Effects of ambient temperature on metabolic rate, respiratory quotient, and torpor in an arctic hibernator.

@article{Buck2000EffectsOA,
  title={Effects of ambient temperature on metabolic rate, respiratory quotient, and torpor in an arctic hibernator.},
  author={C Loren Buck and Brian M. Barnes},
  journal={American journal of physiology. Regulatory, integrative and comparative physiology},
  year={2000},
  volume={279 1},
  pages={R255-62}
}
Arctic ground squirrels (Spermophilus parryii) overwinter in hibernaculum conditions that are substantially below freezing. During torpor, captive arctic ground squirrels displayed ambient temperature (T(a))-dependent patterns of core body temperature (T(b)), metabolic rate (TMR), and metabolic fuel use, as determined by respiratory quotient (RQ). At T(a) 0 to -16 degrees C, T(b) remained relatively constant, and TMR rose proportionally with the expanding gradient between T(b) and T(a… CONTINUE READING
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