Haplotype networks with nested clade design for mtDNA (COI & COII) sequence data of Limay, Negro and Neuquen Rivers.

<p>Haplotype circle size is proportional to its frequency. Each haplotypes is numbered. Haplotypes that exceed twenty individuals are labeled with the total number of individuals of that haplotype. Arrow indicates the root haplotype. Black empty circles represent extinct (or unsampled) haplotypes. Color codes indicate the six major rivers.