Table 1. Regional genetic diversity indices of Ciona robusta and C. intestinalis based on COX3-ND1 sequences (source: this study and Zhan et al. 25).
| Mean per population (±SD) |
Total per region |
|||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Code | Npop | Nind | Nh | Rh | Npr | Rpr | Hd | π (102) | Nind | Nh | Rh | Npr | Rpr | Hd | π (102) | |
| C. robusta | ||||||||||||||||
| North Western Pacific | NWP | 2 | 32.00 (0.00) | 6.50 (0.71) | 6.06 (0.48) | 0.50 (0.71) | 0.73 (0.22) | 0.790 (0.045) | 0.301 (0.057) | 64 | 9 | 8.98 | 1 | 1.18 | 0.792 | 0.301 |
| North Eastern Pacific | NEP | 10 | 20.50 (6.70) | 6.20 (1.48) | 5.33 (0.88) | 0.80 (1.14) | 0. 82 (0.84) | 0.766 (0.050) | 0.402 (0.098) | 213 | 22 | 15.48 | 16 | 4.46 | 0.814 | 0.419 |
| -North NEP | nNEP | 3 | 13.33 (4.51) | 5.00 (1.00) | 4.77 (0.78) | 0.33 (0.58) | 0.84 (0.73) | 0.777 (0.092) | 0.448 (0.162) | 40 | 16 | 16.00 | 2 | 3.81 | 0.837 | 0.457 |
| -South NEP | sNEP | 7 | 23.57 (4.89) | 6.71 (1.38) | 5.56 (0.87) | 1.00 (1.29) | 0.81 (0.94) | 0.775 (0.032) | 0.382 (0.065) | 173 | 9 | 5.51 | 12 | 3.35 | 0.775 | 0.393 |
| South Eastern Pacific | SEP | 4 | 17.50 (7.68) | 5.25 (2.06) | 5.36 (1.66) | 1.25 (0.50) | 1.05 (0.28) | 0.703 (0.111) | 0.253 (0.024) | 73 | 14 | 12.86 | 6 | 5.20 | 0.749 | 0.259 |
| -North SEP | nSEP | 2 | 24.00 (0.00) | 6.50 (2.12) | 6.35 (0.76) | 1.50 (0.71) | 0.97 (0.42) | 0.725 (0.056) | 0.266 (0.031) | 51 | 12 | 5.8 | 3 | 2.30 | 0.724 | 0.385 |
| -South SEP | sSEP | 2 | 11.00 (2.83) | 4.00 (1.41) | 4.37 (1.94) | 1.00 (0.00) | 1.13 (0.19) | 0.682 (0.178) | 0.241 (0.013) | 22 | 8 | 8.0 | 2 | 2.00 | 0.771 | 0.246 |
| English Channel | EC | 14 | 22.79 (3.31) | 1.93 (1.00) | 1.87 (0.97) | 0.50 (0.76) | 0.45 (0.59) | 0.129 (0.153) | 0.023 (0.028) | 320 | 13 | 6.41 | 10 | 1.67 | 0.138 | 0.025 |
| Mediterranean Sea | MedS | 2 | 22.00 (1.41) | 2.00 (1.41) | 1.68 (0.96) | 0.00 (0.00) | 0.10 (0.14) | 0.093 (0.132) | 0.017 (0.023) | 44 | 3 | 3 | 0 | 1.15 | 0.090 | 0.016 |
| Total | 714 | 45 | 0.703 | 0.334 | ||||||||||||
| C. intestinalis | ||||||||||||||||
| North Eastern Atlantic | NEA | 28 | 23.54 (1.69) | 10.68 (3.04) | 10.40 (2.94) | 2.89 (1.52) | 2.81 (1.42) | 0.815 (0.107) | 0.732 (0.253) | 659 | 126 | 44.45 | 119 | 21.19 | 0.854 | 0.815 |
| -English Channel | EC | 25 | 23.68 (1.68) | 11.24 (2.67) | 10.93 (2.59) | 3.00 (1.58) | 2.90 (1.48) | 0.839 (0.081) | 0.793 (0.189) | 592 | 117 | 43.36 | 110 | 20.79 | 0.870 | |
| -North Sea | NS | 3 | 22.33 (1.53) | 6.00 (1.73) | 5.93 (1.65) | 2.00 (0.00) | 2.04 (0.00) | 0.608 (0.067) | 0.223 (0.009) | 67 | 13 | 13.00 | 9 | 6.19 | 0.619 | 0.232 |
| North Western Atlantic | NWA | 16 | 30.06 (8.87) | 4.81 (1.83) | 4.14 (1.31) | 0.88 (0.96) | 0.83 (0.86) | 0.482 (0.188) | 0.241 (0.228) | 481 | 25 | 13.47 | 21 | 9.81 | 0.498 | 0.324 |
| Total | 1140 | 147 | 0.737 | 0.635 | ||||||||||||
For each region, per-population means and overall values for the region are given. Npop: number of populations; Nind: number of individuals; Nh: number of haplotypes; Rh: haplotypic richness (number of haplotypes corrected for sampling size); Npr: number of private haplotypes; Rpr: number of private haplotypes corrected for sampling size; Hd: haplotype diversity; π: nucleotide diversity. Genetic diversity indices per population are detailed in Supplementary Table S1. Study localities are shown in Fig. 2a for C. robusta and Fig. 2b for C. intestinalis.