Table 2. Hierarchical analysis of molecular variance for Ciona robusta and C. intestinalis.
| Fixation index | COX3-ND1 dataset | Concatenated dataset | |||
|---|---|---|---|---|---|
| C. robusta | Groups | NWP, NEP, SEP, EC and MedS | NWP, SEP, EC and MedS | ||
| ϕCT | 0.497 | (P < 0.001) | 0.504 | (P < 0.001) | |
| ϕSC | 0.083 | (P < 0.001) | 0.005 | (P = 0.084) | |
| ϕST | 0.539 | (P < 0.001) | 0.507 | (P < 0.001) | |
| C. intestinalis | Groups | NWA, EC and NS | EC and NS | ||
| ϕCT | 0.154 | (P < 0.001) | 0.125 | (P < 0.001) | |
| ϕSC | 0.035 | (P < 0.001) | 0.071 | (P < 0.001) | |
| ϕST | 0.140 | (P < 0.001) | 0.147 | (P < 0.001) | |
Analyses were done using the COX3-ND1 dataset and the concatenated mtDNA dataset. ϕCT, ϕSC and ϕST refer to the fixation index measuring genetic differences among areas, among populations within areas and among all populations, respectively. Probability values (H0: ϕ = 0) are indicated in brackets.