Now showing items 1-20 of 917

    • Quantifying the Escape Mortality of Trawl Caught Antarctic Krill (Euphausia superba) 

      Krafft, Bjørn Arne; Krag, Ludvig Ahm; Engås, Arill; Nordrum, Sigve; bruheim, yngve; Herrmann, Bent (Journal article; Peer reviewed, 2016-09-13)
      Antarctic krill (Euphausia superba) is an abundant fishery resource, the harvest levels of which are expected to increase. However, many of the length classes of krill can escape through commonly used commercial trawl mesh ...
    • Toward a model-based prediction system for salmon lice infestation pressure 

      Sandvik, Anne Dagrun; Bjørn, Pål Arne; Ådlandsvik, Bjørn; Asplin, Lars; Skardhamar, Jofrid; Johnsen, Ingrid Askeland; Myksvoll, Mari Skuggedal; Skogen, Morten D. (Journal article; Peer reviewed, 2016-09-08)
      High salmon lice density is a threat to wild and farmed salmonid fish in Norway. To assess and identify areas for high salmon lice infestation pressure, continuous monitoring is necessary. The national Norwegian salmon ...
    • Ocean Acidification Effects on Atlantic Cod Larval Survival and Recruitment to the Fished Population 

      Stiasny, Martina; Mittermayer, Felix; Sswat, Michael; Voss, Rüdiger; Jutfelt, Fredrik; Chierici, Melissa; Puvanendran, Velmurugu; Mortensen, Atle; Reusch, Thorsten B.H.; Clemmesen, Catriona (Journal article; Peer reviewed, 2016-08-23)
      How fisheries will be impacted by climate change is far from understood. While some fish populations may be able to escape global warming via range shifts, they cannot escape ocean acidification (OA), an inevitable consequence ...
    • At-Sea Distribution and Prey Selection of Antarctic Petrels and Commercial Krill Fisheries 

      Descamps, Sebastien; Tarroux, Arnaud; Cherel, Yves; Delord, Karine; Godø, Olav Rune; Kato, Akiko; Krafft, Bjørn Arne; Lorentsen, Svein-Håkon; Ropert-Coudert, Yan; Skaret, Georg; Varpe, Øystein (Journal article; Peer reviewed, 2016-08-17)
      Commercial fisheries may impact marine ecosystems and affect populations of predators like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia superba that is projected to increase ...
    • Crude oil exposures reveal roles for intracellular calcium cycling in haddock craniofacial and cardiac development 

      Sørhus, Elin; Incardona, John P.; Karlsen, Ørjan; Linbo, Tiffany; Sørensen, Lisbet; Nordtug, Trond; van der Meeren, Terje; Thorsen, Anders; Thorbjørnsen, Maja; Jentoft, Sissel; Edvardsen, Rolf; Meier, Sonnich (Journal article; Peer reviewed, 2016-08-10)
      Recent studies have shown that crude oil exposure affects cardiac development in fish by disrupting excitation-contraction (EC) coupling. We previously found that eggs of Atlantic haddock (Melanogrammus aeglefinus) bind ...
    • Can less be more? Effects of reduced frequency of surveys andstock assessments 

      Zimmermann, Fabian; Enberg, Katja (Journal article; Peer reviewed, 2016-08-07)
      Uncertain and inaccurate estimates are a prevailing problem in stock assessment, despite increasingly sophisticated estimation methods and substantial usage of scientific and financial resources. Annual scientific surveys ...
    • Harvest control rules in modern fisheries management 

      Kvamsdal, Sturla F; Eide, Arne; Ekerhovd, Nils-Arne; Enberg, Katja; Gudmundsdottir, Asta; Hoel, Alf Håkon; Mills, Katherine E.; Mueter, Franz J.; Ravn-Jonsen, Lars; Sandal, Leif Kristoffer; Stiansen, Jan Erik; Vestergaard, Niels (Journal article; Peer reviewed, 2016-07-20)
      Harvest control rules have become an important tool in modern fisheries management, and are increasingly adopted to provide continuity in management practices, to deal with uncertainty and ecosystem considerations, and to ...
    • Power budget equations and calibration factors for fish abundance estimation using scientific echo sounders and sonar systems 

      Lunde, Per; Korneliussen, Rolf (Journal article; Peer reviewed, 2016-07-09)
      Acoustic methods used in fish abundance estimation constitute a key part of the analytic assessment that makes the basis for abundance estimation of marine resources. The methods rely on power-budget equations and calibrated ...
    • Does density influence relative growth performance of farm, wild and F1 hybrid Atlantic salmon in semi-natural and hatchery common garden conditions? 

      Harvey, Alison C.; Juleff, Gareth; Carvalho, Gary R.; Taylor, Martin I.; Solberg, Monica Favnebøe; Creer, Simon; Dyrhovden, Lise; Matre, Ivar Helge; Glover, Kevin (Journal article; Peer reviewed, 2016-07-06)
      The conditions encountered by Atlantic salmon, Salmo salar L., in aquaculture are markedly different from the natural environment. Typically, farmed salmon experience much higher densities than wild individuals, and may ...
    • Dispersal similarly shapes both population genetics and community patterns in the marine realm 

      Chust, Guillem; Villarino, Ernesto; Chenuil, Anne; Irigoien, Xabier; Bizsel, Nihayet; Bode, Antonio; Broms, Cecilie; Claus, Simon; Fernández De Puelles, Maria L.; Fonda-Umani, Serena; Hoarau, Galice Guillaume; Mazzocchi, Maria G.; Mozetia, Mozetič; Vandepitte, Leen; Verissimo, Helena; Zervoudaki, Soultana; Borja, Angel (Journal article; Peer reviewed, 2016-06-27)
      Dispersal plays a key role to connect populations and, if limited, is one of the main processes to maintain and generate regional biodiversity. According to neutral theories of molecular evolution and biodiversity, dispersal ...
    • The Ecdysone Receptor (EcR) is a Major Regulator of Tissue Development and Growth in the Marine Salmonid Ectoparasite; Lepeophtheirus salmonis (Copepoda; Caligidae) 

      Sandlund, Liv; Nilsen, Frank; Male, Rune; Dalvin, Sussie (Journal article; Peer reviewed, 2016-06-21)
      The function of the ecdysone receptor (EcR) during development and molting has been thoroughly investigated in some arthropods such as insects but rarely in crustacean copepods such as the salmon louse Lepeophtheirus ...
    • Effects of Pumping Height and Repeated Pumping in Atlantic Salmon Salmo salar 

      Espmark, Åsa Maria Olofsdotter; Midling, Kjell Øyvind; Nilsson, Jonatan; Humborstad, Odd Børre (Journal article; Peer reviewed, 2016-06-17)
      The aim of this study was to evaluate the effects of pumping height and repeated pumping on the generalized stress response and gross injuries in harvest sized Atlantic salmon. Fish pumped from a net pen at either high ...
    • Spring bloom onset in the Nordic Seas 

      Mignot, Alexandre; Ferrari, Raffaele; Mork, Kjell Arne (Journal article; Peer reviewed, 2016-06-15)
      The North Atlantic spring bloom is a massive annual growth event of marine phytoplankton, tiny free-floating algae that form the base of the ocean's food web and generates a large fraction of the global primary production ...
    • Effect of ectoparasite infestation density and life-history stages on the swimming performance of Atlantic salmon Salmo salar 

      Bui, Samantha; Dempster, Timothy David; Remen, Mette; Oppedal, Frode (Journal article; Peer reviewed, 2016-06-14)
      To overcome sustainability obstacles and improve operations, the Atlantic salmon farming industry is testing novel approaches to production. Redistributing farm sites to offshore locations is one such solution; however, ...
    • Evidence for light-controlled migration amplitude of a sound scattering layer in the Norwegian Sea 

      Norheim, Eirik; Klevjer, Thor A.; Aksnes, Dag Lorents (Journal article; Peer reviewed, 2016-06-09)
      The oceanic sound scattering layer (SL) is an ubiquitous acoustic signature of mesopelagic fishes and invertebrates that are important food sources for the oceanic macrofauna and players in the biological carbon pump. We ...
    • Salmon lice (Lepeophtheirus salmonis) development times, body size and reproductive outputs follow universal models of temperature dependence 

      Samsing, Francisca; Oppedal, Frode; Dalvin, Sussie; Johnsen, Ingrid Askeland; Vågseth, Tone; Dempster, Timothy David (Journal article; Peer reviewed, 2016-05-25)
      Temperatures regulate metabolism of marine ectotherms and thereby influence development, reproduction, and, as a consequence, dispersal. Despite the importance of water temperatures in the epidemiology of marine diseases, ...
    • Brain serotonergic activation in growth-stunted farmed salmon: Adaption versus pathology 

      Vindas, Marco Antonio; Johansen, Ida Beitnes; Folkedal, Ole; Höglund, Erik; Gorissen, Marnix; Flik, Gert; Kristiansen, Tore S; Øverli, Øyvind (Journal article; Peer reviewed, 2016-05-25)
      Signalling systems activated under stress are highly conserved, suggesting adaptive effects of their function. Pathologies arising from continued activation of such systems may represent a mismatch between evolutionary ...
    • Lebetus scorpioides and Buenia jeffreysii (Teleostei: Gobiidae) found north of the Arctic Circle 

      Byrkjedal, Ingvar; Wienerroither, Rupert; Jensen, Gjertrud (Journal article; Peer reviewed, 2016-05-20)
      Two gobiid species, Lebetus scorpioides and Buenia jeffreysii, were recorded in northern Norway, for the first time north of the Arctic Circle. While both species were found on the continental shelf west of the Lofoten ...
    • Nearby farms are a source of lice for wild salmonids: a reply to Jansen et al. (2016) 

      Serra-Llinares, Rosa Maria; Bjørn, Pål Arne; Finstad, Bengt; Nilsen, Rune; Asplin, Lars (Journal article; Peer reviewed, 2016-05-17)
      Jansen et al. (2016; Aquacult Environ Interact 8:349-350) question the regression analysis presented in Serra-Llinares et al. (2014; Aquacult Environ Interact 5:1-16), which correlates lice abundances on farmed and wild ...
    • Modelled drift patterns of fish larvae link coastal morphology to seabird colony distribution 

      Sandvik, Hanno; Barrett, Robert T; Erikstad, Kjell E; Myksvoll, Mari Skuggedal; Vikebø, Frode Bendiksen; Yoccoz, Nigel Gilles; Anker-Nilssen, Tycho; Lorentsen, Svein-Håkon; Reiertsen, Tone; Skardhamar, Jofrid; Skern-Mauritzen, Mette; Systad, Geir Helge (Journal article; Peer reviewed, 2016-05-13)
      Colonial breeding is an evolutionary puzzle, as the benefits of breeding in high densities are still not fully explained. Although the dynamics of existing colonies are increasingly understood, few studies have addressed ...