Table 1. Geographic information and summary statistics of the sampled populations.
| Region | Site | GPS position | Population type | N | He | Na | AR | Fis | R |
| Locquirec | Porz Mellec1 | 48°41′11″N 3°37′06″W | Marginal | 19 | 0.518±0.066 | 3.71±0.47 | 3.71±0.47 | –0.019±0.045 | 1.00 |
| Beg Douar | 48°41′12″N 3°36′47″W | Marginal | 31 | 0.519±0.052 | 4.14±0.55 | 3.82±0.44 | 0.033±0.035 | 1.00 | |
| Mean | 0.518±0.000 | 3.93±0.21 | 3.77±0.05 | 0.007±0.026 | 1.00 | ||||
| Roscoff | Ar Pourven | 48°42′44″N 3°57′30″W | Central | 49 | 0.614±0.070 | 6.14±1.71 | 5.31±1.41 | 0.013±0.030 | 1.00 |
| Sieck1 | 48°42′40″N 4°03′37″W | Central | 41 | 0.629±0.070 | 7.14±1.74 | 6.03±1.31 | –0.019±0.029 | 1.00 | |
| Duons | 48°43′41″N 3°55′32″W | Central | 45 | 0.611±0.076 | 6.57±1.38 | 5.29±1.02 | 0.068±0.041 | 1.00 | |
| Mean | 0.618±0.005 | 6.62±0.29 | 5.54±0.24 | 0.021±0.026 | 1.00 | ||||
| Porspoder | St Laurent | 48°31′11″N 4°46′45″W | Central | 27 | 0.676±0.046 | 7.00±1.20 | 6.44±1.03 | –0.011±0.025 | 1.00 |
| Le Conquet2 | 48°19′48″N 4°46′25″W | Central | 27 | 0.671±0.061 | 6.71±1.80 | 6.22±1.57 | 0.067±0.048 | 1.00 | |
| Molène2 | 48°23′49″N 4°56′01″W | Central | 20 | 0.695±0.043 | 6.43±1.15 | 6.35±1.14 | 0.085±0.054 | 1.00 | |
| Mean | 0.681±0.007 | 6.71±0.17 | 6.33±0.07 | 0.047±0.030 | 1.00 | ||||
| Quiberon | Pointe ConguelSouth | 47°28′09″N 3°05′40″W | Marginal | 41 | 0.495±0.072 | 4.29±0.94 | 3.87±0.77 | 0.071±0.047 | 0.95 |
| Pointe deConguel North | 47°28′12″N 3°05′29″W | Marginal | 49 | 0.555±0.058 | 5.43±0.90 | 4.42±0.68 | 0.049±0.029 | 1.00 | |
| Belle-Ile | 47°19′41″N 3°07′27″W | Marginal | 47 | 0.474±0.067 | 4.29±0.61 | 3.72±0.44 | 0.027±0.045 | 0.98 | |
| Mean | 0.508±0.024 | 4.67±0.38 | 4.00±0.21 | 0.049±0.013 | 0.98 |
N is the number of individuals sampled, He is the unbiased genetic diversity [41], Na is the number of alleles, AR is the allelic richness based on the smallest sample size (19 diploid individuals), Fis is the departure from random meeting [43] and R is the genotypic diversity ((G−1/N−1, where G is the number of distinct genotypes, [44]). He, Na, AR and Fis have been calculated using FSTAT [42]; values by population are mean ± standard error over loci and values by region are mean ± standard error over populations.
These sites have already been analyzed in Valero et al. 2011 [35] (Sieck = NB3, Porspoder = NB1 and Porz Mellec = NB4); values might slightly differ because of different sub-sampling in the two analysis.
These sites have already been analyzed in Couceiro et al. 2013 [36] (Le Conquet = MPA2 and Molène = MPA1); values might slightly differ because of different sub-sampling in the two analysis.