The regularities of changes in the sodium ion levels in fish erythrocytes during adaptation to a temperature

Martemyanov, V.
August 2009
Biology Bulletin;Aug2009, Vol. 36 Issue 4, p412
Academic Journal
It has been shown that unlike fish blood plasma and muscles, the relation between sodium level and temperature is a specific characteristic of erythrocytes. The patterns of changes in the sodium level in fish erythrocytes under a rise in water temperature during annual cycles and under experimental conditions correspond to a certain extent to those registered when the metabolism intensity in fish is determined (the Krogh curve). These changes reflect the participation of sodium ions in the increase of the erythrocytes’ oxygen carrying capacity. This happens during adaptation of fish to oxygen deficiency due to a decrease in this gas solubility in water with increased fish metabolism in response to a rise in temperature.


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