Lars Helge Stien

Forsker
Telefon: 91243951
Avdeling: Dyrevelferd

Arbeidsområde

Personal research focus is on assessing animal welfare, salmon welfare in aquaculture, sea cage environment and the effects from new rearing methods and technology on salmon welfare in aquaculture. Important parts of this work is the Salmon Welfare Index Models (SWIM) 1.0 (Stien et al., 2013) and 2.0 (Pettersen et al., 2014). SWIM 1.0 is a standardised method for overall welfare assessment of Atlantic salmon (Salmo salar L.) in sea cages intended to be used by fish farmers, while SWIM 2.0 is a supplement to SWIM 1.0 and adds welfare indicators (WIs) that require the expertise of a fish health professional. My special knowledge of sea cage environment, salmon behaviour, salmon welfare, databases, digital image analysis and statistics have made me an attractive research partner in projects on diverse topics such as the cognitive abilities of fish, sea cage environment, new measuring technology, sea cages with skirts, snorkel sea cages, new slaughtering methods, fillet quality and more. The research has typically been disseminated at several levels, both in writing and oral for project partners, scientific communities, fish farming industries and authorities. I am responsible for IMRs yearly risk assessment of fish welfare in Norwegian aquaculture and frequently function as an advisor to the authorities in regards to fish welfare and regulations.

Curriculum Vitae

Scientific positions

  • Oct 2011 – today: Senior scientist (1110) at IMR, Animal welfare research group.
  • Mar 2017 – Feb 2020: Associated professor (SKO 1011) at UiT, Faculty of Biosciences, Fisheries and Economics.
  • Nov 2014 – Nov 2015: Acting group leader of the Animal welfare research, IMR
  • Sep 2008   – Oct.  2011: Senior scientist (1109) at IMR, Animal welfare research group.
  • Aug 2007 – Dec 2009: 20% Position as Researcher at the University of Bergen, Department of Biology. Part of the project “Welfare of farmed fish from harvest to killing – Meeting the future challenges (Farewell).
  • Mar 2006 – Sep 2008: Post doctor at IMR, Animal welfare research group.
  • Jan 2006   – Mar 2006: Researcher III the University of Bergen, Department of Biology.
  • Jan 2003   – Dec 2005: PhD position at the University of Bergen, Department of Biology.
  • Apr 2002 – Dec 2002: Project employee through University of Bergen at Matre Research Station (IMR), working for senior researcher Anders Kiessling.

Publikasjoner

Vitenskapelige artikler (NVI)

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

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 / Hindawi 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

Poster

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

Kapitler og bøker

2017

Kapittel 11. Effekter av lakselus og lusebehandling på laksens velferd

Tore S Kristiansen, Kristine Gismervik, Brit Tørud, Lars Helge Stien
p. 150-161
2017

Kapittel 8. Risiko for dødelighet og dårlig fiskevelferd i laks- og regnbueørretproduksjonen i sjø

Lars Helge Stien, Kristine Gismervik, Tore S Kristiansen
p. 119-122
2017

Velferdsindikatorer for oppdrettslaks: Hvordan vurdere og dokumentere fiskevelferd - Del B. Bruk av operative velferdsindikatorer for ulike oppdretts- og produksjonssystem

Jelena Kolarevic, Lars Helge Stien, Åsa Maria Olofsdotter Espmark, David Izquierdo Gomez, Bjørn-Steinar Sæther, Jonatan Nilsson, Frode Oppedal, Daniel William Wright, Kristoffer Vale Nielsen, Kristine Gismervik, Martin Haugmo Iversen, Chris Noble
p. 136-213
2017

Velferdsindikatorer for oppdrettslaks: Hvordan vurdere og dokumentere fiskevelferd - Del A. fiskevelferd og oppdrettslaks, kunnskap og teoretisk bakgrunn

Jonatan Nilsson, Lars Helge Stien, Martin Haugmo Iversen, Tore S Kristiansen, Thomas Torgersen, Frode Oppedal, Ole Folkedal, Malthe Hvas, Kristine Gismervik, Kristian Ellingsen, Kristoffer Vale Nielsen, Cecilie Marie Mejdell, Jelena Kolarevic, David Izquierdo Gomez, Bjørn-Steinar Sæther, Åsa Maria Olofsdotter Espmark, Kjell Øyvind Midling, Bjørn Roth, James F. Turnbull, Chris Noble
p. 10-135
2017

Velferdsindikatorer for oppdrettslaks: Hvordan vurdere og dokumentere fiskevelferd - Del C. Bruk av operative velferdsindikatorer i forbindelse med ulike håndteringsprosedyrer

Kristine Gismervik, James F. Turnbull, Kristoffer Vale Nielsen, Martin Haugmo Iversen, Jonatan Nilsson, Åsa Maria Olofsdotter Espmark, Cecilie Marie Mejdell, Bjørn-Steinar Sæther, Lars Helge Stien, David Izquierdo Gomez, Jelena Kolarevic, Kjell Øyvind Midling, Kristian Ellingsen, Chris Noble
p. 214-305
2014

Snorkelmerd gir mindre lakselus

Frode Oppedal, Timothy David Dempster, Samantha Bui, Lars Helge Stien
p. 35-36
2007

High-quality Seafood Products based on Ethical and Sustainable Production

Ragnar Nortvedt, Marit Espe, Ingrid Gribbestad, Leif Jørgensen, Ørjan Karlsen, Håkon Otterå, Mia Bencze Rørå, Lars Helge Stien, Nils Kristian Sørensen
p. 28-44
2006

Instrumental colour analysis of Atlantic salmon (Salmo salar L.) muscle

Lars Helge Stien, Asbjørn Høyem Amundsen, Turid Mørkøre, Simon Nesse Økland, Ragnar Nortvedt
p. 525-539
2006

Fra kjemisk sammensetning til trygg og god sjømat basert på etisk og bærekraftig produksjon

Ragnar Nortvedt, Marit Espe, Ingrid Gribbestad, Leif Jørgensen, Ørjan Karlsen, Håkon Otterå, Anna Maria Bencze Rørå, Lars Helge Stien, Nils Kristian Sørensen
p. 28-42

Populærvitenskapelige artikler

2015

Dyp nok snorkel kan gi bortimot null lus

Frode Oppedal, Timothy David Dempster, Lars Helge Stien
Lusedata.no
2015

Dyp nok snorkel kan gi bortimot null lus

Frode Oppedal, Timothy David Dempster, Lars Helge Stien
Norsk Fiskeoppdrett p. 44-49
2015

Kommersielle snorkelmerder

Frode Oppedal, Tone Vågseth, Timothy David Dempster, Lars Helge Stien
Norsk Fiskeoppdrett p. 68-74
2014

Snorkel gir mindre lakselus

Frode Oppedal, Timothy David Dempster, Samantha Bui, Lars Helge Stien
Norsk Fiskeoppdrett p. 59-61
2013

Får oppdrettslaks nok oksygen?

Mette Remen, Frode Oppedal, Lars Helge Stien, Thomas Torgersen, Rolf Erik Olsen
Havforskingstema
2013

Lakseluspåslag ble redusert med 50-80 prosent ved bruk av tak og snorkel på merden

Frode Oppedal, Timothy Dempster, Samantha Bui, Lars Helge Stien
Norsk Fiskeoppdrett 8 p. 75-81
2012

Får oppdrettslaks nok oksygen i merdene?

Mette Remen, Frode Oppedal, Lars Helge Stien, Thomas Torgersen, Rolf Erik Olsen
Havforskningsnytt
2011

Merdmiljø

Frode Oppedal, Lars Helge Stien, Lars Gansel, Klebert Pascal, Pål Lader, Jana Guenther, Mette Remen, Turid Synnøve Aas, Jan Aure, Thomas Torgersen
Havforskningsrapporten p. 28-30

Faglige foredrag

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

Annet tidsskriftbidrag

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

Rapporter og avhandlinger

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. 2. 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. – 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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