Table 6.
Summary statistics and demographic tests for each population from both species based on the mtDNA dataset (without putatively introgressed individuals). Codes are the same as in Table 1
| Species | Code | Habitat | COI + Cyt-b (without introgression) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N | S | h | hd | π | Fs | D | |||
| L. obtusata | 161 | 91 | 61 | 0.9540 | 0.0106 | −17.0139 | −0.6552 | ||
| USA | 18 | 6 | 7 | 0.5686 | 0.0006 | −5.4666 | −2.0342 | ||
| (1) oUS1 | NA | 10 | 4 | 5 | 0.6667 | 0.0007 | −2.8472 | − 1.6671 | |
| (2) oUS2 | NA | 8 | 2 | 3 | 0.4643 | 0.0004 | −0.9990 | − 1.3101 | |
| Northern-central Europe | 77 | 59 | 37 | 0.9586 | 0.0059 | −15.6860 | − 1.3508 | ||
| (3) oIC | NA | 10 | 22 | 8 | 0.9556 | 0.0056 | −1.2288 | −0.6478 | |
| (4) oSC | NA | 9 | 14 | 6 | 0.8889 | 0.0034 | −0.4382 | −0.9691 | |
| (5) oNO1 | Sheltered | 15 | 29 | 11 | 0.9048 | 0.0060 | −1.9701 | −0.8095 | |
| (6) oNO2 | Exposed | 3 | 11 | 3 | 1.0000 | 0.0061 | 0.8068 | 0.0000 | |
| (7) oSW1 | Sheltered | 12 | 16 | 6 | 0.8485 | 0.0055 | 1.7877 | 1.0411 | |
| (8) oSW2 | Exposed | 12 | 23 | 6 | 0.7576 | 0.0055 | 1.7877 | −0.6056 | |
| (9) oWA1 | Sheltered | 11 | 23 | 6 | 0.8364 | 0.0049 | 1.1593 | −1.1206 | |
| (10) oWA2 | Exposed | 5 | 13 | 2 | 0.4000 | 0.0043 | 4.9368 | −1.2104 | |
| Iberian Peninsula | 66 | 31 | 18 | 0.8555 | 0.0026 | −5.5098 | −1.6721 | ||
| (16) oSP3 | Sheltered | 34 | 15 | 10 | 0.6168 | 0.0011 | −4.8891 | −2.1043 | |
| (17) oPT1 | Sheltered | 32 | 17 | 8 | 0.8085 | 0.0023 | −0.1237 | −1.2001 | |
| L. fabalis | 116 | 50 | 35 | 0.9255 | 0.0053 | −10.1339 | −1.0146 | ||
| Northern-central Europe | 55 | 27 | 20 | 0.8936 | 0.0043 | −4.2237 | −0.4172 | ||
| (3) fIC | NA | 3 | 2 | 2 | 0.6667 | 0.0011 | 1.0609 | 0.0000 | |
| (5) fNO1 | Sheltered | 6 | 2 | 3 | 0.6000 | 0.0006 | −0.8584 | −1.1320 | |
| (6) fNO2 | Exposed | 4 | 9 | 2 | 0.8333 | 0.0038 | 1.3432 | −0.8294 | |
| (7) fSW1 | Sheltered | 3 | 10 | 2 | 0.6667 | 0.0056 | 3.4727 | 0.0000 | |
| (8) fSW2 | Exposed | 0 | – | – | – | – | – | – | |
| (9) fWA1 | Sheltered | 9 | 8 | 5 | 0.8889 | 0.0019 | −0.5590 | −1.0265 | |
| (10) fWA2 | Exposed | 9 | 6 | 5 | 0.8611 | 0.0025 | 0.0466 | 1.5659 | |
| (11) fIR | NA | 7 | 5 | 3 | 0.6667 | 0.0014 | 1.0142 | −0.7926 | |
| (12) fEN | NA | 6 | 7 | 3 | 0.6000 | 0.0019 | 1.3116 | −1.3903 | |
| (13) fFR | NA | 8 | 12 | 4 | 0.7857 | 0.0042 | 2.1986 | 0.4043 | |
| Iberian Peninsula | 61 | 25 | 15 | 0.8148 | 0.0018 | −5.5142 | −1.8661 | ||
| (14) fSP1 | Zostera-Sheltered | 14 | 8 | 6 | 0.6813 | 0.0011 | −2.2485 | −1.8766 | |
| (15) fSP2 | Fucus-Intermediate | 25 | 16 | 8 | 0.7800 | 0.0020 | −1.0832 | −1.5523 | |
| (18) fPT2 | Mastocarpus-Exposed | 22 | 1 | 2 | 0.5065 | 0.0004 | 1.4743 | 1.4714 | |
N, sample size; S, number of segregating sites; h, number of haplotypes; hd, haplotype diversity; π, nucleotide diversity; Fs, Fu’s Fs; D, Tajima’s D
Significant values after Bonferrni correction (p-value = 0.025, 0.010, 0.003 for species, regions and populations, respectively) are presented in bold