• Assessing swimming capacity and schooling behaviour in farmed Atlantic salmon Salmo salar with experimental push-cages 

      Hvas, Malthe; Folkedal, Ole; Solstorm, David; Vågseth, Tone; Fosse, Jan Olav; Gansel, Lars Christian; Oppedal, Frode (Journal article; Peer reviewed, 2017)
      The Atlantic salmon aquaculture industry is expanding to more exposed locations that often are characterized by occasional very strong currents. This necessitates new guidelines concerning acceptable animal welfare and a ...
    • Drag Forces and deformation of aquaculture cages – full-scale towing tests in the field 

      Gansel, Lars Christian; Oppedal, Frode; Birkevold, Jens; Tuene, Stig Atle (Journal article; Peer reviewed, 2018)
      Fish cages can experience strong loads due to hydrodynamic forces in the sea. Numerical models are often used to estimate drag forces on net cages, and the development and validation of such models is mostly based on ...
    • Effect of temperature on the metabolism, behaviourand oxygen requirements of Sparus aurata 

      Remen, Mette; Olsen, Rolf Erik; Oppedal, Frode; Thorsheim, Grethe Beate; Folkedal, Ole; Sitjà-Bobadilla, Ariadna; Pérez-Sánchez, Jaume; Nederlof, Marit A. J. (Journal article; Peer reviewed, 2015)
      We investigated the effect of temperature on the limiting oxygen saturation (LOS) of gilthead sea bream Sparus aurata. This threshold was defined as the % O2 saturation where fish no longer upheld their routine metabolic ...
    • Fast currents reduce production performance of post-smolt Atlantic salmon. 

      Solstorm, Frida; Solstorm, David; Oppedal, Frode; Fernø, Anders; Fraser, Thomas; Olsen, Rolf Erik (Journal article; Peer reviewed, 2015)
      In the future, an increasing number of salmon farms may be located in areas with fast water current velocity due to limited availability of more sheltered locations. However, there is little information as to how fast ...
    • Finding the needle in the haystack: Comparison of methods for salmon louse enumeration in plankton samples 

      Bui, Samantha; Dalvin, Sussie; Vågseth, Tone; Oppedal, Frode; Fossøy, Frode; Brandsegg, Hege; Jacobsen, Ása; Nordi, Gunnvør á; Fordyce, Mark; Michelsen, Helena Kling; Finstad, Bengt; Skern-Mauritzen, Rasmus (Peer reviewed; Journal article, 2021)
      The economic and social implications of salmon louse (Lepeophtheirus salmonis) epidemics in salmon aquaculture drive focus of the dispersal dynamics of the planktonic larval stages. The vast spatial scale and high connectivity ...
    • Fish welfare based classification method of ocean current speeds at aquaculture sites 

      Jónsdóttir, Kristbjörg Edda; Hvas, Malthe; Alfredsen, Jo Arve; Føre, Martin; Alver, Morten; Bjelland, Hans Vanhauwaert; Oppedal, Frode (Journal article; Peer reviewed, 2019)
      ABSTRACT: A major trend in marine aquaculture is to move production to more exposed sites with occasionally rough ocean current events. However, it is unclear whether fish will thrive in these extreme environments, since ...
    • Not too slow, not too fast: water currents affect group structure, aggression and welfare in postsmolt Atlantic salmon Salmo salar 

      Solstorm, Frida; Solstorm, David; Oppedal, Frode; Olsen, Rolf Erik; Stien, Lars Helge; Fernø, Anders (Journal article; Peer reviewed, 2016)
      Increased swimming speed of Atlantic salmon is generally considered an improvement to welfare under aquaculture settings, as group structure is improved and agonistic behaviour reduced. As such, establishing fish farms in ...
    • Novel tag-based method for measuring tailbeat frequency and variations in amplitude in fish 

      Warren-Myers, F.; Svendsen, Eirik; Føre, Martin; Folkedal, Ole; Oppedal, Frode; Hvas, Malthe (Peer reviewed; Journal article, 2023)
      The tailbeat frequency (TBF) together with tailbeat amplitude (TBA) of fish are tightly correlated with swimming speed. In addition, these parameters can be used as indicators of metabolic rate and general activity level, ...
    • Tag use to monitor fish behaviour in aquaculture: a review of benefits, problems and solutions 

      Macaulay, Georgia; Warren-Myers, Fletcher; Barrett, Luke T.; Oppedal, Frode; Føre, Martin; Dempster, Tim (Peer reviewed; Journal article, 2021)
      A variety of tagging techniques are now available to monitor fish behaviour, physiology and their environmental experience. Tagging is frequently used in aquaculture research to monitor free-swimming individuals within ...