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Branchial Ion Transfer Processes as Mechanisms for Fish Acid-Base Regulation

  • N. Heisler
Conference paper
Part of the Proceedings in Life Sciences book series (LIFE SCIENCES)

Abstract

More than terrestrial animals, fishes are subject to environmentally-induced disturbances of the acid-base status. Furthermore, some of the classical measures available for transient acid-base regulation are very much reduced in their efficiency in water-breathing fishes. This is primarily related to the low solubility of oxygen in water, which is, depending on temperature, 20–40 times less than the equivalent capacitance of air. Accordingly water-breathing fish are forced to ventilate their gills at a rate 20–40 times higher than a comparable air-breathing species with the same oxygen consumption and extraction ratio. Also, reductions in environmental water PO2 are encountered by fish much more frequently and to a much larger extent than by air breathers, even at altitude or during borrowing.

Keywords

Gill Epithelium Gill Ventilation Plasma Bicarbonate Concentration Conger Conger Environmental Hypercapnia 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1985

Authors and Affiliations

  • N. Heisler
    • 1
  1. 1.Abteilung PhysiologieMax-Planck-Institut f. experimentelle MedizinGöttingenGermany

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