Numbers represent breeding localities that were sampled for this study (colour codes identical across figures). The size of filled circles corresponds to sample size (number of individuals). “X” represents the only breeding colony from North Atlantic that was not sampled here. Other letters (A to E) for other taxa within the complex.
Figure 2: Gene trees and scenario of breeding site colonization
a. Gene trees obtained by Bayesian inference for all markers, node bars correspond to the 95% confidence interval of the estimated divergence times. The scale corresponds to time before present in Million years (My). b. Gene trees obtained using *BEAST for all mitochondrial markers with dichrous haplotypes in yellow. c. Gene trees obtained using *BEAST for all mitochondrial and nuclear markers with dichrous sequences in yellow. In b. and c. only individuals sequenced for all mitochondrial markers and all markers respectively are showed. Only the posterior values >0.90 are shown. d. Scenario of colonization inferred based on DIYABC. Branch colours correspond to ancestral populations, dates to mean divergence times of trees in My inferred by *BEAST analyses. Each bifurcation corresponds to a divergence-colonization event. * Indicates the split between Atlantic and Indian ancestral populations. The analysis excludes the population of Funchal, due to low sample size (4 individuals).