Table 2.
Percent time spent awake in 1-h bins in Lab M. musculus, wild M. musculus, and A. cahirinus over 24 h.
| Time intervals | Species | Male | Female | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Lab Mus | Wild Mus | Acomys | Lab Mus | Wild Mus | Acomys | Lab Mus | Wild Mus | Acomys | |
| Light | |||||||||
| 6:00–7:00 | 64.5 ± 8.8 | 34.2 ± 8.9** | 35.5 ± 3.5** | 69.7 ± 6.8 | 33.8 ± 7.7** | 34.4 ± 3.4** | 59.2 ± 7.4 | 34.6 ± 10.3** | 36.6 ± 3.2** |
| 7:00–8:00 | 52.5 ± 7.5 | 31.3 ± 9.4** | 28.8 ± 4.1** | 54.1 ± 7.1 | 28.3 ± 8.0** | 28.8 ± 4.0** | 50.8 ± 7.6 | 34.3 ± 10.2** | 28.9 ± 4.4** |
| 8:00–9:00 | 42.5 ± 5.9 | 32.1 ± 9.0** | 30.6 ± 3.5** | 42.4 ± 6.9 | 28.3 ± 7.9** | 30.7 ± 2.9** | 42.7 ± 4.8 | 35.9 ± 8.8 | 30.6 ± 4.1** |
| 9:00–10:00 | 37.8 ± 4.5 | 31.9 ± 8.3** | 31.8 ± 3.7** | 37.9 ± 4.3 | 26.8 ± 6.8** | 31.0 ± 3.4* | 37.7 ± 4.8 | 36.9 ± 6.5 | 32.7 ± 3.9 |
| 10:00–11:00 | 34.7 ± 4.5 | 28.9 ± 8.2** | 32.5 ± 4.3 | 33.7 ± 4.1 | 23.4 ± 5.9** | 31.7 ± 3.3+ | 35.7 ± 4.7 | 34.3 ± 6.4 | 33.4 ± 5.1 |
| 11:00–12:00 | 34.1 ± 5.1 | 27.0 ± 8.7** | 33.5 ± 4.0++ | 34.2 ± 5.0 | 21.9 ± 6.9** | 32.1 ± 2.8++ | 34.1 ± 5.4 | 32.1 ± 7.3 | 34.9 ± 4.7 |
| 12:00–13:00 | 36.2 ± 5.2 | 26.3 ± 9.3** | 34.8 ± 3.5++ | 36.0 ± 4.0 | 21.4 ± 6.7** | 33.5 ± 3.4++ | 36.4 ± 6.2 | 31.2 ± 9.2 | 36.1 ± 3.2 |
| 13:00–14:00 | 38.5 ± 6.7 | 26.7 ± 9.6** | 35.5 ± 3.1++ | 38.8 ± 6.4 | 24.6 ± 9.2** | 34.6 ± 2.6++ | 38.1 ± 7.2 | 28.8 ± 10.0 | 36.4 ± 3.4 |
| 14:00–15:00 | 39.9 ± 8.3 | 29.9 ± 14.2** | 37.0 ± 3.7++ | 40.8 ± 8.3 | 31.2 ± 17.6** | 35.2 ± 3.3 | 39.0 ± 8.3 | 28.6 ± 10.3** | 38.8 ± 3.2 |
| 15:00–16:00 | 43.8 ± 8.8 | 31.7 ± 14.8** | 37.0 ± 3.4**+ | 45.2 ± 10.3 | 32.3 ± 19.2** | 35.7 ± 2.7** | 42.5 ± 6.8 | 31.0 ± 9.5** | 38.3 ± 3.6 |
| 16:00–17:00 | 47.0 ± 7.9 | 36.5 ± 13.3** | 40.6 ± 4.6** | 50.1 ± 8.0 | 33.0 ± 15.0** | 42.3 ± 4.4**+ | 43.9 ± 6.4 | 40.0 ± 10.9 | 38.9 ± 4.2 |
| 17:00–18:00 | 61.0 ± 5.8 | 53.1 ± 14.0** | 62.9 ± 5.8++ | 62.6 ± 5.3 | 46.8 ± 13.3** | 63.3 ± 4.7++ | 59.5 ± 6.0 | 59.4 ± 12.0 | 62.5 ± 6.9 |
| Dark | |||||||||
| 18:00–19:00 | 84.7 ± 3.7 | 78.8 ± 8.6** | 90.8 ± 2.9**++ | 84.8 ± 3.9 | 74.9 ± 8.1** | 92.1 ± 2.5**++ | 84.5 ± 3.6 | 82.7 ± 7.4 | 89.5 ± 2.7 |
| 19:00–20:00 | 89.9 ± 4.4 | 92.7 ± 4.9 | 91.3 ± 3.8 | 90.2 ± 3.9 | 91.4 ± 5.4 | 92.9 ± 3.0 | 89.7 ± 5.0 | 93.9 ± 4.1 | 89.7 ± 3.9 |
| 20:00–21:00 | 86.6 ± 7.3 | 91.4 ± 6.7* | 78.3 ± 8.2**++ | 86.1 ± 7.4 | 89.9 ± 7.1 | 83.3 ± 5.5 | 87.1 ± 7.4 | 92.8 ± 6.3 | 73.2 ± 7.4**++ |
| 21:00–22:00 | 85.3 ± 6.8 | 88.0 ± 8.5 | 69.0 ± 7.0**++ | 85.3 ± 6.2 | 85.8 ± 9.6 | 69.3 ± 7.1**++ | 85.3 ± 7.5 | 90.3 ± 6.9 | 68.7 ± 7.1**++ |
| 22:00–23:00 | 82.8 ± 5.9 | 84.9 ± 10.4 | 63.3 ± 5.6**++ | 82.7 ± 5.4 | 81.8 ± 12.4 | 63.7 ± 4.8**++ | 83.0 ± 6.5 | 88.1 ± 7.1 | 62.9 ± 6.4**++ |
| 23:00–0:00 | 82.2 ± 6.4 | 84.5 ± 12.9 | 59.5 ± 5.6**++ | 82.1 ± 7.5 | 81.6 ± 15.9 | 59.8 ± 5.0**++ | 82.3 ± 5.1 | 87.4 ± 8.8 | 59.3 ± 6.3**++ |
| 0:00–1:00 | 82.7 ± 6.1 | 83.5 ± 11.0 | 58.8 ± 6.1**++ | 82.4 ± 6.6 | 81.1 ± 13.2 | 56.5 ± 5.3**++ | 82.9 ± 5.7 | 85.9 ± 8.2 | 61.2 ± 6.0**++ |
| 1:00–2:00 | 80.3 ± 6.8 | 77.9 ± 11.3 | 58.4 ± 7.9**++ | 79.7 ± 7.5 | 77.1 ± 12.4 | 55.3 ± 6.1**++ | 80.9 ± 6.1 | 78.7 ± 10.6 | 61.5 ± 8.5**++ |
| 2:00–3:00 | 76.5 ± 7.2 | 69.1 ± 11.2** | 57.5 ± 8.2**++ | 75.2 ± 8.4 | 72.3 ± 11.2 | 54.0 ± 7.3**++ | 77.8 ± 5.6 | 65.9 ± 10.8** | 61.0 ± 7.8** |
| 3:00–4:00 | 74.4 ± 6.6 | 60.3 ± 9.7** | 56.7 ± 8.3** | 73.8 ± 7.3 | 64.7 ± 8.4** | 53.2 ± 8.1**++ | 75.0 ± 6.0 | 56.0 ± 9.2** | 60.1 ± 7.1** |
| 4:00–5:00 | 72.5 ± 7.6 | 55.6 ± 7.8** | 54.2 ± 6.8** | 72.5 ± 7.2 | 57.6 ± 7.7** | 52.2 ± 7.1** | 72.5 ± 8.2 | 53.5 ± 7.7** | 56.2 ± 6.1** |
| 5:00–6:00 | 72.1 ± 8.0 | 46.0 ± 8.6** | 45.0 ± 5.6** | 76.0 ± 5.8 | 47.8 ± 8.0** | 44.0 ± 4.8** | 68.2 ± 8.1 | 44.2 ± 9.1** | 46.1 ± 6.3** |
Percentage of wake averaged for each hour of the day, by population and by sex. Both are nocturnal species, with percentage of wake increasing sharply at dark onset. Notably, A. cahirinus have high wake values (over 80%) for only two hours after dark onset LD 12:12. Values represent percentage mean ± SD.
*P < 0.05, **P < 0.01, SW Mus vs. Acomys or SW Mus vs. Wild Mus. +P < 0.05, ++P < 0.01, Acomys vs. Wild Mus.