Fig. 2

Haplotype network of 28 rDNA-NTS sequences of P. marinus. Circle areas are proportional to the number of observed rDNA-NTS sequences for each haplotype. Perpendicular lines represent the mutational steps differentiating haplotypes, and small black circles indicate the inferred median (unsampled haplotypes). Colours correspond to collection site geographical location (see Fig. 1): a red and green haplotypes correspond to the states of Nayarit and Sinaloa, respectively, from the Pacific coast of Mexico, the yellow haplotype is from the state of Tabasco in the Gulf of Mexico. b grey and purple haplotypes correspond to the states of Veracruz and Tamaulipas, respectively. c red haplotypes correspond to the state of Nayarit on the Pacific coast of Mexico. Light blue and pink haplotypes correspond to P. marinus isolates from the USA