Table 3.
Mean divergence-time estimates (in Ma) and 95% confidence intervals from BEAST analyses using different tree models
| Tree model | root | Amphipsalta-Notopsalta | Amphipsalta | N. sericea MRCA | A. strepitans MRCA | A. zelandica MRCA | A. cingulata MRCA |
|---|---|---|---|---|---|---|---|
| Yule |
4.82 (3.87-5.69) |
3.70 (2.95-4.49) |
2.97 (2.42-3.56) |
1.01 (0.64-1.39) |
0.84 (0.60-1.11) |
0.39 (0.26-0.54) |
0.23 (0.13-0.34) |
| birth-death |
24.45 (14.86-38.10) |
12.59 (7.6-17.2) |
9.22 (5.75-12.82) |
1.36 (0.70-2.06) |
1.16 (0.66-1.70) |
0.37 (0.19-0.56) |
0.16 (0.06-0.27) |
| coalescent (constant) |
17.43 (11.11-23.97) |
8.21 (5.67-10.69) |
5.91 (4.04-7.61) |
1.28 (0.75-1.87) |
1.07 (0.65-1.44) |
0.39 (0.22-0.59) |
0.18 (0.08-0.28) |
| coalescent (expansion) | 17.00 (10.70-23.42) | 8.13 (5.64-10.35) | 5.85 (4.20-7.59) | 1.26 (0.77-1.89) | 1.07 (0.68-1.52) | 0.39 (0.23-0.59) | 0.18 (0.08-0.30) |
Estimates of interspecific divergence times were strongly influenced by the tree prior, while ages of species’ MRCAs and intraspecific divergences varied much less.