Figure 3.

Triplot of snake reproduction from a partial canonical phylogenetic ordination (pCPO). Ecological and phylogenetic variable arrows (red): Each arrow points in the direction of the steepest increase of variable values. The angle between arrows indicates the correlation between individual variable. Reproduction variable arrows (blue): Each arrow points in the direction of the steepest increase of the values for corresponding reproduction variable. The angle between arrows indicates the sign of the correlation between the reproduction variables: The approximated correlation is positive when the angle is sharp. Species are represented by green circles. Bm, Boiruna maculata; Ej, Erythrolamprus jaegeri; Ep, Erythrolamprus poecilogyrus; Es, Erythrolamprus semiaureus; Hg, Hydrodynastes gigas; Hi, Helicops infrataeniatus; Hl, Helicops leopardinus; La, Lygophis anomalus; MF, mean fecundity; Pa, Philodryas aestiva; Po, Philodryas olfersii; Pp, Philodryas patagoniensis; Pr, Paraphimophis rustica; RP, reproductive potential; Tc, Thamnodynastes chaquensis; Th, Thamnodynastes hypoconia; Ts, Thamnodynastes strigatus; Xd, Xenodon dorbingyi; Xm, Xenodon merremii