Daily activity and behavioral thermoregulation of the guanaco (Lama guanicoe) in winter

摘要: We investigated daily activity and the effects of ambient conditions on that to determine behavioral mechanisms thermoregulation in guanaco (Lama guanicoe). Observations captive animals (an adult female, an male, a yearling male) show affect posture animals. These behaviors have effect closing "thermal windows" axillary flank regions, thus decreasing heat loss through radiation convection. When temperature (Ta) was between 0 10°C, used postural adjustments decrease area thermal windows 5-7% total surface area. At Ta > 10°C increased (up 22%) regulate below 0-1°C tended bed huddle together. Bedding huddling were only initiated by yearling. Another thermoregulatory behavior exhibited with their hindquarters into wind. ...