Now showing items 1457-1476 of 2204

    • A new aquareovirus causing high mortality in farmed Atlantic halibut fry in Norway 

      Blindheim, Steffen H.; Nylund, Are; Watanabe, Kuninori; Plarre, Heidrun; Erstad, Børre; Nylund, Stian (Peer reviewed; Journal article, 2015-01)
      A new aquareovirus was isolated from cultured Atlantic halibut (Hippoglossus hippoglossus) fry at a facility where massive mortalities had occurred during the start-feeding phase. The same virus was also detected in juveniles ...
    • New ecosystems in the deep subsurface follow the flow of water driven by geological activity 

      Borgonie, Gaetan; Magnabosco, Cara; Garcia-Moyano, Antonio; Linage-Alvarez, Borja; Ojo, Abidemi Oluranti; Freese, Leanne Brenda; van Jaarsveld, Charl; Van Rooyen, Christelle; Kuloyo, Olukayode; Cason, Errol Duncan; Vermeulen, J.; Pienaar, C.; van Heerden, Esta; Lollar, Barbara Sherwood; Onstott, Tullis C.; Mundle, Scott O.C. (Peer reviewed; Journal article, 2019-03-01)
      Eukarya have been discovered in the deep subsurface at several locations in South Africa, but how organisms reach the subsurface remains unknown. We studied river-subsurface fissure water systems and identified Eukarya ...
    • New insights into the early mechanisms of epileptogenesis in a zebrafish model of Dravet syndrome 

      Tiraboschi, Ettore; Martina, Silvia; van der Ent, Wietske; Grzyb, Kamil; Gawel, Kinga; Cordero-Maldonado, Maria Lorena; Poovathingal, Suresh K.; Heintz, Sarah; Satheesh, Somisetty Venkata; Brattespe, Jarle; Xu, Ju; Suster, Maximiliano; Skupin, Alexander; Esguerra, Camila V. (Journal article; Peer reviewed, 2020)
      Abstract Objective: To pinpoint the earliest cellular defects underlying seizure onset (epileptogenic period) during perinatal brain development in a new zebrafish model of Dravet syndrome (DS) and to investigate potential ...
    • A new intracellular bacterium, Candidatus Similichlamydia labri sp. nov. (Chlamydiaceae) producing epitheliocysts in ballan wrasse, Labrus bergylta (Pisces, Labridae) 

      Steigen, Andreas L; Karlsbakk, Egil; Plarre, Heidrun; Watanabe, Kuninori; Øvergård, Aina-Cathrine; Brevik, Øyvind Jakobsen; Nylund, Are (Peer reviewed; Journal article, 2015-03)
      Certain wrasse species (Labridae) are used as cleaner fish in salmon farms on the Norwegian coast, reducing salmon louse intensities. The pathogen repertoire of wrasse in Norway is poorly known, and the objective of the ...
    • New methods in Palaeopalynology: Classification of pollen through pollen chemistry 

      Muthreich, Florian (Doctoral thesis, 2021-11-04)
      Pollen grains are one of the primary tools of palaeoecologists to reconstruct vegetation changes in the past. The description, counting and analysis of pollen grains (palynology) has contributed to our understanding of ...
    • A new molecular phylogeny-based taxonomy of parasitic barnacles (Crustacea: Cirripedia: Rhizocephala) 

      Høeg, Jens Thorvald; Noever, Christoph; Rees, David John; Crandall, Keith A.; Glenner, Henrik (Peer reviewed; Journal article, 2019)
      Rhizocephalans are abundant members of marine ecosystems and are important regulators of crustacean host populations. Morphological and ecological variation makes them an attractive system for evolutionary studies of ...
    • A New Ocean State After Nuclear War 

      Harrison, Cheryl S.; Rohr, Tyler; DuVivier, Alice; Maroon, Elizabeth A.; Bachman, Scott; Bardeen, Charles G.; Coupe, Joshua; Garza, Victoria; Heneghan, Ryan; Lovenduski, Nicole S.; Neubauer, Philipp; Rangel, Victor; Robock, Alan; Scherrer, Kim Josefin Niklasdotter; Stevenson, Samantha; Toon, Owen B. (Journal article; Peer reviewed, 2022)
      Nuclear war would produce dire global consequences for humans and our environment. We simulated climate impacts of US-Russia and India-Pakistan nuclear wars in an Earth System Model, here, we report on the ocean impacts. ...
    • A New Species of Osedax (Siboglinidae: Annelida) From Colonization Experiments in the Arctic Deep Sea 

      Eilertsen, Mari Heggernes; Dahlgren, Thomas Gunnar; Rapp, Hans Tore (Journal article; Peer reviewed, 2020)
      Large parcels of organic matter in the deep sea, such as whale carcasses, harbor a very specialized fauna, most famously the bone-eating worms in the genus Osedax (Annelida, Siboglinidae). Although Osedax was first described ...
    • A new way forward for ocean-climate policy as reflected in the UNFCCC Ocean and Climate Change Dialogue submissions 

      Dobush, Bobbi-Jo; Gallo, Natalya; Guerra, Melania; Guilloux, Bleuenn; Holland, Elisabeth Ann; Seabrook, Sarah; Levin, Lisa A. (Journal article; Peer reviewed, 2022)
      The ocean plays a central role in climate change mitigation and adaptation. However, climate and ocean policies have been historically siloed. After decades of slow convergence, the Ocean and Climate Change Dialogue, decided ...
    • New wine in old bottles: Modification of the Na+/K+-ATPase enzyme activity assay and its application in salmonid aquaculture 

      Takvam, Marius; Sundell, Kristina; Sundh, Henrik; Gharbi, Naouel; Kryvi, Harald; Nilsen, Tom Ole (Journal article; Peer reviewed, 2023)
      The Na+, K+ ATPase (NKA) enzyme is important to generate the transmembrane ion gradient in the gills, intestine, and kidneys, hence, is vital for secondary transport of fluids and different solutes in teleosts. Gill NKA ...
    • Next-generation field courses: Integrating Open Science and online learning 

      Geange, Sonya Rita; von Oppen, Jonathan; Strydom, Tanya; Boakye, Mickey; Gauthier, Tasha-Leigh J.; Gya, Ragnhild; Halbritter Rechsteiner, Aud Helen; Jessup, Laura H.; Middleton, Sara L.; Navarro, Jocelyn; Peirfederici, Maria Elisa; Chacón-Labella, Julia; Cotner, Sehoya Harris; Farfan-Rios, William; Maitner, Brian S.; Michaletz, Sean T.; Telford, Richard; Enquist, Brian J.; Vandvik, Vigdis (Journal article; Peer reviewed, 2021)
      As Open Science practices become more commonplace, there is a need for the next generation of scientists to be well versed in these aspects of scientific research. Yet, many training opportunities for early career researchers ...
    • Nicomache (Loxochona) lokii sp. nov. (Annelida: Polychaeta: Maldanidae) from the Loki’s Castle vent field: an important structure builder in an Arctic vent system 

      Kongsrud, Jon Anders; Rapp, Hans Tore (Peer reviewed; Journal article, 2011-07-15)
      The discovery of the Loki’s Castle vent field at 2,350 m depth on the Arctic mid-ocean ridge in 2008 represents the first known black smoker vent system in the Arctic region. Preliminary results on the benthic invertebrates ...
    • Nitrifier abundance and diversity peak at deep redox transition zones 

      Zhao, Rui; Hannisdal, Bjarte; Mogollon, Josè M.; Jørgensen, Steffen Leth (Peer reviewed; Journal article, 2019-06-14)
      More than half of the global ocean floor is draped by nutrient-starved sediments characterized by deep oxygen penetration and a prevalence of oxidized nitrogen. Despite low energy availability, this habitat hosts a vast ...
    • Nitrogen dynamics in Turbic Cryosols from Siberia and Greenland 

      Wild, Birgit; Schnecker, Jörg; Bárta, Jiří; Čapek, Petr; Guggenberger, Georg; Hofhansl, Florian; Kaiser, Christina; Lashchinsky, Nikolaj; Mikutta, Robert; Mooshammer, Maria; Šantrůčková, Hana; Shibistova, Olga; Urich, Tim; Zimov, Sergey A.; Richter, Andreas (Peer reviewed; Journal article, 2013-12)
      Turbic Cryosols (permafrost soils characterized by cryoturbation, i.e., by mixing of soil layers due to freezing and thawing) are widespread across the Arctic, and contain large amounts of poorly decomposed organic material ...
    • No environmental effect on vaccine-induced reduced growth in Atlantic salmon Salmo salar smolts 

      Fraser, Thomas; Fjelldal, Per Gunnar; Sommerset, Ingunn; Søfteland, Tina; Høstmark, Ole; Powell, Mark; Heen, Vegar; Hansen, Tom Johnny (Journal article; Peer reviewed, 2020)
      Oil-adjuvanted vaccines reduce long-term growth in farmed Atlantic salmon Salmo salar, possibly via an increase in metabolic rate due to the energetic demands of the immune system. We tested this hypothesis by comparing ...
    • No influence of oxygen levels on pathogenesis and virus shedding in Salmonid alphavirus (SAV)-challenged Atlantic salmon (Salmo salar L.) 

      Andersen, Linda; Hodneland, Kjartan; Nylund, Are (Peer reviewed; Journal article, 2010-08-21)
      Background For more than three decades, diseases caused by salmonid alphaviruses (SAV) have become a major problem of increasing economic importance in the European fish-farming industry. However, experimental infection ...
    • No room for dessert: A mechanistic model of prey selection in gut-limited predatory fish 

      Fall, Johanna; Fiksen, Øyvind (Peer reviewed; Journal article, 2020)
      Predatory fish structure communities through prey pursuit and consumption and, in many marine systems, the gadoids are particularly important. These predators have flexible feeding behaviours and often feed on large prey ...
    • Nodavirus in farmed Atlantic cod Gadus morhua in Norway 

      Patel, Sonal; Korsnes, Kjetil; Bergh, Øivind; Vik-Mo, Frode; Pedersen, Jan; Nerland, Audun Helge (Peer reviewed; Journal article, 2007-09-14)
      Viral encephalopathy and retinopathy (VER) was diagnosed in 5 to 24 g sized farmed Atlantic cod Gadus morhua kept in sea cages at Parisvatn, Hordaland county, on the west coast of Norway. Moderate mortality (10 to 15%) was ...
    • Non-conserved C-terminal regions in the histone recognition module CW, determines specificity, stability and affinity towards monomethylated histone tails 

      Ødegård, Øyvind (Master thesis, 2014-11-20)
      Histone modifications have an important role in epigenetic gene regulation and contribute to the cellular memory system. It has been well documented that certain patterns of histone modifications are associated with different ...
    • Non-visual photoreceptive systems in early development of Atlantic halibut (Hippoglossus hippoglossus) 

      Eilertsen, Mariann (Doctoral thesis, 2014-03-28)
      Non-visual photoreception is thought to be involved in a range of behavioural and physiological processes in teleost fishes, such as synchronisation of circadian and circannual rhythms, but also regulation of skin pigmentation, ...