Table 2. Site frequency tests of interpopulation genetic structure, gene flow and neutrality at Pgi.
| Fst | Nm | Sfixed | Spolymorphic | NSfixed | NSpolymorphic | MK p-value | |
| Northern Clade vs. Playa Altamira | n/a | n/a | 86 | 39 | 26 | 47 | 0.000*** |
| Southern Clade vs. Playa Altamira | n/a | n/a | 83 | 61 | 23 | 37 | 0.014* |
| Northern vs. Southern Clade | 0.68 | 0.12 | 1 | 95 | 0 | 82 | 1 |
| Pescadero vs. Site 10 | 0.043 | 5.6 | 0 | 17 | 0 | 30 | n/a |
| Pescadero vs. Santa Cruz | 0.122 | 1.8 | 0 | 24 | 0 | 35 | n/a |
| San Diego vs. Long Beach | 0.386 | 0.4 | 2 | 19 | 0 | 25 | 0.203 |
FST among-population genetic differentiation; Nm gene flow rate between populations; S number of segregating sites; NS number of non-synonymous sites; MK McDonald-Kreitman neutrality test.