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. 2023 Apr 24;13:6673. doi: 10.1038/s41598-023-33646-6

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© The Author(s) 2023

Open Access 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Mean torpor bout duration (TBD) of pygmy-possums (Cercartetus nanus) as a function of ambient temperature (T_a). Mean TBD was strongly affected by T_a: y = 15.48–0.67 x; r² = 0.98. The mean TBD of other hibernators at the mean minimum T_b of hibernators (HIB blue dot, n = 70 species) and the mean TBD at the mean T_b of mammalian daily heterotherms (DH red dot, n = 50 species) are shown for comparison (data from⁶). The minimum T_b is shown on the T_a axis because the T_b-T_a differential is small during steady-state torpor.