A maximum of five sequences for haplotypes have been used to build ML tree using phyML. Boostrap values above 70 are shown in the tree. The figure shows 9 haplotypes, denoted as Hc 1-9, grouped in two main clades, indicated as grey (B) and black (A) continuous lines. The distribution of each haplotype between the five colonies under study is shown as a pie chart, in which colonies are represented in blue (1), red (2), green (3), grey (4) and black (5). The total number of individuals corresponding to each haplotype is indicated as a bar chart beside the tree.