CT max in brook trout (Salvelinus fontinalis) embryos shows an acclimation response to developmental temperatures but is more variable than in later life stages.

Autor: Lechner ER; Environmental and Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada., Stewart EMC; Environmental and Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada., Wilson CC; Ontario Ministry of Natural Resources and Forestry, Aquatic Research and Monitoring Section, Trent University, Peterborough, Ontario, Canada., Raby GD; Environmental and Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada.; Department of Biology, Trent University, Peterborough, Ontario, Canada.
Jazyk: angličtina
Zdroj: Journal of fish biology [J Fish Biol] 2024 Mar; Vol. 104 (3), pp. 901-905. Date of Electronic Publication: 2023 Dec 03.
DOI: 10.1111/jfb.15624
Abstrakt: Critical thermal maximum (CT max ) is widely used to measure upper thermal tolerance in fish but is rarely examined in embryos. Upper thermal limits generally depend on an individual's thermal history, which molds plasticity. We examined how thermal acclimation affects thermal tolerance of brook trout (Salvelinus fontinalis) embryos using a novel method to assess CT max in embryos incubated under three thermal regimes. Warm acclimation was associated with an increase in embryonic upper thermal tolerance. However, CT max variability was markedly higher than is typical for juvenile or adult salmonids.
(© 2023 The Authors. Journal of Fish Biology published by John Wiley & Sons Ltd on behalf of Fisheries Society of the British Isles.)
Databáze: MEDLINE
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