Table 1.
Sample summary information. (Map code numbers are represented in figure 1a. Sampling points = number of independent sampling points in each region; for complete information, see the electronic supplementary material, table S1. N, number of individuals; A, clade A absolute frequencies; B, clade B absolute frequencies.)
| sea basin | country | location | map code | N | A | B | sampling points |
|---|---|---|---|---|---|---|---|
| Baltic | Poland | Gdansk | 1 | 9 | 2 | 7 | 1 |
| Baltic | Germany | Kiel | 2 | 28 | 3 | 25 | 1 |
| Atlantic | Denmark | Denmark | 3 | 15 | 1 | 14 | 1 |
| Atlantic | Norway | Oslo | 4 | 24 | 2 | 22 | 1 |
| Atlantic | Scotland | Scotland | 5 | 35 | 6 | 29 | 2 |
| Atlantic | Germany | Germany | 6 | 11 | 1 | 10 | 1 |
| Atlantic | France | English Channel | 7 | 52 | 8 | 44 | 2 |
| Atlantic | France/Spain | Bay of Biscay | 8 | 336 | 170 | 166 | 11 |
| Atlantic | Spain | Galicia | 9 | 29 | 26 | 3 | 1 |
| Atlantic | Portugal | Portugal North | 10 | 93 | 81 | 12 | 2 |
| Atlantic | Portugal | Portugal South/Gulf of Cadiz | 11 | 236 | 212 | 24 | 5 |
| Atlantic | Spain | Canary islands | 12 | 82 | 76 | 6 | 2 |
| Atlantic | Senegal | Dakar | 13 | 34 | 32 | 2 | 1 |
| Atlantic | Guinea-Bissau | Guinea-Bissau | 14 | 20 | 20 | 0 | 1 |
| Atlantic | Ghana | Accra | 15 | 25 | 25 | 0 | 1 |
| Atlantic | Angola | Angola | 16 | 24 | 20 | 4 | 1 |
| Atlantic | Namibia | Namibia | 17 | 24 | 5 | 19 | 1 |
| Atlantic | South Africa | South Africa | 18 | 59 | 24 | 35 | 3 |
| Mediterranean | Spain | Alboran Sea | 19 | 115 | 106 | 9 | 2 |
| Mediterranean | Spain | Balearic Sea | 20 | 75 | 27 | 48 | 3 |
| Mediterranean | France | Gulf of Lion | 21 | 72 | 26 | 46 | 2 |
| Mediterranean | Italy | Livorno | 22 | 55 | 27 | 28 | 1 |
| Mediterranean | Tunisia | Tunis | 23 | 28 | 16 | 12 | 1 |
| Mediterranean | Italy | Adriatic Sea North | 24 | 114 | 12 | 102 | 2 |
| Mediterranean | Italy/Croatia | Adriatic Sea South | 25 | 188 | 31 | 157 | 4 |
| Mediterranean | Greece | Aegean Sea/ Ionian Sea | 26 | 967 | 598 | 369 | 12 |
| Mediterranean | Israel | Telaviv | 27 | 26 | 26 | 0 | 1 |
| grand total | 2776 | 1583 | 1193 | 66 |