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Branchial and Renal Acid and Ion Fluxes in the Rainbow Trout, Salmo Gairdneri, at Low Environmental pH
Abstract
Rainbow trout were exposed for 4 days to an environmental pH averaging 4·2, an exposure which resulted in a continuous net branchial influx of acid. The influx provoked a progressive depression in blood pH and [HCO3−], virtually complete by 48 h, and a marked increase in renal acid excretion, also complete by 48 h. The increase in the latter was sufficient to remove, at maximum, about half of the protons entering at the gills; those remaining were buffered in body fluids. The low pH exposure also impaired gill ion regulation as indicated by continuous net branchial losses of Na+, Cl− and K+ and by a progressive decline in plasma Na+ and Cl− levels. Evidence is presented which indicates that there was a significant contribution by the intracellular compartment both to the total body ion losses and to the buffering of the body acid load.
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Cited by
Why do fish die after severe exercise?
Wood, C. M., Turner, J. D., & Graham, M. S. (1983) · Journal of Fish Biology · doi:10.1111/j.1095-8649.1983.tb04739.x · Cited by 403
Self-citationScott, D. M., Lucas, M. C., & Wilson, R. W. (2005) · Aquatic Toxicology · doi:10.1016/j.aquatox.2004.12.013 · Cited by 81
Weerathunga, W. A. M. T., & Rajapaksa, G. (2020) · Frontiers in Zoology · doi:10.1186/s12983-019-0348-3 · Cited by 19
Metadata
- Authors
- McDONALD, D. G., & Wood, C. M.
- Venue
- Journal of Experimental Biology
- Publisher
- The Company of Biologists
- Published
- 1981-08-01
- Volume
- 93
- Issue
- 1
- Pages
- 101-118
- ISSN
- 0022-0949 (ISSN-L)
- 1477-9145
- OpenAlex
- W1902547085
- Cited by
- 264
- References
- 0
- FWCI
- 9.61
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Branchial and Renal Acid and Ion Fluxes in the Rainbow Trout, Salmo Gairdneri, at Low Environmental pH. https://app.cochat.ai/papers/10.1242/jeb.93.1.101
- The paper
- McDONALD, D. G., & Wood, C. M. (1981). Branchial and Renal Acid and Ion Fluxes in the Rainbow Trout, Salmo Gairdneri, at Low Environmental pH. Journal of Experimental Biology. https://doi.org/10.1242/jeb.93.1.101
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
