(a) Results from diversification analyses performed in BEAST for the four Pristionchus pacificus lineages, A, B, C, and D, using the mtDNA “world” dataset. Time estimates to the most recent common ancestor (TMRCA) overall, and for the four lineages are provided in generations. Estimated values for TMRCAs are rounded to the nearest 103; (b) Results from mismatch distribution analysis performed in Arlequin for the four Pristionchus pacificus La Réunion populations, a, b, c and d, using the mtDNA “Réunion” dataset. “t” represents time since expansion in years before present (ybp) based on the relationship between τ and t (t = τ/2μ) assuming a 1-year generation time and a mutation rate estimate of 4.294 × 10−5 substitutions per locus per year; values for t are rounded to the nearest 103; (c) Mean, median, and 25 and 75% posterior quartiles of the parameters estimated in DIYABC runs using both STR and mtDNA data for the most likely diversification/colonization scenario (see Results). Presented parameters (i.e. t8–t1, moving forward in time) correspond to the order/timing of lineage diversification (t5–8) and island colonization (t1–4), U>D/A>C>B>c>a>b>d. All parameter estimate values are rounded to the nearest 103. See Methods and Results for further information
