P represents the significance of the variation among groups (random > observed). Variation was partitioned in the tested structures.
A: group 1: Cameroon, Príncipe, S. Tomé (1997, 2004), group 2: Annobón and Bioko;
B: group 1: Cameroon, group 2: all other populations;
C: group 1: Cameroon, group 2: S. Tomé and Príncipe, group 3: Annobón and Bioko.
D: group 1: Cameroon, group 2: Príncipe, group3: S. Tomé, group 4: Annobón and group 5: Bioko.