Non-shivering thermogenesis in common spiny mice Acomys cahirinus from adjacent habitats: Response to seasonal acclimatization and salinity acclimation

Michael Scantlebury, Uri Shanas, Hagai Kupshtein, Daniel Afik, Abraham Haim

Research output: Contribution to journalArticlepeer-review

Abstract

1. We compared resting metabolic rate (RMR) and non-shivering thermogenesis (NST) values between founder and F1-populations of winter-acclimatized Acomys cahirinus that originated from north- and south-facing slopes (NFS and SFS) of the same valley, representing mesic and xeric habitats. 2. NST was measured by the increase in oxygen consumption (VO2) and body temperature (Tb) after a noradrenaline (NA) injection (VO2 NA, TbNA). 3. Body mass and TbNA values were higher in SFS F1-mice, while RMR and VO2 NA values were higher in NFS F1-mice. Differences were not apparent in founders. 4. Results are consistent with NFS and SFS mice being considered as "heat producers" and "heat conservers", respectively.

Original languageEnglish
Pages (from-to)287-293
Number of pages7
JournalJournal of Thermal Biology
Volume28
Issue number4
DOIs
StatePublished - May 2003
Externally publishedYes

Bibliographical note

Funding Information:
We would like to thank Alina Neuman and Udi Ron for their assistance in the lab and field. This work was supported in part by grants from the Israel Science Foundation, Israel Academy of Science and Humanities to AH and DA (298/97-2) and from the Royal Society (SV/ISR/NVB) and British Ecological Society (SEPG-1878) to MS.

Keywords

  • Body temperature
  • Energy expenditure
  • Evolution
  • Noradrenaline
  • Resting metabolic rate
  • Rodents

ASJC Scopus subject areas

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

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