Food and energy intake, non-shivering thermogenesis and daily rhythm of body temperature in the bushy-tailed gerbil Sekeetamys calurus: The role of photoperiod manipulations

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Abstract

1. The bushy-tailed gerbil, Sekeetamys calurus, is a nocturnal rock dwelling rodent inhabiting extremely arid zones in Arabia. The daily rhythms of body temperature (Tb), the daily food, energy and water consumption as well as heat production by means of non-shivering thermogenesis (NST), were compared in individual gerbils acclimated to two different photoperiod regimes 16L : 8D (LP) and 8L : 16D (LS) at the same ambient temperature (Ta) of 28°C. 2. The daily rhythms of Tb are entrained by photoperiod. Different patterns of these rhythms were evident under the different photoperiod regimes. A higher Tb was maintained for a longer period in LP-acclimated gerbils when compared with LS-gerbils. Food, energy and water intake as well as NST were significantly higher in LS-gerbils compared with LP-gerbils. 3. These results suggest that seasonal acclimatization of thermoregulatory mechanisms in the bushytailed gerbii can be partly induced by changes in photoperiod.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalJournal of Thermal Biology
Volume21
Issue number1
DOIs
StatePublished - 1996
Externally publishedYes

Keywords

  • Daily rhythms
  • Energy intake
  • Non-shivering thermogenesis
  • Photoperiod
  • Rodent
  • Thermoregulation

ASJC Scopus subject areas

  • General Agricultural and Biological Sciences
  • Physiology
  • Biochemistry
  • Developmental Biology

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