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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Comp Biochem Physiol Part D Genomics Proteomics. 2011 Mar 5;6(2):163–170. doi: 10.1016/j.cbd.2011.02.003

Fig. 1.

Fig. 1

Body temperature of a 13-lined ground squirrel over a year. Note summer homeothermy and winter heterothermy where animals cycle between torpor and spontaneous arousals to euthermia (interbout arousal, IBA). Animals in this study (arrows) were re-entering torpor (Ent) after an IBA, or SA in August. Other stages mentioned in the text are noted with arrowheads including three unique to Shao et al.(2010): PR, post-reproductive; LT, late torpor; and EA, early in the interbout arousal.