oa African Zoology - Respiratory characteristics of the blood of Labeo Umbratus (Smith) and Labeo Capensis (Smith)

Volume 10, Issue 1
  • ISSN : 1562-7020
  • E-ISSN: 2224-073X



Various respiratory characteristics of mudfish blood were investigated. Oxygen and carbon dioxide contents of mixed venous blood were 1,17�0,53 and 11,35�1,65 vol. % respectively. Blood oxygen dissociation curves showed p50 values of 11,84�3,1; 13,77�2,0 and 18,05�4,7 mm Hg at CO2 concentrations of 0-1 %,4-5% and 9-10%. A marked Bohr effect of -0,59 was observed and the Haldane effect was found to be relatively low. No differences could be observed between the characteristics of L. umbratus and L. capensis blood.

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