Figure 1

Diplosoma listerianum distribution.
Left: Sampling locations of D. listerianum. The grey shadow indicates known distribution of the species, pie charts on the map represent clade frequencies for each locality and pie size is proportional to sample size. AN: Antofagasta, Chile; AR: Arenys, Spain; BA: Bastimentos Island, Panama; BO: Bocas del Toro, Panama; CA: Bodega Bay, California; CO: Coquimbo, Chile; CT: Cape Town, South Africa; HB: Hout Bay, South Africa; JA: Misaki, Japan; PA: Port Alfred, South Africa; PL: Plymouth, UK; SA: Santander Bay, Spain; MB: Melbourne Bay, Australia; WAS: Snog Harbour, Washington. Right: Haplotype frequencies of clade A for the 11 populations analysed. White haplotypes represent private haplotypes and black ones represent haplotypes shared with populations which have not been considered for population genetics analyses. Dashed arrows suggest the most likely way of spreading. This map has been created by R.P.-P. in Adobe Illustrator CS3 Software.