Blar i Bergen Open Research Archive på forfatter "Nilsen, Frank"

Viser treff 61-73 av 73

    • Small, charged proteins in salmon louse (Lepeophtheirus salmonis) secretions modulate Atlantic salmon (Salmo salar) immune responses and coagulation 

      Øvergård, Aina-Cathrine; Midtbø, Helena Marie Doherty; Hamre, Lars Are; Dondrup, Michael; Bjerga, Gro Elin Kjæreng; Larsen, Øivind; chettri, Jiwan Kumar; Buchmann, Kurt; Nilsen, Frank; Grotmol, Sindre (Journal article; Peer reviewed, 2022)
      Little is known about glandular proteins secreted from the skin- and blood-feeding ectoparasite salmon louse (Lepeophtheirus salmonis). The labial gland has ducts extending into the oral cavity of the lice, and the present ...

    • Still Arctic? — The changing Barents Sea 

      Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Journal article; Peer reviewed, 2023)
      The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. ...

    • Structure and Transport of Atlantic Water North of Svalbard From Observations in Summer and Fall 2018 

      Kolås, Eivind; Koenig, Zoé Charlotte; Fer, Ilker; Nilsen, Frank; Marnela, Marika (Journal article; Peer reviewed, 2020)
      The transport of warm Atlantic Waters north of Svalbard is one of the major heat and salt sources to the Arctic Ocean. The circulation pathways and the associated heat transport influence the variability in the Arctic sea ...

    • The transcriptomic response of adult salmon lice (Lepeophtheirus salmonis) to reduced salinity 

      Borchel, Andreas; Heggland, Erna Irene; Nilsen, Frank (Journal article; Peer reviewed, 2021)
      Salmon lice (Lepeophtheirus salmonis) are marine parasitic copepods living on salmonids and are challenging for salmon aquaculture. One of several treatment methods is the application of freshwater to the fish which can ...

    • Two apolipoproteins in salmon louse (Lepeophtheirus salmonis), apolipoprotein 1 knock down reduces reproductive capacity 

      Khan, Muhammad Tanveer; Dalvin, Sussie; Nilsen, Frank; Male, Rune (Journal article; Peer reviewed, 2021)
      The salmon louse, Lepeophtheirus salmonis is an ectoparasite of salmonid fish in the Northern Hemisphere, causing large economical losses in the aquaculture industry and represent a threat to wild populations of salmonids. ...

    • Unravelling the Complex Duplication History of Deuterostome Glycerol Transporters 

      Yilmaz, Ozlem; Chauvigné, Francois; Ferré, Alba; Nilsen, Frank; Fjelldal, Per Gunnar; Cerdà, Joan; Finn, Roderick Nigel (Journal article; Peer reviewed, 2020)
      Transmembrane glycerol transport is an ancient biophysical property that evolved in selected subfamilies of water channel (aquaporin) proteins. Here, we conducted broad level genome (>550) and transcriptome (>300) analyses ...

    • Variability and decadal trends in the Isfjorden (Svalbard) ocean climate and circulation – An indicator for climate change in the European Arctic 

      Skogseth, Ragnheid; Olivier, Léa L.A.; Nilsen, Frank; Falck, Eva; Fraser, Neil J.; Tverberg, Vigdis; Ledang, Anna Birgitta; Vader, Anna; Jonassen, Marius Opsanger; Søreide, Janne; Cottier, Finlo Robert; Berge, Jørgen; Ivanov, Boris V.; Falk-Petersen, Stig (Journal article; Peer reviewed, 2020)
      Isfjorden, a broad Arctic fjord in western Spitsbergen, has shown significant changes in hydrography and inflow of Atlantic Water (AW) the last decades that only recently have been observed in the Arctic Ocean north of ...

    • Vurdering av lakselusindusert villfiskdødelighet per produksjonsområde i 2016 og 2017 

      Nilsen, Frank; Ellingsen, Ingrid; Finstad, Bengt; Jansen, Peder A.; Karlsen, Ørjan; Kristoffersen, Anja B.; Sandvik, Anne D.; Sægrov, Harald; Ugedal, Ola; Vollset, Knut W.; Myksvoll, Mari Skuggedal (Research report, 2017)
      Ekspertgruppen ble i mars 2017 oppnevnt for ett år for å foreta en vurdering av lakselusindusert dødelighet på villfisk i 13 produksjonsområder i Norge. En foreløpig rapport basert på data fra 2016 ble levert i april 2017 ...

    • Warming of Atlantic Water in two west Spitsbergen fjords over the last century (1912-2009) 

      Pavlov, Alexey K.; Tverberg, Vigdis; Ivanov, Boris; Nilsen, Frank; Falk-Petersen, Stig; Granskog, Mats A. (Peer reviewed; Journal article, 2013-05-06)
      The recently observed warming of west Spitsbergen fjords has led to anomalous sea-ice conditions and has implications for the marine ecosystem. We investigated long-term trends of maximum temperature of Atlantic Water (AW) ...

    • Water mass modification in an Arctic fjord through cross-shelf exchange: The seasonal hydrography of Kongsfjorden, Svalbard 

      Cottier, Finlo; Tverberg, Vigdis; Inall, Mark; Svendsen, Harald; Nilsen, Frank; Griffiths, Colin (Journal article, 2005-12-08)
      Kongsfjorden and the West Spitsbergen Shelf is a region whose seasonal hydrography is dominated by the balance of Atlantic Water, Arctic waters, and glacial melt. Regional seasonality and the cross-shelf exchange processes ...

    • Whole genome sequencing of the fish pathogen Francisella noatunensis subsp. orientalis Toba04 gives novel insights into Francisella evolution and pathogenecity 

      Sridhar, Settu; Sharma, Animesh; Kongshaug, Heidi; Nilsen, Frank; Jonassen, Inge (Peer reviewed; Journal article, 2012-11-06)
      Background: Francisella is a genus of gram-negative bacterium highly virulent in fishes and human where F. tularensis is causing the serious disease tularaemia in human. Recently Francisella species have been reported to ...

    • Wind-Driven Variability in the Spitsbergen Polar Current and the Svalbard Branch Across the Yermak Plateau 

      Nilsen, Frank; Ersdal, Eli Anne; Skogseth, Ragnheid (Journal article; Peer reviewed, 2021)
      The Yermak Plateau (YP) acts as a guidance or barrier for the West Spitsbergen Current (WSC), which either crosses the plateau or flows around it to enter the Arctic Ocean. Closer to the West Spitsbergen coast, the Spitsbergen ...

    • Without a pinch of salt: effect of low salinity on eggs and nauplii of the salmon louse (Lepeophtheirus salmonis) 

      Borchel, Andreas; Heggland, Erna Irene; Nilsen, Frank (Journal article; Peer reviewed, 2023)
      The salmon louse is an economically important parasite on Atlantic salmon and poses a major threat to aquaculture. Several treatment methods have lost their effect due to resistance development in the lice. A rather new ...