Browsing Articles by Title

Now showing items 2378-2397 of 3016

    • Salmon lice dispersion in a northern Norwegian fjord system and the impact of vertical movements 

      Johnsen, Ingrid Askeland; Asplin, Lars; Sandvik, Anne Dagrun; Serra-Llinares, Rosa Maria (Journal article; Peer reviewed, 2016-02-02)
      The abundance and distribution of salmon lice Lepeophtheirus salmons originating from fish farms in a northern Norwegian fjord during the summer of 2010 was investigated by means of a numerical model, underpinned by field ...

    • Salmon lice evasion, susceptibility, retention, and development differ amongst host salmonid species. 

      Bui, Samantha; Haltuunen, Elina; Mohn, Agnes; Vågseth, Tone; Oppedal, Frode (Peer reviewed; Journal article, 2017)
      With different ecological characteristics amongst salmonid species, their response to parasitic infestation is likely to vary according to their spatial and temporal overlap with the parasite. This study investigated the ...

    • Salmon lice in the Pacific Ocean show evidence of evolved resistance to parasiticide treatment 

      Godwin, Sean C.; Bateman, Andrew W.; Kuparinen, Anna; Johnson, Rick; Powell, John; Speck, Kelly; Hutchings, Jeffrey (Peer reviewed; Journal article, 2022)
      Parasitic salmon lice (Lepeophtheirus salmonis) threaten the economic and ecological sustainability of salmon farming, and their evolved resistance to treatment with emamectin benzoate (EMB) has been a major problem for ...

    • Salmon lice infection on wild salmonids in marine protected areas: an evaluation of the Norwegian ‘National Salmon Fjords 

      Serra-Llinares, Rosa Maria; Bjørn, Pål Arne; Finstad, Bengt; Nilsen, Rune; Harbitz, Alf; Berg, Marius; Asplin, Lars (Journal article; Peer reviewed, 2014-02-05)
      In Norway, 29 fjords and 52 rivers have been designated for protection in order to prevent the infection of important populations of wild salmonids with salmon lice of farm origin. We evaluated the effect of this protection ...

    • Salmon lice nauplii and copepodids display different vertical migration patterns in response to light 

      Szetey, Aylah; Wright, Daniel William; Oppedal, Frode; Dempster, Timothy David (Peer reviewed; Journal article, 2021)
      Light is a fundamental environmental cue which influences the migration of many marine organisms. For the salmon louse Lepeophtheirus salmonis, light is believed to drive the diel vertical migration behaviour of their ...

    • Salmon lice sampled from wild Atlantic salmon and sea trout throughout Norway display high frequencies of the genotype Associated with pyrethroid resistance 

      Fjørtoft, Helene Børretzen; Nilsen, Frank; Besnier, Francois; Stene, Anne; Bjørn, Pål Arne; Tveten, Ann-Kristin; Aspehaug, Vidar Teis; Finstad, Bengt; Glover, Kevin (Journal article; Peer reviewed, 2019)
      Atlantic salmon Salmo salar aquaculture is based on the use of open-pen sea cages, with the consequence that farmed fish are both recipients and sources of pathogens from surrounding waters. Currently, the parasitic salmon ...

    • Salmon lice survive the straight shooter: A commercial scale sea cage trial of laser delousing 

      Bui, Samantha; Geitung, Lena; Oppedal, Frode; Barrett, Luke T. (Peer reviewed; Journal article, 2020)
      Ectoparasitic salmon louse (Lepeophtheirus salmonis) infestations are costly for Atlantic salmon (Salmo salar) farmers in Norway. As a result, there is a strong desire for solutions to prevent and control infestations, and ...

    • Salmon lice threaten growth, osmoregulation and survival in anadromous Arctic char post-smolts 

      Fjelldal, Per Gunnar; Hansen, Tom Johnny; Karlsen, Ørjan; Wright, Daniel William (Peer reviewed; Journal article, 2019)
      High salmon lice (Lepeophtheirus salmonis) infestation levels resulting from intensive salmonid sea-cage aquaculture can threaten populations of wild salmonid hosts. This includes anadromous Arctic char (Salvelinus alpinus), ...

    • Salmon lice treatments and salmon mortality in Norwegian aquaculture: a review 

      Overton, Kathy; Dempster, Tim; Oppedal, Frode; Kristiansen, Tore S; Gismervik, Kristine; Stien, Lars Helge (Journal article; Peer reviewed, 2018)
      With the expansion of Atlantic salmon aquaculture, the economic and ecological impacts of salmon lice (Lepeophtheirus salmonis) has increased. Norway battles this problematic parasite with various control and preventative ...

    • Salmon lice – impact on wild salmonids and salmon aquaculture 

      Torrissen, Ole; Jones, S.; Asche, F.; Guttormsen, A.; Skilbrei, Ove; Nilsen, Frank; Horsberg, T. E.; Jackson, D. (Journal article; Peer reviewed, 2013-01-13)
      Salmon lice, Lepeophtheirus salmonis, are naturally occurring parasites of salmon in sea water. Intensive salmon farming provides better conditions for parasite growth and transmission compared with natural conditions, ...

    • Salmon lice-induced mortality of Atlantic salmon during post-smolt migration in Norway 

      Johnsen, Ingrid Askeland; Harvey, Alison C.; Sævik, Pål Næverlid; Sandvik, Anne Dagrun; Ugedal, Ola; Ådlandsvik, Bjørn; Wennevik, Vidar; Glover, Kevin; Karlsen, Ørjan (Peer reviewed; Journal article, 2020)

    • The salmon louse genome may be much larger than sequencing suggests. 

      Wyngaard, Grace; Skern-Mauritzen, Rasmus; Malde, Ketil; Prendergast, Rachel; Peruzzi, Stefano (Peer reviewed; Journal article, 2022)
      The genome size of organisms impacts their evolution and biology and is often assumed to be characteristic of a species. Here we present the first published estimates of genome size of the ecologically and economically ...

    • The salmon louse genome: Copepod features and parasitic adaptations 

      Skern-Mauritzen, Rasmus; Malde, Ketil; Eichner, Christiane; Dondrup, Michael; Furmanek, Tomasz; Besnier, Francois; Komisarczuk, Anna Zofia; Nuhn, Michael; Dalvin, Sussie; Edvardsen, Rolf Brudvik; Klages, Sven; Huettel, Bruno; Stueber, Kurt; Grotmol, Sindre; Karlsbakk, Egil Erlingsson; Kersey, Paul; Leong, Jong S; Glover, Kevin Alan; Reinhardt, Richard; Lien, Sigbjørn; Jonassen, Inge; Koop, Ben F; Nilsen, Frank (Peer reviewed; Journal article, 2021)
      Copepods encompass numerous ecological roles including parasites, detrivores and phytoplankton grazers. Nonetheless, copepod genome assemblies remain scarce. Lepeophtheirus salmonis is an economically and ecologically ...

    • Salmon louse infestation levels on sea trout can be predicted from a hydrodynamic lice dispersal model 

      Bøhn, Thomas; Nilsen, Rune; Gjelland, Karl Øystein; Biuw, Martin; Sandvik, Anne Dagrun; Primicerio, Raul; Karlsen, Ørjan; Serra Llinares, Rosa Maria (Peer reviewed; Journal article, 2021)
      The abundance of the parasitic salmon louse has increased with the growth in aquaculture of salmonids in open net pens. This represents a threat to wild salmonid populations as well as a key limiting factor for salmon ...

    • Salmonid alphavirus infection causes skin dysbiosis in Atlantic salmon (Salmo salar L.) post-smolts 

      Reid, Kristin M; Patel, Sonal; Robinson, Aaron J; Bu, Lijing; Jarungsriapisit, Jiraporn; Moore, Lindsey; Salinas, Irene (Peer reviewed; Journal article, 2017)

    • Sampling of Atlantic salmon using the Norwegian Quality cut (NQC) vs. Whole fillet; differences in contaminant and nutrient contents 

      Nøstbakken, Ole Jakob; Moxness Reksten, Amalie; Hannisdal, Rita; Dahl, Lisbeth; Duinker, Arne (Peer reviewed; Journal article, 2023)
      Risk- benefit assessments of seafood require high-quality food composition data. In accordance with EU regulations, Atlantic salmon (Salmo salar) has conventionally been sampled using the Norwegian Quality Cut (NQC), a ...

    • Sampling planktonic salmon lice in Norwegian fjords 

      Skardhamar, Jofrid; Fagerli, Margrethe Nilsen; Reigstad, Marit; Sandvik, Anne Dagrun; Bjørn, Pål Arne (Journal article; Peer reviewed, 2019)
      Risk of mortality of wild salmon caused by salmon lice is used as an index for managing aquaculture production in Norway and is based on monitoring of lice attached to wild salmonids and modelled concentrations of lice ...

    • Sampling protocol for the determination of nutrients and contaminants in fish and other seafood – The EAF-Nansen Programme 

      Reksten, Amalie Moxness; Bøkevoll, Annbjørg; Frantzen, Sylvia; Lundebye, Anne-Katrine; Kögel, Tanja; Kolås, Kjersti; Aakre, Inger; Kjellevold, Marian (Peer reviewed; Journal article, 2020)
      Seafood plays a central role in global food and nutrition security. However, there is a lack of data on the concentration of nutrients and contaminants in fish and other seafood, especially in low- and middle-income ...

    • Sandbanks, sandwaves and megaripples on Spitsbergenbanken, Barents Sea 

      Bellec, Valérie K.; Bøe, Reidulv; Bjarnadóttir, Lilja Rún; Albretsen, Jon; Dolan, Margaret F.J.; Chand, Shyam; Thorsnes, Terje; Jakobsen, Frank Werner; Nixon, Chantel; Plassen, Liv; Jensen, Henning; Baeten, Nicole Jeanne; Olsen, Heidi; Elvenes, Sigrid (Journal article; Peer reviewed, 2019)
      Recently acquired multibeam echosounder data from the shallowest part (26–53 m depth) of Spitsbergenbanken in the western Barents Sea reveal a variety of bedforms, including megaripples, sandwaves and sandbanks. The bedforms ...

    • Sarcotretes scopeli, a lernaeid copepod new to Norway 

      Gjøsæter, Jakob (Journal article; Peer reviewed, 1971-09-10)
      Sarcotretes scopeli, parasitic on Benthosema glaciale, is recorded for the first time in Norway. 3.6% of the catch from the Bergen area and 1.9% from Sognefjorden was infested. The parasite seems to retard the growth and ...