Is physiological performance optimized by thermoregulatory behavior? A case study of the eastern fence lizard, Sceloporus undulatus

Michael J. Angilletta, Tracy Hill, Michael A. Robson

Research output: Contribution to journalArticle

155 Scopus citations

Abstract

Eastern fence lizards (Sceloporus undulatus) exhibit a distinct thermal preference that might be related to the thermal optimum for physiological performance. Sprint speed and treadmill endurance of S. undulatus were insensitive to body temperature in the ranges of 28-38°C and 25-36°C, respectively. Both locomotor and digestive performances are optimized at the preferred body temperature of S. undulatus, but thermoregulatory behavior is more closely related to the thermal sensitivity of digestive performance than that of locomotor performance.

Original languageEnglish (US)
Pages (from-to)199-204
Number of pages6
JournalJournal of Thermal Biology
Volume27
Issue number3
DOIs
StatePublished - Apr 22 2002
Externally publishedYes

Keywords

  • Body temperature
  • Coadaptation
  • Endurance
  • Sceloporus
  • Sprint speed
  • Thermal optimum
  • Thermal sensitivity

ASJC Scopus subject areas

  • Biochemistry
  • Physiology
  • Agricultural and Biological Sciences(all)
  • Developmental Biology

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