Figure 2
Location of the study populations and haplotype frequencies (COX3-ND1) at the population level for C. robusta (A) and C. intestinalis (B). Sites of Ciona robusta (A) and of Ciona intestinalis (B) sampled for this study are indicated in black and bold (for population codes and sampling, see Table S1). The localities studied by Zhan and co-authors25 that are included in the present study are in grey and underlined. Each color in pie charts refers to a given haplotype (see haplotype name in the box) as defined in the network in Fig. 3ab for C. robusta and C. intestinalis, respectively. The haplotypes with a name followed by an asterisk are shared between at least two regions. For sake of clarity, only the haplotypes shared between regions or with frequency higher than 0.1 at population level are shown wth a specific color for C. intestinalis. Maps were obtained from http://www.pedagogie.ac-aix-marseille.fr/jcms/c_67064/fr/cartotheque under the permission of the creator (Daniel Dalet©Académie Aix-Marseille).
