Table 2 Characteristics of body temperature (Tb) rhythms in captive bears during winter dormancy
From: The bear circadian clock doesn’t ‘sleep’ during winter dormancy
CAPTIVE | ||||
|---|---|---|---|---|
DD All [9] | DD Juvenile [5] | DD Adult [4] | Ambient [1] | |
Average Tb (°C) | 34.4 ± 0.1 | 34.4 ± 0.1 | 34.3 ± 0.1 | 33.7 |
Min (°C) | 31.7 ± 0.5 | 31.9 ± 0.9 | 31.5 ± 0.3 | 30.1 |
Max (°C) | 36.3 ± 0.2 | 36.1 ± 0.3 | 36.5 ± 0.4 | 35.7 |
Period (h) | 23.9 ± 0.09 | 23.8 ± 0.07a | 24 ± 0.07 | 24 |
Acrophase (h) | 17.8 ± 0.96 | 19.4 ± 1.8 | 15.3 ± 1.47 | 12.6 |
Strength (%) | 66 ± 6 | 64 ± 10 | 68 ± 5 | 53 |
Variability (h) | 1.3 ± 0.07 | 1.2 ± 0.08 | 1.5 ± 0.02 | 1.4 |
Amplitude (°C) | 0.37 ± 0.03 | 0.4 ± 0 .03 | 0.4 ± .05 | 0.4 |