Fig. 2.

Identification of clade C sequences containing the S. thermo.-indel as a proxy for the presence of S. thermophilum and classification of the symbiont complements in all sampled individuals. Each vertical bar represents a single sample. The contribution of sequences representing different clades/species to the sequence complement of each sample is color-coded as defined in the legend. Sample origins are shown below the chart (Table S1). Numbers of samples containing the S. thermo.-indel as a proportion of the total samples are shown in white in the format (*)/(*) (Tables S1 and S2).