Figure 2. Genetic assignment of octopus samples from fishing localities in Northwest Mexico to three species.

Locations used for both 16s rDNA and COI are indicated with stars (ê). All locations were used for microsatellites analysis. (A) Neighbor-joining trees constructed with 97 haplotypes for both 16s rDNA and COI for O. bimaculatus (blue), O. bimaculoides (purple) and O. hubbsorum (orange). Bootstrap support >99% in 1,000 replicates are shown for branches separating the three species. (B) Bayesian clustering analysis from STRUCTURE showing the probability of individual membership to three genetic clusters (K = 3, 316 individuals). (C) Distribution of octopus species in 20 localities from Northwest Mexico according to phylogenetic and clustering analyses.