Viser treff 213-232 av 257

    • Screening for antibacterial and antifungal activities in marine benthic invertebrates from northern Norway 

      Tadesse, Margey; Gulliksen, Bjørn; Strøm, Morten B.; Styrvold, Olaf B.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-06-18)
      Benthic marine invertebrates collected from sub-Arctic regions of northern Norway, were found to be a promising source of novel bioactive compounds against human and fish pathogenic bacteria and fungi. Lyophilized material from seven species of ascidians, six sponges and one soft alcyonid coral were extracted with 60% acidified acetonitrile (ACN). After separation into an ACN-rich phase (ACN extract) ...
    • Seafood from a changing Arctic 

      Troell, Max; Eide, Arne; Isaksen, John Roald; Hermansen, Øystein; Crépin, Anne-Sophie (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-27)
      We review current knowledge about climate change impacts on Arctic seafood production. Large-scale changes in the Arctic marine food web can be expected for the next 40–100 years. Possible future trajectories under climate change for Arctic capture fisheries anticipate the movement of aquatic species into new waters and changed the dynamics of existing species. Negative consequences are ...
    • Seasonal and yearly variation of total polyphenols, total anthocyanins and ellagic acid in different clones of cloudberries (Rubus chamaemorus L.) 

      Hykkerud, Anne Linn; Uleberg, Eivind; Hansen, Espen; Vervoort, Marieke; Mølmann, Jørgen; Martinussen, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-02)
      Cloudberry (Rubus chamaemorus L.) is a wild perennial shrub growing on peatland with a circumpolar distribution. The combined berries have a high polyphenol content comprised primarily of ellagitannins. A few commercial cultivars are available, and pre-breeding trials on clonal material from different geographical origins are in progress. The objective of this study was to investigate how the content ...
    • Seasonal variability of meio- and macrobenthic standing stocks and diversity in an Arctic fjord (Adventfjorden, Spitsbergen) 

      Pawlowska, J.; Wlodarska-Kowalczuk, Maria; Zajaczkowski, Marek; Nygård, Henrik Andreas; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Strong environmental seasonality is a basic feature of the Arctic system, still there are few published records of the seasonal variability of the Arctic marine biota. This study examined the year-round seasonal changes of soft bottom macro- and meiobenthic standing stocks and diversity on a station located in an Arctic fjord (Adventfjorden, Spitsbergen). The seasonality observed in benthic biota ...
    • Second Polar Prediction Project (PPP) Societal and Economic Research and Applications (SERA) Meeting focused on end user use of weather and climate information 

      Thoman, Rick L; Dawson, Jackie; Liggett, Daniela; Lamers, Machiel; Stewart, Emma; Ljubicic, Gita; Knol, Maaike; Hoke, Winfried (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-23)
      A primary goal of the World Meteorological Organization’s Polar Prediction Project (PPP) is to advance numerical modeling, data acquisition and assimilation, ensemble forecast methods, verification, and the development of prediction products for the polar regions. However, as aptly expressed more than two decades ago, “it should be understood that forecasts have no intrinsic value. They acquire value ...
    • Sequence Analysis of the Genome of Piscine Orthoreovirus (PRV) Associated with Heart and Skeletal Muscle Inflammation (HSMI) in Atlantic Salmon (Salmo salar) 

      Markussen, Turhan; Dahle, Maria Krudtaa; Tengs, Torstein; Løvoll, Marie Therese; Finstad, Øystein Wessel; Wiik-Nielsen, Christer R.; Grove, Søren; Lauksund, Reidunn Silje; Robertsen, Børre; Rimstad, Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Piscine orthoreovirus (PRV) is associated with heart- and skeletal muscle inflammation (HSMI) of farmed Atlantic salmon (Salmo salar). We have performed detailed sequence analysis of the PRV genome with focus on putative encoded proteins, compared with prototype strains from mammalian (MRV T3D)- and avian orthoreoviruses (ARV-138), and aquareovirus (GCRV-873). Amino acid identities were low for ...
    • Sequence Analysis of the Genome of Piscine Orthoreovirus (PRV) Associated with Heart and Skeletal Muscle Inflammation (HSMI) in Atlantic Salmon (Salmo salar) 

      Markussen, Turhan; Dahle, Maria Krudtaa; Tengs, Torstein; Løvoll, Marie Therese; Finstad, Øystein Wessel; Wiik-Nielsen, Christer R.; Grove, Søren; Lauksund, Reidunn Silje; Robertsen, Børre; Rimstad, Espen (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Piscine orthoreovirus (PRV) is associated with heart- and skeletal muscle inflammation (HSMI) of farmed Atlantic salmon (Salmo salar). We have performed detailed sequence analysis of the PRV genome with focus on putative encoded proteins, compared with prototype strains from mammalian (MRV T3D)- and avian orthoreoviruses (ARV-138), and aquareovirus (GCRV-873). Amino acid identities were low for ...
    • Sequential bargaining, external effects of agreement, and public intervention 

      Aanesen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      In some bargaining situations, agreement has implications for agents beyond the parties involved, and if so, delays in reaching an agreement or failing to reach an agreement, when this would be profitable, may imply significant welfare losses. The question raised in this paper is whether the intervention of a government, who has a positive valuation of agreement and therefore offers a subsidy, will ...
    • Sequential codend improves quality of trawlcaught cod 

      Brinkhof, Jesse; Olsen, Stein Harris; Ingólfsson, Ólafur Arnar; Herrmann, Bent; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-10)
      Trawl-caught fish are frequently associated with deteriorated catch quality. This study presents a new dual sequential codend concept with the aim of improving the quality of trawl-caught fish by minimizing the frequency and severity of catch damage. During towing, the fish are retained in an anterior codend segment with the legislated mesh size. A quality improving codend segment, is attached to ...
    • Size selection of Greenland halibut (Reinhardtius hippoglossoides) in the Norwegian bottom trawl fishery with a newly developed double grid system 

      Larsen, Roger B.; Herrmann, Bent; Sistiaga, Manu Berrondo; Grimaldo, Eduardo; Brinkhof, Jesse; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      Greenland halibut (<i>Reinhardtius hippoglossoides</i>) is a commercially important species in the northeast Atlantic trawl fishery. However, direct fishing for it is not allowed and it can only be harvested as bycatch. We investigated for the first time the size selection of Greenland halibut in a newly developed double steel grid system designed for the cod and haddock bottom trawl fishery. In ...
    • Size selectivity of redfish (Sebastes spp.) in the Northeast Atlantic using grid-based selection systems for trawls 

      Herrmann, Bent; Sistiaga, Manu Berrondo; Larsen, Roger B.; Nielsen, Kåre Nolde (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Using experimental data and a model to predict size selection based on morphological data, we investigated size selection of redfish (Sebastes spp.) in the grid-based selection systems used in Northeast Atlantic trawls. We found that not all redfish make physical contact with the spacing between the bars in the sorting grids while they pass in the direction of the codend, and therefore the ...
    • Stakeholder Influence and Optimal Regulations: A Common-Agency Analysis of Ecosystem-Based Fisheries Regulations 

      Aanesen, Margrethe; Armstrong, Claire W. (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      One aspect of ecosystem-based management is to include new stakeholders. When an environmental NGO (ENGO) gets a say in the fisheries management, this will affect the authorities' optimal regulation. Combining a principal-agent model and a steady-state bioeconomic model, we show that under symmetric information the authorities will moderate their use of regulation as a response to the ENGO's increased ...
    • Strategies and hurdles using DNA vaccines to fish 

      Hølvold, Linn Benjaminsen; Myhr, Anne Ingeborg; Dalmo, Roy Ambli (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Structural and functional characterization of salmon STAT1, STAT2 and IRF9 homologs sheds light on interferon signaling in teleosts 

      Sobhkhez, Mehrdad; Skjesol, Astrid; Thomassen, Ernst Ivan; Iliev, Dimitar Borisov; Sun, Baojian; Robertsen, Børre; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      Mammalian IRF9 and STAT2, together with STAT1, form the ISGF3 transcription factor complex, which is critical for type I interferon (IFN)-induced signaling, while IFNγ stimulation is mediated by homodimeric STAT1 protein. Teleost fish are known to possess most JAK and STAT family members, however, description of their functional activity in lower vertebrates is still scarce. In the present study we ...
    • Structural and functional studies of STAT1 from Atlantic salmon (Salmo salar). 

      Skjesol, Astrid; Shi, Cheng-Yin; Hansen, Tom Egil; Thim, Hanna Leena; Jørgensen, Jorunn B (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
    • Structure-activity relationships of the antimicrobial peptide arasin 1 - and mode of action studies of the N terminal, proline-rich region 

      Paulsen, Victoria; Blencke, Hans-Matti; Benincasa, Monica; Haug, Tor; Eksteen, Jacobus Johannes; Styrvold, Olaf B.; Scocchi, Marco; Stensvåg, Klara (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Arasin 1 is a 37 amino acid long proline-rich antimicrobial peptide isolated from the spider crab, Hyas araneus. In this work the active region of arasin 1 was identified through structure-activity studies using different peptide fragments derived from the arasin 1 sequence. The pharmacophore was found to be located in the proline/arginine-rich NH2 terminus of the peptide and the fragment arasin ...
    • Stubborn fuel tax concessions: The case of fisheries in Norway 

      Isaksen, John Roald; Hermansen, Øystein; Flaaten, Ola (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-11-22)
      In the context of the abolition of traditional subsidies, this paper discusses the persistence of the major remaining subsidy scheme in Norwegian fisheries: exemption from fuel taxes. This reimbursement scheme stems from the late1980s, and has persisted since then under different governments. This paper gives the background to this support against theoretical predictions of the subsidy's effects on ...
    • Studies on the effects of LPS, ß‐glucan and metabolic inhibitors on the respiratory burst and gene expression in Atlantic salmon macrophages 

      Ulvestad, Johanne Skår; Kumari, Jaya; Seternes, Tore; Chi, Heng; Dalmo, Roy Ambli (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-30)
      Reactive oxygen species (ROS) production in macrophage‐like cells is induced as an antimicrobial defence against invading pathogens. In this study, we have explored how different stimuli and metabolic inhibitors affect the level of respiratory burst in Atlantic salmon (<i>Salmo salar</i> L.) head kidney macrophage‐like cells. Cells stimulated in vitro by bacterial lipopolysaccharide (LPS) and ß‐glucan ...
    • Synergy as strategy: learning from La Restinga, Canary Islands 

      Pascual-Fernández, José J.; De la Cruz Modino, Raquel; Chuenpagdee, Ratana; Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-29)
      In this paper, we draw attention to the role of synergies in marine conservation and community sustainability. Using marine protected areas (MPAs) as examples, we argue that MPAs that are carefully designed to fit the existing social systems can be instrumental in synergy building and fostering community development. Such synergy creation is an essential governance strategy that helps enhance ...
    • Terra nullius, Inuit Habitation and Norse Occupation with Special Emphasis on the 1933 East Greenland Case 

      Ørebech, Peter Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-05)
      Sovereignty acquired by occupation entails “recognize[d] title based on discovery,” “a reasonable period [of] … effective occupation of the region claimed to be discovered” and “the continuous and peaceful display of State authority.” Only terra nullius is subject to occupation. A territory inhabited by indigenous groups that sustain social and political organization may impede an occupying power ...