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The effects of acute hypoxia and hypercapnia on oxygen consumption of the freshwater European eel
Cruz-Neto, A.P.; Steffensen, J.F. (1997). The effects of acute hypoxia and hypercapnia on oxygen consumption of the freshwater European eel. J. Fish Biol. 50(4): 759-769
In: Journal of Fish Biology. Fisheries Society of the British Isles: London,New York,. ISSN 0022-1112, more
Peer reviewed article  

Available in Authors 

Keywords
    Carbon dioxide; Dissolved oxygen; Fish culture; Hypercapnia; Hypoxia; Oxygen consumption; Anguilla anguilla (Linnaeus, 1758) [WoRMS]; Marine; Fresh water

Authors  Top 
  • Cruz-Neto, A.P.
  • Steffensen, J.F.

Abstract
    When exposed to hypoxia, eels Anguilla anguilla were able to regulate and maintain VO2 down to a water oxygen tension (PwO2) of about 25 mmHg, a value far below those reported in other studies. When exposed to hypercapnia, eels showed a depression in VO2 as water carbon dioxide tension (PwCO2) increased. Faced with combined hypoxia-hypercapnia, eels showed an increase in their sensitivity to hypoxia, and the critical oxygen tension increased to 40-45 mmHg. The possible mechanisms underlying these responses were discussed, and the implications of such findings for extensive culture of eels were highlighted.

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