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. Author manuscript; available in PMC: 2016 Feb 15.
Published in final edited form as: Biol Rev Camb Philos Soc. 2014 Aug 15;90(3):891–926. doi: 10.1111/brv.12137

Fig. 5.

Fig. 5

A) Maximum torpor bout duration in relation to body mass. In mammalian daily heterotherms TBD slightly increased with body mass (log10duration=1.28+0.152 log10BM, t=2.56, P=0.013, R2=0.10). In mammalian hibernators maximum TBD was independent of body mass (P=0.968) and this was also the case for avian daily heterotherms (P=0.55). B) Maximum torpor bout duration in relation to absolute latitude of the species distribution centre. For mammalian daily heterotherms the regression was not significant (t=−0.49, P=0.621). Among mammalian hibernators maximum torpor bout duration increased with latitude (log10duration=1.985+0.0144 Latitude, t=5.05, P<0.0001, R2=0.12). There was no significant relationship in avian daily heterotherms (t=−0.73, P=0.471).