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Fish heating tolerance scales similarly across individual physiology and populations


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Payne, NL, Morley, SA, Halsey, LG, Smith, JA, Stuart-Smith, R ORCID: 0000-0002-8874-0083, Waldock, C and Bates, AE 2021 , 'Fish heating tolerance scales similarly across individual physiology and populations' , Communications Biology, vol. 4, no. 1 , pp. 1-5 , doi: 10.1038/s42003-021-01773-3.

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Extrapolating patterns from individuals to populations informs climate vulnerability models, yet biological responses to warming are uncertain at both levels. Here we contrast data on the heating tolerances of fishes from laboratory experiments with abundance patterns of wild populations. We find that heating tolerances in terms of individual physiologies in the lab and abundance in the wild decline with increasing temperature at the same rate. However, at a given acclimation temperature or optimum temperature, tropical individuals and populations have broader heating tolerances than temperate ones. These congruent relationships implicate a tight coupling between physiological and demographic processes underpinning macroecological patterns, and identify vulnerability in both temperate and tropical species.

Item Type: Article
Authors/Creators:Payne, NL and Morley, SA and Halsey, LG and Smith, JA and Stuart-Smith, R and Waldock, C and Bates, AE
Keywords: physiology, climate change, SST, reef fish
Journal or Publication Title: Communications Biology
Publisher: Nature Publishing Group
ISSN: 2399-3642
DOI / ID Number: 10.1038/s42003-021-01773-3
Copyright Information:

© The Author(s) 2021. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons Attribution 4.0 International (CC BY 4.0) licence, ( and indicate if changes were made

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