Skip to main content

Table 1 Divergence times

From: Climate-driven diversification in two widespread Galerida larks

Node Divergence event Bootstrap Divergence time 2%/MY Climatic event Divergence time 1.5%/MY Divergence time 2.5%/MY
1 species of crested/sp. of Thekla 83, 92, 93 4.96 [3.86–6.09] / 6.61 [5.15–8.12] 3.97 [3.09–4.87]
2 Ethiopian/Palearctic Thekla 94, 98,100 2.81 [2.11–3.56] Aridification 2.8 ± 0.2 3.75 [2.81–4.75] 2.25 [1.69–2.85]
3 ellioti/praetermissa 84, 69, 82 1.83 [1.23–2.43] Aridification 1.7 ± 0.1 2.44 [1.64–3.24] 1.46 [0.98–1.94]
4 hueii/praetermissa 82,82,80 1.08 [0.55–1.65] Aridification 1.0 ± 0.2 1.44 [0.73–2.20] 0.86 [0.44–1.32]
5 Div. within G. theklae * 98,100,100 0.15 [0.03–?] Glacial cycles < 0.9 0.20 [0.04–?] 0.12 [0.02–?]
6 Div. 3 species crested larks 100,100,98 1.77 [1.15–2.46] Aridification 1.7 ± 0.1 2.36 [1.53–3.28] 1.42 [0.92–1.97]
7 Div. within G. randonii 100,99,93 / / / /
8 Div. within G. cristata * 99,89,75 0.39 [0.07– ?] Glacial cycles < 0.9 MYA 0.52 [0.09–?] 0.31 [0.06–?]
9 Div. within G. c. cristata 93,80,80 / / / /
10 Div. within G. c. somaliensis 85,96,94 / / / /
  1. Bootstrap support (NJ, MP, ML) and estimates of divergence times in million years ago (using BEAST or MDIV – latter indicated with * -) derived for various nodes of the mitochondrial phylogeny (shown in Fig. 2) using the standard molecular clock of 2% per million year [95% credibility interval]. Possible coincidence with some climatic events in MYA (after [21]) is indicated, as well as modified estimates derived from slightly different molecular clocks (1.5 to 2.5%/MY; see additional file 1b for further details).