FIGURE 2 in Speciation and secondary contact in a fossorial island endemic, the São Tomé caecilian

FIGURE 2 Results of the HIEST version 2.0 (Fitzpatrick, 2012) analysis. (a) Joint maximum likelihood estimates of ancestry (S value) and interclass heterozygosity (H value) for Schistometopum thomense (S. thomense) and Schistometopum ephele (S. ephele) for 41 diagnostic single nucleotide polymorphisms (SNPs). Individuals are coloured by morphology (yellow, unflecked = yellow; brown, flecked = grey) indicating that most admixed individuals (intermediate S and H values) are flecked. (b) H values plotted against latitude show that admixed individuals are restricted to the centre of the island at the contact zone. Individuals are coloured according to S values (≥0.9 or ≤0.1)