Journal of comparative physiology

, Volume 86, Issue 4, pp 315–321 | Cite as

The role of the gills in seawater adaptation inAnguilla dieffenbachii

II. Net ion fluxes in isolated perfused gills
  • T. J. Shuttleworth
  • R. F. H. Freeman


Throughout the period of adaptation to sea water the net flux of potassium in the isolated gills remains constant. Initially on transfer to sea water a small net influx of sodium and chloride ions is recorded in the isolated gills. Within a short period of time a net outflux of sodium and chloride is recorded which progressively increases, reaching a maximum after approximately 100 hours of adaptation (Fig. 1).

Despite unfavourable osmotic and ionic gradients the functioning of the isolated gill is such that the concentration of the fluid passing through it is actually reduced after some 10–15 hours of seawater adaptation (Fig. 2).


Sodium Chloride Potassium Ionic Gradient Seawater Adaptation 
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Copyright information

© Springer-Verlag 1973

Authors and Affiliations

  • T. J. Shuttleworth
    • 1
  • R. F. H. Freeman
    • 1
  1. 1.Department of ZoologyUniversity of OtagoDunedinNew Zealand

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