Daily rhythms of body temperature in acornys russatus: The response to chemical signals released by acomys cahirinus

Sason Fluxman, Abraham Haim

Research output: Contribution to journalArticlepeer-review

Abstract

Two species of spiny mice of the genus Acomys - the golden spiny A. russaturs and the common spiny A. cuhirinus - are syrnpatnc in the and and hot parts of the Rift Valley in Israel. The coexistence of these two species is due to exclusion of A. russatus mice by A. cuhirinus mice from nocturnal activity. The aim of this research was to study if odor signals released by A. cahirinus mice can play a role in the exclusion of A. russatus mice. A. russatus mice with an implanted transmitter recording body temperature (Tb) were kept alone in a metabolic chamber under constant conditions of ambient temperature (27°C) and photoperiod (12 h light: 12 h dark). After 5 days of recording, chemical signals from an A. cuhirinus mouse were added through the air tube going into the metabolic chamber of the A. russatus mice. This treatment caused a shift of ∼ 2 h inTb daily rhythm of the naive tested A. russutus mice, whereas no shift was observed in A. russatus mice that had been kept in the same room with the A. cahirinus mouse before measurements. These results strongly support the idea that chemical signals released by A. cahirinus mice can entrain the Tb rhythms of A. russatus mice. Therefore, it may be assumed that the exclusion of A. russatus mice from nocturnal activity by A. cuhirinus mice could be achieved through the odor released by the latter.

Original languageEnglish
Pages (from-to)159-164
Number of pages6
JournalChronobiology International
Volume10
Issue number3
DOIs
StatePublished - 1993
Externally publishedYes

Keywords

  • Arid environment
  • Coexistence
  • Competitive exclusion
  • Diurnal rodents
  • Phase shift

ASJC Scopus subject areas

  • Physiology (medical)
  • Physiology

Fingerprint

Dive into the research topics of 'Daily rhythms of body temperature in acornys russatus: The response to chemical signals released by acomys cahirinus'. Together they form a unique fingerprint.

Cite this