Viser treff 41-60 av 1576

    • 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 ...
    • Gillnet colour affects catch efficiency in pearlspot (Etroplus suratensis) tropical estuary fishery 

      Cerbule, Kristine; Madhu, V.R.; Mohanan, Salini; Herrmann, Bent (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-19)
      Gillnets are one of the most commonly used fishing gears in both marine and inland waters. Different colour filament nettings are often used in gillnets. However, the effect of gillnet colour on catch efficiency is unclear for most fisheries. Therefore, in this study we investigated the effect of gillnet colour on the catch efficiency in pearlspot (Etroplus suratensis) fishery in Vembanad lake, ...
    • Advice on fishing opportunities for Barents Sea capelin in 2024 — ICES subareas 1 and 2 excluding Division 2.a west of 5°W 

      Howell, Daniel; Nielsen, Anders; Stock, Brian; Ono, Kotaro; Clain, Laura; Fossheim, Maria; Wenneck, Thomas de Lange; Harbitz, Alf; Rodriguez, Alfonso Pérez; Iriondo, Ane; Staby, Arved; Bogstad, Bjarte; Husson, Berengere; Marshall, C. Tara; Tranang, Caroline Aas; Johannesen, Edda; Vozgirdas, Eduardas; Eriksen, Elena; Eidset, Elise; Hallfredsson, Elvar H.; Berg, Erik; Skaret, Georg; Höffle, Hannes; Jacobsen, Jan Arge; Stiansen, Jan Erik; Godiksen, Jane Aanestad; Janusz, Jerzy; Fall, Johanna Jennifer Elisabeth; Trochta, John Tyler; Gondra, Jon Ruiz (Research report; Forskningsrapport, 2023-10-16)
    • Alternative Rope Materials in Towed Fishing Gear to Reduce Plastic Waste, A Comparative Study of Mechanical Properties and Tolerance Against Wear and Tear 

      Føre, Heidi Moe; Hatlebrekke, Hanne Hjelle; Grimaldo, Eduardo (Chapter; Bokkapittel, 2023-06)
      This paper presents a comparative study assessing the wear tolerance of rope materials in demersal fisheries, specifically seine ropes and dolly ropes. Fourteen different rope materials were assessed in this study, including conventional and alternative commercially available synthetic polymers, and biodegradable materials including natural fibre ropes and custom-made polyester monofilaments. The ...
    • New marine low trophic resources as food: nutritional and food safety aspects 

      Elvevoll, Edel Oddny; Eilertsen, Karl-Erik; Aschan, Michaela Maria; Bandarra, Narcissa (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      Food agencies recommend increasing the consumption of aquatic food to promote healthy living and sustainability, and, particularly, to prevent Western lifestyle-related diseases and secure sustainable food systems. This requires growth in global seafood production, and the utilization of low trophic species (LTS) is suggested. LTS are already considered nutritious and important in Asian and ...
    • Understanding the effect of design parameters on the filtration efficiency of trawls intended for commercial harvesting of zooplankton 

      Grimaldo, Eduardo; Herrmann, Bent; Kostak, Enis Noyan; Brinkhof, Jesse Vallevik (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-01)
      A major challenge for the aquaculture sector is access to sustainable and cost-effective raw materials for feed. Copepods (Calanus spp.) have potential to meet this need for large volumes of marine raw materials to enable sustainable growth of aquaculture production worldwide. However, the lack of an energy- and catch-efficient trawl technology has limited the development of this fishery in the ...