Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1973381 | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology | 2008 | 6 Pages |
Abstract
We compared body temperature (Tb) and metabolic rates, measured as oxygen consumption (VO2), daily rhythms of two sibling species of the genus Mastomys. We also studied their responses to long day (16L: 8D, LD) and short day (8L: 16D, SD) photoperiod manipulations at a constant ambient temperature of 26 + 1 °C. We noted significant differences in Tb and VO2 daily rhythm patterns, under SD and LD-acclimation between the sibling species. These differences explain adaptation to the climatic conditions that prevail in the different ecosystems where these species live. To the best of our knowledge, this is the first time that physiological differences between the two siblings are measured by using chronobiological methods.
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Authors
Abraham Haim, Abed Elsalam Zubidat, Rudi J. van Aarde,