Acute warming tolerance (CT max ) in zebrafish ( Danio rerio ) appears unaffected by changes in water salinity.

Autor: Åsheim ER; Institute of Biotechnology, Helsinki Institute of Life Science (HiLIFE), University of Helsinki, Helsinki, Finland.; Organismal and Evolutionary Biology Research Programme, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland.; Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway., Andreassen AH; Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway., Morgan R; Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.; Department of Biological Sciences, University of Bergen, Bergen, Norway., Silvestre M; Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway., Jutfelt F; Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.; Department of Biological and Environmental Sciences, Faculty of Science, University of Gothenburg, Gothenburg, Sweden.
Jazyk: angličtina
Zdroj: PeerJ [PeerJ] 2024 Jun 26; Vol. 12, pp. e17343. Date of Electronic Publication: 2024 Jun 26 (Print Publication: 2024).
DOI: 10.7717/peerj.17343
Abstrakt: Tolerance against acute warming is an essential trait that can determine how organisms cope during heat waves, yet the mechanisms underlying it remain elusive. Water salinity has previously been suggested to modulate warming tolerance in fish and may therefore provide clues towards these limiting mechanisms. Here, using the critical thermal maximum (CT max ) test, we investigated whether short (2 hours) and long (10 days) term exposure to different water salinities (2 hours: 0-5 ppt, 10 days: 0-3 ppt) affected acute warming tolerance in zebrafish ( N  = 263). We found that water salinity did not affect the warming tolerance of zebrafish at either time point, indicating that salinity does not affect the mechanism limiting acute warming tolerance in zebrafish at these salinity ranges, and that natural fluctuations in salinity levels might not have a large impact on acute warming tolerance in wild zebrafish.
Competing Interests: The authors declare there are no competing interests.
(©2024 Åsheim et al.)
Databáze: MEDLINE