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The effect of hemolysis upon the combination of oxygen with the blood of some marine fishes

โœ Scribed by Root, R. W. ;Irving, Laurence ;Black, E. C.

Publisher
Wiley (John Wiley & Sons)
Year
1939
Tongue
English
Weight
652 KB
Volume
13
Category
Article
ISSN
0095-9898

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โœฆ Synopsis

FOUR FIGUKES

It has been shown that CO, greatly reduces the amount of 0, which can combine with the blood of certain fishes (Krogh and Leitch, '19; Root, '31; Green and Root, '33; Willmer, '34; Black and Irving, '37).

130th marine and fresh-water fishes possess blood with varying degrees of sensitivity toward CO,. This property of the blood of fish appears to be essential for respiration, for the hemoglobin is halfsaturated at low pressures of 0,, between 5 and 15 mm., provided that the pressure of CO, is small. I n consequence the load of 0, can easily be picked up in the gills, but the bulk of the load of 0, is then conveyed through the arterial system at low pressure. I n the tissues, however, the addition of CO, diminishes markedly the affinity of hemoglobin for 0, and, thus, serves to provide a pressure head which is adequate for diffusion.

'The authors are indebted to the U. S. Bureau of Fisheries at Woods Hole for laboratory space and a part of the facilities required to carry on this work.

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