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Fig. 7 | BMC Evolutionary Biology

Fig. 7

From: Pre-Quaternary divergence and subsequent radiation explain longitudinal patterns of genetic and morphological variation in the striped skink, Heremites vittatus

Fig. 7

Clinal vs. mean trait differentiation in Heremites vittatus. a Map of sample locations and assignment to geographical groups (western, central, eastern). Dispersal barriers (Marmarica region, Amik Plain [AP]) that delimit the geographical groups are indicated in orange. Traits were first tested for significant differences between groups (Dunnett’s modified Tukey-Kramer [DTK] test). Different letters above graphs indicate significant mean differences between groups. For analysis of clinal variation, groups were then regressed against longitude (western, eastern) or latitude (central). Multiple R2 values and significance of regression are indicated below graphs. b Example of a trait that does not show mean differences between groups or clinal variation within groups. c Example of a trait that shows mean differences between groups, but no evidence of clinal variation within groups. d, e Examples of traits that show mean differences between groups, and clinal variation in the central group. f Summary of patterns of variation in the 19 analyzed traits

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