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Figure 3 | BMC Evolutionary Biology

Figure 3

From: Ecological and genetic divergence between two lineages of Middle American túngara frogs Physalaemus (= Engystomops) pustulosus

Figure 3

Posterior probability for population cluster. a) The log likelihood [Pr(X I K)] for a given number of population clusters (K) in Middle American túngara frogs. The graph shows that most of the population structure is captured by setting K = 3 or K = 4. For higher Ks the likelihood is not or only very slightly increasing. b) ΔK in relation to the number of clusters (K) [59]. The graph shows that ΔK is highest for K = 2, which relates to the geographic division of túngara frogs by the gap in a Northern and Southern lineage. However there is still a relevant change in the Pr(X I K) by increasing K to 3 and 4, which relates to a further subdivision of the Southern lineage in several population clusters.

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