Seasonal acclimatization in the migratory hamster Cricetulus migratorius-the role of photoperiod

A. Haim, J. J. Martinez

Research output: Contribution to journalArticlepeer-review

Abstract

1. 1.|The migratroy hamster Cricetulus migratorius, a small nocturnal rodent, inhabits ecosystems characterized by dramatic seasonal fluctuations of ambient temperatures. The aim of this study was to assess seasonal acclimatization of its thermoregulatory system. 2. 2.|Heat production by means of oxygen consumption and body temperature in various ambient temperatures as well as non-shivering thermogenesis were measured in C. migratorius. The hamsters were acclimated to two different photoperiod regimes (16L:8D and 8L:16D) at a constant ambient temprature of 24°C. Overall thermal conductance was calculated for such hamsters. 3. 3.|The results of this study indicate that photoperiod manipulations adjust the thermoregulatory system of the migratory hamster mainly by affecting overall thermal conductance.

Original languageEnglish
Pages (from-to)347-351
Number of pages5
JournalJournal of Thermal Biology
Volume17
Issue number6
DOIs
StatePublished - Nov 1992

Keywords

  • Acclimatization
  • body temperature
  • Cricetulus migratorius
  • hamster
  • heat production
  • NST
  • photoperiod

ASJC Scopus subject areas

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

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