Morphological evolution
The Blomberg’s K based test of phylogenetic signal analysis shows high value (K>1) in morphological trait in SVL, SL and INS indicating relatively more phylogenetic signal. The comparisons of model fit based on the AICc and AICc weights (ω) indicate the BM model is preferred in SVL, SL and INS, where trait changes between clades can be predicted upon their relatedness. Following a divergence event along phylogeny, that is less labile than expected under a BM model of evolution clades branches may be subject to phylogeny, such as promoting the evolution of different morphological traits under climatic tolerances, which may be accumulated independently from ancestral ones. While, the others fitted a WN model, which seems to be unrelated with shared ancestry but preference of an adaptively phenotypic plasticity (Table 5), which may be closely related to habitat types adapted by clades.