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Salt stress and resistance to hypoxic challenges in the common carp (Cyprinus carpio L.)
De Boeck, G.; Vlaeminck, A.; Blust, R. (2000). Salt stress and resistance to hypoxic challenges in the common carp (Cyprinus carpio L.). J. Fish Biol. 57(3): 761-776. https://hdl.handle.net/10.1006/jfbi.2000.1349
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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Keyword
    Brackish water
Author keywords
    salt; hypoxia; carp; critical oxygen concentration; phosphocreatine

Authors  Top 
  • De Boeck, G., more
  • Vlaeminck, A.
  • Blust, R., more

Abstract
    Long term exposure to brackish water (171 mM NaCl) affected the capacity of common carp Cyprinus carpio to deal with hypoxic conditions and the critical oxygen concentrations for oxygen consumption increased. In addition, regulation of ammonia excretion was lost. The cytosolic phosphorylation potential (the index of the energy status of a cell in terms of potential transferable phosphate groups) in the lateral muscle on the other hand remained relatively unaffected, indicating that oxygen transport to the tissues was not severely compromised. It appears that exposure to brackish water reduces the capacity of common carp to cope with hypoxic conditions mainly because of the high energetic cost of hyperventilation under conditions where energy stores are depleted, and not because of any impeded oxygen transport mechanisms. (C) 2000 The Fisheries Society of the British Isles.

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