Table S1 - Natural or Naturalized? Phylogeography Suggests That the Abundant Sea Urchin Arbacia lixula Is a Recent Colonizer of the Mediterranean

Haplotype frequencies of Arbacia lixula COI for all sampled localities. Haplotypes shared by two or more localities are represented in bold, while numbers not in bold correspond to private haplotypes. Background colours correspond to the three different haplogroups. Outgroups weights calculated by tcs are also displayed for each haplotype, and that with the highest outgroup weight (A2) is highlighted in green background. (XLS)