Viser treff 21-40 av 929

    • Anti-microbial activity and immunomodulation of recombinant hepcidin 2 and NK-lysin from flounder (Paralichthys olivaceus) 

      Li, Xinyu; Chi, Heng; Dalmo, Roy Ambli; Tang, Xiaoqian; Xing, Jing; Sheng, Xiuzhen; Zhan, Wenbin (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-21)
      Infections due to pathogens impact global aquaculture economy, where diseases caused by bacteria should be in particular focus due to antibiotic resistance. Hepcidin and NK-lysin are important innate immune factors having potential to be exploited as alternatives to antibiotics due to their antimicrobial activity and immunomodulatory capacity. In this study, the recombinant proteins of hepcidin 2 ...
    • Growth strategies of Chlorella vulgaris in seawater for a high production of biomass and lipids suitable for biodiesel 

      Rautenberger, Ralf; Detain, Alexandre; Skjånes, Kari; Schulze, Peter Simon Claus; Kiron, Viswanath; Morales Sanchez, Daniela (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-09)
      Chlorella vulgaris is a freshwater microalga that synthesises large amounts of saturated lipids, which makes it suitable for production of bioenergy and biofuels. Since its cultivation usually requires freshwater, it competes with agriculture, economic development and ecological conservation for this limited natural resource. This study investigated the possibility of the partial replacement of ...
    • Revealing the Host-Dependent Nature of an Engineered Genetic Inverter in Concordance with Physiology 

      Chan, Dennis Tin Chat; Bernstein, Hans Christopher; Baldwin, Geoff S. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-16)
      Broad-host-range synthetic biology is an emerging frontier that aims to expand our current engineerable domain of microbial hosts for biodesign applications. As more novel species are brought to “model status,” synthetic biologists are discovering that identically engineered genetic circuits can exhibit different performances depending on the organism it operates within, an observation referred ...
    • Does soak time influence the effect of artificial light on catch efficiency in snow crab (Chionoecetes opilio) pot fishery? 

      Cerbule, Kristine; Herrmann, Bent; Grimaldo, Eduardo; Grimsmo, Leif; Karlsen, Junita D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-09)
      In the Barents Sea commercial snow crab (Chionoecetes opilio) fishery, an increase in catch efficiency of the conical pots is important for the profitability of the industry. Light emitting diodes (LEDs) have previously been tested for increasing catch efficiency of the snow crab pots. These earlier experiments have shown varying results ranging from large increase in snow crab catches to no ...
    • Kvalitetsutfordringer på stor snurrevadtorsk - årsaker og mulige tiltak 

      Tobiassen, Torbjørn Inge; Joensen, Sjúrður; Kristoffersen, Silje; Martinsen, Gustav; Hansen, Kristin Beate; Olsen, Stein Harris; Esaiassen, Margrethe (Research report; Forskningsrapport, 2024-01-22)
      Stor snurrevadfanget fisk har andre typer skader enn fisk som er fanget med andre redskap, eksempelvis garn. Målsettingen med arbeidet som presenteres her var å kartlegge type og omfanget av skader på stor snurrevadfanget torsk, samt finne årsakene til slike skader. Det synes å bli flere innvendige skader på snurrevadfanget fisk, slik som knekt rygg og bloduttredelser nær svømmeblæra. Disse ...
    • How to conduct more systematic reviews of agent-based models and foster theory development - Taking stock and looking ahead 

      Achter, Sebastian; Borit, Melania; Cottineau, Clémentine; Polhill, J. Gareth; Radchuk, Viktoriia; Meyer, Matthias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-15)
      Agent-based models (ABMs) are increasingly utilized in ecology and related fields, yet concerns persist regarding the lack of consideration for lessons learned from previous models. This study explores the potential of systematically conducted ABM reviews to contribute to cumulative science and theory development by synthesizing individual ABM findings more effectively. We are conducting a meta-review ...
    • Fungi and Actinobacteria: Alternative Probiotics for Sustainable Aquaculture 

      Ghosh, Koushik; Harikrishnan, Ramasamy; Mukhopadhyay, Abhisek; Ringø, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-25)
      Aquatic animals are continually being exposed to stressors under farming conditions, increasing risks to gut health that result in dysbiosis. Since restrictions are imposed on the frequent use of antibiotics in aquaculture, there is emerging demand for economically viable, environmentally safe, and sustainable alternatives for the intensive production of aquaculture species. The application ...
    • Improving the size selectivity and exploitation pattern of cocktail shrimp (Trachypenaeus curvirostris) in shrimp trawl fishery of the South China Sea 

      Yang, Bingzhong; Herrmann, Bent; Wan, Rong (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-13)
      In order to improve the size selectivity and exploitation pattern for cocktail shrimp (Trachypenaeus curvirostris) in shrimp trawl fishery of the South China Sea (SCS), selective properties of four codends were tested and compared. These experimental codends involved two mesh sizes, 30 and 35 mm, and two mesh shapes, diamond-mesh (T0) and diamond-mesh turned by 90 degree (T90), respectively. Our ...
    • Mucosal and systemic physiological changes underscore the welfare risks of environmental hydrogen sulphide in post-smolt Atlantic salmon (Salmo salar) 

      Lazado, Carlo C.; Stiller, Kevin Torben; Timmerhaus, Gerrit; Reiten, Britt Kristin Megård; Nicolaysen, Ilona Lorraine; Carletto, Danilo; Alipio, Hanna Ross De Dios; Hansen-Bergstedt, Julie; Andersen, Øivind (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-01-04)
      Atlantic salmon (Salmo salar) might encounter toxic hydrogen sulphide (H<sub>2</sub>S) gas during aquaculture production. Exposure to this gas can be acute or chronic, with heightened levels often linked to significant mortality rates. Despite its recognised toxicity, our understanding of the physiological implications of H<sub>2</sub>S on salmon remains limited. This report details the mucosal and ...
    • Environmental impacts of aquaculture and coexcisting industries 

      Evenset, Anita; Refseth, Gro Harlaug; Dale, Trine; Arnberg, Maj; Harendza, Astrid; Mikkelsen, Eirik Inge; Iversen, Audun; Sagerup, Kjetil; Striberny, Anja; Izquierdo-Gomez, David; Borgersen, Gunhild; Bjorbækmo, Marit Frederikke Markussen; Pedersen, Kristine Bondo; Eriksen, Katrine; Emaus, Per-Arne; Sparboe, Lars Olav; Robertsen, Roy; Steinsbø, Silje (Research report; Forskningsrapport, 2023)
      This is the final report for the project "Environmental impact of aquaculture and coexisting industries - scope for comprehensive regulation" - "MILJØREG". The project is funded by the Norwegian Fisheries and Aquaculture Industry's research funding. The main goal of the project has been to prepare a broad overview of the knowledge base related to the environmental impact of aquaculture, as well ...
    • Hepatic melanomacrophage centers in the arctic cultured fish Cyclopterus lumpus are not indicative of its health state 

      Passantino, Letizia; Corriero, Aldo; Pousis, Christo; Zupa, Rosa; Perillo, Antonella; Superio, Joshua Lustracion; Swain, Jaya Kumari; Foss, Atle; Galindo-Villegas, Jorge; Ventriglia, Gianluca (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-26)
      The lumpfish, Cyclopterus lumpus, holds significant promise as a candidate for large-scale aquaculture production, particularly in its role as a cleaner fish used to manage sea lice infestations in Atlantic salmon Salmo salar farming. Melanomacrophage centers (MMCs) represent polymorphic structures present in the hemolymphopoietic organs of various vertebrates, serving as a widely applicable ...
    • Effect of rotational harvesting on the size composition of Cape rock oysters Striostrea margaritacea on the east coast of South Africa 

      Steyn, Erika; Groeneveld, Johan C.; Santos, Antonio Jorge Fonseca Antunes (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-11)
      A commercial fishery for the Cape rock oyster Striostrea margaritacea along the north coast of KwaZulu-Natal, South Africa (western Indian Ocean), follows a 4-year rotational cycle, with each harvest year followed by 3 fallow years across four harvest zones. We analysed reported harvesting effort and catch information, and fishery-independent oyster size composition data collected over 18 years (Feb ...
    • Anatomical distribution of scavenger endothelial cells in bony fishes (Osteichthyes) 

      Seternes, Tore; Poppe, Trygve T; Bøgwald, Jarl; Lynghammar, Arve; Dalmo, Roy Ambli (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-28)
      The scavenger endothelial cells (SECs) of vertebrates are an important class of endocytic cells responsible for clearance of foreign and physiological waste macromolecules, partitioning in the immune system, functioning as a cellular powerplant by producing high energy metabolites like lactate and acetate. All animal phyla possess SECs, but the tissue localization of SECs has only been investigated ...
    • The structure of Norwegian seafood trade 

      Straume, Hans-Martin; Asche, Frank; Oglend, Atle; Gaasland, Ivar; Pettersen, Ingrid Kristine; Sogn-Grundvåg, Geir (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-30)
      While seafood is a highly traded commodity, lack of data has largely prevented examination of the firms and industries that are conducting the actual transactions. In this paper we use highly disaggregated data to provide an overview of the seafood exports from Norway, the world’s 2nd largest seafood exporting country, and a country where fisheries as well as aquaculture are important industries. ...
    • Alternative materialer til plast brukt i snurrevadtau og trålmatter 

      Alvestad, Anja Helene; Grimaldo, Eduardo; Lilleng, Grethe; Syversen, Tore; Vollstad, Jørgen; Johnsen, Hilde Rødås (Research report; Forskningsrapport, 2023-10-30)
      Dette prosjektet studerte ulike løsninger for å redusere effekten av slitasje fra fossilbasert, ikke-nedbrytbare plastmaterialer som brukes i snurrevad og trålmatter. Prosjektet testet ulike natur-, syntetiske og biologisk nedbrytbare materialer i laboratorium og i felt. Prosjektet kvantifiserte og sannsynliggjorde hvor mye reduksjon i utslipp ulike tiltak og løsninger kan bidra med. Det inkluderes ...
    • Arctic shipping trends during hazardous weather and sea-ice conditions and the Polar Code’s effectiveness 

      Müller, Malte; Knol-Kauffman, Maaike; Jeuring, Jelmer; Palerme, Cyril (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-15)
      The Arctic’s extreme environmental conditions and remoteness make it a complex and dynamic environment for maritime operators. We find that Arctic shipping has grown by 7% per year over the past decade, despite the hazardous weather and sea-ice conditions that pose risks to vessels operating in the region. As a result of a strong increase in winter sailing, the time ships operate in these extreme ...
    • Betydning av tidspunkt og lengde av vintersignal i RAS for prestasjon i sjø ved utsett av stor smolt 

      Ytrestøyl, Trine; Hjelde, Kirsti; Lal, Pradeep; Takvam, Marius; Gilannejad, Neda; Tronci, Valentina; Bæverfjord, Grete; Espmark, Åsa Maria Olofsdotter; Brunsvik, Per S.; Kolarevic, Jelena; Nilsen, Tom Ole; Gharbi, Naouel (Research report; Forskningsrapport, 2023-12-01)
      Under kontrollerte forhold i kar var det en positiv effekt av et vintersignal kombinert med brakkvann i RAS på vekst etter overføring til sjøvann. Men et vintersignal ga også økt kjønnsmodning i hannfisk når fisken gikk lenge i RAS på kontinuerlig lys etter at vintersignalet var avsluttet. Kjønnsmodning ble redusert når fisken ble satt ut på lav sjøtemperatur. Resultatene fra utsett i sjømerder viste ...
    • Different types of intuition at the workplace: an integrative review 

      Svenson, Frithiof; Pietrzak, Piotr; Launer, Markus A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-16)
      To make good decisions, employees must manage their own intuitions and be able to anticipate decision-making in their work environment. How well this is accomplished has significant consequences for the workplace. A closer examination indicates that individuals utilize various types of intuition. People’s work context is frequently omitted from studies on the use of intuition, resulting in a ...
    • Carnobacteria in fish 

      Ringø, Einar (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-19)
      Carnobacterium is a genus of Gram-positive bacteria, within family Carnobacteriaceae, and they are catalase- and oxidase-negative, non-sporing bacteria with properties such as CO<sup>2</sup> and L (+)- lactic acid production from glucose, but they are not able to grow on acetate agar. They are ubiquitous lactic acid bacteria and have been isolated from both cold and temperate environments, and ...
    • Holistic monitoring of freshwater and terrestrial vertebrates by camera trapping and environmental DNA 

      Holm, Anne Marie Rubæk; Knudsen, Steen Wilhelm; Månsson, Malene; Pedersen, Ditte Elmgreen; Nordfoss, Pauli Holm; Johansson, Daniel Klingberg; Gramsbergen, Marthe; Havmøller, Rasmus Worsøe; Sigsgaard, Eva Egelyng; Thomsen, Philip Francis; Olsen, Morten Tange; Møller, Peter Daniel Rask (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-20)
      The anthropogenic impact on the world's ecosystems is severe and the need for non-invasive, cost-effective tools for monitoring and understanding those impacts are therefore urgent. Here, we combine two such methods in a comprehensive multi-year study; camera trapping (CT) and analysis of environmental DNA (eDNA), in river marginal zones of a temperate, wetland Nature Park in Denmark. CT was ...