. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 14 L. IRVING, E. C. BLACK AND V. SAFFORD Blood of rainbow trout has, however, consistently a somewhat smaller CO2-combining power than the blood of the others. Judging from the slope of the curves, the buffering of the blood of the three species is similar at CO2 tensions greater than 10 mm. Up to 10 mm. the buffering of brook and brown trout somewhat exceeds that of rainbow trout, al- though the concentration of hemoglobin in the latter is usually larger than in the other two species. The amount of CCX combined with blood i
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 14 L. IRVING, E. C. BLACK AND V. SAFFORD Blood of rainbow trout has, however, consistently a somewhat smaller CO2-combining power than the blood of the others. Judging from the slope of the curves, the buffering of the blood of the three species is similar at CO2 tensions greater than 10 mm. Up to 10 mm. the buffering of brook and brown trout somewhat exceeds that of rainbow trout, al- though the concentration of hemoglobin in the latter is usually larger than in the other two species. The amount of CCX combined with blood increases with diminishing • Brook O Brown A Rainbow. P C02 FIG. 8. CO2 dissociation curves of trout blood at 3°, 15°, and 25°. temperature more rapidly than does the solubility of CO, alone. If the CO2 added to the blood increases the anion concentration, base must be removed by CO2 from the protein buffers, which, as weak acids, must then undergo a decline in strength in comparison with carbonic acid. The amount of base lost by proteins and gained by CO2 is equivalent to the change from to volumes per cent of combined CO2 between 25° and 3° or millimols per liter. Along with this decline in base- binding power of the protein, the affinity of the hemoglobin for oxygen increases as the temperature Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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