2024
Scrutinizing the current management units of the greater argentine in the light of genetic structure
Maria Quintela, Gaute Wilhelmsen Seljestad, Geir Dahle, Elvar Halldor Hallfredsson, Katja Susanna Enberg, Tom Langbehn, Eeva Jansson, Kevin Alan Glover, Jon-Ivar Westgaard
ICES Journal of Marine Science
2024
Towards eDNA informed biodiversity studies – Comparing water derived molecular taxa with traditional survey methods
Jon-Ivar Westgaard, Kim Præbel, Per Arneberg, Brian P. Ulaski, Randi Brunvær Ingvaldsen, Owen S. Wangensteen, Torild Johansen
Progress in Oceanography
222
2023
Genetic population structure in Norway lobster (Nephrops norvegicus): management regime under panmixia
Jon-Ivar Westgaard, Torild Johansen, Guldborg Søvik
ICES Journal of Marine Science
80
p. 766-774
2023
Contaminants reach everywhere: Fish dietary samples should be surface decontaminated prior to molecular diet analysis
Dilli Prasad Rijal, Tanja Lexau Hanebrekke, Per Arneberg, Torild Johansen, Daniela Sint, Michael Traugott, Mette Skern-Mauritzen, Jon-Ivar Westgaard
Ecology and Evolution
13
2023
Maximizing sampling efficiency to detect differences in fish community composition using environmental DNA metabarcoding in subarctic fjords
Gledis Guri, Jon-Ivar Westgaard, Nigel Yoccoz, Owen S. Wangensteen, Kim Præbel, Jessica Louise Ray, Ryan P. Kelly, Andrew Olaf Shelton, Tanja Lexau Hanebrekke, Torild Johansen
Environmental DNA
2022
Geographic variation in gene flow from a genetically distinct migratory ecotype drives population genetic structure of coastal Atlantic cod (Gadus morhua L.)
Bjørghild Breistein Seliussen, Geir Dahle, Torild Johansen, Francois Besnier, Maria Quintela, Per Erik Jorde, Halvor Knutsen, Jon-Ivar Westgaard, Kjell Harald Nedreaas, Eva Farestveit, Kevin Alan Glover
Evolutionary Applications
15
p. 1162-1176
2022
Benthic invertebrates in Svalbard fjords—when metabarcoding does not outperform traditional biodiversity assessment
Endre Willassen, Jon-Ivar Westgaard, Jon Anders Kongsrud, Tanja Lexau Hanebrekke, Pål Buhl-Mortensen, Børge Holte
PeerJ
10
2021
Taxonomic and genetic confirmed findings of snow crab (Chionoecetes opilio) larvae in the Barents Sea
Ann Merete Hjelset, Hanna Ellerine Helle Danielsen, Jon-Ivar Westgaard, Ann-Lisbeth Agnalt
Polar Biology
44
p. 2107-2115
2021
Genetic differentiation between inshore and offshore populations of northern shrimp (Pandalus borealis)
Agneta Hansen, Jon-Ivar Westgaard, Guldborg Søvik, Tanja Lexau Hanebrekke, Einar Magnus Nilssen, Per Erik Jorde, Jon Albretsen, Torild Johansen
ICES Journal of Marine Science
78
p. 3135-3146
2021
Hierarchical genetic structure in an evolving species complex: Insights from genome wide ddRAD data in Sebastes mentella
Atal Saha, Matthew Peter Kent, Lorenz Hauser, Daniel P. Drinan, Einar E. Nielsen, Jon-Ivar Westgaard, Sigbjørn Lien, Torild Johansen
PLOS ONE
16
2021
Genetic structuring in Atlantic haddock contrasts with current management regimes
Paul R. Berg, Per E. Jorde, Kevin A. Glover, Geir Dahle, John B. Taggart, Knut Korsbrekke, Gjert E. Dingsør, Jon E. Skjæraasen, Peter J. Wright, Steven X. Cadrin, Halvor Knutsen, Jon-Ivar Westgaard
ICES Journal of Marine Science
78
p. 1-13
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
2020
Genomic analysis reveals neutral and adaptive patterns that challenge the current management regime for East Atlantic cod Gadus morhua L
Torild Johansen, Francois Besnier, Maria Quintela Sanchez, Per Erik Jorde, Kevin Glover, Jon-Ivar Westgaard, Geir Dahle, Sigbjørn Lien, Matthew Peter Kent
Evolutionary Applications
p. 1-16
2019
Diet and prey consumption of grey seals (Halichoerus grypus) in Norway
Kjell Tormod Nilssen, Ulf Lindstrøm, Jon-Ivar Westgaard, Monika Charlotta Lindblom, Taija-Riitta Blencke, Tore Haug
Marine Biology Research
15
p. 137-149
2019
Boreal marine fauna from the Barents sea disperse to Arctic Northeast Greenland
Adam Andrews, Jørgen Schou Christiansen, Shripathi Bhat, Arve Lynghammar, Jon-Ivar Westgaard, Christophe Pampoulie, Kim Præbel
Scientific Reports
9
p. 1-8
2018
Analysis of coastal cod (Gadus morhua L.) sampled on spawning sites reveals a genetic gradient throughout Norway's coastline
Geir Dahle, Maria Quintela Sanchez, Torild Johansen, Jon-Ivar Westgaard, Francois Besnier, Asgeir Aglen, Knut Eirik Jørstad, Kevin Glover
BMC Genetics
19
2018
Genetic management of mixed-stock fisheries "real-time": The case of the largest remaining cod fishery operating in the Atlantic in 2007-2017
Geir Dahle, Torild Johansen, Jon-Ivar Westgaard, Asgeir Aglen, Kevin Glover
Fisheries Research
205
p. 77-85
2017
“Real-time” genetic monitoring of a commercial fishery on the doorstep of an MPA reveals unique insights into the interaction between coastal and migratory forms of the Atlantic cod
Torild Johansen, Jon-Ivar Westgaard, Bjørghild Breistein Seliussen, Kjell Harald Nedreaas, Geir Dahle, Kevin Glover, Roger Kvalsund, Asgeir Aglen
ICES Journal of Marine Science
75
p. 1093-1104
2017
Large and fine scale population structure in European hake (Merluccius merluccius) in the Northeast Atlantic
Jon-Ivar Westgaard, Arved Staby, Jane Aanestad Godiksen, Audrey J. Geffen, Anders Svensson, Gregory Charrier, Henrik Svedäng, Carl André
ICES Journal of Marine Science
74
p. 1300-1310
2017
Geographic extent of introgression in Sebastes mentella and its effect on genetic population structure
Atal Saha, Torild Johansen, Rasmus Hedeholm, Einar Eg Nielsen, Jon-Ivar Westgaard, Lorenz Hauser, Benjamin Planque, Steven X. Cadrin, Jesper Boje
Evolutionary Applications
10
p. 77-90
2017
Large and fine scale population structure in European hake (Merluccius merluccius) in the Northeast Atlantic
Jon-Ivar Westgaard, Arved Staby, Jane Aanestad Godiksen, Audrey J Geffen, Anders Svensson, Gregory Charrier, Henrik Svedäng, Carl André
ICES Journal of Marine Science
2017
Geographic extent of introgression in Sebastes mentella and its effect on genetic population structure
Atal Saha,T Johansen, Rasmus Hedeholm, Einar Eg Nielsen, Jon-Ivar Westgaard, Lorenz Hauser, Benjamin Planque, Steven X Cadrin, Jesper Boje
Evolutionary Applications
10
p. 77-90
2017
Genetic population structure in Greenland halibut (Reinhardtius hippoglossoides) and its relevance to fishery management
Jon-Ivar Westgaard, Atal Saha, Matthew Peter Kent, Hanne Hellerud Hansen, Halvor Knutsen, Lorenz Hauser, Steven X. Cadrin, Ole Thomas Albert, Torild Johansen
Canadian Journal of Fisheries and Aquatic Sciences
74
p. 475-485
2015
Farmed cod escapees and net-pen spawning left no clear genetic footprint in the local wild cod population.
Rebekka Varne, Kristina Lore Kunz, Torild Johansen, Jon-Ivar Westgaard, Ingebrigt Uglem, Jarle Mork
Aquaculture Environment Interactions
7
p. 253-266
2015
Extreme male-skewed sex ratios on spaning grounds for Atlantic cod Gadus morhua with typical coastal cod signatures of the Pan I (pantophysin) locus
Svein-Erik Fevolden, Jon-Ivar Westgaard, Torstein Pedersen
Sexuality and Early Development in Aquatic Organisms
p. 133-142
2015
Genetically distinct populations of northern shrimp, Pandalus borealis, in the North Atlantic: adaptation to different temperatures as an isolation factor
Per Erik Jorde, Guldborg Søvik, Jon-Ivar Westgaard, Jon Albretsen, Carl André, Carsten Hvingel, Torild Johansen, Anne Dagrun Sandvik, Michael Charles Kingsley, Knut Eirik Jørstad
Molecular Ecology
24
p. 1742-1757
2013
A diagnostic tool for efficient analysis of the population structure, hybridization and conservation status of European whitefish (Coregonus lavaretus (L.)) and vendace (C-albula (L.))
Kim Præbel, Jon-Ivar Westgaard, Per-Arne Amundsen, Anna Siwertsson, Rune Knudsen, Kimmo K. Kahilainen, Svein-Erik Fevolden
Advances in Limnology
64
p. 247-255
2012
Characterization of polymorphic microsattelite markers for the bearded goby Sufflogobius bibarbatus
Kristogu Baduge Suneetha Gunawickrama, Jon-Ivar Westgaard, Anne Gro Vea Salvanes, Torild Johansen
Conservation Genetics Resources
4
p. 187-189
2012
Isolation and characterization of nuclear microsatellite loci in the northern shrimp, Pandalus borealis
Ricardo T. Pereyra, Jon-Ivar Westgaard, Mikael Dahl, Torild Johansen, Halvor Knutsen, Anna-Karin Ring, Guldborg Søvik, Carl André
Conservation Genetics Resources
4
p. 109-112
2012
Settling-depth vs. genotype and size vs. genotype correlations at the Pan I locus in 0-group Atlantic cod Gadus morhua
Svein-Erik Fevolden, Jon-Ivar Westgaard, Torstein Pedersen, Kim Præbel
Marine Ecology Progress Series
468
p. 267-278
2010
Genetic diversity within and among Atlantic cod (Gadus morhua) farmed in marine cages: a proof-of-concept study for the identification of escapees
Kevin Alan Glover, Geir Dahle, Jon-Ivar Westgaard, Torild Johansen, Halvor Knutsen, Knut Eirik Jørstad
Animal Genetics
41
p. 515-522
2009
A SNP/microsatellite genetic linkage map of the Atlantic cod (Gadus morhua)
Thomas Moen, Madjid Delghandi, Mette Serine Wesmajervi, Kjersti Turid Fjalestad, Jon-Ivar Westgaard
Animal Genetics
40
p. 993-996
2008
Circumpolar genetic population structure of capelin Mallotus villosus
Kim Præbel, Jon-Ivar Westgaard, Svein-Erik Fevolden, Jørgen Schou Christiansen
Marine Ecology Progress Series
360
p. 189-199
2007
Genetic investigation of swimbladder inflation anomalies in the European sea bass, Dicentrarchus labrax L
Stefano Peruzzi, Jon-Ivar Westgaard, B Chatain
Aquaculture
265
p. 102-108
2007
Identification and characterisation of thirteen new microsatellites for Atlantic cod (Gadus morhua L.) from a repeat-enriched library
Jon-Ivar Westgaard, Tekle Tafese, Mette Serine Wesmajervi Breiland, Jørgen Steinvik, Kjersti Fjalestad, Børge Damsgård, Madjid Delghandi
Conservation Genetics
8
p. 749-751
2007
Atlantic cod (Gadus morhua L.) in inner and outer coastal zones of northern Norway display divergent genetic signature at non-neutral loci
Jon-Ivar Westgaard, Svein-Erik Fevolden
Fisheries Research
85
p. 306-315
2007
Comparing microsatellite variation in north-east Atlantic cod (Gadus morhua L.)to genetic structuring as revealed by the pantophysin (Pan I) locus
Tuula Hekla Skarstein, Jon-Ivar Westgaard, Svein-Erik Fevolden
Journal of Fish Biology
70
p. 271-290
2007
Genetic parameters for post-stress cortisol activity and vibriosis resistance in Atlantic cod (Gadus morhua L)
Anne Kettunen, Jon Ivar Westgaard, Stefano Peruzzi, Svein-Erik Fevolden
Aquaculture
272
p. S275-S276
2006
Evaluation of a novel pentaplex microsatellite marker system for paternity studies in Atlantic cod (Gadus morhua L.)
Mette Serine Wesmajervi Breiland, Jon-Ivar Westgaard, Madjid Delghandi
Aquaculture Research
37
p. 1195-1201
2004
Genetic differences between two sympatric morphs of Arctic charr confirmed by microsatellite DNA
Westgaard, Jon-Ivar
Journal of Fish Biology
65
p. 1185-1191
2004
Genetic differences between two sympatric morphs of Arctic charr confirmed by microsatellite DNA
Jon-Ivar Westgaard, Anders Klemetsen, Rune Knudsen
Journal of Fish Biology
65
p. 1185-1191
2003
Simultaneous analysis of six microsatellite markers in Atlantic cod (Gadus morhua): A novel multiplex assay system for use in selective breeding studies
Madjid Delghandi, Atle Mortensen, Jon-Ivar Westgaard
Marine Biotechnology
5
p. 141-148
2023
The One Ocean Expedition: Science and Sailing for the Ocean We Want
Geir Huse, Thierry Baussant, Meike Becker, Martin Biuw, Gunhild Bødtker, Jeremy Cook, Alessio Gomiero, Bjørn Einar Grøsvik, Nils Olav Handegard, Arne Johan Hestnes, Lars Robert Hole, Berengere Husson, Pierre Franqois Jaccard, Johnny Andre Johannessen, Adriana Krolicka, Vidar Surén Lien, Christian Lindemann, Are Olsen, Angelika Renner, Sjur Ringheim Lid, Hans Christian Steen-Larsen, Espen Strand, Jon-Ivar Westgaard, Geir Pedersen
Rapport fra havforskningen
2020
Implementation of Environmental DNA (eDNA) as a Tool for Ecosystem-Based Fisheries Management
Jessica Louise Ray, Mark S. Strom, Torild Johansen, Kelly D. Goodwin, Felipe Arzayus, Edward J. III Gorecki, Richard Methot, Thomas Noji, Andrew Olaf Shelton, Cisco Werner, Daniel Wieczorek, Per Arneberg, Claudia Junge, Mette Mauritzen, Erik Joel Steinar Olsen, Martina H. Stiasny, Jon-Ivar Westgaard, Thierry Baussant, Thomas Gunnar Dahlgren, Aud Larsen, Kim Præbel, Owen S. Wangensteen, Elizabeth A. Andruszkiewicz, Ryan Kelly, Jim Palardy, Ian Salter
2015
Sustainable development of the Nephrops fishery in the Kattegat-Skagerrak region
Rikke P. Frandsen, Søren Qvist Eliasen, Johan Lövgren, Guldborg Søvik, Jordan Feekings, Mats Ulmestrand, Henrik Lund, Bo Andersen, Bjørn Erik Axelsen, Francois Bastardie, Casper Willestofte Berg, Nikolaj Bichel, Dag Mathias Furevik, Jonathan Broch Jacobsen, Torild Johansen, Sigrun Jonasdottir, Patrik Jonsson, Terje Jørgensen, Junita Diana Karlsen, Alf Ring Kleiven, Svein Løkkeborg, Bo Lundgren, Niels Madsen, Sten Munch-Pedersen, Anders Nielsen, J. Rasmus Nielsen, Line Reeh, Jon-Ivar Westgaard
2014
Genetic population structure of northern shrimp, Pandalus borealis, in the Northwest Atlantic
Per Erik Jorde, Guldborg Søvik, Jon-Ivar Westgaard, David Orr, Guoqi Han, Don Stansbury, Knut Eirik Jørstad
2011
Identification of the origin of Altevatn trout (Salmo trutta)
Kim Præbel, Jon-Ivar Westgaard, Svein-Erik Fevolden