Temperature effects on bioenergetics of growth, assimilaton efficiency and thyroid activity in juvenile varand lizards

Rochelle Buffenstein, Gideon Louw

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

When varanid lizards, Varanus niloticus, were allowed to select their preferred body temperature (c. 34°C) they exhibited swifter growth, larger food intake and superior efficiency of conversion when compared with animals restricted to a maximum body temperature of 24°C. At the higher temperature the animals also exhibited a higher metabolic rate and increased thyroid activity, while those at the lower temperature lostproportionately more energy via respiration. A complete energy budget over a period of 6 weeks is presented.

Original languageEnglish (US)
Pages (from-to)197-200
Number of pages4
JournalJournal of Thermal Biology
Volume7
Issue number4
DOIs
StatePublished - Dec 1982

Keywords

  • Temperature
  • Varanus niloticus
  • assimilation efficiency
  • conversion efficiency
  • fat bodies
  • food intake
  • growth
  • metabolic rate
  • reptilian skin
  • thyroid function
  • varanid lizards

ASJC Scopus subject areas

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

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