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Biol Bull 84: 207-212. (June 1943)
© 1943 Marine Biological Laboratory
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THE EFFECT OF CARBON DIOXIDE AND LACTIC ACID ON THE OXYGEN-COMBINING POWER OF WHOLE AND HEMOLYZED BLOOD OF THE MARINE FISH TAUTOGA ONITIS (LINN.)

R. W. ROOT 1 and LAURENCE IRVING 1

1 The Department of Biology, College of the City of New York; The Edward Martin Biological Laboratory, Swarthmore College; and The Marine Biological Laboratory, Woods Hole

A study has been made of the effect of carbon dioxide and lactic acid on the oxygen-combining power of whole and hemolyzed tautog blood. The data presented show the change in oxygen-combining power of the blood as a function of pH, when the pH is modified either by the addition of carbon dioxide, or lactic acid. Both whole and hemolyzed blood lose much of their ability to combine with oxygen as the pH is lowered. The effect of carbon dioxide and lactic acid is quite similar. The similarity between the effects of carbon dioxide and lactic acid suggests that carbon dioxide and anions lactate and bicarbonate have no special effect beyond the result of acidity.

The contrast in oxygen affinity of whole and hemolyzed blood is shown by the fact that hemolyzed blood must be made one pH unit lower than the calculated pH of the cells to produce the same reduction of oxygen affinity.




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 J. Exp. Biol.Home page
W. Waser and N. Heisler
Oxygen delivery to the fish eye: Root effect as crucial factor for elevated retinal PO2
J. Exp. Biol., November 1, 2005; 208(21): 4035 - 4047.
[Abstract] [Full Text] [PDF]


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