monica Fengsrud Brinchmann, Deepti Manjari Patel, Martin Haugmo Iversen
2021

Towards a sustainable fishery and use of cleaner fish in salmonid aquaculture. Challenges and opportunities

Stein Mortensen, Kim Aleksander Tallaksen Halvorsen, Anne Berit Skiftesvik, Caroline Durif, Lars Helge Stien, Eeva Jansson, Maria Quintela, Nina Sandlund, Kjell Harald Nedreaas, Terje Jørgensen, Hans Hagen Stockhausen, Kjetil Korsnes, Inger Fyllingen, Hulda Bysheim, Patrick Reynolds, Ellika Faust, Håkan Wennhage, Carl André, Peter Rask Møller, Henrik Carl, Jacob Linnemann Rønfeldt, Albert K.D. Imsland, Lauren Henly
2021

Tining av fryst laks, effekt av fryselagringstid og tineregime

Bjørn Tore Rotabakk, Lars Helge Stien, Torstein Skåra
2021

Andre samlerapport: velferd for triploid laks i Nord-Norge - Sluttrapport, utsett 2018

Lars Helge Stien, Florian Sambraus, Per Anton Sæther, Mattias Bendiksen Lind, Tore S Kristiansen, Jonatan Nilsson, Per Gunnar Fjelldal
2021

Tredje samlerapport: Velferd for triploid laks i Nord-Norge - Sluttrapport, utsett 2019

Lars Helge Stien, Florian Sambraus, Tore S Kristiansen, Per Gunnar Fjelldal, Per Anton Sæther, Lisbeth Martinsen
2021

Risikorapport norsk fiskeoppdrett 2021 - kunnskapsstatus

Ellen Sofie Grefsrud, Ørjan Karlsen, Bjørn Olav Kvamme, Kevin Alan Glover, Vivian Husa, Pia Kupka Hansen, Bjørn Einar Grøsvik, Ole Bent Samuelsen, Nina Sandlund, Lars Helge Stien, Terje Svåsand
2021

Risikorapport norsk fiskeoppdrett 2021 - risikovurdering

Ellen Sofie Grefsrud, Ørjan Karlsen, Bjørn Olav Kvamme, Kevin Alan Glover, Vivian Husa, Pia Kupka Hansen, Bjørn Einar Grøsvik, Ole Bent Samuelsen, Nina Sandlund, Lars Helge Stien, Terje Svåsand
2020

Kunnskapsstatus - miljøeffekter av norsk fiskeoppdrett 2019 : Risikorapport norsk fiskeoppdrett, del 2

Ellen Sofie Grefsrud, Terje Svåsand, Kevin Glover, Vivian Husa, Pia Kupka Hansen, Ole Bent Samuelsen, Nina Sandlund, Lars Helge Stien
2020

Analyse av dødelighetsdata fra spørreundersøkelse om velferd hos rensefisk

Lars Helge Stien, Kristine Vedal Størkersen, Siri Kristine Gåsnes
2020

Welfare Indicators for farmed rainbow Trout: Tools for assessing Fish welfare

Christopher Noble, Kristine Gismervik, Martin Haugmo Iversen, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, James F. Turnbull
2020

Velferdsindikatorer for regnbueørret i oppdrett: Hvordan vurdere og dokumentere fiskevelferd

Christopher Noble, Kristine Gismervik, Martin Haugmo Iversen, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, James F. Turnbull
2019

Første samlerapport: Velferd for triploid laks i Nord-Norge

Lars Helge Stien, Per Anton Sæther, Tore S Kristiansen, Per Gunnar Fjelldal, Florian Sambraus
2019

Risikorapport norsk fiskeoppdrett 2019 - Miljøeffekter av lakseoppdrett

Ellen Sofie Grefsrud, Terje Svåsand, Kevin Glover, Vivian Husa, Pia Kupka Hansen, Ole Bent Samuelsen, Nina Sandlund, Lars Helge Stien
2019

Intervju fjørfe. Samling av notater fra intervju blant fjørfenæring og -forvaltning

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Kristine Gismervik, Lars Helge Stien
2019

Intervju om fiskevelferd. Samling av notater fra feltarbeid og intervju blant oppdrettsnæring og forvaltning

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Kristine Gismervik, Lars Helge Stien
2019

Resultat om dyrevelferd. Svar på spørreundersøkelse blant kyllingbønder

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Kristine Gismervik, Lars Helge Stien
2019

Resultat om fiskevelferd til internt bruk. Svar på spørreundersøkelse blant oppdrettere og forvaltning

Kristine Vedal Størkersen, Tonje Cecilie Osmundsen, Kristine Gismervik, Lars Helge Stien
2019

The Well – Mixing skirt and freshwater lens concepts with smart-lighting and -feeding to enhance lice prevention and safeguard fish welfare

Daniel William Wright, Lars Helge Stien, Frode Oppedal, Michael Sievers, Ellen Ditria, Henrik Trengereid
2019

Summary and status of deep lights and deep feed use in commercial settings: welfare, behaviour and infestation at three case study sites — End report from the FHF projects 901154 “Dypelysogfôring”

Samantha Bui, Frode Oppedal, Jonatan Nilsson, Tina Marie Wier Oldham, Lars Helge Stien
2019

Avlusing med kaldt vann? – effektivitet og laksens velferd — sluttrapport FHF prosjekt 901488

Frode Oppedal, Lars Helge Stien, Daniel William Wright, Lene Moltumyr, Jonatan Nilsson, Timothy David Dempster, Kathy Overton
2019

Use of deep lights and deep feed in commercial settings: effect on welfare, behaviour and infestation, summary and status at three case study sites/ Bruk av dype lys og dyp fôring i kommersiell skala; effekter på velferd, atferd og lusepåslag ved 3 oppdrettsanlegg

Jonatan Nilsson, Samantha Bui, Lars Helge Stien, Frode Oppedal
2018

Lusepåslag og velferd hos dypfôret og overflatefôret laks på lokalitet Skrubbholmen midtvinters.

Jonatan Nilsson, Lars Helge Stien, Frode Oppedal
2018

Risikorapport norsk fiskeoppdrett 2018

Ellen Sofie Grefsrud, Kevin Glover, Bjørn Einar Grøsvik, Vivian Husa, Ørjan Karlsen, Tore S Kristiansen, Bjørn Olav Kvamme, Stein Mortensen, Ole Bent Samuelsen, Lars Helge Stien, Terje Svåsand
2018

Assessment of long-term implementation of sea lice prevention technologies: efficiency in reducing infestations and impact on fish welfare

Samantha Bui, Lars Helge Stien, Jonatan Nilsson, Frode Oppedal
2018

Do diploid Atlantic salmon (Salmo salar) have a higher swimming capacity than triploid?

Erling Nilsen, Enrique Blanco Gonzalez, Lars Helge Stien, Malthe Hvas
2018

Welfare Indicators for farmed Atlantic salmon: Tools for assessing fish welfare

Christopher Noble, Kristine Gismervik, Martin Haugmo Iversen, Jelena Kolarevic, Jonatan Nilsson, Lars Helge Stien, James F. Turnbull
2018

Lusepåslag og velferd hos dypfôret og overflatefôret laks på lokalitet Skrubbholmen midtvinters. – Delrapport fra FHF-prosjekt 901154 «Dypelysogfôring»

Jonatan Nilsson, Lars Helge Stien, Frode Oppedal
2018

Velferdsindikatorer for oppdrettslaks: Hvordan vurdere og dokumentere fiskevelferd. 3. utgave

Chris Noble, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Jelena Kolarevic, Kristine Gismervik
2017

Environment, lice levels, welfare and salmon swim depth at Kobbavika site with surface or deep feeding combined with artificial light/ Miljø, lusenivå, velferd og laksens svømmedyp ved lokalitet Kobbavika ved bruk av utfôring i overflate eller under vann kombinert med kunstig lys.

Jonatan Nilsson, Lars Helge Stien, Frode Oppedal
2017

Environment, lice levels, welfare and salmon swim depth at Kobbavika site with surface or deep feeding combined with artificial light. – part of CAC2015G production at Marine Harvest “The use of deep feeding and deep lights in lice mitigation” and FHF project 901154 “Dypelysogforing”

Jonatan Nilsson, Lars Helge Stien, Frode Oppedal
2017

Varmebehandling av laks i forbindelse med avlusing - Rapport til Mattilsynet

Anders Mangor-Jensen, Lars Helge Stien, Jan Erik Fosseidengen, Ragnfrid Mangor-Jensen
2017

Velferdsindikatorer for oppdrettslaks: Hvordan vurdere og dokumentere fiskevelferd

Chris Noble, Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Jelena Kolarevic, Kristine Gismervik
2016

Risikovurdering av norsk fiskeoppdrett 2016

Terje Svåsand, Ørjan Karlsen, Lars Helge Stien, Geir Lasse Taranger, Karin Kroon Boxaspen
2016

Snorkelmerd: Produksjonseffektivitet, adferd og velferd.

Frode Oppedal, Timothy David Dempster, Lars Helge Stien
2015

Permanent skjørt for redusering av luspåslag på laks

Andreas Myskja Lien, Lars Helge Stien, Randi Grøntvedt, Kevin Frank
2013

Risikovurdering norsk fiskeoppdrett 2012

Lars Asplin, Jan Aure, Raymond Bannister, Pål Arne Bjørn, Karin Kroon Boxaspen, Geir Dahle, Arne S Ervik, Bengt Finstad, Kevin A. Glover, Bjørn Einar Grøsvik, Pia Kupka Hansen, Mikko Heino, Vivian Husa, P. A. Jansen, Ingrid Askeland Johnsen, Knut Eirik Jørstad, Egil Karlsbakk, Ørjan Karlsen, Tore S Kristiansen, Bjørn Olav Kvamme, Rosa Maria Serra Llinares, Abdullah Madlhun, Terje van der Meeren, Stein Mortensen, Craig Morton, Rune Nilsen, Håkon Otterå, Sonal Patel, Bjørn-Steinar Sæther, Ole Bent Samuelsen, Øystein Skaala, Cecilie Skår, Ove Skilbrei, Lars Helge Stien, Terje Svåsand, Geir Lasse Taranger, Ingebrigt Uglem, Vidar Wennevik
2012

Erfaringer og analyser fra drift av oppdrettsanlegg på eksponerte lokaliteter

Merete Gisvold Sandberg, Andreas Myskja Lien, Leif Magne Sunde, Kristine Vedal Størkersen, Lars Helge Stien, Tore S Kristiansen
2010

Ny teknologi for overvåking av oppdrettsmiljø og fiskevelferd i oppdrettsmerder. Sluttrapport for FHF prosjekt 900085

Øyvind Aas-Hansen, Lars Helge Stien, Trygve Gytre, Torodd Tennøy, Jan Eyolf Bjørnsen, Tor Hatten Evensen, Bjørn-Steinar Sæther, Børge Damsgård, Ragnar Brataas, Dag Einar Finne, Christian Koren, Jo Arve Alfredsen, Audun H. Rikardsen, Tore S Kristiansen
2006

Application of machine vision to quantify rigor development, colour and fat content in slaughtered fish

Lars Helge Stien, Ragnar Nortvedt
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