Viser treff 181-200 av 931

    • Streptococcosis a Re-Emerging Disease in Aquaculture: Significance and Phytotherapy 

      Van Doan, Hien; Soltani, Mehdi; Leitão, Alexandra; Shafiei, Shafigh; Asadi, Sepideh; Lymbery, Alan J.; Ringø, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-16)
      Streptococcosis, particularly that caused by S. iniae and S. agalactiae, is a major re-emerging bacterial disease seriously affecting the global sustainability of aquaculture development. Despite a wide spread of the disease in aquaculture, few studies have been directed at assessing the in vitro antagonistic activity and in vivo efficacy of medicinal herbs and other plants against streptococcal ...
    • Ice Cod Arctogadus glacialis (Peters, 1874) in Northeast Greenland—A First Sketch of Spatial Occurrence and Abundance 

      Karamushko, Oleg V.; Lynghammar, Arve; Schou Christiansen, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-17)
      Based on bottom trawl catches during the years 2002–2017, we present the first large-scale baseline on the spatial distribution and abundance of ice cod Arctogadus glacialis (Peters, 1874) in the fjords and on the shelf in Northeast Greenland (latitudes 70 °N–78 °N). Ice cod abundance peaked in the secluded sill fjords such as Bessel Fjord, Brede Fjord, Clavering Ø fjord system and Kong Oscar Fjord ...
    • Before Virtuous Practice. Public and Private Sector-Specific Preferences for Intuition and Deliberation in Decision-Making 

      Svenson, Frithiof; Steffen, Bianca; Harteis, Christian; Launer, Markus A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-26)
      Fast and intuitive thinking, as well as emotions, play a large role in decision-making. The sociology of wise practice within public administration also suggests that thinking preferences like the use of intuition form a cornerstone of public administrators’ virtuous practice. This contribution uses conceptual and theoretical resources from behavioral sciences and public administration to find out ...
    • Synthesis and Antimicrobial Activity of Short Analogues of the Marine Antimicrobial Peptide Turgencin A: Effects of SAR Optimizations, Cys-Cys Cyclization and Lipopeptide Modifications 

      Dey, Hymonti; Simonovic, Danijela; Hagen, Ingrid Sofie Norberg-Schulz; Vasskog, Terje; Fredheim, Elizabeth G. Aarag; Blencke, Hans-Matti; Anderssen, Trude; Strøm, Morten B.; Haug, Tor (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-10)
      We have synthesised short analogues of the marine antimicrobial peptide Turgencin A from the colonial Arctic ascidian Synoicum turgens. In this study, we focused on a central, cationic 12-residue Cys-Cys loop region within the sequence. Modified (tryptophan- and arginine-enriched) linear peptides were compared with Cys-Cys cyclic derivatives, and both linear and Cys-cyclic peptides were N-terminally ...
    • Accounting for Uncertainties in Biodiversity Estimations: A New Methodology and Its Application to the Mesopelagic Sound Scattering Layer of the High Arctic 

      Herrmann, Bent; Cerbule, Kristine; Brčić, Jure; Grimaldo Vela, Eduardo Enrique; Geoffroy, Maxime; Daase, Malin; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-27)
      Measures of biological diversity (biodiversity) are important for monitoring the state of ecosystems. Several indices and methods are used to describe biodiversity from field observations. Marine faunal biodiversity is often quantified based on analysis of samples collected using a trawl during research surveys. To monitor spatial and temporal changes in biodiversity between surveys, samples are ...
    • Environment Constrains Fitness Advantages of Division of Labor in Microbial Consortia Engineered for Metabolite Push or Pull Interactions 

      Beck, Ashley E.; Pintar, Kathryn; Schepens, Diana; Schrammeck, Ashley; Johnson, Timothy; Bleem, Alissa; Du, Martin; Harcombe, William R.; Bernstein, Hans Christopher; Heys, Jeffrey J.; Gedeon, Tomas; Carlson, Ross P. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-28)
      Fitness benefits from division of labor are well documented in microbial consortia, but the dependency of the benefits on environmental context is poorly understood. Two synthetic Escherichia coli consortia were built to test the relationships between exchanged organic acid, local environment, and opportunity costs of different metabolic strategies. Opportunity costs quantify benefits not realized ...
    • Managing size selectivity: the relevance of compulsory and alternative selection devices in the Northeast Atlantic bottom trawl fishery 

      Brinkhof, Jesse; Sistiaga, Manu; Herrmann, Bent; Grimaldo Vela, Eduardo Enrique; Larsen, Roger B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-14)
      Two decades of use of the compulsory selectivity gear configuration in the Northeast Atlantic bottom trawl fishery, which consists of a rigid sorting grid followed by a diamond mesh codend, have revealed problems with performance and efficiency. Size selectivity gear alternatives to this configuration are being pursued, and recent studies of codends with shortened lastridges have reported promising ...
    • Report of the expert meeting on food safety for seaweed – Current status and future perspectives 

      Hurtado, Anicia; Concepcion, Anoushka; Duinker, Arne; Tiwari, Brijesh; Elvevoll, Edel O.; Yukawa, Goichiro; Levine, Ira A.; Banach, Jennifer L.; Sato, Junichi; Hayes, Maria; Hansen, Max; Abu-Ghannam, Nissreen; Potin, Philippe; Hogstad, Solbjørg; Holdt, Susan Løvstad; Doumiezel, Vincent; Vieira, Vitor Verdelho; Sato, Yoichi (Research report; Forskningsrapport, 2022)
      The world production of marine macroalgae, or seaweed, has more than tripled since the turn of the millennium, increasing from 10.6 million tonnes in 2000 to 32.4 million tonnes in 2018. Increased cultivation and utilization of seaweed are expected to be important pillars of sustainable food security and a robust aquatic economy in the coming years. It is important, therefore, to consider the food ...
    • Effect of Extension Piece Design on Catch Patterns in a Mediterranean Bottom Trawl Fishery 

      Petetta, Andrea; Herrmann, Bent; Virgili, Massimo; Li Veli, Daniel; Brinkhof, Jesse; Lucchetti, Alessandro (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-18)
      The catch composition of bottom trawls is commonly refined and improved through changes in codend design. Measures like reducing the number of meshes in codend circumference or turning diamond netting by 90 degrees are well known to improve the size selectivity of fish species with rounded cross-sectional shape. Based on this we speculated whether the same measures, if applied in other parts of ...
    • Radiological detection of nephrocalcinosis in farmed Atlantic salmon Salmo salar L. 

      Klykken, Christine; Dalum, Alf Seljenes; Reed, Anne Katrine; Attramadal, Kari; Olsen, Rolf Erik; Boissonnot, Lauris Jeannine Ernestine (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-14)
      Nephrocalcinosis is a common disorder in nurseries in Norway (Klykken, Reed, et al., 2022) and was reported as one of the main welfare challenges in farmed salmon by The Norwegian Fish Health Report of 2019 (Sommerset et al., 2020). Nephrocalcinosis is described as deposits of minerals within the kidneys (Bruno, 1996), that can disturb kidney function, which in turn can have dramatic consequences ...
    • Excess DHA Induces Liver Injury via Lipid Peroxidation and Gut Microbiota-Derived Lipopolysaccharide in Zebrafish 

      Ding, Qianwen; Hao, Qiang; Zhang, Qingshuang; Yang, Yalin; Olsen, Rolf Erik; Ringø, Einar; Ran, Chao; Zhang, Zhen; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-28)
      Being highly unsaturated, n-3 long-chain polyunsaturated fatty acids (LC-PUFAs) are prone to lipid peroxidation. In this study, zebrafish were fed with low-fat diet (LFD), high-fat diet (HFD), or 2% DHA-supplemented HFD (HFDHA2.0). To study the possible negative effects of the high level of dietary DHA, growth rates, blood chemistry, liver histology, hepatic oxidative stress, apoptosis, and ...
    • Dietary supplementation of exopolysaccharides from Lactobacillus rhamnosus GCC-3 improved the resistance of zebrafish against spring viremia of carp virus infection 

      Xie, Mingxu; Li, Yu; Olsen, Rolf Erik; Ringø, Einar; Yang, Yalin; Zhang, Zhen; Ran, Chao; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-05)
      Spring viremia of carp virus (SVCV) can cause high mortality of fish. The aim of this study was to investigate the effects of Lactobacillus rhamnosus GCC-3 exopolysaccharides (GCC-3 EPS) on zebrafish (Danio rerio) infected with SVCV and elucidate the underlying mechanisms. Zebrafish were fed with a control diet or diet supplemented with 0.5% and 1% of GCC-3 EPS for 2 weeks. The results showed ...
    • Buoyancy and hydrostatic balance in a West Indian Ocean coelacanth Latimeria chalumnae 

      Lauridsen, Henrik; Pedersen, Jens Mikkel Hyllested; Ringgaard, Steffen; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-08-19)
      Background: Buoyancy and balance are important parameters for slow-moving, low-metabolic, aquatic organisms. The extant coelacanths have among the lowest metabolic rates of any living vertebrate and can aford little energy to keep station. Previous observations on living coelacanths support the hypothesis that the coelacanth is neutrally buoyant and in close-to-perfect hydrostatic balance. However, ...
    • A cold-water fish striving in a warming ocean: Insights from whole-genome sequencing of the Greenland halibut in the Northwest Atlantic 

      Ferchaud, Anne-Laure; Normandeau, Eric; Babin, Charles; Præbel, Kim; Hedeholm, Rasmus; Audet, Celine; Morgan, Joanne; Walkusz, Wojciech; Sirois, Pascal; Bernatchez, Louis (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-02)
      Characterizing the extent of genetic differentiation among individuals and its distribution across the genome is increasingly important to inform both conservation and management of exploited species. The Greenland Halibut is one of the main demersal fish species to be commercially exploited in Eastern Canada, and accurate information on geographic population structure and local adaptation is required ...
    • Coproducing Sea Ice Predictions with Stakeholders Using Simulation 

      Blair, Berill; Müller, Malte; Palerme, Cyril; Blair, Rayne; Crookall, David; Knol-Kauffman, Maaike; Lamers, Machiel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-15)
      Forecasts of sea ice evolution in the Arctic region for several months ahead can be of considerable socioeconomic value for a diverse range of marine sectors and for local community supply logistics. However, subseasonal-to-seasonal (S2S) forecasts represent a significant technical challenge, and translating user needs into scientifically manageable procedures and robust user confidence requires ...
    • Dietary Succinate Impacts the Nutritional Metabolism, Protein Succinylation and Gut Microbiota of Zebrafish 

      Ding, Qianwen; Lu, Chenyao; Hao, Qiang; Zhang, Qingshuang; Yang, Yalin; Olsen, Rolf Erik; Ringø, Einar; Ran, Chao; Zhang, Zhen; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-23)
      uccinate is widely used in the food and feed industry as an acidulant, flavoring additive, and antimicrobial agent. This study investigated the effects of dietary succinate on growth, energy budget, nutritional metabolism, protein succinylation, and gut microbiota composition of zebrafish. Zebrafish were fed a control-check (0% succinate) or four succinate-supplemented diets (0.05, 0.10, 0.15, and ...
    • Nuclease-Treated Stabilized Fermentation Product of Cetobacterium somerae Improves Growth, Non-specific Immunity, and Liver Health of Zebrafish (Danio rerio) 

      Xie, Mingxu; Hao, Qiang; Xia, Rui; Olsen, Rolf Erik; Ringø, Einar; Yang, Yalin; Zhang, Zhen; Ran, Chao; Zhou, Zhigang (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-06)
      High-fat diets (HFD) are harmful to fish health. Probiotics are commonly utilized to improve fish nutrition metabolism, immune response, and health. Nucleic acids of the probiotic bacterium can be hydrolyzed by nuclease to generate nucleotides. The present study aimed to evaluate the effects of stabilized fermentation product of nucleasetreated Cetobacterium somerae XMX-1 [XMX-1 (N)] on growth, ...
    • Prediction of potential net panel selectivity in mesopelagic trawls 

      Grimaldo, Eduardo; Herrmann, Bent; Brčić, Jure; Cerbule, Kristine; Brinkhof, Jesse; Grimsmo, Leif; Jacques, Nadine (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-17)
      The growing interest in harvesting mesopelagic fish species has increased the need for knowledge about how trawls should be designed for optimizing the catch efficiency of these resources. Since the net herding efficiency for small mesopelagic fish species is unknown, trawls targeting these species need to consider the potential net panel selectivity along the entire trawl body. Therefore, trawl ...
    • Understanding the impacts of climate change for fisheries and aquaculture: applying a poverty lens 

      Kalikoski, Daniela C; Jentoft, Svein; Charles, Anthony; Salazar Herrera, Daniella; Cook, Kate; Béné, Christophe; Allison, Edward H. (Chapter; Bokkapittel, 2018)
      Key messages <ul> <li>Climate change affects communities and livelihoods in fisheries and aquaculture, and efforts to adapt to and mitigate climate change must therefore be humancentred.</li> <li>Climate adaptation strategies must emphasize the need for poverty eradication and food security, in accordance with the Paris Agreement, the United Nations 2030 Agenda for Sustainable Development and ...
    • Interesting Probiotic Bacteria Other Than the More Widely Used Lactic Acid Bacteria and Bacilli in Finfish 

      Ringø, Einar; Li, Xuemei; Doan, Hien van; Ghosh, Koushik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-02)
      Growing demands stimulate the intensification of production and create the need for practices that are both economically viable and environmentally sustainable. As European Union banned the use of antibiotics in production in 2003, several alternative treatments have been suggested, including probiotics. The first probiotic study in aquaculture was published in 1986, and since then probiotics ...