Frode Oppedal

Forsker
Telefon: 97166781
Avdeling: Dyrevelferd

Publikasjoner

Vitenskapelige artikler (NVI)

2018

Oxygen Uptake and Osmotic Balance of Atlantic Salmon in Relation to Exercise and Salinity Acclimation

Malthe Hvas, Tom Ole Nilsen, Frode Oppedal
Frontiers in Marine Science 5 p. 1-11
2018

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

Malthe Hvas, Ole Folkedal, Albert Imsland, Frode Oppedal
Biology Open 7:bio036079 p. 1-9
2018

Cage size affects dissolved oxygen distribution in salmon aquaculture

Tina Oldham, Frode Oppedal, Timothy David Dempster
Aquaculture Environment Interactions 10 p. 149-156
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

Drag Forces and deformation of aquaculture cages – full-scale towing tests in the field

Lars Christian Gansel, Frode Oppedal, Jens Birkevold, Stig Atle Tuene
Aquacultural Engineering 81 p. 46-56
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
2017

Behaviour in Atlantic salmon confers protection against an ectoparasite.

Samantha Bui, Frode Oppedal, Fransisca Samsing, Timothy David Dempster
Journal of Experimental Zoology. Part A: Ecological Genetics and Physiology 304 p. 73-80
2017

Behaviour in Atlantic salmon confers protection against an ectoparasite

Samantha Bui, Frode Oppedal, Francisca Samsing, Timothy David Dempster
Journal of Zoology 304 p. 73-80
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 gill parasite Paramoeba perurans compromises aerobic scope, swimming capacity and ion balance in Atlantic salmon.

Malthe Hvas, Egil Karlsbakk, Stig Mæhle, Daniel William Wright, Frode Oppedal
Conservation Physiology 5 p. 1-12
2017

Salmon lice evasion, susceptibility, retention, and development differ amongst host salmonid species.

Samantha Bui, Elina Halttunen, Agnes Marie Mohn, Tone Vågseth, Frode Oppedal
ICES Journal of Marine Science 75 p. 1071-1079
2017

Behaviour in the toolbox to outsmart parasites and improve fish welfare in aquaculture.

Samantha Bui, Frode Oppedal, Michael Sievers, Timothy David Dempster
Reviews in Aquaculture
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

Free-living Neoparamoeba perurans depth distribution is mostly uniform in salmon cages, but reshaped by stratification and potentially extreme fish crowding

Daniel William Wright, Barbara Nowak, Frode Oppedal, Andrew Bridle, Timothy David Dempster
Aquaculture Environment Interactions 9 p. 269-279
2017

Oxygen gradients affect behaviour of caged Atlantic salmon Salmo salar

Tina Oldham, Timothy David Dempster, Jan Olav Fosse, Frode Oppedal
Aquaculture Environment Interactions 9 p. 145-153
2017

Susceptibility, behaviour, and retention of the parasitic salmon louse (Lepeophtheirus salmonis) differ with Atlantic salmon population origin

Samantha Bui, Sussie Dalvin, Timothy David Dempster, Ole Fredrik Skulstad, Rolf Edvardsen, Anna Wargelius, Frode Oppedal
Journal of Fish Diseases 41 p. 431-442
2017

Network analysis reveals strong seasonality in the dispersal of a marine parasite and identifies areas for coordinated management

Fransisca Samsing, Ingrid Askeland Johnsen, Timothy David Dempster, Frode Oppedal, Eric A. Treml
Landscape Ecology
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
2017

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

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

Sustained swimming capacity of Atlantic salmon

Malthe Hvas, Frode Oppedal
Aquaculture Environment Interactions 9 p. 361-369
2017

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

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

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

Tom Johnny Hansen, Per Gunnar Fjelldal, Ole Folkedal, Tone Vågseth, Frode Oppedal
Aquaculture Environment Interactions p. 193-204
2016

The vertebral column and exercise in Atlantic salmon — Regional effects

Frida Solstorm, David Solstorm, Frode Oppedal, Per Gunnar Fjelldal
Aquaculture 461 p. 9-16
2016

Salmon lice (Lepeophtheirus salmonis) development times, body size and reproductive outputs follow universal models of temperature dependence

Francisca Samsing, Frode Oppedal, Sussie Dalvin, Ingrid Askeland Johnsen, Tone Vågseth, Timothy David Dempster
Canadian Journal of Fisheries and Aquatic Sciences 73 p. 1841-1851
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

The oxygen threshold for maximal feed intake of Atlantic salmon post-smolts is highly temperature-dependent

Mette Remen, Michael Sievers, Thomas Torgersen, Frode Oppedal
Aquaculture 464 p. 582-592
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

Effect of ectoparasite infestation density and life-history stages on the swimming performance of Atlantic salmon Salmo salar

Samantha Bui, Timothy David Dempster, Mette Remen, Frode Oppedal
Aquaculture Environment Interactions 8 p. 387-395
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
2016

Critical swimming speed in groups of Atlantic salmon Salmo salar

Mette Remen, Frida Solstorm, Samantha Bui, Klebert Pascal, Tone Vågseth, David Solstorm, Malthe Hvas, Frode Oppedal
Aquaculture Environment Interactions 8 p. 659-664
2016

Early-stage sea lice recruits on Atlantic salmon are freshwater sensitive

Daniel W. Wright, Frode Oppedal, Timothy David Dempster
Journal of Fish Diseases 39 p. 1179-1186
2015

Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages

Daniel W. Wright, Barbara Nowak, Frode Oppedal, Andrew Bridle, Timothy David Dempster
Aquaculture Environment Interactions 7 p. 67-74
2015

Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar

Frida Solstorm, David Solstorm, Frode Oppedal, Anders Fernø, Thomas Fraser, Rolf Erik Olsen
Aquaculture Environment Interactions 7 p. 125-134
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

Gone with the flow: Current velocities mediate parasitic infestation of an aquatic host

Francisca Samsing, David Solstorm, Frode Oppedal, Frida Solstorm, Timothy David Dempster
International Journal of Parasitology 45 p. 559-565
2015

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

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

Fast water currents reduce production performance of post-smolt Atlantic salmon Salmo salar

Frida Solstorm, David Solstorm, Frode Oppedal, Anders Fernø, Thomas William Kenneth Fraser, Rolf Erik Olsen
Aquaculture Environment Interactions 7 p. 125-134
2014

High host densities dilute sea lice Lepeophtheirus salmonis loads on individual Atlantic salmon, but do not reduce lice infection success

Francisca Samsing, Frode Oppedal, David Johansson, Samantha Bui, Timothy David Dempster
Aquaculture Environment Interactions 6 p. 81-89
2014

Flow fields inside stocked fish cages and the near environment

Lars Gansel, Siri Rackebrandt, Frode Oppedal, Thomas McClimans
Journal of Offshore Mechanics and Arctic Engineering 136
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

Production performance of Atlantic salmon (Salmo salar L.) postsmolts in cyclic hypoxia, and following compensatory growth

Mette Remen, Turid Synnøve Aas, Tone Vågseth, Thomas Torgersen, Rolf Erik Olsen, Albert Imsland, Frode Oppedal
Aquaculture Research 45 p. 1355-1366
2014

Aplasia of the septum transversum has no effect on plasma biochemistry following an acute hypoxic event in Atlantic salmon

Tom Fraser, Per Gunnar Fjelldal, Tom Johnny Hansen, Frode Oppedal, Rolf Erik Olsen, Tone Vågseth, Mette Remen
Diseases of Aquatic Organisms 111 p. 87-92
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

Behaviour of European sea bass, Dicentrarchus labrax L., in cages - impact of early life rearing conditions and management

Nikos Papandroulakis, Konstandia Lika, Tore S Kristiansen, Frode Oppedal, Pascal Divanach, Michael Pavlidis
Aquaculture Research 45 p. 1545-1558
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
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

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

Hypoxia tolerance thresholds for post-smolt Atlantic salmon: Dependency of temperature and hypoxia acclimation

Mette Remen, Frode Oppedal, Albert Imsland, Rolf Erik Olsen, Thomas Torgersen
Aquaculture 416 p. 41-47
2013

Group behavioural responses of Atlantic salmon (Salmo salar L.) to light, infrasound and sound stimuli

Samantha Bui, Frode Oppedal, Øyvind Johan Korsøen, Damien Sonny, Timothy David Dempster
PLoS ONE 8
2013

Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: Using artificial light to control swimming depth

Martin Føre, Timothy David Dempster, Jo Arve Alfredsen, Frode Oppedal
Aquaculture 388 p. 137-146
2013

Hydrodynamic interactions on net panel and aquaculture fish cages: A review

Klebert Pascal, Pål Lader, Lars Gansel, Frode Oppedal
Ocean Engineering 58 p. 260-274
2013

Modifying Atlantic salmon behaviour with light or feed stimuli may improve parasite control techniques

Samantha Bui, Frode Oppedal, Øyvind Johan Korsøen, Timothy David Dempster
Aquaculture Environment Interactions 3 p. 125-133
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
2013

Vertical distribution and sexual maturation in cage-farming of Atlantic cod (Gadus morhua L.) exposed to natural or continuous light

Ole Fredrik Skulstad, Ørjan Karlsen, Jan Erik Fosseidengen, Tore S Kristiansen, Geir Lasse Taranger, Frode Oppedal
Aquaculture Research 44 p. 903-917
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

Atlantic salmon (Salmo salar L.) in a submerged sea-cage adapt rapidly to re-fill their swim bladders in an underwater air filled dome

Øyvind Johan Korsøen, Jan Erik Fosseidengen, Tore S Kristiansen, Frode Oppedal, Samantha Bui, Timothy David Dempster
Aquacultural Engineering 51 p. 1-6
2012

Effects of cyclic environmental hypoxia on physiology and feed intake of post-smolt Atlantic salmon: Initial responses and acclimation

Mette Remen, Frode Oppedal, Thomas Torgersen, Albert Imsland, Rolf Erik Olsen
Aquaculture 326-329 p. 148-155
2012

Individual variation in swimming depth and growth in Atlantic salmon 2 (Salmo salar L.) subjected to submergence in sea-cages

Øyvind Johan Korsøen, Timothy David Dempster, Frode Oppedal, Tore S Kristiansen
Aquaculture 334 p. 142-151
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

Physiological response and mortality caused by scale loss in Atlantic herring

Rolf Erik Olsen, Frode Oppedal, Maria Mikaela Tenningen, Aud Vold
Fisheries Research 129-130 p. 21-27
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

Fluctuating sea-cage environments modify the effects of stocking densities on production and welfare parameters of Atlantic salmon (Salmo salar L.)

Frode Oppedal, Tone Vågseth, Timothy David Dempster, Jon-Erik Juell, David Johansson
Aquaculture 315 p. 361-368
2011

Technical note: Modifying Atlantic salmon (Salmo salar) behaviour to facilitate innovation of parasitic sea lice control techniques

Timothy David Dempster, Tore S Kristiansen, Øyvind Johan Korsøen, Jan Erik Fosseidengen, Frode Oppedal
Journal of Animal Science 89 p. 4281-4285
2010

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

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

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

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

Swimming depth and thermal history of individual Atlantic salmon (Salmo salar L.) in production cages under different ambient temperature conditions

David Johansson, Kari Ruohonen, Jon-Erik Juell, Frode Oppedal
Aquaculture 290 p. 296-303
2009

Long-term culture of Atlantic salmon (Salmo salar L.) in submerged cages during winter affects behaviour, growth and condition

Øyvind Johan Korsøen, Timothy David Dempster, Per Gunnar Fjelldal, Frode Oppedal, Tore S Kristiansen
Aquaculture 296 p. 373-381
2009

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

Timothy David Dempster, Øyvind Johan Korsøen, Ole Folkedal, Jon-Erik Juell, Frode Oppedal
Aquaculture 288 p. 254-263
2009

Digestive efficiency, free amino acid pools and quality of growth performance in Atlantic salmon (Salmo salar L.) affected by light regimes and vaccine types

Krisna Rungruangsak-Torrissen, Jan Sunde, Arne Erik Berg, Ulla Nordgarden, Per Gunnar Fjelldal, Frode Oppedal
Fish Physiology & Biochemistry 35 p. 255-272
2007

The influence of the pycnocline and cage resistance on current flow, oxygen flux and swimming behaviour of Atlantic salmon (Salmo salar L.) in production cages

D Johansson, Jon-Erik Juell, Frode Oppedal, Jan Erik Stiansen, K Ruohonen
Aquaculture 265
2007

A video analysis procedure for assessing vertical fish distribution in aquaculture tanks

Lars H. Stien, Silje Bratland, Ivar Austvoll, Frode Oppedal, Tore S. Kristiansen
Aquacultural Engineering 37 p. 115-124
2007

The influence of the pycnocline and cage resistance on current flow, oxygen flux and swimming behaviour of Atlantic salmon (Salmo salar L.) in production cages

David Johansson, Frode Oppedal, Jon-Erik Juell, Jan Erik Stiansen, Kari Ruohonen
Aquaculture 265 p. 271-287
2007

Thermo- and photoregulatory swimming behaviour of caged Atlantic salmon: Implications for photoperiod management and fish welfare

Frode Oppedal, Jon-Erik Juell, David Johansson
Aquaculture 265 p. 70-81
2006

Effect of environmental factors on swimming depth preferences of Atlantic salmon (Salmo salar L.) and temporal and spatial variations in oxygen levels in sea cages at a fjord site

D Johansson, K Ruohonen, A Kiessling, Frode Oppedal, Jan Erik Stiansen, M Kelly, JE Juell
Aquaculture 254
2006

Effect of environmental factors on swimming depth preferences of Atlantic salmon (Salmo salar L.) and temporal and spatial variations in oxygen levels in sea cages at a fjord site

David Johansson, Kari Ruohonen, Anders Kiessling, Frode Oppedal, Jan-Erik Stiansen, Mark Kelly, Jon-Erik Juell
Aquaculture 254 p. 594-605
2006

Photoperiod in seawater influence seasonal growth and chemical composition in autumn sea-transferred Atlantic salmon (Salmo salar L.) given two vaccines

Frode Oppedal, Rolf Erik Olsen, Tom Johnny Hansen, Arne Erik Berg, Geir Lasse Taranger
Aquaculture 254 p. 396-410
2004

Hydroacoustic monitoring of fish in sea cages: target strength (TS) measurements on Atlantic salmon (Salmo salar)

Frank Reier Knudsen, Jan Erik Fosseidengen, Frode Oppedal, Ørjan Karlsen, Egil Ona
Fisheries Research 69 p. 205-209
2003

Growth performance and sexual maturation in diploid and triploid Atlantic salmon (Salmo salar L.) in seawater tanks exposed to continuous light or simulated natural photoperiod

Frode Oppedal, Geir Lasse Taranger, Tom Johnny Hansen
Aquaculture 215 p. 145-162
2003

Submerged light increases swimming depth and reduces fish density of Atlantic salmon Salmo salar L. in production cages

Jon-Erik Juell, Frode Oppedal, Karin Kroon Boxaspen, Geir Lasse Taranger
Aquaculture Research 34 p. 469-477
2003

Seasonally changing metabolism in Atlantic salmon (Salmo salar L.) I – Growth and feed conversion ratio

Ulla Nordgarden, Frode Oppedal, Geir Lasse Taranger, Gro Ingunn Hemre, Tom Johnny Hansen
Aquaculture Nutrition 9 p. 287-293
2003

The effect of artificial light treatment and depth on the infestation of the sea louse Lepeophtheirus salmonis on Atlantic salmon (Salmo salar L.) culture

E.M. Hevrøy, K. Boxaspen, F. Oppedal, G.L. Taranger, J.C. Holm
Aquaculture 220 p. 1-14
2001

Artificial light and season affect vertical distribution and swimming behaviour of post-smolt Atlantic salmon in sea cages

Frode Oppedal, Tom Johnny Hansen, Geir Lasse Taranger
Journal of Fish Biology 58 p. 1570-1584
1999

Growth, osmoregulation and sexual maturation of underyearling Atlantic salmon smolt (Salmo salar L.) exposed to different intensities of continuous light in sea cages

Frode Oppedal, Tom Johnny Hansen, Jon-Erik Juell, Geir Lasse Taranger
Aquaculture Research 30 p. 491-499
1998

Light intensity affects growth and sexual maturation of Atlantic salmon (Salmo salar L.) postsmolts in sea cages

F. Oppedal, G.L. Taranger, Jon-Erik Juell, E. Fosseidengen, T. Hansen
Aquatic Living Resources 10 p. 351-357
1997

Light intensity affects growth and sexual maturation of Atlantic salmon (Salmo salar) postsmolts in sea cages

Frode Oppedal, Geir Lasse Taranger, Jan Erik Fosseidengen, Jon-Erik Juell, Tom Johnny Hansen
Aquatic Living Resources 10 p. 351-357

Poster

2017

The gill parasite Paramoeba perurans compromises aerobic scope, swimming capacity and ion balance in Atlantic salmon.

Malthe Hvas, Egil Karlsbakk, Frode Oppedal
2016

Freshwater sensitive attached copepodids.

Daniel William Wright, Frode Oppedal, Lars Helge Stien, Timothy David Dempster
2016

Development times of sea lice Leperophtheirus salmonis at different temperatures and its influence on dispersal patterns.

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

Differences among Atlantic salmon biologies in their susceptibility and behavioural response to infective sealice, Leperophtheirus salmonis, and the retention of lice.

Samantha Bui, Sussie Dalvin, Timothy David Dempster, Ole Fredrik Skulstad, Anna Wargelius, Frode Oppedal
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
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

Mediebidrag

2018

Rognkjeksen tåler ikke mer enn 16 grader

Malthe Hvas, Frode Oppedal
2018

Ny metode å skjerme laksen for lus

Oppedal, Frode
2018

Gir laksen luft på 10 m dyp

Oppedal, Frode
2016

Ny forskning reduserer lakselusa.

Oppedal, Frode
2015

Laksen er i stand til å håndtere forholdene til havs

Hans Vanhauwaert Bjelland, Frode Oppedal

Kapitler og bøker

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
2015

Exposed aquaculture in Norway: Technologies for robust operations in rough conditions

Hans Vanhauwaert Bjelland, Martin Føre, Pål Lader, David Kristiansen, Ingunn Marie Holmen, Arne Fredheim, Esten Ingar Grøtli, Dariusz Eirik Fathi, Frode Oppedal, Ingrid Bouwer Utne, Ingrid Schjølberg
2014

Snorkelmerd gir mindre lakselus

Frode Oppedal, Timothy David Dempster, Samantha Bui, Lars Helge Stien
p. 35-36
2011

Flow fields inside stocked fish cages and the near environment

Lars Gansel, Siri Rackebrandt, Frode Oppedal, Thomas McClimans
p. 201-209

Populærvitenskapelige artikler

2018

Lakselusens nauplier velger lavere temperaturer

Daniel William Wright, Thomas Crosbie, Sussie Dalvin, Frode Oppedal, Timothy Dempster
Norsk Fiskeoppdrett 11
2018

Slik fordeler luselarver seg i brakkvann

Daniel William Wright, Thomas Crosbie, Sussie Dalvin, Frode Oppedal, Timothy Dempster
Kyst.no
2017

Hvor mye vannstrøm tåler laksen på eksponerte lokaliteter?

Malthe Hvas, Ole Folkedal, Frode Oppedal
Norsk Fiskeoppdrett p. 28-33
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
2015

For høy vannstrøm kan påvirke vekst og velferd på eksponerte lokaliteter

Frida Solstorm, Frode Oppedal
Norsk Fiskeoppdrett 11 p. 30-33
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

Grensen for akseptable fall i oksygennivået i laksemerder øker med temperaturen.

Mette Remen, Thomas Torgersen, Frode Oppedal
Norsk Fiskeoppdrett
2012

Laksens vekst- og stressnivå påvirkes av svingende oksygenverdier.

Mette Remen, Frode Oppedal, Rolf Erik Olsen, Albert Imsland, Thomas Torgersen, Turid Synnøve Aas
Norsk Fiskeoppdrett
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
2011

Oppdrettsfisk tilpasser seg.

Thomas Torgersen, Mette Remen, Frode Oppedal, Ole Folkedal, Anne Aasjord, Jonatan Nilsson, Tore S Kristiansen
Havforskningsrapporten
2006

Søket etter nye stress og velfersmarkørar hjå Atlantisk laks

Frode Fridell, Bjørn Olav Kvamme, Ole Brix, F. Oppedal, RE Olsen, Geir Lasse Taranger
Norsk Fiskeoppdrett 11 p. 54-57

Faglige foredrag

2018

Forutsigbar utvikling av lakselus ved ulike temperaturer

Lars Are Hamre, Samantha Bui, Frode Oppedal, Rasmus Skern-Mauritzen, Sussie Dalvin
2018

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

Malthe Hvas, Ole Folkedal, Frode Oppedal
2018

Lakselus biologi og reproduksjon

Sussie Dalvin, Samantha Bui, Lars Are Hamre, Frode Oppedal
2018

Post infection development of Lepeophtheirus salmonis in temperatures from 3°C to 24°C

Lars Are Hamre, Samantha Bui, Frode Oppedal, Rasmus Skern, Sussie Dalvin
2018

Quantification of salmon lice larvae in the plankton

Samantha Bui, Rasmus Skern-Mauritzen, Mark Fordyce, Bengt Finstad, Frode Fassøy, Gunnvør Norði a, Tone Vågseth, Frode Oppedal
2018

Bruk av undervanns luftkuppel for oppdrett av laks i nedsenkte merder

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

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

EFFICIENCY OF SEA LICE PREVENTION TECHNOLOGIES IN A COMMERCIAL SETTING: SALMON WELFARE, INFESTATION LEVELS, AND TREATMENT FREQUENCIES.

Samantha Bui, Henrik Trengereid, Frode Oppedal
2017

Hvilke velferdsindikatorer skal brukes i ulike anleggskonsepter for lakseoppdrett?

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

La laksen fôre "seg selv"!

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

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

The gill parasite Paramoeba perurans compromises aerobic scope and swimming capacity in Atlantic salmon Salmo salar

Frode Oppedal, Malthe Hvas, Egil Karlsbakk
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

Network Analysis: Network Analysis: A key tool to investigate and manage connectivity of the salmon louse

Fransisca Samsing, Ingrid Askeland Johnsen, Frode Oppedal, Tim Dempster, Eric A. Treml
2017

Network Analysis A key tool to inves-gate and manage connec-vity of the salmon louse

Fransisca Samsing, Ingrid Askeland Johnsen, Frode Oppedal, Sussie Dalvin, Tim Dempster, Eric A. Treml
2017

Temperature and Development of Lepeophtheirus salmonis: Implications for management of the parasite

Sussie Dalvin, Samantha Bui, Francisca Samsing, Frode Oppedal, Tone Vågseth, Rasmus Skern-Mauritzen, Ingrid Askeland Johnsen, T Dempster, Lars Are Hamre
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
2017

Atlantic salmon behaviour and susceptibility to sea lice

Samantha Bui, Timothy David Dempster, Frode Oppedal
2016

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

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

Hva er akseptabel vannstrøm for laks i merder?

Frode Oppedal, David Solstorm, Frida Solstorm, Mette Remen
2016

Håndtering av lakselus ved høye og lave temperaturer

Sussie Dalvin, Francisca Samsing, Frode Oppedal, Ingrid Askeland Johnsen, Tone Vågseth, Tim Dempster
2016

Behaviour of Atlantic salmon in response to sea lice

Samantha Bui, Timothy David Dempster, Frode Oppedal
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

Hva er akseptabel vannstrøm for laks i merder?

Oppedal, Frode
2016

Merdmiljø, laks og pittelitt lus.

Oppedal, Frode
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

Dødelighet av ulik tid med ferskvannseksponering på alle stadier av lakselus.

Frode Oppedal, Daniel William Wright, Timothy David Dempster
2016

Hva er akseptabel vannstrøm for laks i merder?

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

Dyptsvømmende laks får mindre lus. Muligheter for og utfordringer med å holde laksen dypt. Erfaringer med snorkelmerd.

Oppedal, Frode
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

Kan dype lys og undervannsfôring benyttes for reduksjon av lusepåslag i merder?

Oppedal, Frode
2015

FÔRDOM - Luftkuppel, not-tak og undervannsfôring for oppdrett av laks unna overflatevannet.

Oppedal, Frode
2015

Undervannsmerd - Laksens svømmeblære og oppdrett av laks unna overflaten

Oppedal, Frode
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
2014

Go With the flow: Manipulating flow hydrodynamics to reduce infestation Levels with sea lice Lepeophtheirus salmonis in farmed Atlantic salmon

fransisca samsing, Frode Oppedal, David Solstorm, Timothy David Dempster
2014

Deformation of a large fish cage in high currents.

Klebert Pascal, Per Christian Endresen, Per Rundtop, Oystein Patursson, Heini Winthereig Rasmussen, David Johansson, Frode Oppedal
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

Drag og deformasjon på oppdrettsmerder i sjøen.

Lars Gansel, Frode Oppedal
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

Effect of water currents on postsmolt Atlantic salmon (Salmo salar).

Frida Maria Laursen, David Johansson, Frode Oppedal, Anders Fernø, Thomas Fraser, Rolf Erik Olsen
2014

Oksygentoleranse hos postsmolt laks; Effekt av temperatur og akklimering.

Mette Remen, Rolf Erik Olsen, Albert Imsland, Thomas Torgersen, 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

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

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

Hypoksi i lakseoppdrett - Praktiske konsekvenser.

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

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

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

Responses of caged salmon to farm environment.

Frode Oppedal, David Johansson, Frida Maria Laursen, Mette Remen, Ole Folkedal, Jonatan Nilsson, Lars Gansel, Øyvind Johan Korsøen, Timothy David Dempster, Lars Helge Stien
2014

Pushing cages allows field investigations under controlled flow conditions.

Frode Oppedal, Lars Gansel
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

Effect of water currents on postsmolt Atlantic salmon, Salmo salar

Frida Maria Laursen, David Johansson, Rolf Erik Olsen, Frode Oppedal, Anders Fernö
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

Metabolisme, fôrinntak, fordøyelse og vekst hos laksepostsmolt i syklisk hypoksi.

Mette Remen, Rolf Erik Olsen, Albert Imsland, Frode Oppedal
2012

Får oppdrettslaks nok oksygen i merdene?

Mette Remen, Thomas Torgersen, Rolf Erik Olsen, Albert Imsland, Turid Synnøve Aas, Frode Oppedal
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
2011

Nyheter fra forskningsprosjektet Topilouse

Randi Grøntvedt, Erik Høy, Pascal Klebert, Frode Oppedal, Daniel Delgado Jimenez, Peter Andreas Heuch
2010

Periodisk hypoksi i laksemerder.

Mette Remen, Rolf Erik Olsen, Thomas Torgersen, Frode Oppedal
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
2009

Stressrespons og habituering til fluktuerende hypoksi hos laks i sjøvann.

Mette Remen, Rolf Erik Olsen, Frode Oppedal
2009

Habituation and acclimation of Atlantic salmon Salmo salar L. subjected to fluctuating hypoxia.

Mette Remen, Frode Oppedal, Rolf Erik Olsen
1998

Light intensity affects growth and sexual maturation of Atlantic salmon (Salmo salar L.) postsmolts in sea cages

F. Oppedal, G.L. Taranger, Jon-Erik Juell, T. Hansen

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
2013

Snorkel kan bekjempe lakselusproblem

Oppedal, Frode
Intervju Dagens Næringsliv

Rapporter og avhandlinger

2018

Effect of step salinity gradients on salmon lice (Lepeophtheirus salmonis) larvae behaviour and dispersal II: Impact of thermoclines on the vertical distribution of salmon lice larvae (Lepeophtheirus salmonis)

Thomas Crosbie, Timothy Dempster, Frode Oppedal, Daniel William Wright
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
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
2016

Identifying the nature, extent and duration of critical production periods for Atlantic salmon in Macquarie Harbour, Tasmania, during summer.

Timothy David Dempster, Daniel William Wright, Frode Oppedal
2016

Snorkelmerd: Produksjonseffektivitet, adferd og velferd.

Frode Oppedal, Timothy David Dempster, Lars Helge Stien
2011

Feed utilisation in Atlantic salmon kept at fluctuating oxygen saturation. A CREATE project

Turid Synnøve Aas, Mette Remen, Frode Oppedal, Tor Johannes Hjertnes
2003

Influence of artificial light on Atlantic salmon (Salmo salar L.) in seawater

Oppedal, Frode
1995

Vekst, kvalitet, kjønnsmodning og atferd hos vårutsatt regnbueørret, (Oncorhynchus mykiss) holdt under naturlig og kontinuerlig lysregime i sjøvann. Hovedfagsoppgave i generell akvakultur, Cand. scient

Oppedal, Frode

Arbeider med

Present focus as a professor scientist is on salmon welfare and how aquaculture farm conditions and management should be based on biological premises. Main research field focuses on sea cage environments, salmon behavioural responses, thresholds for coping and welfare in commercial, natural fluctuating and artificial settings.

KW: Animal welfare, fish welfare, salmon behaviour, cage environment, sexual maturation, growth, farm management, feeding, coping, environment, fish behaviour

Curriculum Vitae

  • Overton, K., Samsing, F., Oppedal, F., Stien L.H., Dempster, T., 2017. Lowering treatment temperature reduces salmon mortality: a new way to treat with hydrogen peroxide in aquaculture. Pest Management Science DOI: 10.1002/ps.4751
  • Bui, S., Oppedal, F., Samsing, F., Dempster, T., 2017a. Behaviour in Atlantic salmon confers protection against an ectoparasite. Journal of Zoology. doi:10.1111/jzo.12498
  • Bui, S., Dalvin, S., Skulstad, O.F., Wargelius, A., Dempster, T., Oppedal, F., 2017b. Susceptibility, behaviour, and retention of the parasitic salmon louse (Lepeophtheirus salmonis) differ with Atlantic salmon population origin. Journal of Fish Diseases 2017;00:1–12. https://doi.org/10.1111/jfd.12707
  • Hvas, M., Oppedal, F., 2017c. Sustained swimming capacity of Atlantic salmon. Aquacult. Environ. Interact. 9, 361-369.
  • Wright, D.W. Nowak, B., Oppedal, F., Bridle, A., Dempster, T., 2017b. Free-living Neoparamoeba perurans depth distribution is mostly uniform in salmon cages, but reshaped by stratification and potentially extreme fish crowding. Aquaculture Environment Interactions 9, 269-279.
  • Samsing, F., Johnsen I., Dempster, T., Oppedal, F., Treml, E.A., 2017. Network analysis reveals strong seasonality in the dispersal of a marine parasite and identifies areas for coordinated management. Landscape Ecology  https://doi.org/10.1007/s10980-017-0557-0
  • Hansen, T.J., Fjelldal, P.G., Folkedal, O., Vågseth, T., Oppedal, F., 2017. Effects of light source and intensity on sexual maturation, growth and swimming behaviour of Atlantic salmon in sea cages. Aquacult. Environ. Interact. 9, 193-204
  • Hvas, M., Folkedal, O., Imsland, A., Oppedal, F., 2017b. The effect of thermal acclimation on aerobic scope and critical swimming speed in Atlantic salmon Salmo salar. Journal of Experimental Biology 220, 2757-2764.
  • Wright, D.W. Stien, L.H., Dempster, T., Vågseth, T., Nola, V., Oppedal, F., 2017a. '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. Preventive Veterinary Medicine 140, 97-105.
  • Oppedal, F., Samsing, F., Dempster, T., Wright, D.W., Bui, S., Stien, L.H., 2017. Sea lice infestation levels decrease with deeper ‘snorkel’ barriers in Atlantic salmon sea-cages. Pest Management Science 73, 1935-1943.
  • Oldham, T., Dempster, T., Fosse, J.O., Oppedal, F., 2017. Oxygen gradients affect behaviour of caged Atlantic salmon Salmo salar. Aquacult. Environ. Interact. 9, 145-153
  • Hvas, M., Folkedal, O., Solstorm, D., Vågseth, T., Fosse, J.O., Gansel, L.C., Oppedal, F., 2017a. Assessing swimming capacity and schooling behaviour in farmed Atlantic salmon Salmo salar with experimental push-cages. Aquaculture 473, 423-429.
  • Remen, M., Solstorm, F., Bui, S., Klebert, P., Vågseth, T., Solstorm, D., Hvas, M., Oppedal, F., 2016. Critical swimming speed in groups of Atlantic salmon Salmo salar. Aquaculture Environment Interactions 8, 659-664.
  • Remen, M., Sievers, M., Torgersen, T., Oppedal, F., 2016. The oxygen threshold for maximal feed intake of Atlantic salmon post-smolts is highly temperature-dependent. Aquaculture 464, 582-592
  • Bui, S., Oppedal, F., Stien, L.H., Dempster, T., 2016. Sea lice infestation level alters salmon swimming depth in sea-cages. Aquacult. Environ. Interact. 8, 429-435
  • Samsing, F., Oppedal, F., Dalvin, S., Johnsen, I., Vågseth, T., Dempster, T., 2016. Salmon lice (Lepeophtheirus salmonis) development times, body size and reproductive outputs follow universal models of temperature dependence. Can. J. Fish. Aquat. Sci. 73, 1841-1851
  • Samsing, F., Johnsen I., Stien, L.H., Oppedal, F., Albretsen, J., Asplin, L., Dempster, T., 2016. Predicting the effectiveness of depth-based technologies to prevent salmon lice infection using a dispersal model. Prev. Vet. Med. 129, 48-57
  • Bui, S., Dempster, T., Remen, M., Oppedal, F., 2016. Effect of ectoparasite infestation density and life-history stages on the swimming performance of Atlantic salmon Salmo salar. Aquacult. Environ. Interact. 8, 387-395
  • Solstorm, F., Solstorm, D., Oppedal, F., Fjelldal, P.G., 2016. The vertebral column and exercise in Atlantic salmon – regional effects. Aquaculture 461, 9-16
  • Wright, D.W., Oppedal, F., Dempster, T., 2016. Early-stage sea lice recruits on Atlantic salmon are freshwater-sensitive. Journal of Fish Diseases 39, 1179–1186.
  • Stien, L.H., Dempster, T., Bui, S., Glaropoulos, A., Fosseidengen, J.E., Wright, D., Oppedal, F., 2016. ‘Snorkel’ sea lice barrier technology reduces sea lice loads on harvest-sized Atlantic salmon with minimal welfare impacts. Aquaculture 458, 29-37.
  • Solstorm, F., Solstorm, D., Oppedal, F., Olsen, R.E., Stien, L.H., Fernö, A., 2016. Not too slow, not too fast: water currents affect group structure, aggression and welfare in post-smolt Atlantic salmon, Salmo salar. Aquacult. Environ. Interact. 8, 339-347.
  • Bjelland, H., Kristiansen, D., Holmen, IM, Fredheim, A., Esten, I., Dariusz, EF., Oppedal, F., Utne, I., Schjølberg, I., 2015. Exposed Aquaculture in Norway. OCEANS 2015-MTS/IEEE Washington, 1-10.
  • Solstorm, F., Solstorm, D., Oppedal, F., Fernö, A., Fraser, T.W.K., Olsen, R.E., 2015. Fast water currents reduce production performance of postsmolt Atlantic salmon, Salmo salar. Aquacult. Environ. Interact. 7, 125-134.
  • Remen, M., Nederlof, M.A.J., Folkedal, O., Thorsheim, G., Sitjà-Bobadilla, A., Pérez-Sánchez, J., Oppedal, F., Olsen, R.E., 2015. Effect of temperature on the metabolism, behaviour and oxygen requirements of Sparus aurata. Aquacult. Environ. Interact. 7, 115-123
  • Wright, D.W., Glaropoulos, A., Solstorm, D., Stien, L.H., Oppedal, F., 2015. Atlantic salmon Salmo salar instantaneously follow vertical light movements in sea cages. Aquacult. Environ. Interact. 7, 61-65.
  • Samsing, F., Oppedal, F., Solstorm, D., Solstorm, F., Dempster, T., 2015. Gone with the flow: current velocities mediate parasitic infestation of an aquatic host. International Journal for Parasitology 45, 559-565
  • Wright, D.W., Nowak, B., Oppedal, F., Bridle, A., Dempster, T., 2015. Depth distribution of the amoebic gill disease agent, Neoparamoeba perurans, in salmon sea-cages. Aquacult. Environ. Interact. 7, 67-74.
  • Hansen, T.J., Olsen, R.E., Stien, L., Oppedal, F., Torgersen, T., Breck, O., Remen, M., Vågseth, T., Fjelldal, P.G., 2015. Effect of water oxygen level on performance of diploid and triploid Atlantic salmon post-smolts reared at high temperature. Aquaculture 435, 354-360
  • Samsing, F., Oppedal, F., Johansson, D., Bui, S., Dempster, T., 2014. High host densities dilute sea lice Lepeophtheirus salmonis loads on individual Atlantic salmon, but do not reduce lice infection success. Aquacult. Environ. Interact. 6, 81-89
  • Gansel, L., Rackebrandt, S., Oppedal, F., McClimans, T.A., 2014. Flow fields inside stocked fish cages and the near environment. Journal of Offshore Mechanics and Arctic Engineering 136, 031201/1-8
  • Stien, L., Fosseidengen, J.E., Malm, M., Sveier, H., Torgersen, T., Wright, D.W., Oppedal, F., 2014. Low intensity light of different colours modifies Atlantic salmon depth use. Aquacultural Engineering 62, 42-48.
  • Fraser, T.W.K., Fjelldal, P.G., Hansen, T.J., Oppedal, F., Olsen, R.E., Vågseth, T., Remen, M., 2014. Aplasia of the septum transversum has no effect on plasma biochemistry following an acute hypoxic event in Atlantic salmon. Diseases of Aquatic Organism 111, 87-92
  • Johansson, D., Laursen, F., Fernö, A., Fosseidengen, J.E., Klebert, P., Stien, L.H., Vågseth, T., Oppedal, F., 2014. The interaction between water currents and salmon swimming behaviour in sea cages. PLoS ONE 9(5): e97635. doi:10.1371/journal.pone.0097635
  • Frenzl, B., Stien, L.H., Cockerill, D., Oppedal F., Richards, R.H., Shinn, A.P., Bron, J.E., Migaud, H. 2014. Manipulation of farmed Atlantic salmon swimming behaviour through the adjustment of lighting and feeding regimes as a tool for salmon lice control. Aquaculture 424-425, 183-188.
  • Remen, M., Aas, T.S., Vågseth, T., Torgersen, T., Olsen, R.E., Imsland, A.K., Oppedal, F., 2014. Production performance of Atlantic salmon post-smolts in cyclic hypoxia and following compensatory growth. Aquaculture Research 45, 1355-1366 doi:10.1111/are.12082.
  • Remen, M., Oppedal, F., Imsland, A., Olsen, R.E., Torgersen, T., 2013. Hypoxia tolerance thresholds for post-smolt Atlantic salmon: Dependency of temperature and hypoxia acclimation. Aquaculture 416, 41-47.
  • Korsøen, Ø.J., Fosseidengen, J.E., Oppedal, F., Stien, L.H., Karlsen, Ø., Kristiansen, T.S., Dempster, T., 2013. Towards cod without spawning: artificial continuous light in submerged sea-cages maintains growth and delays sexual maturation for farmed Atlantic cod Gadus morhua. Aquaculture Environment Interactions 3, 245-255.
  • Nilsson, J., Folkedal, O., Fosseidengen, J.E., Stien, L.H., Oppedal, F. 2013. PIT tagged individual Atlantic salmon registered at static depth positions in a sea cage: Vertical size stratification and implications for fish sampling. Aquacult. Eng. 55, 32-36.
  • Bui, S., Oppedal, F., Korsøen, Ø.J., Sonny, D., Dempster, T., 2013. Group behavioural responses of Atlantic salmon (Salmo salar L.) to light, infrasound and sound stimuli. PLOS ONE 8(5): e63696. doi:10.1371/journal.pone.0063696
  • Føre, M., Dempster, T., Alfredsen, J.A., Oppedal, F. 2013. Modelling of Atlantic salmon (Salmo salar L.) behaviour in sea-cages: Using artificial light to control swimming depth. Aquaculture 388-391, 137-146
  • Bui, S., Oppedal, F., Korsøen, Ø.J., Sonny, D., Dempster, T., 2013. Modifying Atlantic salmon (Salmo salar L.) behaviour to facilitate parasite control techniques: applying light or feed during submergence increases surface behaviours. Aquacult. Environ. Interact. 3, 125-133
  • Klebert,  P., Gansel, L.,  Lader, P., Oppedal, F., 2013. Flow hydrodynamics through nets and floating cages: a review. Ocean Engineering 58, 260-274.
  • Papandroulakis, N., Lika, K., Kristiansen, T., Oppedal, F., Divanach, P., Pavlidis, M., 2013. Behaviour of European sea bass, Dicentrarchus labrax L., in cages - impact of early life rearing conditions and management. Aquacult. Res. 45, 1545-1558
  • Stien, L., Bracke, M., Folkedal, O., Nilsson, J., Oppedal, F., Torgersen, T., Kittilsen, S., Midtlyng, P., Øverli, Ø., Kristiansen, T., 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. Reviews in Aquaculture 5, 33-57
  • Skulstad, O.F., Karlsen, Ø., Fosseidengen, J.E., Kristiansen, T., Taranger, G.L. and Oppedal, F., 2013. Vertical distribution and sexual maturation in cage-farming of Atlantic cod (Gadus morhua L.) exposed to natural or continuous light. Aquaculture Research 44, 903-917.
  • Stien, L. H., Nilsson, J., Oppedal, F., Kristiansen, T.S., Lien, A.M., Folkedal, O. 2012. Skirt around a salmon sea cage to reduce infestation of salmon lice resulted in low oxygen levels. Aquacultural Engineering 51, 21-25.
  • Olsen, R.E., Oppedal, F., Tenningen, M., Vold, A., 2012. Scale loss may be a contributing factor to mortality experienced of herring after slipping from purse seines. Fisheries Research 129-130, 21-27.
  • Korsøen, Ø., Fosseidengen, J.E., Kristiansen, T.S., Oppedal, F., Bui, S., Dempster, T., 2012b. Atlantic salmon (Salmo salar) in a submerged sea-cage adapt rapidly to re-fill their swim bladders in an underwater air filled dome. Aquacult. Eng. 51, 1-6.
  • Folkedal, O., Stien, L.H. Nilsson, J., Torgersen, T., Fosseidengen, J.E., Oppedal, F., 2012c. Sea caged Atlantic salmon display size-dependent swimming depth. Aquatic Living Resources 25, 143-149.
  • Korsøen, Ø.J., Dempster, T., Oppedal, F., Kristiansen, T.S., 2012a. Individual variation in swimming depth and growth in Atlantic salmon (Salmo salar L.) subjected to submergence in sea-cage. Aquaculture 334-337, 142–151.
  • Remen, M., Oppedal, F., Torgersen, T., Imsland, A., Olsen, R.E., 2012. Effects of cyclic environmental hypoxia on physiology and feed intake of post-smolt Atlantic salmon: Initial response and acclimation. Aquaculture 326-329, 148-155.
  • Folkedal, O., Stien, L.H., Torgersen, T., Oppedal, F., Olsen, R.E., Fosseidengen, J.E., Braithwaite, V., Kristiansen, T.S., 2012b. Food anticipatory behaviour as an indicator of stress response and recovery in Atlantic salmon post-smolt after exposure to acute temperature fluctuation. Physiology and Behaviour 105, 350-356
  • Folkedal, O., Torgersen, T., Olsen, R.E., Fernö, A., Nilsson, J., Oppedal, F., Stien, L.H., Kristiansen, T.S., 2012a. Duration of effects of acute environmental changes on food anticipatory behaviour, feed intake, oxygen consumption, and cortisol release in Atlantic salmon parr. Physiology and Behaviour 105, 283-291
  • Dempster, T., Kristiansen, T.S., Korsøen, Ø.J., Fosseidengen, J.E., Oppedal, F., 2011. Technical note: Modifying Atlantic salmon (Salmo salar) behaviour to facilitate innovation of parasitic sea lice control techniques. J. Animal Sci. 89, 4281-4285
  • Oppedal, F., Vågseth., T., Dempster, T., Juell, J.E., Johansson, D., 2011b. Stocking density affects seasonal variation in observed swimming density of caged Atlantic salmon measured by echo sounders. Aquaculture 315, 361-368.
  • Oppedal, F., Dempster, T., Stien, L., 2011a. Environmental drivers of Atlantic salmon behaviour in sea-cages: a review. Aquaculture 311, 1-18.
  • Folkedal., O., Torgersen, T., Nilsson, J., Oppedal, F., 2010. Habituation rate and capacity of Atlantic salmon (Salmo salar) parr to sudden transitions from darkness to light. Aquaculture 307, 170-172.
  • Bratland, S., Stien. L.H., Braithwaite, V., Juell, J-E., Folkedal, O., Nilsson, J., Oppedal, F., Kristiansen, T.S. 2010. From fright to anticipation: Using aversive light stimuli to investigate reward conditioning in large groups of Atlantic salmon (Salmo salar L.). Aquaculture International 18, 991-1001.
  • Korsøen Ø., Dempster, T., Fjelldal P.G., Oppedal F., Kristiansen, T., 2009. Long-term culture of Atlantic salmon (Salmo salar L.) in submerged cages during winter affects behaviour, growth and condition. Aquaculture 296, 373-381.
  • Johansson, D., Ruohonen, K., Juell, J-E. and Oppedal, F., 2009. Swimming depth and thermal history of individual Atlantic salmon (Salmo salar L.) in production cages under different ambient temperature conditions. Aquaculture 290, 296-303.
  • Dempster, T., Korsøen, Ø., Folkedal, O., Juell, J-E. and Oppedal, F., 2009. Submergence of Atlantic salmon (Salmo salar L.) in commercial scale sea-cages: a potential short-term solution to poor surface conditions. Aquaculture 288, 254-263.
  • Rungruangsak-Torrissen, K., Sunde, J., Berg A.E., Nordgarden, U., Fjelldal P.G., and Oppedal, F., 2009. Digestive efficiency, free amino acid pools and quality of growth performance in Atlantic salmon (Salmo salar L.) affected by light regimes and vaccine types. Fish Physiology and Biochemistry 35, 255-272.
  • Stien, L.H., Bratland, S., Austevoll, I., Oppedal, F. and Kristiansen, T.S., 2007. A video analysis procedure for assessing vertical fish distribution in aquaculture tanks. Aquacultural Engineering 37, 115-124.
  • Oppedal, F., Juell, J.-E. and Johansson, D., 2007. Thermo- and photoregulatory swimming behaviour of caged Atlantic salmon: Implications for photoperiod management and fish welfare. Aquaculture 265, 70-81.
  • Johansson, D., Juell, J.-E., Oppedal, F., Stiansen J.E. and Ruohonen, K., 2007. The influence of the pycnocline and cage resistance on current flow, oxygen flux and swimming behaviour of Atlantic salmon (Salmo salar L.) in production cages. Aquaculture 265, 271-287.
  • Johansson, D., Ruohonen., K., Kiessling, D., Oppedal, F., Stiansen, J.E., Kelly, M., and Juell, J-.E., 2006. Effect of environmental factors on swimming depth preferences of Atlantic salmon (Salmo salar L.) and temporal and spatial variations in oxygen levels in sea cages at a fjord site. Aquaculture 254, 594-605.
  • Oppedal, F., Berg, A., Olsen, R.E., Taranger, G.L., and Hansen, T., 2006. Photoperiod in seawater influence seasonal growth and chemical composition in autumn sea-transferred Atlantic salmon (Salmo salar L.) given two vaccines. Aquaculture 254, 396-410.
  • Knudsen, F.R., Fosseidengen, J.E., Oppedal, F., Karlsen, Ø and Ona, E., 2004. Hydroacustic monitoring of fish in sea cages; target strength (TS) measurements on Atlantic salmon (Salmo salar). Fisheries Research 69, 205-209.
  • Nordgarden, U., Oppedal, F., Taranger G.L., Hemre, G.-I. and Hansen, T., 2003. Seasonally changing metabolism in Atlantic salmon (Salmo salar L.) I – Growth and feed conversion ratio. Aquaculture Nutrition 9, 287-293.
  • Juell, J.-E., Oppedal, F., Boxaspen, K. and Taranger G.L., 2003. Submerged light increases swimming depth and reduces fish density of Atlantic salmon Salmo salar L. in production cages. Aquaculture Research 34, 469-477.
  • Hevrøy, E.M., Boxaspen, K., Oppedal, F., Taranger G.L. and Holm, J.C., 2003. The effect of artificial light treatment and depth on the infestation of the sea louse L. salmonis on Atlantic salmon (Salmo salar) culture. Aquaculture 220, 1-14.
  • Oppedal, F., Taranger, G.L, Hansen, T. 2003. Growth performance and sexual maturation in diploid and triploid Atlantic salmon (Salmo salar L.) in seawater tanks exposed to continuous light or natural photoperiod. Aquaculture 215, 145-162.
  • Oppedal, F., Juell, J.E, Taranger, G.L. and Hansen, T., 2001. Artificial light and season affect vertical distribution and swimming behaviour of post-smolt Atlantic salmon in sea cages. Journal of Fish Biology 58, 1570-1584.
  • Oppedal, F., Taranger, G.L., Juell, J.E. and Hansen, T., 1999. Growth, osmoregulation and sexual maturation of underyearling Atlantic salmon smolt (Salmo salar L.) exposed to different intensities of continuous light in sea cages. Aquaculture Research 30, 491-499.
  • Oppedal, F., Taranger, G.L., Juell, J.E, Fosseidengen, J.E. and Hansen, T., 1997. Light intensity affects growth and sexual maturation of Atlantic salmon (Salmo salar) postsmolts in sea cages.  Aquatic Living Resources 10, 351-357.

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