Now showing items 1-20 of 546

    • Haematology and clinical blood chemistry in harbour porpoises (Phocoena phocoena) from the inner Danish waters 

      Siebert, Ursula; Blanchet, Marie-Anne; Teilmann, Jonas; Anderson Hansen, Kirstin; Kristensen, Jakob; Bunskoek, Paulien; Dietz, Rune; Desforges, Jean-Pierre; Sonne, Christian; Desportes, Geneviève (Journal article; Tidsskriftartikkel, 2020-07-13)
      Harbour porpoises (<i>Phocoena phocoena</i>) in the Baltic Sea are under increasing pressure from anthropogenic activities, which affect the overall health of populations. Individuals’ haematologic and biochemistry parameters are known to be linked to a population’s health status and are therefore useful tools for cross-population comparisons and to assess health patterns of a population through ...
    • Administration of watermelon rind powder to Nile tilapia (Oreochromis niloticus) culture under biofloc system: Effect on growth performance, innate immune response, and disease resistance 

      Doan, Hien Van; Lumsangkul, Chompunut; Hoseinifar, Seyed Hossein; Hung, Tran Quang; Stejskal, Vlastimil; Ringø, Einar; Dawood, Mahmoud A.O.; Esteban, Maria Ángeles (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-07)
      An eight-week experiment was performed to assess the effectiveness of watermelon rind powder (WMRP) on growth efficiency, immunity, and disease resistance of Nile tilapia, <i>O. niloticus</i>. Three hundred fish (17.14 ± 0.12 g) were fed five diets; 0 (Diet 1- control), 20 g kg<sup>−1</sup> WMRP (Diet 2), 40 g kg<sup>−1</sup> WMRP (Diet 3), 80 g kg<sup>−1</sup> WMRP (Diet 4), and 160 g kg<sup>−1</sup> ...
    • Thee level of eicosapentaenoic (EPA),but not docosahexaenoic acid (DHA) is related to formulation and concentration of EPA and DHA in feed 

      Seternes, Tore; Johansson, Gunhild S.; Evje, Iselin; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-22)
      The present study investigated how the concentration of PUFA in blood and muscle of Atlantic salmon (<i>Salmo salar</i> L.) changed when fed 4 diets containing very different amounts of LC-PUFA in fresh water for 84 days. The n-3 LC-PUFA constituted 4.4, 24.2, 18.4, and 51.5% of the total fatty acids in the diets made with rapeseed oil, anchoveta oil, a combination of rapeseed oil (60%) and anchoveta ...
    • Salmonid Alphavirus Subtype 3 Induces Prolonged Local B Cell Responses in Atlantic Salmon (Salmo salar) After Intraperitoneal Infection 

      Jenberie, Shiferaw; Penaranda, Ma Michelle Demogina; Thim, Hanna Leena; Styrvold, Morten Bay; Strandskog, Guro; Jørgensen, Jorunn B; Jensen, Ingvill (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-10)
      B cell responses are a crucial part of the adaptive immune response to viral infection. Infection by salmonid alphavirus subtype 3 (SAV3) causes pancreas disease (PD) in Atlantic salmon (<i>Salmo salar</i>) and is a serious concern to the aquaculture industry. In this study, we have used intraperitoneal (IP) infection with SAV3 as a model to characterize local B cell responses in the peritoneal ...
    • Seafloor deposition of water-based drill cuttings generates distinctive and lengthy sediment bacterial community changes 

      Nguyen, Tan Thi; Paulsen, John E.; Landfald, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-27)
      The spatial extent and persistence of bacterial change caused by deposition of water-based drill cuttings on the seafloor were explored by a community-wide approach. Ten centimeter sediment cores were sampled along transects extending from ≤15 m to 250 m from three nearby drilling sites in the southern Barents Sea. Eight months, 8 years and 15 years, respectively, had passed since the completion of ...
    • Fine-Tuning Climate Resilience in Marine Socio-Ecological Systems: The Need for Accurate Space-Time Representativeness to Identify Relevant Consequences and Responses 

      Saldívar-Lucio, Romeo; Trasviña-Castro, Armando; Jiddawi, Narriman; Chuenpagdee, Ratana; Lindström, Lars; Jentoft, Svein; Fraga, Julia; de la Torre-Castro, Maricela (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-18)
      Climate change triggers a wide mosaic of regional and local responses, often different to the large-scale variability in magnitude and direction. Because of the psychological connections (cognitive and emotional) with the frequency, intensity and age of a climatic event, people may have the capacity to recognize key variations at lower scales, especially those from which they perceive risk. Yet, the ...
    • Economic performance and capacity utilisation in vietnamese purse seine fishery 

      Nga, Cao Thi Hong; Eide, Arne; Armstrong, Claire W.; Long, Le Kim (Journal article; Tidsskriftartikkel; Peer reviewed, 2020)
      This study identifies differences in vessel efficiency amongst purse seiners in Vietnamese fishery. Deterministic data envelopment analysis (DEA) was used to assess relative capacity utilisation of each vessel, and double bootstrap DEA was adopted to overcome some of the drawbacks of nonparametric DEA. The study was based on a survey of costs and earnings from 52 purse seiners in 2016, revealing ...
    • Temperature-dependent lipid accumulation in the polar marine microalga Chlamydomonas malina RCC2488 

      Morales-Sanchez, Daniela; Schulze, Peter Simon Claus; Kiron, Viswanath; Wijffels, Rene Hubertus (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-23)
      The exploration of cold-adapted microalgae offers a wide range of biotechnological applications that can be used for human, animal, and environmental benefits in colder climates. Previously, when the polar marine microalga <i>Chlamydomonas malina</i> RCC2488 was cultivated under both nitrogen replete and depleted conditions at 8°C, it accumulated lipids and carbohydrates (up to 32 and 49%, respectively), ...
    • More Than Expected From Old Sponge Samples: A Natural Sampler DNA Metabarcoding Assessment of Marine Fish Diversity in Nha Trang Bay (Vietnam) 

      Turon, Marta; Angulo-Preckler, Carlos; Antich, Adrià; Præbel, Kim; Wangensteen, Owen S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-09)
      Sponges have recently been proposed as ideal candidates to act as natural samplers for environmental DNA due to their efficiency in filtering water. However, validation of the usefulness of DNA recovered from sponges to reveal vertebrate biodiversity patterns in Marine Protected Areas is still needed. Additionally, nothing is known about how different sponge species and morphologies influence the ...
    • Fatty Acid Composition of the Lipids from Atlantic Salmon—Comparison of Two Extraction Methods without Halogenated Solvents 

      Nechev, Jordan; Edvinsen, Guro Kristine; Eilertsen, Karl-Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-01)
      The scope of this paper was to apply two recently developed methods for lipid extraction: the methyl tert-butyl ether (MTBE) method and the BUME method. These two methods do not include halogenated solvents, which makes them less hazardous to the environment, less toxic, and needed in less volume compared to the standard methods for lipid extraction. Fatty acid composition of the lipids from Atlantic ...
    • An Update on the Content of Fatty Acids, Dioxins, PCBs and Heavy Metals in Farmed, Escaped and Wild Atlantic Salmon (Salmo salar L.) in Norway 

      Jensen, Ida-Johanne; Eilertsen, Karl-Erik; Otnæs, Carina Helen Almli; Mæhre, Hanne K; Elvevoll, Edel O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-19)
      In this paper, we present updated data on proximate composition, amino acid, and fatty acid composition, as well as concentrations of dioxins, polychlorinated biphenyls (PCBs), and selected heavy metals, in fillets from farmed (n = 20), escaped (n = 17), and wild (n = 23) Atlantic salmon (<i>Salmo salar</i> L.). The concentrations of dioxins (0.53 ± 0.12 pg toxic equivalents (TEQ)/g), dioxin-like ...
    • Governance implications for the implementation of biodegradable gillnets in Norway 

      Standal, Dag; Grimaldo, Eduardo; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-15)
      Gillnets are among the most widely used fishing gear in global fisheries because of their simplicity, high operability, catch efficiency and low entrance cost for fishermen. In Norway, the Northeast Atlantic (NEA) cod (<i>Gadus morhua</i>) fishing industry represents the most important economic single species fishery and the gillnet fishery accounts for 24% of the national total allowable catch (TAC) ...
    • Lipid yield from the diatom Porosira glacialis is determined by solvent choice and number of extractions, independent of cell disruption 

      Svenning, Jon Brage; Dalheim, Lars; Vasskog, Terje; Vang, Birthe; Matricon, Lucie; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-17)
      Cell wall disruption is necessary to maximize lipid extraction yields in conventional species of mass-cultivated microalgae. This study investigated the effect of sonication, solvent choice and number of extractions on the lipid yield, lipid class composition and fatty acid composition of the diatom <i>Porosira glacialis</i>. For comparison, the diatom <i>Odontella aurita</i> and green alga <i>Chlorella ...
    • Shared waters—shared problems: The role of self-governance in managing common pool resources. 

      Osmundsen, Tonje Cecilie; Karlsen, Kine Mari; Robertsen, Roy; Hersoug, Bjørn (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-07)
      Seafood production governance, primarily and traditionally a governmental activity, is increasingly designed and performed by private actors, such as business organizations and/or Non-Governmental Organization. This is often seen as complementary to public regulation in handling collective problems, but there are few studies within the aquaculture sector which investigate the extent and potential ...
    • The Well – Mixing skirt and freshwater lens concepts with smart-lighting and -feeding to enhance lice prevention and safeguard fish welfare 

      Wright, Daniel William; Stien, Lars Helge; Oppedal, Frode; Sievers, Michael; Ditria, Ellen; Trengereid, Henrik (Research report; Forskningsrapport, 2019)
      A commercial scale sea-cage design, combining skirt and freshwater lens concepts with smart lighting and feeding for improved lice prevention and fish welfare, was trialed. Environment, lice levels and fish welfare were assessed. In addition, acoustic tags and echo sounders were used to track fish behaviour. An associated laboratory trial on brackish water salinity effects on host-attached salmon ...
    • Arctic Marine Data Collection Using Oceanic Gliders: Providing Ecological Context to Cetacean Vocalizations 

      Aniceto, Ana Sofia; Pedersen, Geir; Primicerio, Raul; Biuw, Martin; Lindstrøm, Ulf (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-16)
      To achieve effective management and understanding of risks associated with increasing anthropogenic pressures in the ocean, it is essential to successfully and efficiently collect data with high spatio–temporal resolution and coverage. Autonomous Underwater Vehicles (AUVs) are an example of technological advances with potential to provide improved information on ocean processes. We demonstrate the ...
    • The melting snowball effect: A heuristic for sustainable Arctic governance under climate change 

      Dankel, Dorothy Jane; Tiller, Rachel; Koelma, Elske; Lam, Vicky W.Y.; Liu, Yajie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-08)
      Climate change in the Arctic is occurring at a rapid rate. In Longyearbyen, Svalbard, the world’s northernmost city, deadly avalanches and permafrost thaw-induced architectural destruction has disrupted local governance norms and responsibilities. In the North Atlantic, the warming ocean temperatures have contributed to a rapid expansion of the mackerel stock which has spurred both geo-political ...
    • Obesity-induced alterations in the gut microbiome in female mice fed a high-fat diet are antagonized by dietary supplementation with a novel, wax ester–rich, marine oil 

      Schots, Pauke C.; Jansen, Kirsten Maria; Mrazek, Jakub; Pedersen, Alice Marie; Olsen, Ragnar Ludvig; Larsen, Terje Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-09)
      Dietary supplementation with calanus oil, a novel wax ester–rich marine oil, has been shown to reduce adiposity in high-fat diet (HFD)–induced obese mice. Current evidence suggests that obesity and its comorbidities are intrinsically linked with unfavorable changes in the intestinal microbiome. Thus, in line with its antiobesity effect, we hypothesized that dietary supplementation with calanus oil ...
    • Biota miljøprøvetaking i 2018 i vannforekomsten Finnfjord Indre 

      Aalto, Nerea Johanna (Research report; Forskningsrapport, 2019)
      I henhold til brev fra Miljødirektoratet datert 10.10.2017; Vedtak om fastsettelse av intervall for vannovervåking, (av Finnfjord Indre) ble det tatt nye prøver i 2018. Hovedfokuset var på biota (blåskjell), men det ble også tatt sedimentprøver. Det ble benyttet en ROVundervannsdrone for å finne blåskjell, men det ble ikke funnet noen på bunnen ved de planlagte prøvetakingsstasjonene eller nær ...
    • Intracellular distribution and transcriptional regulation of Atlantic salmon (Salmo salar) Rab5c, 7a and 27a homologs by immune stimuli 

      Nepal, Arpita; Wolfson, Deanna; Ahluwalia, Balpreet Singh; Jensen, Ingvill; Jørgensen, Jorunn B; Iliev, Dimitar Borisov (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-31)
      Rab GTPases control trafficking of intracellular vesicles and are key regulators of endocytic and secretory pathways. Due to their specific distribution, they may serve as markers for different endolysosomal compartments. Since Rab GTPases are involved in uptake and trafficking of endocytosed ligands and cell receptors, as well as secretion of immune mediators, they have been implicated in diverse ...