FIGURE 2 in Phylogeography of Oligosarcus acutirostris (Characiformes: Characidae): testing biogeographic hypotheses in the Northeastern Mata Atlântica freshwater ecoregion

FIGURE 2 | A. Map showing part of the Northeastern Mata Atlântica freshwater ecoregion (NMAF) and the distribution of Oligosarcus acutirostris samples analyzed in this study. Adjacent freshwater ecoregions sensu Abell et al. (2008): (327) São Francisco, (329) Paraíba do Sul, and (344) Upper Paraná. Costal paleodrainages based on Thomaz, Knowles (2018): (107) Santo Antônio + João de Tiba and (110) Mucuri + Barra Seca; B and C. Haplotype networks showing the genetic connectivity among the haplotypes of O. acutirostris, which are represented by circles, the size proportional to their frequencies. Each trace corresponds to a single mutation. Colors correspond to the sampled river basins as in Fig. 2A; B. Haplotype network based on COI dataset (604 bp, 24 specimens, 11 haplotypes). Black circles represent median vectors; C. Haplotype network based on Myh6 dataset (587 bp, 27 specimens, five haplotypes).