Responses of brook trout (Salvelinus fontinalis) fry to fluctuating acid, aluminum, and low calcium exposure

D. R. Mount, M. J. Swanson, J. E. Breck, A. M. Farag, H. L. Bergman

Research output: Contribution to journalArticle

17 Scopus citations

Abstract

Brook trout fry were exposed for 30d to temporal combinations of 2 water qualities: 1) pH 5.21, 51 μg/L total Al with 2.39 mg/L Ca (baseline); and 2) pH 4.59, 329 μg/L total Al, with 1.56 mg/L Ca (pulse). Although continuous exposure to the latter conditions caused nearly complete mortality, exposures alternating between the 2 conditions caused much less mortality. Fish experiencing 18 d of baseline conditions before their first pulse exposure had mortality rates equal to fish never experiencing a pulse, indicating acclimation to acid/Al/low Ca stress. -from Authors

Original languageEnglish (US)
Pages (from-to)1623-1630
Number of pages8
JournalCanadian Journal of Fisheries and Aquatic Sciences
Volume47
Issue number8
DOIs
StatePublished - Jan 1 1990

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