Altitudinal divergence in maternal thermoregulatory behaviour may be driven by differences in selection on offspring survival in a viviparous lizard.

@article{Uller2011AltitudinalDI,
  title={Altitudinal divergence in maternal thermoregulatory behaviour may be driven by differences in selection on offspring survival in a viviparous lizard.},
  author={Tobias M Uller and Geoffrey M While and Chlo{\'e} D Cadby and Anna Harts and Katherine B O'Connor and Ido Pen and Erik Wapstra},
  journal={Evolution; international journal of organic evolution},
  year={2011},
  volume={65 8},
  pages={
          2313-24
        }
}
Plastic responses to temperature during embryonic development are common in ectotherms, but their evolutionary relevance is poorly understood. Using a combination of field and laboratory approaches, we demonstrate altitudinal divergence in the strength of effects of maternal thermal opportunity on offspring birth date and body mass in a live-bearing lizard (Niveoscincus ocellatus). Poor thermal opportunity decreased birth weight at low altitudes where selection on body mass was negligible. In… CONTINUE READING

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