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  • Disentangling the influence of knowledge on attribute non-attendance 

    Sandorf, Erlend Dancke; Campbell, Danny; Hanley, Nick (Journal article, 2016-09-22)
    We seek to disentangle the effect of knowledge about an environmental good on respondents' propensity to ignore one or more attributes on the choice cards in a discrete choice experiment eliciting people's preferences for increased protection of cold-water corals in Norway. We hypothesize that a respondent's level of knowledge influences the degree to which she ignores attributes. Respondents ...
  • Transcriptome analyses of Atlantic salmon muscle genes induced by a DNA vaccine against salmonid alphavirus, the causative agent of salmon pancreas disease (PD) 

    Sobhkhez, Mehrdad; Krasnov, Aleksei; Robertsen, Børre (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-01)
    Salmonid alphavirus (SAV) is the causative agent of pancreas disease (PD) in farmed Atlantic salmon. A previous study showed that vaccination of pre-smolt salmon with a plasmid encoding the structural polypeptide of SAV gave protection against infection and development of PD accompanied by production of antibodies against the virus. In the present work we analyzed transcript responses in the muscle ...
  • Metabarcoding of shrimp stomach content: harnessing a natural sampler for fish biodiversity monitoring 

    Siegenthaler, Andjin; Wangensteen Fuentes, Owen Simon; Soto, Ana Z.; Benvenuto, Chiara; Corrigan, Laura; Mariani, Stefano (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-28)
    Given their positioning and biological productivity, estuaries have long represented key providers of ecosystem services, and consequently remain under remarkable pressure from numerous forms of anthropogenic impact. The monitoring of fish communities in space and time are one of the most widespread and established approaches to assess the ecological status of estuaries and other coastal habitats, ...
  • Stimulation of exosome release by extracellular DNA is conserved across multiple cell types 

    Iliev, Dimitar Borisov; Strandskog, Guro; Nepal, Arpita; Aspar, Augusta; Olsen, Randi; Jørgensen, Jorunn B; Wolfson, Deanna; Ahluwalia, Balpreet Singh; Handzhiyski, Jordan; Mironova, Roumyana (Journal article; Tidsskriftartikkel; Peer reviewed; Preprint, 2018-06-28)
    Exosomes are distinguished from other types of extracellular vesicles by their small and relatively uniform size (30-100 nm) and their composition which reflects their endo-lysosomal origin. Involvement of these extracellular organelles in intercellular communication and their implication in pathological conditions has fuelled intensive research on mammalian exosomes; however, currently, very little ...
  • Making the Arctic predictable: The changing information infrastructure of Arctic weather and sea ice services 

    Knol, Maaike; Arbo, Peter; Duske, Paula; Gerland, Sebastian; Lamers, Machiel; Pavlova, Olga; Sivle, Anders Doksæter; Tronstad, Stein (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-19)
    This paper explores the changing infrastructure around weather and sea ice information provisioning for Arctic marine areas. Traditionally, the most important providers of operational information on sea ice and weather conditions are the national sea ice and meteorological services. More recently, the community of Arctic information providers has become more heterogeneous with the establishment of ...
  • Quality aspects of fillet, loin and tail products made from live-stored feed-deprived Atlantic cod (Gadus morhua L.) at different times post mortem 

    Ageeva, Tatiana Nikolaevna; Olsen, Ragnar Ludvig; Joensen, Sjurdur; Esaiassen, Margrethe (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-18)
    During last decade, the amount of live-caught Atlantic cod stored in sea cages has increased. However, the issues of feeding regime during live-storage and time of processing after slaughter are central to provide high quality products. The goal of this study was to investigate how the quality of fresh fillet, loin and tail products can be affected by the length of feed-deprivation and the ...
  • Simulated eutrophication and browning alters zooplankton nutritional quality and determines juvenile fish growth and survival 

    Taipale, Sami Johan; Kahilainen, Kimmo Kalevi; Holtgrieve, Gordon William; Peltomaa, Elina Talvikki (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-06)
    The first few months of life is the most vulnerable period for fish and their optimal hatching time with zooplankton prey is favored by natural selection. Traditionally, however, prey abundance (i.e., zooplankton density) has been considered important, whereas prey nutritional composition has been largely neglected in natural settings. High‐quality zooplankton, rich in both essential amino acids ...
  • Reconstructing governability: How fisheries are made governable 

    Song, Andrew M.; Johnsen, Jahn Petter; Morrison, Tiffany (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-15)
    Governability is an important concept in the political and environmental social sciences with increasing application to socio‐ecological systems such as fisheries. Indeed, governability analyses of fisheries and related systems such as marine‐protected areas have generated innovative ways to implement sustainability ideals. Yet, despite progress made, we argue that there remain limitations in current ...
  • Environmental DNA illuminates the dark diversity of sharks 

    Boussarie, Germain; Bakker, Judith; Wangensteen Fuentes, Owen Simon; Mariani, Stefano; Bonnin, Lucas; Juhel, Jean-Baptiste; Kiszka, Jeremy J; Kulbicki, Michel; Manel, Stéphanie; Robbins, William D.; Vigliola, Laurent; Mouillot, David (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-02)
    In the era of “Anthropocene defaunation,” large species are often no longer detected in habitats where they formerly occurred. However, it is unclear whether this apparent missing, or “dark,” diversity of megafauna results from local species extirpations or from failure to detect elusive remaining individuals. We find that despite two orders of magnitude less sampling effort, environmental DNA (eDNA) ...
  • DNA metabarcoding of littoral hardbottom communities: high diversity and database gaps revealed by two molecular markers 

    Wangensteen Fuentes, Owen Simon; Palacín, Creu; Guardiola, Magdalena; Turon, Xavier (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-04)
    Biodiversity assessment of marine hard-bottom communities is hindered by the high diversity and size-ranges of the organisms present. We developed a DNA metabarcoding protocol for biodiversity characterization of structurally complex natural marine hard-bottom communities. We used two molecular markers: the “Leray fragment” of mitochondrial <i>cytochrome c oxidase</i> (COI), for which a novel primer ...
  • Catch Efficiency of Groundgears in a Bottom Trawl Fishery: A Case Study of the Barents Sea Haddock 

    Larsen, Roger B.; Herrmann, Bent; Brinkhof, Jesse; Grimaldo, Eduardo; Sistiaga, Manu Berrondo; Tatone, Ivan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-10)
    The catch efficiency of two types of groundgear—a conventional rockhopper and a new type of groundgear called the semicircular spreading gear (SCSG)—was investigated through experimental fishing for Haddock Melanogrammus aeglefinus conducted in the Barents Sea. A retainer bag was attached behind the footrope of the trawl, and the number of fish that were overrun by the trawl was compared with the ...
  • Predictive framework for codend size selection of brown shrimp (Crangon crangon) in the North Sea beam-trawl fishery 

    Santos, Juan; Herrmann, Bent; Stepputtis, Daniel; Gunther, Claudia; Limmer, Bente; Mieske, Bernd; Schultz, Sebastian; Neudecker, Thomas; Temming, Axel; Hufnagl, Marc; Bethke, Eckhard; Kraus, Gerd (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-16)
    The brown shrimp (<i>Crangon crangon</i>) fishery is of great socio-economic importance to coastal communities on the North Sea. The fishery is exploited by beam trawlers often using codends with very small mesh sizes, leading to concerns about catch rates of undersized shrimp. However, little information is available on codend size selection, making it difficult to provide scientifically based ...
  • When is enough, enough? Quantifying trade-offs between information quality and sampling effort for fishing gear selectivity data 

    Veiga-Malta, Tiago; Feekings, Jordan; Herrmann, Bent; Krag, Ludvig Ahm (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-21)
    There is general pressure throughout the world’s fisheries for the industry to have greater involvement not only in the development of fishing gears but also in the testing and documentation of their effect. In the European Union, the Common Fisheries Policy of 2013, together with the proposed reform of the technical measures regulation, highlights the need for greater flexibility in fisheries through ...
  • Effect of Hook and Bait Size on Catch Efficiency in the Persian Gulf Recreational Fisheries 

    Herrmann, Bent; Eighani, Morteza; Paighambari, Seyed Yousef; Feeking, Jordan (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-15)
    The effect of hook and bait sizes on the catch efficiency and size composition of Spangled Emperor <i>Lethrinus nebulosus</i>, Orange‐spotted Grouper <i>Epinephelus coioides</i>, and Narrowbarred Mackerel <i>Scomberomorus commerson</i> was investigated in the recreational and semi‐subsistence handline fishery in the Persian Gulf. Based on expectations that increasing hook and bait sizes would decrease ...
  • Molecular gut content analysis of different spider body parts 

    Macías-Hernández, Nuria; Athey, Kacie; Tonzo, Vanina; Wangensteen Fuentes, Owen Simon; Arnedo, Miquel A.; Harwood, James D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-30)
    Molecular gut-content analysis has revolutionized the study of food webs and feeding interactions, allowing the detection of prey DNA within the gut of many organisms. However, successful prey detection is a challenging procedure in which many factors affect every step, starting from the DNA extraction process. Spiders are liquid feeders with branched gut diverticula extending into their legs and ...
  • 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 ...
  • The risk of development of antimicrobial resistance with the use of coccidiostats in poultry diets. Opinion of the Panel on Animal Feed of the Norwegian Scientific Committee for Food Safety 

    Nesse, Live Lingaas; Bakke, Anne Marie; Eggen, Trine; Hoel, Kristian; Kaldhusdal, Magne; Ringø, Einar; Yazdankhah, Siamak Pour (Research report, 2015-12-14)
    Antimikrobielle midler har revolusjonert medisinen i det 20. århundre ved å gi effektiv behandling mot infeksjonssykdommer. Mikroorganismer har imidlertid evnen til å utvikle reistens mot slike stoffer. Bruk av antimikrobielle midler bidrar til utvikling av resistente stammer. Det er viktig å forsøke å hindre resistens mot antimikrobielle stoffer som vi er avhengige av for behandling av smittsomme ...
  • Risk assessment of radioactivity in Food. Opinion of the Scientific Committee of the Norwegian Scientific Committee for Food Safety, VKM report 2017:25 

    Alexander, Jan; Brantsæter, Anne Lise; Brunborg, Gunnar; Fæste, Christiane Kruse; Jaworska, Alicja; Komperød, Mari; Lillegaard, Inger Therese L.; Rosseland, Carola; Skuterud, Lavrans; Andersen, Lene Frost; Elvevoll, Edel Oddny; Hjeltnes, Brit; Hofshagen, Merete; Krogdahl, Åshild; Källqvist, Torsten; Sorteberg, Hilde-Gunn Opsahl; Rafoss, Trond; Skaar, Ida; Skåre, Janneche Utne; Steffensen, Inger-Lise; Vandvik, Vigdis; Wasteson, Yngvild; Hemre, Gro Ingunn (Research report, 2017-08-23)
    Since 1986, the management of radioactive contamination in food and feed in Norway has been driven mainly by the Chernobyl Disaster follow-up. Monitoring and countermeasures are still in place to reduce the exposure to the population. The Norwegian Food Safety Authority is in the process of revising the maximum levels (MLs) for radioactive substances in drinking water and food and establishing ...
  • Antimicrobial peptides in echinoderm host defense 

    Li, Chun; Blencke, Hans-Matti; Haug, Tor; Stensvåg, Klara (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-11-06)
    Antimicrobial peptides (AMPs) are important effector molecules in innate immunity. Here we briefly summarize characteristic traits of AMPs and their mechanisms of antimicrobial activity. Echinoderms live in a microbe-rich marine environment and are known to express a wide range of AMPs. We address two novel AMP families from coelomocytes of sea urchins: cysteine-rich AMPs (strongylocins) and ...
  • Carbon, Nitrogen and Sulphur isotopic fractionation in captive juvenile hooded seal (Cystophora cristata): application for diet analysis 

    Pinzone, Marianna; Acquarone, Mario; Huyghebaert, Loreen; Sturaro, Nicolas; Michel, Loïc N.; Siebert, Ursula; Das, Krishna (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-15)
    <p><i>Rationale</i>: Intrinsic biogeochemical markers, such as stable isotope ratios of carbon, nitrogen and sulphur, are increasingly used to trace the trophic ecology of marine top predators. However, insufficient knowledge of fractionation processes in tissues continues to hamper the use of these markers.</p> <p><i>Methods</i>: We performed a controlled feeding experiment with eight juvenile ...

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