• Mechanisms regulating oocyte recruitment and skippedspawning in Northeast Arctic cod (Gadus morhua L.) 

      Skjæraasen, Jon Egil; Kennedy, James; Thorsen, Anders; Fonn, Merete; Strand, Bente; Mayer, Ian; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2009-09)
      To examine mechanisms that affect fecundity, atresia and skipped spawning in Northeast Arctic cod (Gadus morhua L.), we conducted an experiment where wild-caught cod (>60 cm) kept under restricted food regimes were subjected ...
    • Thermal niche of Atlantic cod Gadus morhua: limits, tolerance and optima 

      Righton, David; Andersen, Ken Haste; Neat, Francis; Thorsteinsson, Vilhjalmur; Steingrund, P.; Svedäng, Henrik; Michalsen, Kathrine; Hinrichsen, Hans-Harald; Bendall, Victoria; Neuenfeldt, Stefan; Wright, Peter; Jonsson, Patrik; Huse, Geir; Kooij, Jeroen van der; Mosegaard, Henrik; Hüssy, Karin; Metcalfe, Julian D. (Journal article; Peer reviewed, 2010)
      Recent studies in the marine environment have suggested that the limited phenotypic plasticity of cold-adapted species such as Atlantic cod Gadus morhua L. will cause distributions to shift toward the poles in response to ...
    • Learning and anticipatory behaviour in a “sit-and-wait” predator: the Atlantic halibut 

      Nilsson, Jonatan; Kristiansen, Tore S.; Fosseidengen, Jan Erik; Stien, Lars Helge; Fernö, Anders; van den Bos, Ruud (Journal article; Peer reviewed, 2010-03)
      We studied the learning capacities and anticipatory behaviour in a “sit-and-wait” predatory fish, the Atlantic halibut, Hippoglossus hippoglossus. In Experiment 1 two groups of halibut received series of light flashes ...
    • Risk Assessment of Catch and Release 

      Olsen, Rolf Erik; Næsje, Tor Fredrik; Poppe, Trygve; Sneddon, Lynne; Webb, John (Research report, 2010-03-17)
    • Long-term changes in the total egg production of Norwegian spring-spawning herring Clupea harengus (L.)—Implications of variations in population structure and condition factor 

      Ndjaula, Hilkka O.N.; Nash, Richard D.M.; Slotte, Aril; Johannessen, Arne; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2010-05)
      The reproductive potential of Norwegian spring-spawning herring (Clupea harengus) was estimated in terms of total egg production (TEP) for the period 1935–2005, using a model where spawning stock numbers (SSN)-, weight- ...
    • The fate of vitellogenic follicles in experimentally monitored Atlantic cod Gadus morhua (L.): Application to stock assessment 

      Witthames, Peter R.; Thorsen, Anders; Kjesbu, Olav Sigurd (Journal article; Peer reviewed, 2010-05)
      In this paper we report on the fate of vitellogenic follicles (VF) as either alpha atretic follicles (αF) or post-ovulatory follicles (POFs) using histology and captive Atlantic cod (Gadus morhua) in three experiments. In ...
    • Stereological calibration of the profile method to quickly estimate atresia levels in fish 

      Kjesbu, Olav Sigurd; Fonn, Merete; Gonzáles, Barbara Dunia; Nilsen, Trygve (Journal article; Peer reviewed, 2010-05)
      The (physical) ‘disector method’, a frequently cited stereological technique, has so far received little attention within fish fecundity studies, although it can be used to provide unbiased, assumption-free data on levels ...
    • RNA deep sequencing of the Atlantic cod transcriptome 

      Johansen, Steinar D.; Karlsen, Bård Ove; Furmanek, Tomasz; Andreassen, Morten; Jørgensen, Tor Erik; Bizuayehu, Teshome T.; Breines, Ragna; Emblem, Åse; Kettunen, Päivi; Luukko, Keijo; Edvardsen, Rolf B.; Nordeide, Jarle Tryti; Coucheron, Dag H.; Moum, Truls (Journal article; Peer reviewed, 2010-05-20)
      The Atlantic cod (Gadus morhua) is an emerging aquaculture species. Efforts to develop and characterize its genomic recourses, including draft-grade genome sequencing, have been initiated by the research community. The ...
    • EST resources and establishment and validation of a 16 k cDNA microarray from Atlantic cod (Gadus morhua) 

      Edvardsen, Rolf B.; Malde, Ketil; Mittelholzer, Christian; Taranger, Geir Lasse; Nilsen, Frank (Journal article; Peer reviewed, 2010-06-28)
      The Atlantic cod, Gadus morhua, is an important species both for traditional fishery and increasingly also in fish farming. The Atlantic cod is also under potential threat from various environmental changes such as pollution ...
    • Exploration and learning of demand-feeding in Atlantic cod (Gadus morhua) 

      Nilsson, Jonatan; Torgersen, Thomas (Journal article; Peer reviewed, 2010-08-15)
      A bite–and–pull demand–feeding system was introduced to groups of cultured cod (Gadus morhua). For half of the groups trigger actuations were rewarded with food, while actuations were unrewarded in the other groups. ...
    • Marine indikatorer 

      van der Meeren, Gro; Øigård, Tor Arne; Øien, Nils; Nilssen, Kjell Tormod; Oug, Eivind; Sunnanå, Knut; Jakobsen, Tore; Mehl, Sigbjørn; Kvamme, Cecilie; Torstensen, Else; Stenevik, Erling Kåre; Planque, Benjamin; Helle, Gunnar; Gjøsæter, Jakob; Skiftesvik, Anne Berit; Aglen, Asgeir; Johannessen, Tore; Dommasnes, Are; Naustvoll, Lars-Johan; Moy, Frithjof E.; Falkenhaug, Tone; Melle, Webjørn; Knutsen, Tor; Eriksen, Elena; Jørgensen, Lis Lindal; Fosså, Jan Helge; Bannister, Raymond; Buhl-Mortensen, Lene; Buhl-Mortensen, Pål; Strand, Øivind; Søvik, Guldborg; Jelmert, Anders; Knutsen, Jan Atle; Enersen, Svein Erik; Edvardsen, Hanne; Kroglund, Tone; Pedersen, Atle; Eikrem, Wenche; Bekkby, Trine; Tveite, Stein (DN-utredning;4-2010, Chapter, 2010-09)
      The Nature Index (NI) is established to get an overview of the state and development of biodiversity within the major ecosystems of Norway. It includes marine, limnic and terrestrial ecosystems. The aim of the index is to ...
    • Stimfisk - et viktig element i det dynamiske havmiljøet 

      van der Meeren, Gro; Aglen, Asgeir; Eriksen, Elena; Johannesen, Edda; Knutsen, Tor; Stenevik, Erling Kåre; Tjelmeland, Sigurd; Øien, Nils; Lorentsen, Svein-Håkon (Conference object, 2010-09-23)
    • Mortality of mackerel (Scomber scombrus L.) after pursing and slipping from a purse seine 

      Huse, Irene; Vold, Aud (Journal article; Peer reviewed, 2010-10)
      A new method was used to study the effect of crowding and subsequent slipping from a purse seine on the mortality of Atlantic mackerel (Scomber scombrus L.). Mackerel were allowed to swim from a purse seine through a ...
    • Genomic organization and gene expression of the multiple globins in Atlantic cod: conservation of globin-flanking genes in chordates infers the origin of the vertebrate globin clusters 

      Wetten, Ola F.; Nederbragt, Alexander J.; Wilson, Robert C.; Jakobsen, Kjetill S.; Edvardsen, Rolf B.; Andersen, Øivind (Journal article; Peer reviewed, 2010-10-20)
      Background: The vertebrate globin genes encoding the α- and β-subunits of the tetrameric hemoglobins are clustered at two unlinked loci. The highly conserved linear order of the genes flanking the hemoglobins provides a ...
    • Forensic identification of severely degraded Atlantic salmon (Salmo salar) and rainbow trout (Oncorhynchus mykiss) tissues 

      Dalvin, Sussie Trine; Glover, Kevin A.; Sørvik, Anne Grete Eide; Seliussen, Bjørghild Breistein; Taggart, John B. (Journal article; Peer reviewed, 2010-11-03)
      Aquaculture is a globally important and rapidly growing industry. It contributes positively to the economy and sustainability of coastal communities, but it is not without regulatory challenges. These challenges are diverse, ...
    • Feeding preference of recaptured Atlantic salmon Salmo salar following simulated escape from fish pens during autumn 

      Olsen, Rolf Erik; Skilbrei, Ove (Journal article; Peer reviewed, 2010-12-21)
      Escapes of farmed fish from coastal farms around the world are believed to have genetic and ecological consequences for wild fish populations. Each year there are numerous escapes of adult farmed Atlantic salmon Salmo ...
    • Er norsk lakseproduksjon berekraftig? 

      Torrissen, Ole (Conference object, 2011-01-18)
    • Vurdering av Naturindekser i Norge med fokus på de marine indikatorene - Status og videre planer 

      van der Meeren, Gro (Rapport fra Havforskningen;3-2011, Working paper, 2011-02)
      The aim of this report is to state the progress of the work at IMR to develop further the marine bases for the database of Nature indexes of Norway. Time series on krill and amphiopds are being analysed, as well as papers ...
    • Evolutionary principles and their practical application 

      Hendry, Andrew P.; Kinnison, Michael T.; Heino, Mikko; Day, Troy; Smith, Thomas B.; Fitt, Gary; Bergstrom, Carl T.; Oakeshott, John; Jørgensen, Peter S.; Zalucki, Myron P.; Gilchrist, George; Southerton, Simon; Sih, Andrew; Strauss, Sharon; Denison, Robert F.; Carroll, Scott P. (Journal article; Peer reviewed, 2011-02-17)
      Evolutionary principles are now routinely incorporated into medicine and agriculture. Examples include the design of treatments that slow the evolution of resistance by weeds, pests, and pathogens, and the design of breeding ...