Viser treff 661-680 av 1579

    • Systems biology – Current status and challenges 

      Zupanic, Anze; Bernstein, Hans Christopher; Heiland, Ines (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-13)
      We put together a special issue on current approaches in systems biology with a focus on mathematical modeling of metabolic networks. Mathematical models have increasingly been used to unravel molecular mechanisms of complex dynamic biological processes. We here provide a short introduction into the topics covered in this special issue, highlighting current developments and challenges.
    • Description of the processes in the value chain and risk assessment of decomposition substances and oxidation products in fish Oils. Opinion of Steering Committee of the Norwegian Scientific Committee for Food Safety 

      Aursand, Marit; Hamre, Kristin; Knutsen, Helle Katrine; Maage, Amund; Arukwe, Augustine; Alexander, Jan; Amlund, Heidi; Bernhoft, Aksel; Brantsæter, Anne Lise; Eriksen, Gunnar Sundstøl; Fæste, Christiane Kruse; Krogdahl, Åshild; Haugen, Margaretha; Hemre, Gro Ingunn; Lassen, Jørgen Fr; Nerland, Audun Helge; Nesse, Live Lingaas; Næss, Bjørn; Ringø, Einar; Ruus, Anders; Skåre, Janneche Utne; Steffensen, Inger-Lise; Sundheim, Leif; Sverdrup, Line Emilie; Svihus, Birger; Thomsen, Cathrine; Torrissen, Ole; Østerås, Olav; Torstensen, Bente Elisabeth; Ørnsrud, Robin; Mozuraityte, Revilija (Research report; Forskningsrapport, 2011-10-19)
      The Norwegian Scientific Committee for Food Safety (VKM) has been asked by the Norwegian Food Safety Authority to perform a health risk assessment on decomposition substances and oxidation products in fish oils intended for human consumption except pharmaceuticals. Seal and/or krill oil intended for human consumption might be included but in separate chapters. EU’s hygiene regulations for the ...
    • Enjoying the warming Mediterranean: Transcriptomic responses to temperature changes of a thermophilous keystone species in benthic communities 

      Pérez-Portela, Rocío; Riesgo, Ana; Wangensteen Fuentes, Owen Simon; Palacín, Creu; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-29)
      Information about the genomic processes underlying responses to temperature changes is still limited in non-model marine invertebrates. In this sense, transcriptomic analyses can help to identify genes potentially related to thermal responses. We here investigated, via RNA-seq, whole-transcriptomic responses to increased and decreased temperatures in a thermophilous keystone sea urchin, <i>Arbacia ...
    • Genotyping of Salmon Gill Poxvirus Reveals One Main Predominant Lineage in Europe, Featuring Fjord- and Fish Farm-Specific Sub-Lineages 

      Gulla, Snorre; Tengs, Torstein; Mohammad, Saima; Gjessing, Mona Cecilie; Garseth, Åse Helen; Sveinsson, Karoline Overn; Moldal, Torfinn; Petersen, Petra; Tørud, Brit; Dale, Ole Bendik; Dahle, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-29)
      Salmon gill poxvirus (SGPV) can cause serious gill disease in Atlantic salmon (<i>Salmo salar</i> L.) and represents a significant problem to aquaculture industries in Northern Europe. Here, a single-tube multi-locus variable-number tandem-repeat (VNTR) analysis (MLVA) genotyping assay, targeting eight VNTR loci, was developed for studying the epizootiology of SGPV. Through MLVA typing of SGPV ...
    • Development of Commercial Aquaculture and the Role of Policies. A case study on the development of aquaculture as a tool for poverty reduction and food security in Kenya 

      Fosso, Yvonne Wanjiru (Master thesis; Mastergradsoppgave, 2015-08-17)
      In Kenya, there is a growing demand for fish food, due to rapid population growth and dwindling fisheries. Aquaculture has been revived, and is now the fastest growing food-producing sector in the country. However, this development has happened in an unprecedented speed whereas the issue with sustainability emerges. The main driver for this growth is by government intervention, heavily involved in ...
    • Novel feeding interactions amplify the impact of species redistribution on an Arctic food web 

      Pecuchet, Laurene; Blanchet, Marie-Anne; Frainer, Andre barbosa; Husson, Bérengère; Jørgensen, Lis Lindal; Kortsch, Susanne; Primicerio, Raul (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-01)
      Species are redistributing globally in response to climate warming, impacting ecosystem functions and services. In the Barents Sea, poleward expansion of boreal species and a decreased abundance of Arctic species are causing a rapid borealization of the Arctic communities. This borealization might have profound consequences on the Arctic food web by creating novel feeding interactions between ...
    • GoDental! Enhancing flipped classroom experience with game‐based learning 

      Borit, Melania; Stangvaltaite-Mouhat, Lina (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-10)
      <i>Aim</i> - To investigate the use of game‐based learning (GBL) to enhance students’ experience of the flipped classroom (FC) in dental education.<p> <p><i>Materials and Methods</i> - Students participated in three sessions organised as FC, implemented either as conventional FC or FC augmented with the GoDental! game. In the pre‐class phase, sessions 1 and 2 were organised as instructor‐made ...
    • Microplastics in fish and shellfish - A threat to seafood safety? 

      Garrido Gamarro, Esther; Ryder, John; Elvevoll, Edel O.; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-03-23)
      Plastic litter in the oceans is a major environmental problem, and small size plastics (microplastics) have been detected in many species of fish and shellfish consumed by humans. The purpose of this paper is to evaluate the knowledge on microplastics in fish and shellfish in relation to a possible threat to seafood safety. In fish and crustacean species, the presence of microplastics has in most ...
    • 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 ...
    • Measured sound levels in ice-covered shallow water caused by seismic shooting on top of and below floating ice, reviewed for possible impacts on true seals 

      Stemland, Helene Meling; Johansen, Tor Arne; Ruud, Bent Ole; Aniceto, Ana Sofia (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-01)
      Seismic surveying of the Arctic is important for several reasons, but also introduces some challenges. One is the concern that seismic data may affect the hearing of marine mammals living there, including true seals. We performed two seismic experiments on floating ice on Svalbard in the Norwegian Arctic in early March 2016 and late May 2017, just before and right after the ringed seal breeding ...
    • Does the efficiency of a counter-herding device depend on seabed contact? 

      Melli, Valentina; Krag, Ludvig Ahm; Herrmann, Bent; Karlsen, Junita Diana; Feekings, Jordan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-06)
      To prevent unwanted fish bycatch from entering the trawl, we modified a counter-herding device, FLEXSELECT, developed for a Northeast Atlantic <i>Nephrops</i> (<i>Nephrops norvegicus</i>) trawl fishery. FLEXSELECT, which was designed to direct fish away from the trawl by means of sweeping ropes in the herding area, has been shown to be highly effective on both roundfish and flatfish species. However, ...
    • “And if you gaze long into an abyss, the abyss gazes also into thee ”: four morphs of Arctic charr adapting to a depth gradient in Lake Tinnsjøen 

      Østbye, Kjartan; Hassve, Marius Hagen; Tamayo, Ana-Maria Peris; Hagenlund, Mari; Vogler, Thomas; Præbel, Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-24)
      The origin of species is a central topic in biology. Ecological speciation might be a driver in adaptive radiation, providing a framework for understanding mechanisms, level, and rate of diversification. The Arctic charr <i>Salvelinus alpinus</i> L. is a polymorphic species with huge morphological and life‐history diversity in Holarctic water systems. We studied adaptive radiation of Arctic charr ...
    • Transforming the governance of small-scale fisheries 

      Chuenpagdee, Ratana; Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-16)
      Despite their contribution to employment, food security, poverty eradication, and community well-being, small-scale fisheries often find themselves in a disadvantageous position globally relative to large-scale fisheries and other industries competing for marine space, resources, and government attention. By and large, small-scale fisheries are marginalized in every sense of the word: culturally, ...
    • Possible Health Effects of a Wax Ester Rich Marine Oil 

      Schots, Pauke C.; Pedersen, Alice Marie; Eilertsen, Karl-Erik; Olsen, Ragnar Ludvig; Larsen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-26)
      The consumption of seafood and the use of fish oil for the production of nutraceuticals and fish feed have increased over the past decades due the high content of long-chain polyunsaturated omega-3 fatty acids. This increase has put pressure on the sustainability of fisheries. One way to overcome the limited supply of fish oil is to harvest lower in the marine food web. <i>Calanus finmarchicus</i>, ...
    • Arealforvaltning av norsk havbruksnæring. Vurdering av scenarioer i «Havbruksforvaltning 2030» 

      Hersoug, Bjørn; Mikkelsen, Eirik Inge; Robertsen, Roy; Osmundsen, Tonje Cecilie (Research report; Forskningsrapport, 2020-03-13)
      Rapporten er en helhetlig vurdering av mulige grep innen arealforvaltning (arealplanlegging og lokalitetsforvaltning) av havbruk og marine områder for å gjøre areal tilgjengelig for vekst i havbruksnæringen, samtidig som også andre hensyn sikres, og at forvaltningen er tids- og kostnadseffektiv. Hvordan tilgangen på egnede arealer vil bli for næringen fram mot 2030 og videre, vil avhenge av flere ...
    • Quantification of gear inflicted damages on trawl-caught haddock in the Northeast Atlantic fishery 

      Sistiaga, Manu; Herrmann, Bent; Brinkhof, Jesse; Larsen, Roger B.; Jacques, Nadine; Santos, Juan; Gjøsund, Svein Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-12)
      External damages are indicators of the overall quality of fish and fish welfare. Haddock is an important commercial species widespread in the North Atlantic, but few studies related to quality have been carried out on this species. We studied the levels of external damages on haddock captured with a demersal trawl in the Northeast Atlantic. Further, we investigated to what extent the compulsory ...
    • Approaching the Arctic: the occurrence of Parin’s spinyfin Diretmichthys parini (Beryciformes: Diretmidae) in the Nordic Seas 

      Lynghammar, Arve; Byrkjedal, Ingvar; Bugjerde, Berit Margrete; Wienerroither, Rupert (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-03)
      Two adult specimens of the tropical to subtropical fish species <i>Diretmichthys parini</i> are reported from the North Sea and the northern Norwegian Sea, respectively. Both were accidentally caught as bycatch by commercial trawlers. Although not uncommon in Icelandic waters, it has not been documented from the Nordic Seas previously. In light of the major currents and water temperatures in the ...
    • Overexpression of T-bet, GATA-3 and TGF-ß induces IFN-γ, IL-4/13A, and IL-17A expression in Atlantic salmon 

      Slettjord, Tiril Hoffstrøm; Sekkenes, Hege J.; Chi, Heng; Bøgwald, Jarl; Swain, Trilochan; Dalmo, Roy Ambli; Swain, Jaya Kumari (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-20)
      The overexpression of <i>GATA-3, T-bet</i> and <i>TGF-ß</i> may theoretically induce <i>IL-4/A, IFN-γ</i> and <i>IL-17A</i> expression, respectively. Whether this also applies to fish is not yet known. The plasmid vectors encoding reporter gene (RFP)-tagged <i>T-bet, GATA-3</i> and <i>TGF-ß</i> were used as overexpression tools, transfected into cells or injected intramuscularly to monitor the ...
    • Promoting 21st Century Skills with Game-Based Learning in Interdisciplinary Fisheries Education 

      Weines, Jørn (Journal article; Tidsskriftartikkel, 2019-10)
      This conference paper presents the case of using a combination premade serious games and self-designed games at bachelor and master’s programs at the Norwegian College of Fisheries Science to facilitate the integration of different disciplines and the development of practical skillsets that are necessary for success in the seafood industry after graduation. Furthermore, it explores the preliminary ...
    • First record of experimentally induced salmon gill poxvirus disease (SGPVD) in Atlantic salmon (Salmo salar L.) 

      Thoen, Even; Tartor, Haitham; Amundsen, Marit; Dale, Ole Bendik; Sveinsson, Karoline Overn; Rønning, Hans Petter; Grønneberg, Estelle; Dahle, Maria; Gjessing, Mona Cecilie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-07)
      Salmon gill poxvirus (SGPV) infection is a common denominator in many cases of complex gill disease in the Norwegian salmon farming industry and may, as a single agent infection, result in salmon poxvirus disease (SGPVD). Experiences from the field suggest that stress may be a decisive factor for the induction of SGPVD. Here we investigated the effect of stress hormone treatment on SGPV kinetics and ...