Effect of High Concentration of Carbon Dioxide on the Ionic Composition of Rainbow Trout Blood

Abstract

PREVIOUS work has demonstrated that although moderately high concentrations of free carbon dioxide in the water decrease the ability of fish to extract oxygen from the water1,2 and to withstand low oxygen concentrations3, this effect is diminished if the fish become acclimatized to the level of free carbon dioxide which is present2,4. It is known that acclimatization involves an increase in the alkali reserve of the blood to maintain the pH value at the normal venous level of 7.2 (ref. 5). The experiment reported here was made to determine changes in other ionic components of the blood, as part of a wider programme to investigate the reactions of fish to physical and chemical changes in their environment.

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LLOYD, R., WHITE, W. Effect of High Concentration of Carbon Dioxide on the Ionic Composition of Rainbow Trout Blood. Nature 216, 1341–1342 (1967). https://doi.org/10.1038/2161341a0

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