Now showing items 597-616 of 928

    • Nanofiltration of intake water in RAS: Effect on fish performance, health and welfare 

      Ytrestøyl, Trine; Sveen, Lene; Krasnov, Aleksei; Dalum, Alf Seljenes; Kolarevic, Jelena (Research report; Forskningsrapport, 2022)
      The experiment tested the effect of nanomembrane filtration in RAS on the salmon's physiology, welfare and growth. A specially designed membrane was used to remove sulphate from seawater and to adjust salinity from 32 to 12 ‰. A RAS where salinity was adjusted to 12 ‰ by mixing raw seawater and freshwater was used as control. The fish were kept in the two systems for 10 weeks before being ...
    • Narrow lenses for capturing the complexity of fisheries: A topic analysis of fisheries science from 1990 to 2016 

      Syed, Shaheen; Borit, Melania; Spruit, Marco (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-20)
      Despite increased fisheries science output and publication outlets, the global crisis in fisheries management is as present as ever. Since a narrow research focus may be a contributing factor to this failure, this study uncovers topics in fisheries research and their trends over time. This interdisciplinary research evaluates whether science is diversifying fisheries research topics in an attempt ...
    • The Nasal Geometry of the Reindeer Gives Energy-Efficient Respiration 

      Magnanelli, Elisa; Wilhelmsen, Øivind; Acquarone, Mario; Folkow, Lars; Kjelstrup, Signe (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-14)
      Reindeer in the arctic region live under very harsh conditions and may face temperatures below 233 K. Therefore, efficient conservation of body heat and water is important for their survival. Alongside their insulating fur, the reindeer nasal mechanism for heat and mass exchange during respiration plays a fundamental role. We present a dynamic model to describe the heat and mass transport that takes ...
    • "Når det blåser i fra ØST" - Om bruken av økosystemtjeneste-perspektivet i kystsoneplanleggingen 

      Hersoug, Bjørn; Armstrong, Claire W.; Brattland, Camilla; Eythórsson, Einar; Holmgaard, Sanne Bech; Johnsen, Jahn Petter; Kvalvik, Ingrid; Mikkelsen, Eirik Inge; Paudel, Keshav Prasad; Solås, Ann-Magnhild; Sundsvold, Bente; Sørdahl, Patrick Berg; Thuestad, Alma Elizabeth (Research report; Forskningsrapport, 2019)
      Denne rapporten er et resultat av prosjektet Coreplan, som har undersøkt om metoder og tilnærminger som finnes i litteraturen om økosystemtjenester kan bidra til å styrke kystsoneforvaltningen. I rapporten diskuterer vi utviklingstrekk i norsk kystsoneplanlegging og hvordan utviklingen i bruken av kysten kan stille nye krav til kystsoneplanleggingen. Vi forklarer bakgrunnen for begrepet økosystemtjenester, ...
    • The Neglected Marine Fungi, Sensu stricto, and Their Isolation for Natural Products’ Discovery 

      Overy, David P.; Rämä, Teppo; Oosterhuis, Rylee; Walker, Allison K.; Pang, Ka-Lai (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-10)
      Despite the rapid development of molecular techniques relevant for natural product research, culture isolates remain the primary source from which natural products chemists discover and obtain new molecules from microbial sources. Techniques for obtaining and identifying microbial isolates (such as filamentous fungi) are thus of crucial importance for a successful natural products’ discovery program. ...
    • Nemo-effekten og koraller 

      Armstrong, Claire W.; Aanesen, Margrethe (Journal article; Tidsskriftartikkel, 2014-05-07)
      Bryr den norske befolkningen seg om dyphavet og de organismer som lever der selv om vi ikke har noen direkte nytte av dem? Er vi villig til å ofre økonomisk aktivitet som fiskeri og oljevirksomhet for beskytte miljøet i dyphavet? Vår studie sier ja.
    • A netting-based alternative to rigid sorting grids in the small-meshed Norway pout (Trisopterus esmarkii) trawl fishery 

      Eigaard, Ole R.; Herrmann, Bent; Feekings, Jordan; Krag, Ludvig Ahm; Sparrevohn, Claus R. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-28)
      A new bycatch reduction device, termed “Excluder”, is presented as an alternative to a traditional rigid sorting grid, mandatory in the small-meshed Norway Pout (<i>Trisopterus esmarkii</i>) trawl fishery in the North Sea. The fishery is a high-volume fishery with large vessels, large demersal trawls and catches up to 100 tons per haul of this small forage fish. The Excluder is a 30 m long netting-based ...
    • New approach for modelling size selectivity in shrimp trawl fisheries 

      Larsen, Roger B.; Herrmann, Bent; Sistiaga, Manu Berrondo; Brinkhof, Jesse; Tatone, Ivan; Langård, Lise (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-10)
      In the deep sea trawl fishery targeting shrimp (Pandalus borealis) and other cold-water shrimp species, fishers often use a Nordmöre sorting grid ahead of a small mesh codend to avoid bycatch. However, small fish can pass through the grid and are subsequently retained in the codend. This makes shrimp size selection complex and the size-dependent curve for both the shrimp and the bycatch species often ...
    • A new beardfish (Teleostei, Polymixiiformes) from the Eocene Fur Formation, Denmark 

      Schrøder, Ane Elise; Rasmussen, Jan Audun; Møller, Peter Daniel Rask; Carnevale, Giorgio (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-01)
      The earliest Eocene (Ypresian) Fur Formation (Denmark) is globally renowned for its exceptionally well-preserved fossils, including birds, sea turtles, insects, plants, andfishes. Fishes, albeit abundant and diverse, however, areonly superficially known and very few detailed, taxonomic studies have been realized to date. A new polymixiiformfish,Polyspinatusflueregen. et sp. nov., from the Fur Formation ...
    • A new deep-sea eelpout of the genus Pyrolycus (Teleostei: Zoarcidae) associated with a hydrothermal seep on the Pacific margin of Costa Rica 

      Frable, Benjamin W.; Seid, Charlotte A.; Bronson, Allison W.; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-19)
      A new species of the zoarcid genus Pyrolycus Machida & Hashimoto, 2002, Pyrolycus jaco sp. nov., is described from a hydrothermal seep environment named Jacó Scar in the eastern Pacific of Costa Rica. Four specimens were collected in 2018 between 1746–1795 m among tubeworm colonies around the seep. The new species is differentiated from its two western Pacific congeners by having a shorter head, ...
    • New Disulfide-Stabilized Fold Provides Sea Anemone Peptide to Exhibit Both Antimicrobial and TRPA1 Potentiating Properties 

      Logashina, Yulia A.; Solstad, Runar Gjerp; Mineev, Konstantin S.; Korolkova, Yuliya V.; Mosharova, Irina V.; Dyachenko, Igor A.; Palikov, Victor A.; Palikova, Yulia A.; Murashev, Arkadii N.; Arseniev, Alexander S.; Kozlov, Sergey A.; Stensvåg, Klara; Haug, Tor; Andreev, Yaroslav A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-29)
      A novel bioactive peptide named τ-AnmTx Ueq 12-1 (short name Ueq 12-1) was isolated and characterized from the sea anemone Urticina eques. Ueq 12-1 is unique among the variety of known sea anemone peptides in terms of its primary and spatial structure. It consists of 45 amino acids including 10 cysteine residues with an unusual distribution and represents a new group of sea anemone peptides. The 3D ...
    • New marine low trophic resources as food: nutritional and food safety aspects 

      Elvevoll, Edel Oddny; Eilertsen, Karl-Erik; Aschan, Michaela Maria; Bandarra, Narcissa (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      Food agencies recommend increasing the consumption of aquatic food to promote healthy living and sustainability, and, particularly, to prevent Western lifestyle-related diseases and secure sustainable food systems. This requires growth in global seafood production, and the utilization of low trophic species (LTS) is suggested. LTS are already considered nutritious and important in Asian and ...
    • A new species of the rare deep-sea genus Sciadonus Garman, 1899 (Teleostei, Bythitidae) from off Brazil, with a discussion of the evolution of troglomorphism and miniaturization in the aphyonid clade 

      de Melo, Marcelo Roberto Souto; Gomes, Amanda Alves; Møller, Peter Daniel Rask; Nielsen, Jørgen G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-16)
      A new species of the rare, deep-sea genus Sciadonus Garman, 1899 (Bythitidae) is described based on two specimens obtained by the Brazilian R/V Alpha Crucis on the continental slope off São Paulo State, Southeastern Brazil, western South Atlantic. It differs from its congeners by the combination of the following characters: body pale lacking dark pigmentation except for on female claspers; a pair ...
    • Niche separation between two dominant crustacean predators in European estuarine soft-bottom habitats 

      Siegenthaler, Andjin; Wangensteen, Owen S.; Benvenuto, Chiara; Lollobrigidi, Riccardo; Mariani, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-05)
      Epibenthic predators in estuarine shallow soft-bottom environments are generally considered to have broad ecological niches with a wide overlap. This allows them to cope with abundant but highly variable prey communities. The assessment of trophic relationships in shallow soft-bottom habitats is, however, challenging and often complicated by the bias and low resolution of the analytical tools available ...
    • Non‐specific amplification compromises environmental DNA metabarcoding with COI 

      Collins, Rupert A.; Bakker, Judith; Wangensteen Fuentes, Owen Simon; Soto, Ana Z.; Corrigan, Laura; Sims, David W.; Genner, Martin J.; Mariani, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-02)
      <ol> <li>Metabarcoding extra‐organismal DNA from environmental samples is now a key technique in aquatic biomonitoring and ecosystem health assessment. Of critical consideration when designing experiments, and especially so when developing community standards and legislative frameworks, is the choice of genetic marker and primer set. Mitochondrial cytochrome c oxidase subunit I (COI), the standard ...
    • Nordic experience of fisheries management. Seen in relation to the reform of the EU Common Fisheries Policy. 

      Holm, Petter; Eliasen, Søren; Sverdrup-Jensen, Sten; Johnsen, Jahn Petter (Research report; Forskningsrapport, 2009)
      The waters surrounding the Nordic countries are rich in fish resources. Up to this date fisheries has been among the most important productive sectors in the Nordic economies, and in the Faroe Islands and Greenland it is by far the most important sector. Management of marine fisheries has over time had various objectives in the Nordic countries, ranging from fiscal and social purposes to stock ...
    • The Nornir run-time system for parallel programs using Kahn process networks on multi-core machines – A flexible alternative to MapReduce 

      Johansen, Dag; Vrba, Zeljko; Halvorsen, Pål; Griwodz, Carsten; Beskow, Paul; Espeland, Håvard (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
    • North Atlantic Fisheries in Change. From Organic Associations to Cybernetic Organizations 

      Johnsen, Jahn Petter; Murray, Grant Daniel; Neis, Barbara (Journal article; Tidsskriftartikkel; Peer reviewed, 2009)
    • The Norwegian coastal employment system: What It Was and What It Is 

      Sønvisen, Signe Annie; Johnsen, Jahn Petter; Vik, Jostein (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Norwegian fisheries have undergone tremendous changes, due to technological developments and the introduction of resource management. In addition, societal changes and in particular the introduction of formal requirements and the formalization of training and education, have also greatly affected the fishing fleet. Jentoft and Wadel (1984) described the Coastal Employment System. This system was ...
    • Novel antimicrobial peptides EeCentrocins 1, 2 and EeStrongylocin 2 from the Edible sea urchin Echinus esculentus have 6-br-trp post-translational modifications 

      Solstad, Runar Gjerp; Li, Chun; Isaksson, Johan; Johansen, Jostein a; Svenson, Johan; Stensvåg, Klara; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-03-23)
      The global problem of microbial resistance to antibiotics has resulted in an urgent need to develop new antimicrobial agents. Natural antimicrobial peptides are considered promising candidates for drug development. Echinoderms, which rely on innate immunity factors in the defence against harmful microorganisms, are sources of novel antimicrobial peptides. This study aimed to isolate and characterise ...