Legends
Figure 1 : Aerial photographs of sampling sites for A) P. siculus, B) P. viridiscens, C) Teira dugesii and D) P. bocagei andP. lusitanicus. Specific collection areas are delimited by yellow lines). Map data ©2021 Google
Figure 2: Relative frequency of the most abundant bacterial phyla in the gut microbiome of the studied lizard species
Figure 3: Boxplots of the alpha-diversity indices (Faith’s phylogenetic diversity, Shannon diversity and the number of observed ASVs) for the gut microbiome of the studied lizards.
Figure 4: PCoA plots representing Bray-Curtis and Unweighted Unifrac distances, grouped by species with 95% confidence interval ellipse.
Figure 5 : Abundance of Corynebacterium in the gut microbiota of males and females of Podarcis bocagei andPodarcis lusitanicus from Moledo.
Figure 6 : Boxplots depicting the significant differences in the abundance of the main bacterial genera (> 1% of all sequences) among species collected in Lisbon (Podarcis siculus, Podarcis virescens and Teira dugesii)
Figure 7 : Boxplots depicting the abundance of the main bacterial genera (> 1% of all sequences) for which species*sex was significant in species collected from Lisbon (Podarcis siculus , Podarcis virescens and Teira dugesii ).
Figure 8 : Linear regression plot between size (SVL) and gut bacterial alpha-diversity (Shannon index) for Podarcis siculus. The coloured area represents the 95% confidence limit.
Table 1 : Results from the linear models testing the effect of locality, species and sex in gut microbial alpha-diversity (F-statistics and respective p-values) and beta-diversity estimates (R2 and respective p-values). Significant results are depicted in bold.