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Figure 4 | BMC Evolutionary Biology

Figure 4

From: Population history, phylogeography, and conservation genetics of the last Neotropical mega-herbivore, the lowland tapir (Tapirus terrestris)

Figure 4

Phylogeographical hypotheses: (i) the null hypothesis of allopatric divergence within the four main geographic regions (haplotypes grouped by sampling site location irrespective of recovered phylogenetic relationship); and two alternative hypotheses: (ii) divergence between clades I and II (as identified from phylogenetic relationships), separating lowland western Amazonia (clade II) from Andean foothills (clade I), followed by divergence of clades III and IV from clade II, leading to the colonization of regions north and south of the Amazon river, respectively; and, (iii) split from a lowland western Amazonia ancestral population leading to the colonization of regions north and south of the Amazon river, followed by a later split of lowland western Amazonia and Andean foothills populations.

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