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Energy losses due to routine and feeding metabolism in young-of-the-year juvenile Atlantic cod (Gadus morhua)
Peck, M.A.; Buckley, L.J.; Bengtson, D.A. (2003). Energy losses due to routine and feeding metabolism in young-of-the-year juvenile Atlantic cod (Gadus morhua). Can. J. Fish. Aquat. Sci. 60(8): 929-937. https://dx.doi.org/10.1139/F03-079
In: Canadian Journal of Fisheries and Aquatic Sciences = Journal canadien des sciences halieutiques et aquatiques. National Research Council Canada: Ottawa. ISSN 0706-652X; e-ISSN 1205-7533
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    A, North Atlantic
    ANW, Georges Bank
    Aquatic organisms > Marine organisms > Fish > Marine fish
    Body size
    Energy
    Environmental effects > Temperature effects
    Feeding
    Gadus morhua Linnaeus, 1758 [WoRMS]
    Georges Bank [Marine Regions]; North Atlantic Ocean [Marine Regions]
    Marien/Kust
Auteurs  Top 
  • Peck, M.A.
  • Buckley, L.J.
  • Bengtson, D.A.
Abstract
    We examined the effects of body size (3-13 cm total length) and temperature (4.5, 8.0, 12.0, and 15.5 °C) on routine (RR) and feeding (RSDA) energy losses by laboratory-reared, young-of-year juvenile Atlantic cod (Gadus morhua). The magnitude of the effect of temperature on RR, expressed via the Q10, was nonlinear. Q10 values were greatest at temperatures between 4.5 and 8.0 °C and were lowest between 8.0 and 15.5 °C, with larger fish tending to exhibit the greatest change in RR irrespective of the temperature combination. Energy losses resulting from RSDA were ~4% of consumed energy, a value less than half that estimated for larger, year-1+ juvenile cod fed similar-sized rations. Data from this and other studies were combined to generate an equation estimating routine energy loss at different temperatures and body sizes for cod. The equation describes RR over the eight orders of magnitude difference in body size from young larvae to adults within a range of environmental temperatures experienced by this species on Georges Bank and other areas in the North Atlantic.
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