Science Advances

Supplementary Materials

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  • Fig. S1. Temperature differentials for tegus (n = 11) held under constant temperature conditions (Ta = 18°C) indoors with and without a photoperiod plotted against days after transfer indoors (±SD, one direction, gray area).
  • Fig. S2. Mean (±SD) temperature differences (A) between tegu (Tb), skin (Ts), and ambient (Ta) temperature in a seminatural burrow (B), indoor chamber with (C-P) and without (C-NP) a photoperiod.
  • Fig. S3. Transient thermal changes in tegu lizards associated with photoperiod.
  • Fig. S4. Trace from a tegu in a natural enclosure during 3 days in January when it did not emerge out of its burrow.
  • Fig. S5. Average (±SEM) minimum daily HRs (that is, between 4:00 a.m. and 6:00 a.m.) as a function of body temperature in tegu lizards in seminatural outdoor enclosures.
  • Fig. S6. Thermal equilibrium curves from tegus that had previously warmed in the sun and then transferred themselves to their lower temperature burrows.

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