Abstract
More than terrestrial animals, fishes are subject to environmentally-induced disturbances of the acid-base status. Furthermore, some of the classical measures available for transient acid-base regulation are very much reduced in their efficiency in water-breathing fishes. This is primarily related to the low solubility of oxygen in water, which is, depending on temperature, 20–40 times less than the equivalent capacitance of air. Accordingly water-breathing fish are forced to ventilate their gills at a rate 20–40 times higher than a comparable air-breathing species with the same oxygen consumption and extraction ratio. Also, reductions in environmental water PO2 are encountered by fish much more frequently and to a much larger extent than by air breathers, even at altitude or during borrowing.
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© 1985 Springer-Verlag Berlin Heidelberg
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Heisler, N. (1985). Branchial Ion Transfer Processes as Mechanisms for Fish Acid-Base Regulation. In: Gilles, R., Gilles-Baillien, M. (eds) Transport Processes, Iono- and Osmoregulation. Proceedings in Life Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-70613-4_16
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DOI: https://doi.org/10.1007/978-3-642-70613-4_16
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