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The Influence of Calcium on the Physiological Responses of the Rainbow Trout, Salmo Gairdneri, to Low Environmental pH
Abstract
The physiological responses of 1- to 2-year-old rainbow trout to low pH are dependent on the environmental calcium concentration. Trout, maintained for 5 days in moderately hard water ([Ca2+] = 1·6 −2·7 m-equiv/1) at a mean pH of 4·3, developed a major blood acidosis but exhibited only a minor depression in plasma ion levels. In acidified soft water ([Ca2+] = 0·3 m-equiv/1), only a minor acidosis occurred, but plasma ion levels fell and there were substantially greater mortalities. Lethal bioassays performed on fingerling trout over a range of pH levels (3·0−4·8) revealed an important influence of external [Ca2+] on resistance to acid exposure. Terminal physiological measurements on adult fish succumbing to low pH in soft water indicate the singular importance of iono-regulatory failure as the toxic mechanism of action under these circumstances.
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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., Hobe, H., & Wood, C. M.
- Venue
- Journal of Experimental Biology
- Publisher
- The Company of Biologists
- Published
- 1980-10-01
- Volume
- 88
- Issue
- 1
- Pages
- 109-132
- ISSN
- 0022-0949 (ISSN-L)
- 1477-9145
- OpenAlex
- W2398069780
- Cited by
- 212
- References
- 0
- FWCI
- 11.91
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: The Influence of Calcium on the Physiological Responses of the Rainbow Trout, Salmo Gairdneri, to Low Environmental pH. https://app.cochat.ai/papers/10.1242/jeb.88.1.109
- The paper
- McDONALD, D. G., Hobe, H., & Wood, C. M. (1980). The Influence of Calcium on the Physiological Responses of the Rainbow Trout, Salmo Gairdneri, to Low Environmental pH. Journal of Experimental Biology. https://doi.org/10.1242/jeb.88.1.109
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
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.
