• Extent and ecological importance of escape through spawning in sea-cages for Atlantic cod 

      Uglem, Ingebrigt; Knutsen, Øyvind; Kjesbu, Olav Sigurd; Hansen, Øyvind J; Mork, Jarle; Bjørn, Pål Arne; Varne, Rebekka; Nilsen, Rune; Ellingsen, Ingrid H.; Dempster, Timothy David (Journal article; Peer reviewed, 2012)
      The culture of certain fish species to sizes at which they can reproduce has led to the escape of fertilised eggs or ‘escape through spawning’. To investigate the extent and ecological importance of spawning in sea-cages ...
    • Farmed cod escapees and net-pen spawning left no clear genetic footprint in the local wild cod population. 

      Varne, Rebekka; Kunz, Kristina Lore; Johansen, Torild; Westgaard, Jon-Ivar; Uglem, Ingebrigt; Mork, Jarle (Journal article; Peer reviewed, 2015-11-18)
      This study investigated a potential genetic introgression from farmed to wild cod Gadus morhua L. in the Trondheimsfjord, Norway. During the first 2 yr of operation of a cod farm in the inner part of the fjord, 2 large ...
    • Heart rate and swimming activity as stress indicators for Atlantic salmon (Salmo salar) 

      Svendsen, Eirik; Føre, Martin; Økland, Finn; Gräns, Albin; Hedger, Richard David; Alfredsen, Jo Arve; Uglem, Ingebrigt; Rosten, Carolyn; Frank, Kevin; Erikson, Ulf Gøran; Finstad, Bengt (Peer reviewed; Journal article, 2020)
      We investigated the relationship between telemetry measurements of heart rate and swimming activity and the physiological status in farmed Atlantic salmon (Salmo salar) to assess the potential to use telemetry measurements ...
    • Modelling mitigation measures for smolt migration at dammed river sections 

      Szabo-Meszaros, Marcell; Forseth, Torbjørn; Baktoft, Henrik; Fjeldstad, Hans-Petter; Silva, Ana T.; Gjelland, Karl Øystein; Økland, Finn; Uglem, Ingebrigt; Alfredsen, Knut (Journal article; Peer reviewed, 2019)
      There is no generic solution to establish safe passage of downstream migrating fish passed hydropower facilities and mitigation measures are species‐ and site‐specific. Development of solutions is thus often based on “trial ...
    • The risk of individual fish being captured multiple times in a catch and release fishery 

      Thorstad, Eva Bonsak; Diserud, Ola Håvard; Solem, Øyvind; Havn, Torgeir Børresen; Bjørum, Lars Rasmus Oftedal; Kristensen, Torstein; Urke, Henning Andre; Johansen, Martin Rognli; Lennox, Robert J.; Fiske, Peder; Uglem, Ingebrigt (Peer reviewed; Journal article, 2019)
      The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch ...
    • The Effect of Catch and Release Angling at High Water Temperatures on Behavior and Survival of Atlantic Salmon (Salmo salar L.) 

      Havn, Torgeir Børresen (Master thesis, 2013)
      Many wild Atlantic salmon (Salmo salar L.) populations have declined during the last decades. A multitude of restrictions on riverine fisheries have been initiated to preserve spawning populations, including increased use ...
    • Tracing the fate of escaped farmed cod (Gadus morhua L.) in a Norwegian fjord system 

      Varne, Rebekka (Doctoral thesis at NTNU;2016:116, Doctoral thesis, 2016)
      Summary of thesis: The aim of this thesis was to investigate the fate of escaped farmed cod and detect any introgression in the local stock. Phenotypic discrimination of wild and farmed cod, and genetic baseline values ...
    • Using acoustic telemetry to monitor the effects of crowding and delousing procedures on farmed Atlantic salmon (Salmo salar) 

      Føre, Martin; Svendsen, Eirik; Alfredsen, Jo Arve; Uglem, Ingebrigt; Bloecher, Nina; Sveier, Harald; Sunde, Leif Magne; Frank, Kevin (Journal article; Peer reviewed, 2018)
      The aim of this study was to demonstrate the feasibility of acoustic telemetry for monitoring fish during farm operations and gather knowledge about Atlantic salmon responses during crowding and delousing events in a ...