Phylogenetic relationships
Our phylogenetic results using maximum likelihood (ML) and Bayesian
inference (BI) generated identical tree topologies. We recovered a
monophyletic relationship among the populations of L. columnarisfrom Bioko and Cameroon. However, we distinguished three highly
supported clades in the phylogenetic tree. A common ancestor closely
relates the mainland Cameroon clades (Mt. Cameroon, Bamenda, and Mt.
Oku) with North Bioko (Pico Basilé) sister to these clades. The clade of
southern Bioko (Pico Biao-Moka and Gran Caldera) is distinct and sister
to the previous subclades (Figure 3).