Figure 3
Phylogeny of Octocorallia used in this study, derived from sequences reported by McFadden et al. (2006). The scale bar indicates number of substitutions per site, while numbers at nodes indicate percentage Bayesian posterior probabilities. To the right of the phylogeny, four columns of circles represent values of photosynthesis to respiration ratios (P/R), δ13Chost, δ13Csymbiont and calyx depth (used as a proxy for polyp size). The size and shading of each circle are proportional to the values reported in Supplementary Table S1. In addition, the known Symbiodinium associations are shown as well as the colony morphology (not to scale). ‘unsp.’ Indicates a unique Symbiodinium genotype with no clade designation.
