Table 1.
Body mass (m b), basal metabolic rate (BMR), facultative non-shivering thermogenesis (fNST) and minimum thermal conductance (C) of Siberian hamsters, Phodopus sungorus randomly assigned to control groups (N = 5 or N = 4 in winter and summer, respectively) which were maintained in constant T a during winter (10 °C) and summer (20 °C) experiments
| Season | Trait | Acclimation | χ 2 | P | ||
|---|---|---|---|---|---|---|
| Initial | First | Second | ||||
| Winter | m b (g) | 31.71 ± 4.51 | 29.67 ± 4.89 | 27.87 ± 4.68 | 9.42 | <0.001* |
| BMR (W) | 0.25 ± 0.04 | 0.22 ± 0.03 | 0.24 ± 0.03 | 2.50 | 0.367 | |
| fNST (W) | 1.38 ± 0.33 | 1.05 ± 0.23 | 1.32 ± 0.19 | 7.12 | 0.024* | |
| C (mW °C−1 cm−2) | 0.24 ± 0.06 | 0.28 ± 0.01 | 0.25 ± 0.02 | 1.35 | 0.522 | |
| Summer | m b (g) | 39.48 ± 1.75 | 40.55 ± 1.89 | 41.48 ± 2.05 | 1.65 | 0.431 |
| BMR (W) | 0.28 ± 0.04 | 0.26 ± 0.04 | 0.26 ± 0.05 | 3.06 | 0.273 | |
| fNST (W) | 0.88 ± 1.00 | 1.07 ± 0.17 | 1.03 ± 0.29 | 1.65 | 0.431 | |
| C (mW °C−1 cm−2) | 0.25 ± 0.05 | 0.22 ± 0.04 | 0.21 ± 0.03 | 1.65 | 0.431 | |
Values were compared using Friedman repeated measures test with Wilcoxon pairwise test for post hoc comparisons. Values are presented as mean ± SD, χ2—value of the test statistics
* Post hoc comparisons showed differences between means at 0.1 > P > 0.05