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About the Cover
Cover: One mechanism thought to be important in reducing evaporative water loss among large desert endotherms is heterothermy, the storage of body heat during the day, under positive thermal load, and dissipation of this heat at night. Data documenting this mechanism in free-living animals are scant. Using implanted data loggers in Arabian sand gazelles (Gazella subgutturosa marica), Ostrowski and Williams measured as much as a 5.5°C change in body temperature during one day, in summer, when thermal load was high (pp. 1421−1429). The effects of water deprivation and body mass on the usage of heterothermy are discussed. Photograph by Eric Bedin.
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