Now showing items 1-5 of 5

  • Egg buoyancy variability in local populations of Atlantic cod (Gadus morhua) 

    Jung, Kyung-Mi; Folkvord, Arild; Kjesbu, Olav Sigurd; Agnalt, Ann Lisbeth; Thorsen, Anders; Sundby, Svein (Springer, 2012)
    Previous studies have found strong evidences for Atlantic cod (Gadus morhua) egg retention in fjords, which are caused by the combination of vertical salinity structure, estuarine circulation, and egg specific ...
  • Experimental parameterisation of principal physics in buoyancy variations of marine teleost eggs 

    Jung, Kyung Mi; Folkvord, Arild; Kjesbu, Olav Sigurd; Sundby, Svein (Public Library of Science, 2014-08-14)
    It is generally accepted that the high buoyancy of pelagic marine eggs is due to substantial influx of water across the cell membrane just before ovulation. Here we further develop the theoretical basis by applying laboratory ...
  • Foraging behaviour of larval cod (Gadus morhua) at low light intensities 

    Vollset, Knut Wiik; Folkvord, Arild; Browman, H. I. (Springer, 2011-02-13)
    The ability to forage at lowlight intensities can be of great importance for the survival of fish larvae in a pelagic environment. Three-dimensional silhouette imaging was used to observe larval cod foraging and swimming ...
  • Timing and selectivity of mortality in reared Atlantic cod revealed by otolith analysis 

    Folkvord, Arild; Koedijk, Roland M.; Lokøy, Vibeke; Imsland, Albert K. (Springer, 2010-11-03)
    In juvenile fish production, large samples of known-aged material can be sampled at pre-determined time intervals from the same population. This enables an accurate determination of size-selective mortality by means of ...
  • Trade-offs between growth and reproduction in wild Atlantic cod 

    Folkvord, Arild; Jørgensen, Christian; Korsbrekke, Knut; Nash, Richard David Marriott; Nilsen, Trygve; Skjæraasen, Jon Egil (NRC Research Press, 2014-04-08)
    Animals partition and trade off their resources between competing needs such as growth, maintenance, and reproduction. Over a lifetime, allocation strategies should result in distinct trajectories for growth, survival, and ...