Viser treff 81-100 av 931

    • Diversity and ecology of aphyllophoroid fungi on driftwood logs on the shores of the Baltic Sea 

      Kunttu, Panu; Pasanen, Hannes; Rämä, Teppo; Kulju, Matti; Kunttu, Sanna-Mari; Kotiranta, Heikki (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-26)
      Driftwood is woody debris that is floating on the sea or brought onto the shore by the sea. It can have a natural origin but often it originates from human activities. Driftwood has a significant ecological role as a microhabitat for a large range of species. Dead-wood-associated aphyllophoroid fungi on driftwood have been studied rather little globally, and there are hardly any studies conducted ...
    • Determination of pH in pre rigor fish muscle - method matters 

      Skjold, Vetle; Joensen, Joan Karl; Esaiassen, Margrethe; Olsen, Ragnar Ludvig (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-06)
      The determination of post mortem muscle pH are often carried out in studies on how pre-slaughter handling influences the development of rigor mortis and the quality of the fish products. The analysis might be performed by inserting a pH-electrode into the intact flesh or using a suspension containing a minced muscle sample. Although it has been known for a long time that mincing muscle tissue ...
    • Research progress on gut health of farmers teleost fish: a viewpoint concerning the intestinal mucosal barrier and the impact of its damage 

      Zhang, Hongling; Ran, Chao; Teame, Tsegay; Ding, Qianwen; Hoseinifar, Seyed Hossein; Xie, Mingxu; Zhang, Zhen; Yang, Yalin; Olsen, Rolf Erik; Gatlin, Delbert M; Ringø, Einar; Duan, Ming; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-05)
      The intestinal mucosal barrier plays a critical role in the maintenance of host health. In farmed teleost fish, the intestinal epithelium is challenged by a number of factors, leading to damage of the intestinal mucosal barrier. The pathogenesis of intestinal mucosal barrier damage in most farmed teleost fish has been associated with cell death, mainly including apoptosis, pyroptosis, necroptosis ...
    • Responding to global warming: New fisheries management measures in the Arctic 

      Jørgensen, Lis Lindal; Bakke, G.; Hoel, Alf Håkon (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09-01)
      The northernmost commercial fisheries in the world take place in the northern Barents Sea up to around 80° N. This is an area where global warming is particularly intense and where large, previously ice-covered areas are now more accessible to fishing vessels. This raised questions whether existing conservation and management measures are adequate. In this paper, we discuss the process of developing ...
    • The Image Fallacy: Rethinking the Tragedy of the Commons 

      Jentoft, Svein (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-05)
      An image is what we have in our head and what we make up in an allegory, a name, a metaphor, a text, a map or in a drawing. None of these should be confused with the thing that is being imagined. They are not the real thing, just our imaginations of it. Still, we could not do without them, for instance when governing small-scale fisheries. They make us understand what we are up to and the track we ...
    • Beyond regulatory compliance – Seafood traceability benefits and success cases 

      Borit, Melania; Olsen, Petter (Research report; Forskningsrapport, 2020)
      Since the mid-1990s, traceability has become a popular concept in industrial logistics, regardless of the production regime and type of product. Implementing traceability systems across the food supply chain is seen as crucial for increasing food quality and safety, for optimizing production or for documenting sustainability. However, implementation of traceability systems in the seafood sector seems ...
    • Co-management (samforvaltning) og andre samfunnsvitenskapelige perspektiver inn mot reguleringen av fiskeri og akvakultur 

      Johnsen, Jahn Petter (Conference object; Konferansebidrag, 2018)
      Presentasjon av institusjonelle utviklingstrekk i fiskeri- og havbruksforvaltning. Samspill mellom regulering, næringstilpasning og teknologi.
    • Implementation of integrated ecosystem assessments in the International Council for the Exploration of the Sea - Conceptualizations, practice, and progress 

      Clay, Patricia M; Ferretti, Johanna; Bailey, Jennifer L.; Goti, Leyre; Dankel, Dorothy Jane; Santurtun, Marina; Fuller, Jessica Leyla; Linke, Sebastian; Schmidt, Jörn; Nielsen, Kåre Nolde; Goldsborough, David; Groeneveld, Rolf; Fraga, Ana Rita; Elegbede, Isa; Röckmann, Christine (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-23)
      With increasing activities of multiple sectors in marine spaces, management of marine social–ecological systems requires more holistic approaches. Adopting such an approach, however, presents difficult institutional and disciplinary challenges. Here, we use the International Council for the Exploration of the Sea (ICES) as a case study on the implementation of ecosystem-based management (EBM) and ...
    • Farvel til fiskeren? Om frafall og rekruttering til fiske 

      Johnsen, Jahn Petter; Vik, Jostein; Sønvisen, Signe Annie (Chapter; Bokkapittel, 2013)
      Parallelt med tiltagende lukking av de store fiskeriene i Norge, har det skjedd en nedgang i antall fiskere, samtidig som også færre rekrutteres til fiske. Spørsmålet her er om fiskere har blitt skjøvet ut av yrket eller om de har sluttet av andre grunner? En undersøkelse blant fiskere som har sluttet, tyder på at utviklinga i andre næringer og i samfunnet har hatt innvirkning på sysselsettingssystemet ...
    • Effects of nuclease-treated fermentation product of Lactobacillus rhamnosus GCC-3 on growth, hepatic health and gut microbiota of zebrafish (Danio rerio) fed a high-fat diet 

      Xie, Mingxu; Li, Ming; Hao, Qiang; Olsen, Rolf-Erik; Ringø, Einar; Yang, Yalin; Zhang, Zhen; Ran, Chao; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-12)
      Probiotics are reported to improve the nutrition, immunity, and health of fish. Nuclease can hydrolyze nucleic acids of probiotics to produce nucleotides. The present study investigated the effect of stabilized fermentation product of nuclease-treated <i>Lactobacillus rhamnosus</i> GCC-3 (GCC-3 NT) on growth, non-specific immunity, liver health, and gut microbiota of zebrafish (<i>Danio rerio</i>). ...
    • Production of sterile Atlantic salmon by germ cell ablation with antisense oligonucleotides 

      Tveiten, Helge; Andersen, Øivind; Swain, Jaya Kumari; Johnsen, Hanne; Mommens, Maren; Slanchev, Krasimir (Journal article; Tidsskriftartikkel, 2023)
      Cultivation of sterile-only fish in aquaculture offers multiple benefits of environmental, economical, and social value. A reliable method for efficient sterilization without affecting fish welfare and performance traits would have significant impact on fish production practices. Here, we demonstrate sterilization of Atlantic salmon embryos by targeting the dead end gene with antisense oligonucleotides. ...
    • The capability of square-meshes and fixed-shape meshes to control codend size selection 

      Bak-Jensen, Zita; Santos, Juan; Melli, Valentina; Stepputtis, Daniel; Feekings, Jordan P.; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-11)
      Trawl codends are commonly made of diamond-mesh netting. However, diamond-mesh codends vary in mesh geometry along its length and during fishing due to catch build up. This introduces variability in the size selection process. This phenomenon compromises the rationality of regulating exploitation patterns in trawl fisheries through adjustments in codend mesh size. One technical solution often ...
    • Sustained year-round oceanographic measurements from Rothera Research Station, Antarctica, 1997–2017 

      Venables, Hugh; meredith, mike; Hendry, Katharine R; hoopen, Petra Ten; Peat, Helen J; Chapman, Alice; Beaumont, Jennifer; rayner, piper; Miller, Andrew; Mann, Paul; Rossetti, Helen; Massey, Alison; SOUSTER, TERRI; Reeves, Simon; Fenton, Mairi; Heiser, Sabrina; Pountney, Samuel M.; Reed, Sarah; waring, zoe; clark, Marlon; bolton, emma; Mathews, Ryan; London, Hollie; Clement, Alice; stuart, emma; aurelia, reichardt; brandon, mark; Leng, Melanie; arrowsmith, carol; annett, amber; Henley, Sian F; Clarke, Andrew (Journal article; Tidsskriftartikkel, 2023-05-10)
      Oceanographic changes adjacent to Antarctica have global climatic and ecological impacts. However, this is the most challenging place in the world to obtain marine data due to its remoteness and inhospitable nature, especially in winter. Here, we present more than 2000 Conductivity-Temperature-Depth (CTD) profiles and associated water sample data collected with (almost uniquely) full year-round ...
    • Outer Membrane Integrity-Dependent Fluorescence of the Japanese Eel UnaG Protein in Live Escherichia coli Cells 

      Richard, Celine Sarah Marine; Dey, Hymonti; Øyen, Frode Jacobsen; Maqsood, Munazza; Blencke, Hans-Matti (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-07)
      Reporter genes are important tools in many biological disciplines. The discovery of novel reporter genes is relatively rare. However, known reporter genes are constantly applied to novel applications. This study reports the performance of the bilirubin-dependent fluorescent protein UnaG from the Japanese eel Anguilla japonicas in live Escherichia coli cells in response to the disruption of outer ...
    • Effect of gillnet twine thickness on capture pattern and efficiency in the Northeast-Arctic cod (Gadus morhua) fishery 

      Brinkhof, Ilmar; Herrmann, Bent; Larsen, Roger B.; Brinkhof, Jesse; Grimaldo, Eduardo; Vollstad, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-15)
      Gillnets are among the most common fishing gears worldwide. They are often made of thin twine, which is prone to wear and tear, limiting the lifespan of the gillnet. This increases gillnet turnover, and consequently increased risk of gear discarding, gear loss, ghost fishing and marine pollution. This might be mitigated by increasing twine thickness, and thereby breaking strength. However, the ...
    • Marine Capture Fisheries from Western Indian Ocean: An Excellent Source of Proteins and Essential Amino Acids 

      Jensen, Ida-Johanne; Bodin, Nathalie; Govinden, Rodney; Elvevoll, Edel O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-27)
      The Republic of Seychelles is located in Western-Central Indian Ocean, and marine capture fisheries play a key role in the country’s economic and social life in terms of food security, employment, and cultural identity. The Seychellois are among the highest per capita fish-consuming people in the world, with a high reliance on fish for protein. However, the diet is in transition, moving towards a ...
    • The effect of temperature and dietary energy content on female maturation and egg nutritional content in Atlantic salmon 

      Maamela, Katja S.; Åsheim, Eirik Ryvoll; Debes, Paul V.; House, Andrew H.; Erkinaro, Jaakko; Liljeström, Petra; Primmer, Craig R.; Mobley, Kenyon (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-17)
      The environment experienced by a female influences reproductive traits in many species of fish. Environmental factors such as temperature and diet are not only important mediators of female maturation and reproduction but also of egg traits and offspring fitness through maternal provisioning. In this study, we use 3-year-old tank-reared Atlantic salmon from two Finnish populations to investigate the ...
    • Effect of grid section design on trawl size selectivity 

      Sistiaga, Manu; Herrmann, Bent; Brinkhof, Jesse; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-12)
      Sorting grids are introduced in trawl fisheries to improve size selectivity and reduce the variability of results obtained with sorting devices constructed of netting e.g., codends. Grids are rigid or semi-rigid structures where the bar spacing defines the sizes of fish that can pass through. However, for size selection to occur, fish need to be oriented towards the grid in specific ways, which ...
    • Microbial Community Dynamics during a Harmful Chrysochromulina leadbeateri Bloom in Northern Norway 

      Aalto, Nerea Johanna; Schweitzer, Hannah; Grann-Meyer, Erlend; Krsmanovic, Stina; Svenning, Jon Brage; Dalheim, Lars; Petters, Sebastian; Ingebrigtsen, Richard Andre; Hulatt, Christopher Jonathan; Bernstein, Hans Christopher (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-09)
      A harmful algal bloom occurred in late spring 2019 across multiple, interconnected fjords and bays in northern Norway. The event was caused by the haptophyte Chrysochromulina leadbeateri and led to severe fish mortality at several salmon aquaculture facilities. This study reports on the spatial and temporal succession dynamics of the holistic marine microbiome associated with this bloom by relating ...
    • Escape panels in trawls: does placement matter when every individual contacting the panel can escape? 

      Melli, Valentina; Herrmann, Bent; Frandsen, Rikke P.; Malta, Tiago Veiga; Feekings, Jordan P. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-12)
      Escape panels are one of the bycatch reduction devices most used in trawl fisheries but their efficiency rely on fish actively contacting the panel to escape. To investigate if contact behaviour changes at different panel placements, we tested a 300 mm square mesh panel placed in the upper panel of the codend at 3, 4 and 7 m from the codline. Seven competing models of contact probability were fitted ...