Fig. 2

a Distribution map of Mytilus galloprovincialis CO1 sequences: 1—South Africa, 2—Northwest Pacific (NP) China, 3—South China, 4—Greece, 5—Chile, 6—Portugal, 7—Spain, 8—Australia East, 9—Australia West, 10—New Zealand (Auckland Islands), 11—Tasmania, 12—Turkey, 13—British Columbia (Vancouver Island), 14—Korea (South). Map Credit: Reto Stöckli, NASA Earth Observatory. b Haplotype network for Mytilus galloprovincialis based on mtDNA—CO1 sequence data. Size of circles is representative of individuals with that haplotype. The smallest circles represent a haplotype frequency of one. Each connecting line between haplotypes represents one mutational step and perpendicular lines represent an additional mutational change. Dashed circles indicate distinct haplogroups