Fish Physiology and Biochemistry

, Volume 15, Issue 6, pp 491–511 | Cite as

Food deprivation and refeeding in Atlantic salmon,Salmo salar: effects on brain and liver carbohydrate and ketone bodies metabolism

  • J. L. Soengas
  • E. F. Strong
  • J. Fuentes
  • J. A. R. Veira
  • M. D. AndrésEmail author


The capacity of carbohydrate and ketone bodies metabolism in brain and liver was evaluated in fed and food-deprived Atlantic salmon (Salmo salar) in a time period covering from 1 to 7 days (Experiment I), and in Atlantic salmon food deprived for 6 weeks, and food deprived for 4 weeks and refed for 2 weeks (Experiment II). The results obtained demonstrate for the first time in a teleost the existence of changes in brain metabolism due to food deprivation. Thus, decreased glucose levels in plasma are reflected in the brain by an increased mobilization of glycogen reserves, and by a decreased glycolytic capacity. Also, ketone bodies appear to increase their importance as a metabolic fuel from day 7 of food deprivation onwards. A possible increase in the gluconeogenic potential in brain simultaneously is not discarded. All these metabolic changes are reversed under refeeding conditions.


Atlantic salmon brain liver food deprivation glucose ketone bodies 


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Copyright information

© Kugler Publication bv Amsterdam 1996

Authors and Affiliations

  • J. L. Soengas
    • 1
  • E. F. Strong
    • 2
  • J. Fuentes
    • 2
    • 4
  • J. A. R. Veira
    • 3
  • M. D. Andrés
    • 2
    Email author
  1. 1.Area de Fisioloxia Animal, Facultade de CienciasUniversidade de VigoVigoSpain
  2. 2.Laboratorio de Fisioloxia Animal-Departamento de Fisioloxia, Facultade de BioloxiaUniversidade de Santiago de CompostelaSantiago de CompostelaSpain
  3. 3.Departamento de Fisioloxia, Facultade de VeterinariaUniversidade de Santiago de CompostelaSpain
  4. 4.Biological SciencesUniversity of DundeeDundeeScotland, U.K.

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