Table 1.
Percent active Ramazzottius varieornatus following exposure of desiccated tun state to temperatures between 23°C and 70°C. The tuns were pooled into 5 groups of ca. 20 specimens (i.e. ca. 100 tuns per temperature) and exposed to high temperatures for 1 week or 24 hours (the latter data are from Neves et al. 2020 [18]). Scoring of activity was performed on fully hydrated tardigrades, 2 hours, 24 hours and 48 hours after heat shock. Data are presented as mean±se percent active tardigrades.
| Temperature → Exposure time ↓ |
RT* Ctrl** |
40ºC | 50ºC | 55ºC | 60ºC | 65ºC | 70ºC |
|---|---|---|---|---|---|---|---|
| 1 week |
2 h: 99.0 ± 1.0 24 h: 99.1 ± 0.9 48 h: 96.3 ± 1.7 |
2 h: 96.3 ± 1.7 24 h: 97.2 ± 1.1 48 h: 98.2 ± 1.8 |
2 h: 89.8 ± 3.6 24 h: 92.6 ± 3.1 48 h: 90.7 ± 3.3 |
2 h: 55.6 ± 5.2 24 h: 81.7 ± 3.3 48 h: 86.4 ± 3.5 |
2 h: 0.0 ± 0.0 24 h: 1.9 ± 1.2 48 h: 0.0 ± 0.0 |
2 h: 0.0 ± 0.0 24 h: 0.0 ± 0.0 48 h: 0.0 ± 0.0 |
|
| 24 hours*** |
2 h: 97.0 ± 2.0 24 h: 97.0 ± 2.0 48 h: 97.0 ± 1.2 |
2 h: 97.9 ± 1.3 24 h: 99.0 ± 1.0 48 h: 98.1 ± 1.2 |
2 h: 96.1 ± 1.8 24 h: 94.1 ± 1.8 48 h: 91.1 ± 1.9 |
2 h: 93.9 ± 1.9 24 h: 92.9 ± 2.5 48 h: 92.9 ± 2.5 |
2 h: 8.0 ± 6.8 24 h: 27.7 ± 10.0 48 h: 37.6 ± 13.5 |
2 h: 0.0 ± 0.0 24 h: 0.0 ± 0.0 48 h: 0.0 ± 0.0 |
*RT = ca. 23ºC **Ctrl = control ***Data from Neves et al. 2020 [18]