Changes in Pattern of Heat Loss at High Ambient Temperature Caused by Water Deprivation in a Large Flightless Bird, the Emu

  title={Changes in Pattern of Heat Loss at High Ambient Temperature Caused by Water Deprivation in a Large Flightless Bird, the Emu},
  author={Shane K. Maloney and Terence J Dawson},
  journal={Physiological Zoology},
  pages={712 - 719}
When exposed to high ambient temperatures, birds defend body temperature by increasing evaporative water loss, via either respiratory or cutaneous water loss. Water deprivation can lead to changes in thermal responses and lower levels of water use for thermoregulation. We have studied the effect of 2–3 wk of water deprivation on the physiological responses of emus during exposure to an ambient temperature of 45°C. Water deprivation led to a delay in the onset of panting (54 vs. 24 min after… 
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