• Physical and nutrient stimuli differentially modulate gut motility patterns, gut transit rate, and transcriptome in an agastric fish, the ballan wrasse 

  Le, Hoang Thi My Dung; Lie, Kai Kristoffer; Etayo, Angela; Rønnestad, Ivar; Sæle, Øystein (Peer reviewed; Journal article, 2021)

  The effects of nutrient and mechanical sensing on gut motility and intestinal metabolism in lower vertebrates remains largely unknown. Here we present the transcriptome response to luminal stimulation by nutrients and an ...

• A deep learning-based method to identify and count pelagic and mesopelagic fishes from trawl camera images 

  Allken, Vaneeda; Rosen, Shale Pettit; Handegard, Nils Olav; Malde, Ketil (Peer reviewed; Journal article, 2021)

  Fish counts and species information can be obtained from images taken within trawls, which enables trawl surveys to operate without extracting fish from their habitat, yields distribution data at fine scale for better ...

• Automatic interpretation of salmon scales using deep learning 

  Vabø, Rune; Moen, Endre; Smolinski, Szymon; Husebø, Åse; Handegard, Nils Olav; Malde, Ketil (Peer reviewed; Journal article, 2021)

  For several fish species, age and other important biological information is manually inferred from visual scrutinization of scales, and reliable automatic methods are not widely available. Here, we apply Convolutional ...

• Discerning the Management-Relevant Ecology and Distribution of Sea Pens (Cnidaria: Pennatulacea) in Norway and Beyond 

  Ross, Rebecca; Gonzalez-Mirelis, Genoveva; Lozano, Pablo; Buhl-Mortensen, Pål (Peer reviewed; Journal article, 2021)

  Sea pens are considered to be of conservation relevance according to multiple international legislations and agreements. Consequently, any information about their ecology and distribution should be of use to management ...

• Sentinels in Salmon Aquaculture: Heart Rates Across Seasons and During Crowding Events 

  Warren-Myers, Fletcher; Hvas, Malthe; Vågseth, Tone; Dempster, Tim; Oppedal, Frode (Peer reviewed; Journal article, 2021)

  Advances in tag technology now make it possible to monitor the behavior of small groups of individual fish as bioindicators of population wellbeing in commercial aquaculture settings. For example, tags may detect unusual ...

• Trends in marine survival of Atlantic salmon populations in eastern Canada 

  Pardo, Sebastián A; Bolstad, Geir Hysing; Dempson, J. Brian; April, Julien; Jones, Ross A; Raab, Dustin; Hutchings, Jeffrey (Peer reviewed; Journal article, 2021)

  Declines in wild Atlantic salmon (Salmo salar) abundance throughout the north Atlantic are primarily attributed to decreases in survival at sea. However, comparing trends in marine survival among populations is challenging ...

• Ocean acidification state variability of the Atlantic Arctic Ocean around northern Svalbard 

  Jones, Elizabeth Marie; Chierici, Melissa; Menze, Sebastian; Fransson, Agneta; Ingvaldsen, Randi Brunvær; Lødemel, Helene Hodal (Peer reviewed; Journal article, 2021)

  The Svalbard shelf and Atlantic Arctic Ocean are a transition zone between northward flowing Atlantic Water and ice-covered waters of the Arctic. Effects of regional ocean warming, sea ice loss and greater influence of ...

• Ontogeny-Specific Skeletal Deformities in Atlantic Haddock Caused by Larval Oil Exposure 

  Olsvik, Pål Asgeir; Sørhus, Elin; Meier, Sonnich; Torvanger, Ingrid; Thorbjørnsen, Maja; Thorsen, Anders; Sørensen, Lisbet; Fjelldal, Per Gunnar; Karlsen, Ørjan; Guimaraes, Igo G.; Lie, Kai Kristoffer (Peer reviewed; Journal article, 2021)

  Bone deformities are one of the main effects of crude oil exposure in marine fish larvae. Craniofacial and jaw deformities, if severe enough, may restrict feeding and ultimately kill the developing larvae. This study aimed ...

• Where and How the East Madagascar Current Retroflection Originates? 

  Ramanantsoa, Heriniaina Juliano Dani; Penven, Pierrick; Pappukutty, Raj Roshin; Renault, Lionel; Ponsoni, L; Ostrowski, Marek; Dilmahamod, A.F; Rouault, M (Peer reviewed; Journal article, 2021)

  The East Madagascar Current (EMC) is one of the western boundary currents of the South Indian Ocean. As such, it plays an important role in the climate system by transporting water and heat toward the pole and recirculating ...

• Full production cycle, commercial scale culture of salmon in submerged sea-cages with air domes reduces lice infestation, but creates production and welfare challenges 

  Warren-Myers, Fletcher; Vågseth, Tone; Folkedal, Ole; Stien, Lars Helge; Fosse, Jan Olav; Dempster, Tim; Oppedal, Frode (Peer reviewed; Journal article, 2021)

  Structural modification of sea cages is continually changing to counter major production issues associated with commercial salmon farming. For example, snorkels and skirts are added to cages to reduce salmon lice infestations, ...

• The effect of fasting period on swimming performance, blood parameters and stress recovery in Atlantic salmon post molts 

  Hvas, Malthe; Nilsson, Jonatan; Vågseth, Tone; Nola, Velimir; Fjelldal, Per Gunnar; Hansen, Tom Johnny; Oppedal, Frode; Stien, Lars Helge; Folkedal, Ole (Peer reviewed; Journal article, 2021)

  Individually tagged Atlantic salmon postsmolts (≈1200 g, 46 cm) reared in triplicate indoor holding tanks were fasted for 8 weeks at 12 °C and subsequently refed for 5 weeks, whereafter they were transferred to triplicate ...

• Antibacterial treatment of lumpfish (Cyclopterus lumpus) experimentally challenged with Vibrio anguillarum, atypical Aeromonas salmonicida and Pasteurella atlantica 

  Kverme, Karen Obrestad; Kallekleiv, Marielle; Larsen, Kristina; Rønneseth, Anita; Wergeland, Heidrun I.; Samuelsen, Ole B.; Haugland, Gyri T. (Peer reviewed; Journal article, 2021)

  Lumpfish is a novel farmed species used as cleaner fish for the removal of lice from farmed salmon. As often with new, farmed species, there are challenges with bacterial infections. The frequency of prescription of ...

• Genomic characterization of multidrug-resistant Bacillus toyonensis strain 4HC1 isolated from marine plastic in Norway 

  Radisic, Vera; Marathe, Nachiket (Peer reviewed; Journal article, 2021)

  Bacillus toyonensis is widespread in nature. Multidrug-resistant B. toyonensis strain 4HC1 was isolated from polyethylene submerged in the water column near a beach in Øygarden, Norway. We analysed the whole genome sequence ...

• Submerged cage aquaculture of marine fish: a review of the biological challenges and opportunities 

  Sievers, Michael; Korsøen, Øyvind Johan; Warren-Myers, Fletcher; Oppedal, Frode; Macauley, Georgia; Folkedal, Ole; Dempster, Tim (Peer reviewed; Journal article, 2021)

  Surface-based cages are the dominant production technology for the marine finfish aquaculture industry. However, issues such as extreme weather events, poor environmental conditions, interactions with parasites, and conflicts ...

• Population structure of European sprat (Sprattus sprattus) in the Greater North Sea ecoregion revealed by otolith shape analysis 

  Saltalamacchia, Francesco; Berg, Florian; Casini, Michele; Davies, Julie Olivia; Bartolino, Valerio (Peer reviewed; Journal article, 2021)

  A successful discrimination of fish populations is essential for sustainable management and assessment. Otolith shape analysis has been used on several species to reveal their population structure. Our aim was to use the ...

• Autonomous Surface and Underwater Vehicles as Effective Ecosystem Monitoring and Research Platforms in the Arctic—The Glider Project 

  Camus, Lionel; Andrade, Hector; Aniceto, Ana Sofia; Aune, Magnus; Bandara, Kanchana; Basedow, Sünnje Linnéa; Christensen, Kai Håkon; Cook, Jeremy; Daase, Malin; Dunlop, Katherine Mary; Falk-Petersen, Stig; fietzek, Peter; Fonnes, Gro; Ghaffari, Peygham; Gramvik, Geir; Graves, Inger; Hayes, Daniel; Langeland, Tom; Lura, Harald; Marin, Trond Kristiansen; Nøst, Ole Anders; Peddie, David; Pederick, Joel; Pedersen, Geir; Sperrevik, Ann Kristin; Sørensen, Kai; Tassara, Luca; Tjøstheim, Sigurd; Tverberg, Vigdis; Dahle, Salve (Peer reviewed; Journal article, 2021)

  Effective ocean management requires integrated and sustainable ocean observing systems enabling us to map and understand ecosystem properties and the effects of human activities. Autonomous subsurface and surface vehicles, ...

• Ice-Associated Amphipods in a Pan-Arctic Scenario of Declining Sea Ice 

  Hop, Haakon; Vihtakari, Mikko; Bluhm, Bodil; Daase, Malin; Gradinger, Rolf; Melnikov, Igor A. (Peer reviewed; Journal article, 2021)

  Sea-ice macrofauna includes ice amphipods and benthic amphipods, as well as mysids. Amphipods are important components of the sympagic food web, which is fuelled by the production of ice algae. Data on the diversity of ...

• Copernicus Marine Service Ocean State Report, Issue 5 

  von Schuckmann, Karina; Traon, Pierre-Yves; Smith, Neville; Pascual, Ananda; Djavidnia, Samuel; Gattuso, Jean-Pierre; Grégoire, Marilaure; Aaboe, Signe; Alari, Victor; Down, Emily; Knol-Kauffman, Maaike; Lavergne, Thomas; Lien, Vidar Surén; Lind, Sigrid; Møgster, Jane S.; Nilsen, Jan Even Øie; Mork, Kjell Arne; Palerme, Cyril; Raj, Roshin Pappukutty; Vindenes, Håvard (Peer reviewed; Journal article, 2021)

• Skilful prediction of cod stocks in the North and Barents Sea a decade in advance 

  Koul, Vimal; Sguotti, Camilla; Årthun, Marius; Brune, Sebastian; Dusterhus, Andre; Bogstad, Bjarte; Ottersen, Geir; Baehr, Johanna; Schrum, Corinna (Peer reviewed; Journal article, 2021)

  Reliable information about the future state of the ocean and fish stocks is necessary for informed decision-making by fisheries scientists, managers and the industry. However, decadal regional ocean climate and fish stock ...

• The impact of surface currents on the wave climate in narrow fjords 

  Christakos, Konstantinos; Björkqvist, Jan-Victor; Breivik, Øyvind; Tuomi, Laura; Furevik, Birgitte Rugaard; Albretsen, Jon (Peer reviewed; Journal article, 2021)

  This study investigates the effect of surface currents on wind-generated waves in a complex coastal system with narrow fjords. The simulations are based on a phase-averaged wave model forced with surface currents from a ...

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