Ørjan Karlsen

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Telefon: 92293930
Avdeling: Reproduksjon og utviklingsbiologi

Curriculum Vitae

Stilling

Seniorforsker (forsker 1183)

Utdannelse

Cand. Scient. i 1992 ved  Institutt for Fiskeri- og Marinbiologi, Universitetet i Bergen, Norge. Tittel på oppgaven: Vekstmønster og ultralydestimert organutvikling gjennom første gytesesong hos torsk (Gadus morhua L.) i oppdrett. [Growth pattern and ultrasound based organ development through first spawning season in farmed cod (Gadus morhua L.)].

Dr. Scient. i 1999 ved Institutt for Fiskeri- og Marinbiologi, Universitetet i Bergen, Norge. Tittel på Dr. Scient. avhandlingen: Hatching and ontogeny in marine fishes: Consequences for variability and viability at first feeding

Publikasjoner

Vitenskapelige artikler (NVI)

2018

Sea trout adapt their migratory behaviour in response to high salmon lice concentrations

Elina Halttunen, Karl Øystein Gjelland, Sandra Hamel, Rosa Maria Serra-Llinares, Rune Nilsen, Pablo Arechavala-Lopez, Jofrid Skardhamar, Ingrid Askeland Johnsen, Lars Asplin, Ørjan Karlsen, Pål Arne Bjørn, Bengt Finstad
Journal of Fish Diseases 41 p. 953-967
2017

Salmon lice infestations on sea trout predicts infestations on migrating salmon post-smolts

Knut Wiik Vollset, Elina Halttunen, Bengt Finstad, Ørjan Karlsen, Pål Arne Bjørn, Ian Dohoo
ICES Journal of Marine Science 74 p. 2354-2363
2017

Oil droplet fouling and differential toxicokinetics of polycyclic aromatic hydrocarbons in embryos of Atlantic haddock and cod

Lisbet Sørensen, Elin Sørhus, Trond Nordtug, John P. Incardona, Tiffany Linbo, Laura Giovanetti, Ørjan Karlsen, Sonnich Meier
PLoS ONE 12:e0180048 (Ja) p. 1-26
2017

Salmon lice infestations on sea trout predicts infestations on migrating salmon post-smolts

Knut Wiik Vollset, Elina Halttunen, Bengt Finstad, Ørjan Karlsen, Pål Arne Bjørn, Ian Dohoo
ICES Journal of Marine Science 74 (Ja) p. 2354-2363
2017

Disentangling the role of sea lice on the marine survival of Atlantic salmon

Knut Wiik Vollset, Ian Dohoo, Ørjan Karlsen, Elina Halttunen, Bjørn Olav Kvamme, Bengt Finstad, Vidar Wennevik, Ola Håvard Diserud, Andrew Bateman, Kevin D. Friedland, Shad Kenneth Mahlum, Christian Jørgensen, Lars Qviller, Martin Krkosek, Åse Åtland, Bjørn Torgeir Barlaup
ICES Journal of Marine Science 75 (Ja) p. 50-60
2017

Ossification of Atlantic cod (Gadus morhua) – Developmental stages revisited

Øystein Sæle, Trine Haugen, Ørjan Karlsen, Terje van der Meeren, Grete Bæverfjord, Kristin Hamre, Ivar Rønnestad, Mari Moren, Kai Kristoffer Lie
Aquaculture 468 Part 1 (Ja) p. 524-533
2017

The effect of dietary chitin on growth and nutrient digestibility in farmed Atlantic cod, Atlantic salmon and Atlantic halibut

Ørjan Karlsen, Heidi Amlund, Arne Erik Berg, Rolf Erik Olsen
Aquaculture Research 48 (Ja) p. 123-133
2017

Timecourse of oocyte development in saithe Pollachius virens

Jon Egil Skjæraasen, Jennifer Ann Devine, Jane Aanestad Godiksen, Merete Fonn, Håkon Magne Otterå, Olav Sigurd Kjesbu, Birgitta Norberg, Øystein Langangen, Ørjan Karlsen
Journal of Fish Biology 90 (Ja) p. 109-128
2016

The ontogeny and brain distribution dynamics of the appetite regulators NPY, CART and pOX in larval Atlantic cod (Gadus morhua L.)

My Dung Hoang Thi Le, Anna Rita Angotzi, Lars O.E. Ebbesson, Ørjan Karlsen, Ivar Rønnestad
PLoS ONE 11 (Ja)
2016

First feed affects the expressions of microRNA and their targets in Atlantic cod

Teshome Tilahun Bizuayehu, Tomasz Furmanek, Ørjan Karlsen, Terje van der Meeren, Rolf Edvardsen, Ivar Rønnestad, Kristin Hamre, Steinar Daae Johansen, Igor Babiak
British Journal of Nutrition 115 (Ja) p. 1145-1154
2016

Performance of triploid Atlantic cod (Gadus morhua L.) in commercial aquaculture

Håkon Magne Otterå, Anders Thorsen, Ørjan Karlsen, Per Gunnar Fjelldal, Hugh Craig Morton, Geir Lasse Taranger
Aquaculture 464 (Ja) p. 699-709
2016

The two-step development of a duplex retina involves distinct events of cone and rod neurogenesis and differentiation

Ragnhild Valen, Mariann Eilertsen, Rolf Edvardsen, Tomasz Furmanek, Ivar Rønnestad, Terje van der Meeren, Ørjan Karlsen, Tom Ole Nilsen, Jon Vidar Helvik
Developmental Biology 416 (Ja) p. 389-401
2016

Crude oil exposures reveal roles for intracellular calcium cycling in haddock craniofacial and cardiac development

Elin Sørhus, John P. Incardona, Ørjan Karlsen, Tiffany Linbo, Lisbet Sørensen, Trond Nordtug, Terje van der Meeren, Anders Thorsen, Maja Thorbjørnsen, Sissel Jentoft, Rolf Edvardsen, Sonnich Meier
Scientific Reports 6 (Ja) p. 1-21
2015

1H NMR metabolic profiling of cod (Gadus morhua) larvae: potential effects of temperature and diet composition during early developmental stages

Matilde Skogen Chauton, Trine Falck Galloway, Elin Kjørsvik, Trond Røvik Størseth, Velmurugu Puvanendran, Terje van der Meeren, Ørjan Karlsen, Ivar Rønnestad, Kristin Hamre
Biology Open 4 (Ja) p. 1671-1678
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 (Ja) p. 8-13
2015

Unexpected interaction with dispersed crude oil droplets drives severe toxicity in atlantic haddock embryos

Elin Sørhus, Rolf Edvardsen, Ørjan Karlsen, Trond Nordtug, Terje van der Meeren, Anders Thorsen, Christopher Peter Harman, Sissel Jentoft, Sonnich Meier
PLoS ONE 10:e0124376 p. 1-21
2015

Diet affects the redox system in developing Atlantic cod (Gadus morhua) larvae

Samuel Penglase, Rolf Edvardsen, Tomasz Furmanek, Ivar Rønnestad, Ørjan Karlsen, Terje van der Meeren, Kristin Hamre
Redox Biology 5 (Ja) p. 308-318
2015

Copepods enhance nutritional status, growth and development in Atlantic cod (Gadus morhua L.) larvae – can we identify the underlying factors?

Ørjan Karlsen, Terje van der Meeren, Ivar Rønnestad, Anders Mangor-Jensen, Trine Falck Galloway, Elin Kjørsvik, Kristin Hamre
PeerJ 3 (Ja)
2015

Risk assessment of the environmental impact of Norwegian Atlantic salmon farming

Geir Lasse Taranger, Ørjan Karlsen, Raymond Bannister, Kevin Glover, Vivian Husa, Egil Karlsbakk, Bjørn Olav Kvamme, Karin Kroon Boxaspen, Pål Arne Bjørn, Bengt Finstad, Abdullah Sami Madhun, Hugh Craig Morton, Terje Svåsand
ICES Journal of Marine Science 72 p. 997-1021
2014

Impacts of wild fishes attracted to open-cage salmonid farms in Norway

Ingebrigt Uglem, Ørjan Karlsen, Pablo Sánchez-Jerez, Bjørn-Steinar Sæther
Aquaculture Environment Interactions 6 (Ja) p. 91-103
2014

Copepod production in a saltwater pond system: A reliable method for achievement of natural prey in start-feeding of marine fish larvae

Terje van der Meeren, Ørjan Karlsen, Penny Lee Liebig, Anders Mangor-Jensen
Aquacultural Engineering 62 (Ja) p. 17-27
2014

Continuous light affects onset of puberty and associated changes in pituitary gonadotropin subunit transcript levels, and plasma estradiol-17β and testosterone levels in Atlantic cod (Gadus morhua L.) females

Ørjan Karlsen, Christian Mittelholzer, Eva Andersson, Birgitta Norberg, Geir Lasse Taranger
Aquaculture 424-425 (Ja) p. 95-103
2013

Fertility of gynogenetic Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Håkon Magne Otterå, Anders Thorsen
Journal of Applied Ichthyology 29 p. 1292-1296
2013

Effects of light regime on diurnal plasma melatoning levels and vertical distribution in farmed Atlantic cod (Gadus morhua L.)

Ole Fredrik Skulstad, John Taylor, Andrew Davie, Herve Migaud, Tore S Kristiansen, Ian Mayer, Geir Lasse Taranger, Rolf Erik Olsen, Ørjan Karlsen
Aquaculture 414-415 (Ja) p. 280-287
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 (Ja) p. 245-255
2013

Cortisol treatment of prespawning female cod affects cytogenesis related factors in eggs and embryos

Lene Kleppe, Ørjan Karlsen, Rolf Edvardsen, Birgitta Norberg, Eva Andersson, Geir Lasse Taranger, Anna Wargelius
General and Comparative Endocrinology 189 (Ja) p. 84-95
2013

The effect of triploidization of Atlantic cod (Gadus morhua L.) on survival, growth and deformities during early life stages

Ingegjerd Opstad, Per Gunnar Fjelldal, Ørjan Karlsen, Anders Thorsen, Tom Johnny Hansen, Geir Lasse Taranger
Aquaculture 388 (Ja) p. 54-59
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 (Ja) p. 903-917
2013

Marine ash-products influence growth and feed utilization when Atlantic cod Gadus morhua L. are fed plant-based diets

Ann-Cecilie Hansen, Grethe Rosenlund, Ørjan Karlsen, Rolf Erik Olsen, Gro Ingunn Hemre
Journal of Applied Ichthyology 29 (Ja) p. 532-540
2013

The effect of dietary chitin on the autochthonous gut bacteria of Atlantic cod (Gadus morhua L.)

Zhigang Zhou, Ørjan Karlsen, Suxu He, Rolf Erik Olsen, Bin Yao, Einar Ringø
Aquaculture Research 44 (Ja) p. 1889-1900
2012

The effect of dietary lipid content and stress on egg quality in farmed Atlantic cod Gadus morhua

André Sture Bogevik, Silvestre Ramos Natario, Ørjan Karlsen, Anders Thorsen, Kristin Hamre, Grethe Rosenlund, Birgitta Norberg
Journal of Fish Biology 81 (Ja) p. 1391-1405
2012

Environmental regulation of individual depth on a cod spawning ground

Justin James Meager, Jon Egil Skjæraasen, Ørjan Karlsen, Svein Løkkeborg, Ian Mayer, Kathrine Michalsen, Trygve Nilsen, Anders Fernø
Aquatic Biology 17 (Ja) p. 211-221
2011

Induction of meiotic gynogenesis in Atlantic cod, Gadus morhua (L.)

Håkon Magne Otterå, Anders Thorsen, Stefano Peruzzi, Geir Dahle, Tom Johnny Hansen, Ørjan Karlsen
Journal of Applied Ichthyology 27 (Ja) p. 1298-1302
2011

Pituitary gonadotropin and testicular gonadotropin receptor expression in Atlantic cod (Gadus morhua L.) during the first reproductive season: Effects of photoperiod modulation

Fernanda Ferreira Loureiro de Almeida, Eva Andersson, Christian Mittelholzer, Ørjan Karlsen, Geir Lasse Taranger, Rüdiger W. Schulz
General and Comparative Endocrinology 173 p. 111-119
2011

Do plant-based diets for Atlantic cod (Gadus morhua L.) need additions of crystalline lysine or methionine?

Ann-Cecilie Hansen, Gro Ingunn Hemre, Ørjan Karlsen, Wolfgang Koppe, Grethe Rosenlund
Aquaculture Nutrition 17 (Ja) p. E362-E371
2011

Extreme spawning-site fidelity in Atlantic cod

Jon Egil Skjæraasen, Justin James Meager, Ørjan Karlsen, Jeffrey A. Hutchings, Anders Fernø
ICES Journal of Marine Science 68 p. 1472-1477
2010

Energy dilution with α-cellulose in diets for Atlantic cod (Gadus morhua L.) juveniles — Effects on growth, feed intake, liver size and digestibility of nutrients

Anette Lekva, Ann-Cecilie Hansen, Grethe Rosenlund, Ørjan Karlsen, Gro Ingunn Hemre
Aquaculture 300 p. 169-175
2010

Control of puberty in farmed fish

Geir Lasse Taranger, Manuel Carrillo, Rüdiger W. Schulz, Pascal Fontaine, Silvia Zanuy, Alicia Felip, Finn-Arne Weltzien, Sylvie Dufour, Ørjan Karlsen, Birgitta Norberg, Eva Andersson, Tom Hansen
General and Comparative Endocrinology 165 (Ja) p. 483-515
2010

Mating competition between farmed and wild cod Gadus morhua

Jon Egil Skjæraasen, Justin James Meager, Ørjan Karlsen, Ian Mayer, Geir Dahle, Geir Rudolfsen, Anders Fernø
Marine Ecology Progress Series 412 (Ja) p. 247-258
2009

Quantification of gonadotropin subunits GP alpha, FSH beta, and LH beta mRNA expression from Atlantic cod (Gadus morhua) throughout a reproductive cycle

C Mittelholzer, Eva Andersson, Geir Lasse Taranger, Ørjan Karlsen, Birgitta Norberg
Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 153 p. 288-295
2009

Quality of wild-captured saithe (Pollachius virens L.) fed formulated diets for 8 months

Håkon Magne Otterå, Ørjan Karlsen, Erik Slinde, Rolf Erik Olsen
Aquaculture Research 40 p. 1310-1319
2009

Photoperiod-modulated testis maturation in Atlantic cod (Gadus morhua, L.)

Fernanda Ferreira Loureiro de Almeida, Geir Lasse Taranger, Birgitta Norberg, Ørjan Karlsen, Jan Bogerd, Rüdiger W. Schulz
Biology of Reproduction 80 (Ja) p. 631-640
2009

Sperm characteristics and competitive ability in farmed and wild cod

Jon E. Skjaeraasen, Jon Egil Skjæraasen, Ian Mayer, I Mayer, Justin J. Meager, Geir Rudolfsen, O Karlsen, Ørjan Karlsen, Thomas Haugland, Oddmund Kleven
Marine Ecology Progress Series 375 (Ja) p. 219-228
2009

Vertical dynamics and reproductive behaviour of farmed and wild Atlantic cod Gadus morhua

Justin James Meager, Jon Egil Skjæraasen, Anders Fernø, Ørjan Karlsen, Svein Løkkeborg, Kathrine Michalsen, Stig Ove Utskot
Marine Ecology Progress Series 389 p. 233-243
2008

The expression of secondary sexual characteristics in recruit- and repeat-spawning farmed and wild Atlantic cod (Gadus morhua)

Jon Egil Skjæraasen, Justin James Meager, Ørjan Karlsen
ICES Journal of Marine Science 65 (Ja) p. 1710-1716
2008

The acute stress response in fed and food deprived Atlantic cod, Gadus morhua L

Rolf erik Olsen, Kristina Sundell, Einar Ringø, Reidar Myklebust, Gro Ingun Hemre, Ørjan Karlsen, Tom Hansen, O Karlsen
Aquaculture 280 (Ja) p. 232-241
2007

Growth, feed conversion and chemical composition of Atlantic salmon (Salmo salar L.) and Atlantic halibut (Hippoglossus hippoglossus L.) fed diets supplemented with krill or amphipods

J. Suontama, Ørjan Karlsen, Mari Moren, Gro Ingunn Hemre, Webjørn Raunsgård Melle, Eyolf Langmyhr, Harald Mundheim, Einar Ringø, R.E. Olsen
Aquaculture Nutrition 13 (Ja) p. 241-255
2007

Dietary plant protein utilization in Atlantic cod, Gadus morhua L

Ann-Cecilie Hansen, Ørjan Karlsen, Grethe Rosenlund, M Rimbach, Gro Ingunn Hemre
Aquaculture Nutrition 13 (Ja) p. 200-215
2007

Total replacement of fish meal with plant proteins in diets for Atlantic cod (Gadus morhua L.) I - Effects on growth and protein retention

Ann-Cecilie Hansen, Grethe Rosenlund, Ørjan Karlsen, Wolfgang Koppe, Gro Ingunn Hemre
Aquaculture 272 p. 599-611
2007

Effect of diet and season on quality of farmed Atlantic cod (Gadus morhua L)

Håkon Magne Otterå, Mats Carlehög, Ørjan Karlsen, Leif Akse, Jørgen Borthen, Guro Eilertsen
Lebensmittel-Wissenschaft + Technologie 40 (Ja) p. 1623-1629
2007

Fluorine accumulation in Atlantic salmon (Salmo salar), Atlantic cod (Gadus morhua), rainbow trout (Onchorhyncus mykiss) and Atlantic Halibut (Hippoglossus hippoglossus) fed diets with krill or amphipod meals and fish meal based diets diets with sodium fluoride (NaF) inclusion

Mari Moren, Marian Kjellevold Malde, Rolf Erik Olsen, Gro Ingunn Hemre, Lisbeth Dahl, Ørjan Karlsen, Kåre Julshamn
Aquaculture 269 (Ja) p. 525-531
2007

Total replacement of fish meal with plant proteins in diets for Atlantic cod (Gadus morhua L.) II - Health aspects

Rolf Erik Olsen, Ann-Cecilie Hansen, Grethe Rosenlund, Gro Ingunn Hemre, Terry M. Mayhew, David L. Knudsen, Orhan Tufan Eroldoğan, Reidar Myklebust, Ørjan Karlsen
Aquaculture 272 (Ja) p. 612-624
2006

Element concentrations in meals from krill and amphipods, - Possible alternative protein sources in complete diets for farmed fish

Mari Moren, Jorma Suontama, Gro Ingunn Hemre, Ørjan Karlsen, Rolf Erik Olsen, Harald Mundheim, Kåre Julshamn
Aquaculture 261 (Ja) p. 174-181
2006

Effect of Antarctic krillmeal on quality of farmed Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Jorma Suontama, Rolf Erik Olsen
Aquaculture Research 37 (Ja) p. 1676-1684
2006

The inclusion of plant protein in cod diets, its effects on macronutrient digestibility, gut and liver histology and heat shock protein transcription

Ann-Cecilie Hansen, Grethe Rosenlund, Ørjan Karlsen, Pål Asgeir Olsvik, Gro Ingunn Hemre
Aquaculture Research 37 (Ja) p. 773-784
2006

Effect of varying levels of macro nutrients and continuous light on growth, energy deposits and maturation in farmed Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Gro Ingunn Hemre, Kristoffer Tveit, Grethe Rosenlund
Aquaculture 255 (Ja) p. 242-254
2006

Comparison of growth rate among different protein genotypes in Atlantic cod, Gadus morhua, under farmed conditions

Knut E. Jørstad, Ørjan Karlsen, Terje Svåsand, Håkon Magne Otterå
ICES Journal of Marine Science 63 (Ja) p. 235-245
2006

Effects of photoperiod and exercise on growth, liver size, and age at puberty in farmed Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Birgitta Norberg, Olav Sigurd Kjesbu, Geir Lasse Taranger
ICES Journal of Marine Science 63 (Ja) p. 355-364
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 (Ja) p. 1197-1206
2004

Effect of feed composition and feeding frequency on growth, feed utilisation and nutrient retention in juvenile cod, Gadus morhua

Grethe Rosenlund, Ørjan Karlsen, Kristoffer Tveit, Anders Mangor-Jensen, Gro Ingunn Hemre
Aquaculture Nutrition 10 (Ja) p. 371-378
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 (Ja) p. 205-209
2004

Effect of season, light regime and diet on muscle composition and selected quality parameters in farmed Atlantic cod, Gadus morhua L

Gro Ingunn Hemre, Ørjan Karlsen, Karen Eckhoff, Kristoffer Tveit, Anders Mangor-Jensen, Grethe Rosenlund
Aquaculture Research 35 (Ja) p. 683-697
2004

Precision and accuracy of stable isotope signals in otoliths of pen-reared cod (Gadus morhua) when sampled with a high-resolution micromill

Hans Høie, Carin Andersson, Arild Folkvord, Ørjan Karlsen
Marine Biology 144 (Ja) p. 1039-1049
2004

The effect of photoperiod on sexual maturation, appetite and growth in wild atlantic cod (Gadus morhua L)

Jon Egil Skjæraasen, Anne Gro Vea Salvanes, Ørjan Karlsen, Geir Dahle, Trygve Nilsen, Birgitta Norberg
Fish Physiology & Biochemistry 30 (Ja) p. 163-174
2003

Gonadal development and associated changes in relative liver size and sexual steroids during the reproductive cycle of captive male and female Atlantic cod (Gadus morhua L.)

Roy Dahle, Geir Lasse Taranger, Ørjan Karlsen, Olav Sigurd Kjesbu, Birgitta Norberg
Comparative Biochemistry and Physiology - Part A: Comparative Physiology 136 (Ja) p. 641-653
2003

Digestibility of dry matter, protein and lipid by cod, Gadus morhua, comparison of sampling methods

Gro Ingunn Hemre, Ørjan Karlsen, Anders Mangor-Jensen, Grethe Rosenlund
Aquaculture 225 (Ja) p. 225-232
2003

Effect of sustained exercise on white muscle structure and flesh quality in farmed cod (Gadus morhua L.)

Marit Bjørnevik, Ørjan Karlsen, Ian Johnston, Anders Kiessling
Aquaculture Research 34 (Ja) p. 55-64
2003

Growth patterns and plasma levels of testoterone, 11-ketotestosterone, and IGF-1 in male Atlantic halibut (Hippoglossus hippoglossus) from juvenile stages throughout sexual development

Finn-Arne Weltzien, Ørjan Karlsen, Birgitta Norberg
Fish Physiology & Biochemistry 28 (Ja) p. 227-228
2002

Spermatogenesis and related plasma androgen levels in Atlantic halibut (Hippoglossus hippoglossus L.)

Finn-Arne Weltzien, Geir Lasse Taranger, Ørjan Karlsen, Birgitta Norberg
Comparative Biochemistry and Physiology A 132 (Ja) p. 567-575
2001

Growth, gonadal development and spawning time of Atlantic cod (Gadus morhua) reared under different photoperiods

Tom Johnny Hansen, Ørjan Karlsen, Geir Lasse Taranger, Gro Ingunn Hemre, Jens Christian Holm, Olav Sigurd Kjesbu
Aquaculture 203 (Ja) p. 51-67
2001

A correlation between phototactic response and first-feeding of (Hippoglossus hippoglossus L.) larvae

Ørjan Karlsen, Anders Mangor-Jensen
Aquaculture Research 32 (Ja) p. 907-912
2001

Effects of photoperiod on sexual maturation and somatic growth in male Atlantic halibut (Hippoglossus hippoglossus L.)

Birgitta Norberg, Finn-Arne Weltzien, Ørjan Karlsen, Jens Christian Holm
Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 129 (Ja) p. 357-365
2000

Environmental influences on melatonin secretion in Atlantic cod (Gadus morhua L.) and their relevance to commercial culture

Mark Porter, Sigurd Olav Stefansson, Gunnar Nyhammer, Ørjan Karlsen, Birgitta Norberg, Nial Bromage
Fish Physiology & Biochemistry 23 (Ja) p. 191-200
1998

The effect of light on activity and growth of Atlantic halibut, Hippoglossus hippoglossus L., yolk-sac larvae

Ørjan Karlsen, Anne Berit Skiftesvik, Jon Vidar Helvik
Aquaculture Research 29 (Ja) p. 899-912
1996

The effect of light- and dark-rearing on the development of the eyes of Atlantic halibut (Hippoglossus hippoglossus) yolk sac larvae

Jon Vidar Helvik, Ørjan Karlsen
Marine and Freshwater Behaviour & Physiology 28 (Ja) p. 107-121
1995

Effects of periodic starvation on reproductive investment in first-time spawning Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Olav Sigurd Kjesbu, Jens Christian Holm
Aquaculture 3 (Ja) p. 159-170
1994

Ultrasonography, a non-invasive method for sex determination in cod (Gadus morhua L.)

Ørjan Karlsen, Jens Christian Holm
Journal of Fish Biology 44 (Ja) p. 965-971

Informasjonsmateriale

2015

Marine fiskelarver vokser raskere med hoppekreps som fôr

Terje van der Meeren, Ørjan Karlsen, Rolf Edvardsen
(Nei)

Poster

2017

The influence of salmon Salmo salar aquaculture on spawning ground use of Atlantic cod Gadus morhua.

Jon Egil Skjæraasen, Ørjan Karlsen, Esben Moland Olsen, Even Moland, Kristine Marit Schrøder Elvik, Terje van der Meeren, Raymond Bannister
2017

Anadromous whitefi sh (Coregonus lavaretus L.) as host for salmon lice(Lepeophtheirus salmonis Krøyer)

Rune Nilsen, Egil Karlsbakk, Sussie Dalvin, Rosa Maria Serra-Llinares, Kristine Marit Schrøder Elvik, Stig Mæhle, Ørjan Karlsen, Pål Arne Bjørn, Grethe Beate Thorsheim, Bjørn Olav Kvamme
2017

Survival and habitat use of sea trout post-smolts artificially infested with salmon lice: A pilot study

Rosa Maria Serra-Llinares, Carla Freitas, Rune Nilsen, Kristine Marit Schrøder Elvik, Jon Albretsen, Ørjan Karlsen, Pål Arne Bjørn, Bjørn Olav Kvamme
2016

Use of sentinel cages to monitor the effect of fallowing regimes on salmon lice infestations

Anne Dagrun Sandvik, Rune Nilsen, Rosa Maria Serra-Llinares, Pål Arne Bjørn, Bengt Finstad, Ørjan Karlsen
(Nei)
2016

Sampling methods for monitoring sea lice on wild sea trout

Kristine Marit Schrøder Elvik, Sussie Dalvin, Rune Nilsen, Rosa Maria Serra-Llinares, Elina Halttunen, Pål Arne Bjørn, Ørjan Karlsen, Bjørn Olav Kvamme
(Nei)
2016

Effects of salmon lice on the survival and growth of sea trout

Rosa Maria Serra-Llinares, Rune Nilsen, Kristine Marit Schrøder Elvik, Elina Halttunen, Bengt Finstad, Sofie Knutar, Ørjan Karlsen, Pål Arne Bjørn
(Nei)
2016

Strategy for an environmentally sustainable aquaculture industry

Anne Dagrun Sandvik, Rune Nilsen, Rosa Maria Serra-Llinares, Ingrid Askeland Johnsen, Lars Asplin, Ørjan Karlsen
(Nei)
2016

Can a qualitative use of a hydrodynamic dispersal model for sea lice predict areas with high and low infestation levels on wild sea trout?

Ørjan Karlsen, Lars Asplin, Pål Arne Bjørn, Rune Nilsen, Anne Dagrun Sandvik
(Nei)
2015

Diet affects the redox system in developing Atlantic cod (Gadus morhua) larvae

Kristin Hamre, Samuel Penglase, Rolf Edvardsen, Tomasz Furmanek, Ørjan Karlsen, Terje van der Meeren, Ivar Rønnestad
2014

Ontogeny of genetic networks underlying central appetite-controlling systems in the teleost Atlantic cod

Ivar Rønnestad, M.T.D Hoang Le, Lars O.E. Ebbesson, Ørjan Karlsen, Anna Rita Angotzi
(Nei)
2014

Key nutrients for the enhanced growth and development of Atlantic cod (Gadus morhua) larvae fed copepods, in comparison with rotifers

Kristin Hamre, Terje van der Meeren, Ørjan Karlsen, Anders Mangor-Jensen, Mari Moren, Ivar Rønnestad
(Nei)
2013

Copepods enhance growth and development in Atlantic cod (Gadus morhua L.) larvae

Terje van der Meeren, Ørjan Karlsen, Anders Mangor-Jensen, Ivar Rønnestad, Kristin Hamre
(Nei)
2013

Nutritional improvements using natural zooplankton in Atlantic cod hatcheries

Ørjan Karlsen, Kristin Hamre, Anders Mangor-Jensen, Ivar Rønnestad, Terje van der Meeren
(Nei)
2011

Effect of dietary lipid levels on sexual maturation and fecundity in female Atlantic cod (Gadus morhua L.)

André Sture Bogevik, Ørjan Karlsen, Eva Andersson, Anders Thorsen, Kristin Hamre, Grethe Rosenlund, Lena Birgitta Norberg
(Nei)
2011

The link between broodstock stress and offspring developmental potential in Atlantic cod Gadus morhua L

Lene Kleppe, Ørjan Karlsen, Rolf Edvardsen, Øyvind Drivenes, Birgitta Norberg, Geir Lasse Taranger, Anna Wargelius
(Nei)
2008

Sperm competition in farmed and wild cod

Jon Egil Skjæraasen, Ian Mayer, Justin James Meager, Geir Rudolfsen, Thomas Haugland, Ørjan Karlsen, Oddmund Kleven
(Nei)
2007

The cod mating system and the risk of genetic introgression from farmed escapees

Jon Egil Skjæraasen, Justin James Meager, Ørjan Karlsen, Svein Løkkeborg, Kathrine Michalsen, Ian Mayer, Jeffrey A. Hutchings, Anders Fernö
(Nei)

Mediebidrag

2016

Havforskingsinstituttet med nytt lakselus-kart

Karlsen, Ørjan
(Nei)

Kapitler og bøker

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
(Nei) p. 28-44
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
(Nei) p. 28-42

Populærvitenskapelige artikler

2016

Lakselus – en begrensning for oppdrettsnæringen

Ørjan Karlsen, Bjørn Olav Kvamme, Rune Nilsen
Fisken og Havet, Særnummer (Nei) p. 11-14
2015

Klebrig eggeskall gjør hyseegg svært sårbare for oljeforurensning

Sonnich Meier, Elin Sørhus, Ørjan Karlsen, Anders Thorsen, Rolf Edvardsen, Terje van der Meeren, Frode Bendiksen Vikebø
Fisken og Havet, Særnummer 1 (Nei) p. 64-66
2015

Langtidseffekter av ulike startfôr

Ørjan Karlsen, Kaja Helvik Skjærven, Jorge Fernandes, Terje van der Meeren, Ivar Rønnestad, Kristin Hamre
Norsk Fiskeoppdrett E1 (Nei) p. 42-43
2015

Hvordan kan appetitt og fôrinntak stimuleres hos torskelarver?

Ivar Rønnestad, Rolf Edvardsen, Augustine Arukwe, M.T.D Hoang Le, Anna Rita Angotzi, Lars O.E. Ebbesson, Kristin Hamre, Ørjan Karlsen, Terje van der Meeren, Ann-Elise Olderbakk Jordal
Norsk Fiskeoppdrett E1 (Nei) p. 28-30
2015

Oksidativt stress forårsaket av taurinmangel kan være en medvirkende årsak til redusert vekst hos torskelarver fôret med rotatorier

S Pengalese, Rolf Edvardsen, Tomazs Furmanek, Ivar Rønnestad, Ørjan Karlsen, Terje van der Meeren, Kristin Hamre
Norsk Fiskeoppdrett E1 (Nei) p. 25-27
2015

Kan vi forklare de underliggende faktorer som gir en rasktvoksende fiskelarve av god kvalitet

Ivar Rønnestad, Kristin Hamre, Furmanek Tomazs, Ørjan Karlsen, Terje van der Meeren, Øystein Sæle, Rolf Edvardsen
Norsk Fiskeoppdrett E1 (Nei) p. 22-24
2015

Næringsstoffer som begrenser vekst hos torskelarver fôret med hjuldyr

Kristin Hamre, Ørjan Karlsen, Terje van der Meeren, Ivar Rønnestad
Norsk Fiskeoppdrett E1 (Nei) p. 17-19
2015

Utviklingsstadier i torsk basert på beindannelse

Øystein Sæle, Trine Haugen, Ørjan Karlsen, Terje van der Meeren, Kristin Hamre, Ivar Rønnestad, Kai Kristoffer Lie
Norsk Fiskeoppdrett E1 (Nei) p. 14-16
2015

Effekter av byttedyrtype på vekst hos torskelarver: naturlig dyreplankton versus hjuldyr og saltkreps

Terje van der Meeren, Ørjan Karlsen, Anders Mangor-Jensen, Ivar Rønnestad, Kristin Hamre
Norsk Fiskeoppdrett E1 p. 10-13
2013

Naturlig dyreplankton best for torskelarver

Ørjan Karlsen, Terje van der Meeren, Rolf Edvardsen
Fisken og Havet, Særnummer 1 (Nei) p. 52-53
2008

Kvalitet på sei ved oppdrettsanlegg - ein eksperimentell studie

Håkon Otterå, Ørjan Karlsen, Erik Slinde, R.E. Olsen
Fisken og Havet 2 (Nei) p. 24 s.

Faglige foredrag

2018

Interactions of salmon farming on Atlantic cod spawning grounds.

Terje van der Meeren, Jon Egil Skjæraasen, Mari Skuggedal Myksvoll, Geir Dahle, Esben Moland Olsen, Ørjan Karlsen, Raymond Bannister
2017

Disentangling the role of sea lice on the marine survival of Atlantic salmon

Knut Wiik Vollset, Ian Dohoo, Ørjan Karlsen, Elina Halttunen, Bjørn Olav Kvamme, Bengt Finstad, Vidar Wennevik, Ola Håvard Diserud, Andrew Bateman, Kevin D Friedland, Shad Kenneth Mahlum, Christian Jørgensen, Lars Qviller, Martin Krkošek, Åse Åtland, Bjørn Torgeir Barlaup
2017

Farge og frekvens på trafikklysene

Karlsen, Ørjan
2017

Hvordan bestemmer lakselus veksten i oppdrettsnæringen?

Karlsen, Ørjan
2017

Lakselus på Nordmøre - Status i forhold til trafikklyssystemet

Karlsen, Ørjan
2017

How is the traffic light system evolving and being used?

Karlsen, Ørjan
2017

Trafikklyssystemet - og veien videre

Ørjan Karlsen, Lars Asplin, Ingrid Askeland Johnsen, Mari Skuggedal Myksvoll, Anne Dagrun Sandvik, Bjørn Ådlandsvik
2017

Application of gas chromatography/tandem mass spectrometry to determine a wide range of petrogenic polycyclic aromatic hydrocarbons in small samples of oil exposed fish egg

Lisbet Sørensen, Elin Sørhus, Trond Nordtug, John P. Incardona, Tiffany Linbo, Laura Giovanetti, Marta S. Silva, Svein Are Mjøs, Ørjan Karlsen, Sonnich Meier
2017

DNA damage in Atlantic haddock exposed to sediment or produced water associated PAHs

Sonnich Meier, Ørjan Karlsen, Jérémie Le Goff, Lisbet Sørensen, Elin Sørhus, Daniela Maria Pampanin, Marta Romano, Bjørn Einar Grøsvik
2017

Oil droplet fouling and differential PAH toxicokinetics in embryos of Atlantic haddock and cod.

Lisbet Sørensen, Elin Sørhus, Trond Nordtug, John P. Incardona, Tiffany Linbo, Laura Giovanetti, Ørjan Karlsen, Sonnich Meier
2016

Development of lice dispersal models and their utility in predicting impacts on wild Atlantic salmon

Ørjan Karlsen, Lars Asplin, Anne Dagrun Sandvik, Bjørn Ådlandsvik, Rune Nilsen
(Nei)
2016

Forskningsbaserte råd om lakselus

Ørjan Karlsen, Lars Asplin, Pål Arne Bjørn, Bjørn Olav Kvamme, Rune Nilsen, Anne Dagrun Sandvik, Rosa Maria Serra-Llinares, Ove Tommy Skilbrei
(Nei)
2016

Lusesituasjonen i Hardanger

Ørjan Karlsen, Lars Asplin, Pål Arne Bjørn, Rune Nilsen, Anne Dagrun Sandvik, Rosa Maria Serra-Llinares, Bjørn Ådlandsvik
(Nei)
2016

The effect of salmon lice infections on wild caught Atlantic salmon (Salmo salar) and sea trout (Salmo trutta) postsmolts – a laboratory study

Ørjan Karlsen, Marsela Alvanopoulou, Kristoffer Berglund Andreassen, Bengt Finstad, Rune Nilsen, Ole Fredrik Skulstad, Pål Arne Bjørn
(Nei)
2016

Presentasjon av årets overvåkningsprogram på lus og relatert forskning

Karlsen, Ørjan
(Nei)
2016

Sameksistens mellom fiskeri og havbruk

Bjørn-Steinar Sæther, Ingebrigt Uglem, Ørjan Karlsen, Pablo Sánchez-Jerez
(Nei)
2016

ProCoEx tiltak for positiv sameksistens

Bjørn-Steinar Sæther, Ingebrigt Uglem, Ørjan Karlsen, Pablo Sánchez-Jerez
(Nei)
2016

Presentasjon av Risikovurdering 2016

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

Bruk av smittekart for vurdering av status 2015-2016 for sjøørret/sjørøye innen produksjonsområdene.

Mari Skuggedal Myksvoll, Anne Dagrun Sandvik, Rune Nilsen, Ørjan Karlsen
(Nei)
2015

Linking mechanisms of PAH cardiotoxicity, morphogenetic defects and cardiac gene expression in atlantic haddock

Elin Sørhus, Rolf Edvardsen, Ørjan Karlsen, Lisbet Sørensen, Trond Nordtug, Terje van der Meeren, Anders Thorsen, Sissel Jentoft, John Incardona, Frode Bendiksen Vikebø, Maja Thorbjørnsen, Sonnich Meier
(Nei)
2015

Interaction with dispersed crude oil droplets drives severe toxicity and delayed mortality in Atlantic haddock embryos.

Sonnich Meier, Elin Sørhus, Lisbet Sørensen, Anders Thorsen, Trond Nordtug, John Incardona, Frode Bendiksen Vikebø, Terje van der Meeren, Maja Thorbjørnsen, Ørjan Karlsen
2015

Lakselusmodellen – en bred og detaljert gjennomgang

Karlsen, Ørjan
2015

Fôring med rotatorier/Artemia eller naturlig zooplankton påvirker vekst hos torskelarver

Terje van der Meeren, Ørjan Karlsen
2014

The Hjort Centre for Marine Ecosystem Dynamics, Comprehensive experimental possibilities

Terje van der Meeren, Ørjan Karlsen
(Nei)
2014

Interactions between pelagic fish embryos and dispersed oil droplets

Elin Sørhus, Sonnich Meier, Anders Thorsen, Rolf Edvardsen, Sissel Jentoft, Trond Nordtug, Domagoj Maksan, Maja Thorbjørnsen, Christopher Peter Harman, Terje van der Meeren, Ørjan Karlsen
2014

Sustainable coexistence between salmon culture and coastal fisheries

Bjørn-Steinar Sæther, Ingebrigt Uglem, Ørjan Karlsen, Sanchez-Jerez Pablo, Karl Øystein Gjelland, Arechalvala Lopez Pablo
(Nei)
2014

Study on appetite control system in Atlantic cod (Gadus morhua) larvae: Development and distribution of neuropeptide y (NPY) and cocaine- and amphetamine-regulated transcript (CART)

M.T.D Hoang Le, Anna Rita Angotzi, Lars O.E. Ebbesson, Ørjan Karlsen, Ivar Rønnestad
(Nei)
2014

Characterizing appetite controlling system in fast-growing Atlantic cod larvae

Ivar Rønnestad, Anna Rita Angotzi, M.T.D Hoang Le, Rolf Edvardsen, Lars O.E. Ebbesson, Augustine Arukwe, Ørjan Karlsen, Terje van der Meeren, Knut Helge Jensen, Ann-Elise Olderbakk Jordal
(Nei)
2014

Fôring med naturlig zooplankton øker vekst og utvikling hos torskelarver

Terje van der Meeren, Ørjan Karlsen, Kristin Hamre, Anders Mangor-Jensen, Ivar Rønnestad
(Nei)
2014

Hva karakteriserer fysiologiske systemer som kontrollerer apetitt og fordøyelse i rasktvoksende torskelarver

Ann-Elise Olderbakk Jordal, Rolf Edvardsen, Anna Rita Angotzi, M.T.D Hoang Le, Ørjan Karlsen, Terje van der Meeren, Ivar Rønnestad
(Nei)
2014

Interaction between pelagic fish embryos and dispersed oil droplets

Elin Sørhus, Rolf Edvardsen, Ørjan Karlsen, Trond Nordtug, Terje van der Meeren, Anders Thorsen, Domagoj Maksan, Maja Thorbjørnsen, Christopher Peter Harman, Sissel Jentoft, Sonnich Meier
2014

Interactions between pelagic fish embryos and dispersed oil droplets

Sørhus Elin, Rolf Edvardsen, Ørjan Karlsen, Trond Nordtug, Terje van der Meeren, Anders Thorsen, Domagoj Maksan, Maja Thorbjørnsen, Christopher Peter Harman, Sissel Jentoft, Sonnich Meier
2014

Transkriptomanalyse av atlantisk torsk - mekanismer for rask vekst

Rolf Edvardsen, Tomasz Furmanek, Teshome Bizauyehu, Igor Babiak, Matilde Skogen Chauton, Kai Kristoffer Lie, Ann-Elise Olderbakk Jordal, Elin Sørhus, Ørjan Karlsen, Terje van der Meeren, Anders Mangor-Jensen, Ivar Rønnestad
(Nei)
2013

Fôring med naturlig zooplankton øker vekst og utvikling hos torskelarver

Terje van der Meeren, Ørjan Karlsen, Kristin Hamre
(Nei)
2013

TRANSCRIPTOMIC ANALYSIS OF DEVELOPING ATLANTIC COD - UNDERSTANDING THE MECHANISMS UNDERLYING HIGH GROWTH

Rolf Edvardsen, Tomasz Furmanek, Kai Kristoffer Lie, Ann-Elise Olderbakk Jordal, Elin Sørhus, Ørjan Karlsen, Terje van der Meeren, Anders Mangor-Jensen, Ivar Rønnestad
(Nei)
2013

Kunnskapsgrunnlag for tiltak for positiv sameksistens mellom havbruk og fiskeri

Ingebrigt Uglem, Bjørn-Steinar Sæther, Ørjan Karlsen
(Nei)
2013

Is spawning success of Atlantic cod escapees influenced by differences in sperm competition?

Ian Mayer, Justin James Meager, Jon Egil Skjæraasen, Geir Rudolfsen, Ørjan Karlsen, Olav Moberg, Arved Staby, Oddmund Kleven, Anders Fernö
(Nei)
2013

Transcriptome analysis- monitoring dietary effects on appetite and digestion in Atlantic cod larvae during ontogeny

Ann-Elise Olderbakk Jordal, Rolf Edvardsen, Anna Rita Angotzi, M.T.D. Le, Ørjan Karlsen, Terje van der Meeren, Ivar Rønnestad
(Nei)
2012

Attempts to induce sterility in Atlantic salmon by morfolino and zink finger techniques

Anna Wargelius, Rolf Edvardsen, Trine Haugen, Ståle Ellingsen, Eva Andersson, Ketil Malde, Ørjan Karlsen, Per Gunnar Fjelldal, Geir Lasse Taranger, Øyvind Drivenes
(Nei)
2012

The use of indicators in assessing sustainability of feed ingredients

Ole Torrissen, Ørjan Karlsen
(Nei)
2011

Control of sexual maturity in cod farming – status and future solution

Ørjan Karlsen, Trine Haugen, Øyvind Johan Korsøen, Ingegjerd Opstad, Håkon Magne Otterå, Ole Fredrik Skulstad, Anders Thorsen, Anna Wargelius, Geir Lasse Taranger
(Nei)
2011

Sperm traits and reproductive roles in a marine broadcast spawner

Jon Egil Skjæraasen, Justin James Meager, Geir Rudolfsen, Ørjan Karlsen, Ian Mayer, Olav Moberg, Arved Staby, Geir Dahle, Anders Fernø
(Nei)
2009

Is sperm competition a major component of sexual selection in Atlantic cod?

Ian Mayer, Jon Egil Skjæraasen, Justin James Meager, Geir Rudolfsen, Ørjan Karlsen, Olav Moberg, Arved Staby, Oddmund Kleven
(Nei)
2008

Mating competition between farmed and wild cod

Jon Egil Skjæraasen, Justin James Meager, Ørjan Karlsen, Ian Mayer, Geir Rudolfsen, Geir Dahle, A. Fernö
(Nei)
2008

Movements and behaviour of escaped farmed cod (Gadus morhua) on a spawning ground

Justin James Meager, Jon Egil Skjæraasen, Anders Fernö, Ørjan Karlsen, Svein Løkkeborg
(Nei)
2008

Determinants of sperm competition and the role of cryptic female choice in the broadcast spawning Atlantic cod (Gadus morhua)

Ian Mayer, Jon Egil Skjæraasen, Justin James Meager, Geir Rudolfsen, Ørjan Karlsen, Olav Moberg, Arved Staby, Oddmund Kleven, Anders Fernö
(Nei)
2008

Movement and behaviour of escaped farmed cod (Gadus morhua L)

Justin James Meager, Jon Egil Skjæraasen, Anders Fernö, Svein Løkkeborg, Ørjan Karlsen, Kathrine Michalsen
(Nei)
2007

Movements and behaviour of escaped farmed cod on a spawning ground

Justin James Meager, Jon Egil Skjæraasen, Anders Fernö, Svein Løkkeborg, Ørjan Karlsen, Kathrine Michalsen
(Nei)

Annet tidsskriftbidrag

2014

Ontogeny of genetic networks underlying central appetite-controlling systems in the teleost Atlantic cod

Ivar Rønnestad, M.T.D Hoang Le, Lars O.E. Ebbesson, Ørjan Karlsen, Anna Rita Angotzi
The FASEB Journal 28 (Ja)

Rapporter og avhandlinger

2018

Lakselusinfestasjon på vill laksefisk langs norskekysten i 2017

Rune Nilsen, Kristine Marit Schrøder Elvik, Rosa Maria Serra-Llinares, Anne Dagrun Sandvik, Lars Asplin, Ingrid Askeland Johnsen, Pål Arne Bjørn, Ørjan Karlsen, Bengt Finstad, Marius Berg, Ingebrigt Uglem, Gunnar Bekke Lehmann, Knut Wiik Vollset
2017

Lakselusinfestasjon på vill - laksefisk i mai 2017: Framdriftsrapport til Mattilsynet

Rune Nilsen, Rosa Maria Serra-Llinares, Kristine Marit Schrøder Elvik, Bjørn Olav Kvamme, Ørjan Karlsen, Bengt Finstad, Gunnar Bekke Lehmann
2017

DNA damage and health effects in juvenile haddock exposed to sediment or produced water associated PAHs

Sonnich Meier, Ørjan Karlsen, Jérémie Le Goff, Lisbet Sørensen, Rolf Edvardsen, Sissel Jentoft, Karianne Skogland, Per Gunnar Fjelldal, Daniela Maria Pampanin, Evgenia Dunaevskaya, Marta Romano, Mark Myers, Bjørn Einar Grøsvik
2017

Risikorapport norsk fiskeoppdrett 2017

Terje Svåsand, Ellen Sofie Grefsrud, Ørjan Karlsen, Bjørn Olav Kvamme, Kevin Glover, Vivian Husa, Tore S Kristiansen
2017

Vurdering av lakselusindusert villfiskdødelighet per produksjonsområde i 2016 og 2017. Rapport fra ekspertgrupper for vurdering av lusepåvirkning

Frank Nilsen, Ingrid H. Ellingsen, Bengt Finstad, Peder A Jansen, Ørjan Karlsen, Anja Bråthen Kristoffersen, Anne Dagrun Sandvik, Harald Sægrov, Ola Ugedal, Knut Wiik Vollset
(Ja)
2017

Lakselusinfestasjon på vill laksefisk vår og sommer 2017 – Framdriftsrapport til Mattilsynet september 2017

Rune Nilsen, Rosa Maria Serra-Llinares, Kristine Marit Schrøder Elvik, Anne Dagrun Sandvik, Ingrid Askeland Johnsen, Bjørn Olav Kvamme, Ørjan Karlsen, Bengt Finstad, Gunnar Bekke Lehmann
(Nei)
2016

Evaluering av tiltak for å fremme bærekraftig sameksistens mellom fiskeri og havbruksnæring (ProCoEx)

Bjørn-Steinar Sæther, Ingebrigt Uglem, Ørjan Karlsen, Karl Øystein Gjelland, Sonnich Meier, Kjell Ø. Midling, Pablo Sanches-Jerez, Kilian Toledo-Guedes, Pablo Arechavala-Lopez, Frutos C. Marhuenda Egea
(Ja)
2016

Lakselusinfeksjonen på vill laksefisk langs norskekysten i 2015. En fullskala test av modellbasert varsling og tilstandsbekreftelse.

Rune Nilsen, Pål Arne Bjørn, Rosa Maria Serra-Llinares, Lars Asplin, Anne Dagrun Sandvik, Ingrid Askeland Johnsen, Ørjan Karlsen, Bengt Finstad, Marius Berg, Ingebrigt Uglem, Bjørn Torgeir Barlaup, Knut Wiik Vollset, Gunnar Bekke Lehmann
(Ja)
2016

Kunnskapsstatus som grunnlag for kapasitetsjustering innen produksjonsområder basert på lakselus som indikator

Ørjan Karlsen, Bengt Finstad, Ola Ugedal, Terje Svåsand
(Ja)
2016

Effekter av utslipp fra akvakultur på spesielle marine naturtyper, rødlista habitat og arter. Kunnskapsstatus

Vivian Husa, Tina Kutti, Ellen Sofie Grefsrud, Ann-Lisbeth Agnalt, Ørjan Karlsen, Raymond Bannister, Ole Bent Samuelsen, Bjørn Einar Grøsvik
(Ja)
2016

Fremdriftsrapport til Mattilsynet over lakselusinfestasjon på vill laksefisk langs norskekysten i mai og juni 2016

Rune Nilsen, Rosa Maria Serra-Llinares, Bjørn Olav Kvamme, Ørjan Karlsen, Bengt Finstad, Knut Wiik Vollset
(Nei)
2016

Fremdriftsrapport til Mattilsynet - Lakselusinfestasjon på vill laksefisk sommeren 2016

Rune Nilsen, Rosa Maria Serra-Llinares, Bjørn Olav Kvamme, Ørjan Karlsen, Bengt Finstad, Knut Wiik Vollset
(Nei)
2016

Interaksjon mellom fiskeoppdrett og fiskeressurser på kysten

Terje van der Meeren, Ørjan Karlsen, Håkon Magne Otterå, Bjørn-Steinar Sæther, Ingebrigt Uglem
(Nei)
2016

Risikovurdering av norsk fiskeoppdrett 2016

Terje Svåsand, Ørjan Karlsen, Lars Helge Stien, Geir Lasse Taranger, Karin Kroon Boxaspen
(Ja)
2014

Risikovurdering norsk fiskeoppdrett 2013

Geir Lasse Taranger, Terje Svåsand, Bjørn Olav Kvamme, Tore Kristiansen, Karin Kroon Boxaspen, Jon Albretsen, Lars Asplin, Jan Aure, Britt Bang-Jensen, Raymond Bannister, Pål Arne Bjørn, Geir Dahle, Arne S Ervik, Per-Gunnar* Fjelldal, Bengt Finstad, Kevin Glover, Bjørn Einar Grøsvik, Pia Kupka Hansen, Tom Hansen, Mikko Heino, Vivian Husa, Peder Andreas Jansen, Daniel Jimenez, Ingrid Askeland Johnsen, Knut Jørstad, Egil Karlsbakk, Ørjan Karlsen, Anja Kristoffersen, Rosa Maria Serra Llinnares, Abdullah Madhun, Stein Mortensen, Morton Craig, Rune Nilsen, Håkon Otterå, Sonal Patel, Bjørn-Steinar Sæther, Ole B. Samuelsen, Anne Sandvik, Jofrid Skardhamar, Anne Berit Skiftesvik, Ove Skilbrei, Øystein Skaala, Cecilie Skår, Lars H. Stien, Ingebrigt Uglem, Terje van der Meeren, Vidar Wennevik
(Nei)
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
(Nei)
2013

Lakselusinfeksjonen på vill laksefisk langs Norskekysten i 2013. Sluttrapport til Mattilsynet

Pål Arne Bjørn, Rune Nilsen, Rosa Maria Serra Llinares, Lars Asplin, Ingrid Askeland Johnsen, Ørjan Karlsen, Bengt Finstad, Marius Berg, Ingebrigt Uglem, Bjørn Torgeir Barlaup, Knut Wiik Vollset
(Nei)
2013

Kunnskapsstatus - plassering av oppdrettsanlegg og mulige interaksjoner med gytefelt og oppvekstområder for marin fisk og vandringsruter for laks

Ørjan Karlsen, Terje van der Meeren
(Ja)
2013

Vedlegg til rapport: Interaksjoner mellom havbruk og ville marine organismer - En kunnskapsoppsummering

Bjørn-Steinar Sæther, Ingebrigt Uglem, Ørjan Karlsen
2007

Sædkvalitet hos steinbit

marianne Frantzen, Einar Dahl, Pia K. Hansen, Tore Haug, Ørjan Karlsen, Helge Tveiten
(Nei)
1999

Hatching and octogeny in marine fishes : consequences for variability and viability at first feeding

Karlsen, Ørjan
(Ja)
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