Blar i forfatter "Mortensen, Atle"

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    • Divergent responses of Atlantic cod to ocean acidification and food limitation 

      Stiasny, Martina H.; Sswat, Michael; Mittermayer, Felix H.; Falk-Petersen, Inger-Britt; Schnell, Nalani K.; Puvanendran, Velmurugu; Mortensen, Atle; Reusch, Thorsten B.H.; Clemmesen, Catriona (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-12-20)
      In order to understand the effect of global change on marine fishes, it is imperative to quantify the effects on fundamental parameters such as survival and growth. Larval survival and recruitment of the Atlantic cod (<i>Gadus morhua</i>) was found to be heavily impaired by end‐of‐century levels of ocean acidification. Here, we analysed larval growth among 35‐36 days old surviving larvae, along with ...

    • Effects of parental acclimation and energy limitation in response to high CO2 exposure in Atlantic cod 

      Stiasny, Martina H.; Mittermayer, Felix H.; Göttler, Gwendolin; Bridges, Christopher R.; Falk-Petersen, Inger-Britt; Puvanendran, Velmurugu; Mortensen, Atle; Reusch, Thorsten B. H.; Clemmesen, Catriona M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-29)
      Ocean acidification (OA), the dissolution of excess anthropogenic carbon dioxide in ocean waters, is a potential stressor to many marine fish species. Whether species have the potential to acclimate and adapt to changes in the seawater carbonate chemistry is still largely unanswered. Simulation experiments across several generations are challenging for large commercially exploited species because ...

    • Northern cod species face spawning habitat losses if global warming exceeds 1.5°C 

      Dahlke, Flemming T.; Butzin, Martin; Nahrgang, Jasmine; Puvanendran, Velmurugu; Mortensen, Atle; Pörtner, Hans-Otto; Storch, Daniela (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-28)
      Rapid climate change in the Northeast Atlantic and Arctic poses a threat to some of the world’s largest fish populations. Impacts of warming and acidification may become accessible through mechanism-based risk assessments and projections of future habitat suitability. We show that ocean acidification causes a narrowing of embryonic thermal ranges, which identifies the suitability of spawning ...

    • Optimizing intensive culture protocols for Atlantic cod (Gadus morhua) larvae 

      Puvanendran, Velmurugu; Swain, Trilochan; Tveiten, Helge; Hansen, Øyvind J; Mortensen, Atle (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-22)
      Larval cod require live prey as food, and prey concentration (PC) and feeding frequency (FF) often afect their growth and survival. Apart from this, water exchange rates/water fow (WER/WF) and water current (WC) also afect the prey resident time in the tank and larval/early juvenile behaviour, respectively. High water current is also known to induce stress in fnfsh larvae, and this stress response ...