Fig. 2
From: Fidelity varies in the symbiosis between a gutless marine worm and its microbial consortium
The composition of the symbiont community in 80 O. algarvensis individuals. a The number of O. algarvensis host individuals from two mitochondrial lineages (COI haplotypes A and B) and two locations (Sant’ Andrea and Cavoli) in which the respective symbiont species was detected (n = 80 in total; 20 replicates per location and COI haplotype; Supplementary text 1.1). b Relative read abundances of symbionts in the 80 O. algarvensis individuals. Each column shows the reads from a single host individual. The sulphur-oxidizing symbionts Ca. Thiosymbion (Ca. Thiosym.) and Gamma3 were the most abundant across host individuals, while the abundances of the sulphate-reducing symbionts (Delta1a, Delta1b, Delta3, Delta4) and the spirochete symbiont (Spiro) were consistently lower. Relative abundances of each symbiont were estimated based on metagenomic sequencing reads that mapped to the single-copy genes of each symbiont (Supplementary text 1.1). Relative symbiont abundances based on 16S rRNA gene sequences in the metagenomes were similar (Supplementary text 1.2; Supplementary Fig. S5)