Food consumption does not affect the preferred body temperature of Yarrow's spiny lizard (Sceloporus jarrovi)

Matthew S. Schuler, Michael W. Sears, Michael J. Angilletta

Research output: Contribution to journalArticle

12 Scopus citations

Abstract

When animals consume less food, they must reduce their body temperature to maximize growth. However, high temperatures enhance locomotion and other performances that determine survival and reproduction. Therefore, thermoregulatory behaviors during different metabolic states reveal the relative importance of conserving energy and sustaining performance. Using artificial thermal gradients, we measured preferred body temperatures of male spiny lizards (Sceloporus jarrovi) in fed and fasted states. Both the mean and maximal body temperatures (33° and 35. °C, respectively) were unaffected by metabolic state. This finding suggests that the benefits of foraging effectively, evading predators, and defending territory outweigh the energetic cost of a high body temperature during fasting.

Original languageEnglish (US)
Pages (from-to)112-115
Number of pages4
JournalJournal of Thermal Biology
Volume36
Issue number2
DOIs
StatePublished - Mar 1 2011
Externally publishedYes

Keywords

  • Fasting
  • Feeding
  • Lizard
  • Postprandial
  • Preferred body temperature
  • Sceloporus jarrovi
  • Thermoregulation

ASJC Scopus subject areas

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

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