Figure 1.
Phylogeny of the southern African lacertids.
Phylogenetic reconstruction (left) using Bayesian inference (BI) of the southern African radiation of the lacertid subfamily Eremiadini based on the combined partial 16S, ND4, RAG1 and KIAA gene regions and inferred by BI and maximum likelihood (ML). Nodes with filled circles indicate BI posterior probabilities ≥0.95 and ML bootstrap values ≥75%. Representatives of the body shapes for each general clade are included (right) to show differences in bauplan of the main genetic clades. Key to the color coding for genera and species abbreviations: Australolacerta (red): AA = Australolacerta australis, AR = A. rupicola; Ichnotropis (gray): IB = Ichnotropis bivittata, IC = I. capensis, IS = I. squamulosa; Meroles (orange): MA = Meroles anchietae, MCT = M. ctenodactylus, MCU = M. cuneirostris, MK = M. knoxii, MS = M. suborbitalis; Pedioplanis (light blue): PB = Pedioplanis burchelli, PI = P. inornata, PLL = P. lineoocellata lineoocellata, PLP = P. l. pulchella, PN = P. namaquensis; Tropidosaura(blue): TG = Tropidosaura gularis, TMM = T. montana montana, TMR = T. m. rangeri.
Figure 2.
Clustering and principal components analysis of morphological markers.
Boxplots of the first three principal component axes (center) for each morphological group (A, B) retrieved by hierarchical clustering (shown right). Positive values of the PC axes indicate larger body dimensions, whilst negative values indicate smaller body dimensions. Morphological groupings are shaded as follows: A1 = bright green, A2 = lime green, A3 = green, B1 = blue, B2 = purple. The phylogenetic tree (left) is color coded by species according to its morphological group membership. Morphological measurements are shown on lizard schematic, and line colors correspond to sets of original variables that loaded onto each PC (PC1 = red, PC2 = yellow, PC3 = light blue). Percentage of variation contributed to each PC axis is given. Key to the species abbreviations as in Fig. 1.
Table 1.
Principal components analysis loadings of size-regressed measurements.
Table 2.
Analysis of variance (ANOVA) results for morphological clusters.