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Seasonal variations in biochemical composition and energy content of liver, gonad and muscle of mature and immature cod, Gadus morhua (L.) from Balsaorden, northern Norway
Eliassen, J-E.; Vahl, O. (1982). Seasonal variations in biochemical composition and energy content of liver, gonad and muscle of mature and immature cod, Gadus morhua (L.) from Balsaorden, northern Norway. J. Fish Biol. 20(6): 707-716
In: Journal of Fish Biology. Fisheries Society of the British Isles: London,New York,. ISSN 0022-1112; e-ISSN 1095-8649, more
Peer reviewed article  

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Keywords
    Anatomical structures > Body organs > Animal organs
    Anatomical structures > Body organs > Animal organs > Animal reproductive organs
    Composition > Biochemical composition
    Cycles > Life cycle
    Energy budget
    Musculoskeletal system > Muscles
    Secretory organs > Glands > Exocrine glands > Digestive system > Digestive glands > Liver
    Spawning
    Gadus morhua Linnaeus, 1758 [WoRMS]
    Marine/Coastal

Authors  Top 
  • Eliassen, J-E.
  • Vahl, O.

Abstract
    Seasonal energy changes in mature and immature cod of the same size were studied. For most ofthe year, the variations in energy content iathe tissues ofboth mature and immature cod are similar. In the period from October to January, the fish accumulate energy. From January until spawning in early April there is a fall in the total energy content. The growth of gonads from January until spawning can explain about one-third of the energy decrease in liver and muscle.

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