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Håkon Otterå

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Researcher
Telephone: 95065762
Department: Fiskeridynamikk
Publications

Publications

Academic articles

2022

Natural and anthropogenic drivers of escaped farmed salmon occurrence and introgression into wild Norwegian Atlantic salmon populations

Ola Håvard Diserud, Peder Fiske, Sten Karlsson, Kevin Alan Glover, Tor Næsje, Tonje Aronsen, Gunnar O Bakke, Bjørn Torgeir Barlaup, J. Erkinaro, Bjørn Florø-Larsen, Anders Foldvik, Mikko Petteri Heino, Øyvind Kanstad-Hanssen, Håvard Lo, Roar Asbjørn Lund, R. Muladal, E. Niemela, Finn Økland, Gunnel Marie Østborg, Håkon Magne Otterå, Øystein Skaala, Helge Skoglund, Ingrid Solberg, Monica Favnebøe Solberg, Vegard Pedersen Sollien, Harald Sægrov, Kurt Urdal, Vidar Wennevik, Kjetil Hindar
ICES Journal of Marine Science 79 p. 1363-1379
2022

A novel probabilistic survey method for at sea sampling in pelagic fisheries – the Norwegian catch sampling lottery

Håkon Magne Otterå, Jens A. Wathne, Edvin Fuglebakk, Aril Slotte, Bjørn Vidar Svendsen, Jon Helge Vølstad
Fisheries Research 260
2022

Integrating complementary survey methods to estimate catches in Norway’s complex marine recreational hook-and-line fishery

Keno Ferter, Håkon Magne Otterå, Mary C. Christman, Alf Ring Kleiven, Marc Simon Weltersbach, Sofie Gundersen, Christine Djønne, Otte Bjelland, Bruce Hartill, Jeremy Lyle, Kieran Hyder, Trude Kristin Borch, Jon Helge Vølstad
ICES Journal of Marine Science
2020

The pantophysin gene and its relationship with survival in early life stages of Atlantic cod: Pantophysin in Atlantic cod

Håkon Magne Otterå, Torild Johansen, Arild Folkvord, Geir Dahle, Marte Kristine Solvang Bingh, Jon-Ivar Westgaard, Kevin Glover
Royal Society Open Science 7 p. 1-13
2019

Domesticated escapees on the run: The second-generation monitoring programme reports the numbers and proportions of farmed Atlantic salmon in >200 Norwegian rivers annually

Kevin Glover, Kurt Urdal, Tor Næsje, Helge Skoglund, Bjørn Florø-Larsen, Håkon Magne Otterå, Peder Fiske, Mikko Petteri Heino, Tonje Aronsen, Harald Sægrov, Ola Håvard Diserud, Bjørn Torgeir Barlaup, Kjetil Hindar, Gunnar O Bakke, Ingrid Solberg, Håvard Lo, Monica Favnebøe Solberg, Sten Karlsson, Øystein Skaala, Anders Lamberg, Øyvind Kanstad-Hanssen, Rune Muladal, Ove Tommy Skilbrei, Vidar Wennevik
ICES Journal of Marine Science 76 p. 1151-1161
2019

Field surveying of marine recreational fisheries in Norway using a novel spatial sampling frame reveals striking under-coverage of alternative sampling frames

Jon Helge Vølstad, Mary C. Christman, Keno Ferter, Alf Ring Kleiven, Håkon Magne Otterå, Øystein Aas, Robert Arlinghaus, Trude Borch, Jonathan Edward Colman, Bruce Hartill, Thrond Oddvar Haugen, Kieran Hyder, Jeremy Lyle, Martin Junker Ohldieck, Christian Skov, Harry Vincent Strehlow, Dave van Voorhees, Marc Simon Weltersbach, Edward D. Weber
ICES Journal of Marine Science 77 p. 2192-2205
2019

Otolith growth and zone formation during first maturity and spawning of Atlantic cod (Gadus morhua)

Christian Irgens, Arild Folkvord, Håkon Magne Otterå, Olav Sigurd Kjesbu
Canadian Journal of Fisheries and Aquatic Sciences 77 p. 113-123
2018

Growth of wild and domesticated Atlantic cod Gadus morhua reared under semi-commercial conditions

Håkon Magne Otterå, Mikko Petteri Heino, Anne Grete Eide Sørvik, Terje Svåsand, Ørjan Karlsen, Anders Thorsen, Kevin Glover
Aquaculture Environment Interactions 10 p. 187-200
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 p. 109-128
2016

Two adjacent inversions maintain genomic differentiation between migratory and stationary ecotypes of Atlantic cod

Tina Graceline Kirubakaran, Harald Grove, Matthew Peter Kent, Simen Rød Sandve, Matthew Baranski, Torfinn Nome, Maria Cristina De Rosa, Benedetta Righino, Torild Johansen, Håkon Magne Otterå, Anna Kristina Sonesson, Sigbjørn Lien, Øivind Andersen
Molecular Ecology 25 p. 2130-2143
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 p. 699-709
2016

Influence of depth, time and human activity on detection rate of acoustic tags: a case study on two fish farms

Håkon Magne Otterå, Ove Tommy Skilbrei
Journal of Fish Biology 88 p. 1229-1235
2016

Vertical distribution of saithe (Pollachius virens) aggregating around fish farms

Ove Tommy Skilbrei, Håkon Magne Otterå
ICES Journal of Marine Science 73 p. 1186-1195
2015

Pug-headedness in the farmed triploid Atlantic cod, Gadus morhua Linnaeus, 1758 (Actinopterygii: Gadiformes: Gadidae) in Norway

Laith A. Jawad, Anders Thorsen, Håkon Magne Otterå, Per Gunnar Fjelldal
Acta Adriatica 56 p. 291-296
2014

Possible influence of salmon farming on long-term resident behaviour of wild saithe (Pollachius virens L.)

Håkon Magne Otterå, Ove Tommy Skilbrei
ICES Journal of Marine Science 71 p. 2484-2493
2014

Genetic marking of farmed Atlantic cod (Gadus morhua l.) and detection of escapes from a commercial cod farm

Knut Eirik Jørstad, Håkon Magne Otterå, Terje van der Meeren, Geir Dahle, Ole Ingar Paulsen, Gunnar O Bakke, Terje Svåsand
ICES Journal of Marine Science 71 p. 574-584
2013

Fertility of gynogenetic Atlantic cod (Gadus morhua L.)

Ørjan Karlsen, Håkon Magne Otterå, Anders Thorsen
Journal of Applied Ichthyology 29 p. 1292-1296
2012

Seasonal dynamics of growth and mortality suggest contrasting population structure and ecology for cod, pollack and saithe in a Norwegian fjord

Mikko Petteri Heino, Terje Svåsand, Jarle Tryti Nordeide, Håkon Magne Otterå
ICES Journal of Marine Science 69 p. 537-546
2012

Is spawning time of marine fish imprinted in the genes? A two-generation experiment on local Atlantic cod (Gadus morhua L.) populations from different geographical regions

Håkon Magne Otterå, Ann-Lisbeth Agnalt, Anders Thorsen, Olav Sigurd Kjesbu, Geir Dahle, Knut Eirik Jørstad
ICES Journal of Marine Science 69 p. 1722-1728
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 p. 1298-1302
2009

A comparison of farmed, wild and hybrid Atlantic salmon (Salmo salar L.) reared under farming conditions

Kevin Glover, Håkon Magne Otterå, Rolf Erik Olsen, Erik Slinde, Geir Lasse Taranger, Øystein Skaala
Aquaculture 286 p. 203-210
2009

Effects of egg size, parental origin and feeding conditions on growth of larval and juvenile cod Gadus morhua

H. Paulsen, Olav Sigurd Kjesbu, V. Buehler, R.A.J. Case, C. Clemmesen, G. Carvalho, L. Hauser, William F. Hutchinson, Erlend Moksness, Håkon Magne Otterå, Anders Thorsen, Terje Svåsand
Journal of Fish Biology 75 p. 516-537
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

Effects of female spawning experience and larval size on feeding and growth of cod larvae Gadus morhua L. reared in mesocosms

Kjersti Eline Tønnessen Busch, Arild Folkvord, Håkon Otterå, William F. Hutchinson, Terje Svåsand
Marine Biology Research 5 p. 286-296
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 p. 1623-1629
2006

Differences in spawning time of captive Atlantic cod from four regions of Norway, kept under identical conditions

Otterå, H., Agnalt, A. and Jørstad, K.
ICES Journal of Marine Sciences 63 p. 216-223
2006

Association between growth and Pan I* genotype within Atlantic cod full-sibling families

Richard A.J. Case, William F. Hutchinson, Lorenz Hauser, Vivian Buehler, Catriona Clemmesen, Geir Dahle, Olav Sigurd Kjesbu, Erlend Moksness, Håkon Magne Otterå, Helge Paulsen, Terje Svåsand, Anders Thorsen, Gary R. Carvalho
Transactions of the American Fisheries Society 135 p. 241-250
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 p. 235-245
2006

Food ingestion in juvenile cod estimated by inert lanthanide markers - effects of food particle size

Oddvard Garatun-Tjeldstø, Håkon Otterå, Kåre Julshamn, Erland Austreng
ICES Journal of Marine Science 63 p. 311-319
2003

Variability in condition and growth of Atlantic cod larvae and juveniles reared in mesocosms: environmental and maternal effects.

Catriona Clemmesen, Vivian Buehler, Gary Carvalho, R.A.J. Case, G Evans, Lorenz Hauser, William F. Hutchinson, Olav Sigurd Kjesbu, H. Mempel, Erlend Moksness, Håkon Magne Otterå, H. Paulsen, Anders Thorsen, Terje Svåsand
Journal of Fish Biology 62 p. 706-723
2003

Feed preferences in juvenile cod estimated by inert lanthanid markers - effects of moisture content in the feed

Håkon Magne Otterå, Oddvard Garatun-Tjeldstø, Kåre Julshamn, Erland Austreng
Aquaculture International 11 p. 217-224
2003

Feed preferences in juvenile cod estimated by lanthanid markers - effects of moisture content in the feed

Håkon Otterå, Oddvard Garatun-Tjeldstø
Aquaculture International 11 p. 217-224
2003

Is humane slaughter of fish possible for industry?

Hans van de Vis, Steve Kestin, David Robb, Jörg Oehlenschläger, Bert Lambooij, Werner Münkner, Holmer Kuhlmann, Karin Kloosterboer, Margarita Tejada, Almudena Huidobro, Håkon Otterå, Bjørn Roth, Nils Kristian Sørensen, Leif Akse, Hazel Byrne, Paul Nesvadba
Aquaculture Research 34 p. 211-220
1996

Differences in growth performance between Arcto-Norwegian and Norwegian coastal cod reared under identical conditions

Terje Svåsand, Knut Eirik Jørstad, Håkon Magne Otterå, Olav Sigurd Kjesbu
Journal of Fish Biology 49 p. 108-119
1994

comparative survival and growth of two strains of Atlantic cod (Gadus morhua) through the early life stages in a marine pond

Blom, G., Svåsand, T., Jørstad, K.E., Otterå, H., Paulsen, O.I. and Holm, J.C.
Canadian Journal of Fisheries and Aquatic Sciences 51 p. 1012-1023
1993

Allometric growth in juvenile cod (Gadus morhua) and possible effects on cannibalism

Håkon Otterå, Arild Folkvord
Journal of Fish Biology 43 p. 643-645
1993

Effects of initial size distribution, day length, and feeding frequency on growth, survival, and cannibalism in juvenile Atlantic cod (Gadus morhua L.)

Arild Folkvord, Håkon Otterå
Aquaculture 114 p. 243-260
1988

The toxicity and excretion of rotenone in oysters (Ostrea edulis) and its degradation in seawater at temperatures near 0˙C

Ole Bent Samuelsen, Einar Solheim, Håkon Magne Otterå, Jan Per Pedersen
Aquaculture 70 p. 355-363

Other journal contributions

2007

Offspring performance of three different cod populations, measured under identical environmental conditions

Knut E. Jørstad, Terje van der Meeren, Geir Dahle, Ann-Lisbeth Agnalt, JB Taggart, Kevin Glover, Håkon Magne Otterå
Aquaculture 272 p. S273-S273
2007

Establishment of a biobank on Atlantic cod (Gadus morhua) in the Northeast Atlantic

Knut E. Jørstad, Geir Dahle, Ann-Lisbeth Agnalt, Håkon Magne Otterå, Terje van der Meeren, Svein-Erik Fevolden, KT Fjalestad, H Knutsen, Terje Svåsand
Aquaculture 272 p. S272-S273

Scientific lectures

2018

Assessing representativeness and bias in Norwegian commercial catch sampling programs conducted in collaboration with the industry.

Edvin Fuglebakk, Håkon Magne Otterå, Thomas L Clegg, Gjert E. Dingsør, Jon Helge Vølstad
2017

Environmental contaminants in wild fish from the North East Atlantic

Amund Måge, Bente Merete Nilsen, Tanja Kögel, Arne Duinker, Stig Valdersnes, Martin Wiech, Atabak Mahjour Azad, Håkon Magne Otterå, Sylvia Frantzen
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

Poster

2014

Experimental study of post-ovulatory follicles in saithe (Pollachius virens) for validation of otolith spawning zones

Jane Amtoft Godiksen, Håkon Magne Otterå, Olav Sigurd Kjesbu

Reports and dissertations

2024

Oversikt over fiskeri- og prøvetaking i botnfisksektoren i 2023 — torsk, hyse (NØA), sei, blåkveite, pigghå og reker (Norskerenna og Skagerrak)

Håkon Magne Otterå, Ole Thomas Albert, Bjarte Bogstad, Côme Denechaud, Elise Eidset, Johanna Jennifer Elisabeth Fall, Edvin Fuglebakk, Sofie Gundersen, Edda Johannesen, Claudia Junge, Yves Reecht, Silje Elisabeth Seim, Arved Staby, Brian Stock, Guldborg Søvik, Caroline Aas Tranang, Tone Vollen, Kristin Windsland
Rapport fra havforskningen
2024

Fangstprøvelotteriet 2023 - erfaringer og resultat

Håkon Magne Otterå, Lise Heggebakken, Åge Sigurd Høines, Espen Johnsen, Cecilie Kvamme, Leif Nøttestad, Georg Skaret, Erling Kåre Stenevik, Bjørn Vidar Svendsen
Rapport fra havforskningen
2024

Kartlegging av menneskelig aktivitet på utvalgte gytefelt for kysttorsk nord for 62°N

Johanna Jennifer Elisabeth Fall, Kjell Harald Nedreaas, Kotaro Ono, Håkon Magne Otterå, Sofie Gundersen
Rapport fra havforskningen
2024

Prøvefiske med trollgarn og åleruser på grunt vatn om hausten - Strekninga Florø Ryfylke i perioden 2015-2023

Håkon Magne Otterå, Otte Bjelland, Jan Hinriksson, Harald Næss, Kjell Harald Nedreaas
Toktrapport
2023

Fangstprøvelotteriet 2022 - erfaringer og resultat

Georg Skaret, Justine Emmanuelle Diaz, Lise Heggebakken, Lea Marie Hellenbrecht, Åge Sigurd Høines, Espen Johnsen, Cecilie Kvamme, Leif Nøttestad, Are Salthaug, Erling Kåre Stenevik, Bjørn Vidar Svendsen, Susanne Tonheim, Håkon Magne Otterå
Rapport fra havforskningen
2023

Fangstprøvelotteriet 2021 - erfaringer og resultat

Åge Sigurd Høines, Justine Emmanuelle Diaz, Lise Heggebakken, Lea Marie Hellenbrecht, Espen Johnsen, Cecilie Kvamme, Leif Nøttestad, Are Salthaug, Georg Skaret, Erling Kåre Stenevik, Bjørn Vidar Svendsen, Susanne Tonheim, Håkon Magne Otterå
2022

Fangstprøvelotteriet 2020 – erfaringer og resultat

Åge Sigurd Høines, Espen Johnsen, Cecilie Kvamme, Leif Nøttestad, Håkon Magne Otterå, Are Salthaug, Erling Kåre Stenevik, Bjørn Vidar Svendsen
2021

Kunnskapsstøtte og råd for regulering av fisket etter leppefisk i 2022

Kim Aleksander Tallaksen Halvorsen, Anne Berit Skiftesvik, Torkel Larsen, Håkon Magne Otterå, Albert Fernández-Chacón
2021

Final report for the REDUS project - Reduced Uncertainty in Stock Assessment

Erik Joel Steinar Olsen, Sondre Aanes, Magne Tommy Aldrin, Olav Nikolai Breivik, Edvin Fuglebakk, Daisuke Goto, Nils Olav Handegard, Cecilie Hansen, Arne Johannes Holmin, Daniel Howell, Espen Johnsen, Natoya Jourdain, Knut Korsbrekke, Kotaro Ono, Håkon Magne Otterå, Holly Ann Perryman, Samuel Subbey, Guldborg Søvik, Ibrahim Umar, Sindre Vatnehol, Jon Helge Vølstad
2020

Fangstprøvelotteriet 2019: Erfaringer og foreløpige resultat

Erling Kåre Stenevik, Åge Sigurd Høines, Cecilie Kvamme, Håkon Magne Otterå, Are Salthaug, Bjørn Vidar Svendsen
2018

Kvikksølvinnhold i fisk og annen sjømat ved vraket av U-864 vest av Fedje

Sylvia Frantzen, Håkon Magne Otterå, Hilde Elise Heldal, Amund Måge
2016

Interaksjon mellom fiskeoppdrett og fiskeressurser på kysten

Terje van der Meeren, Ørjan Karlsen, Håkon Magne Otterå, Bjørn-Steinar Sæther, Ingebrigt Uglem
2004

Hardangerfjorden – produksjon av laksefisk og effekter på de ville bestandene av laksefisk

Håkon Otterå, Ove Skilbrei, Øystein Skaala, Karin Boxaspen, Jan Aure, Geir Lasse Taranger, Arne S Ervik, Reidar Borgstrøm
1997

Havbeite med torsk i Hordaland - sluttrapport

Håkon Otterå, Tore S. Kristiansen, Terje Svåsand, Asbjørn Borge, Arne Storaker, Jan Per Pedersen, Ole Ingar Paulsen, Gunnar Nævdal, Solveig Thorkildsen
1995

Rearing of juvenile Atlantic cod (Gadus morhua L.), with particular reference to the transition from live to formulated feeds

Håkon Otterå, Arne Johannessen
Net reports
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