Figure 3.

Gill bacterial community composition of Catillopecten margaritatus and genomic overview of the ectosymbiont Candidatus Thiodubiliella margaritatus. A: 16S rRNA gene amplicon sequencing results showing the relative frequency of the SOB symbiont and other bacteria in three individuals at the family level. The most abundant amplicon sequence variant (ASV) is a sulfur-oxidizing bacteria from the family Thioglobaceae (Table S4). B: Venne diagram showing the shared ASVs among the three samples. C: Circus plot of the ectosymbiont genome with its features. From the outer to inner circle: CDS, contigs, GC content, GC skew, genomic size.