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Fig. 4 | Microbiome

Fig. 4

From: Fidelity varies in the symbiosis between a gutless marine worm and its microbial consortium

Fig. 4

Host mitochondrial lineage and geographic location had a significant effect on the genetic divergence of some but not all symbionts. Host mitochondrial lineages explained genetic divergence in Ca. Thiosymbion and Gamma3, while geographic location explained divergence in the Gamma3, Delta1b and Delta4 symbionts. Pairwise genetic distances in O. algarvensis mitochondrial genomes and symbionts were calculated from pairs of O. algarvensis individuals within the same combination of host lineage (A- or B-host) and location (“Within”), between individuals of A- and B-hosts from the same location (“Between A- and B-hosts”) and between individuals from the two locations, Sant’ Andrea and Cavoli, but from the same host lineage (“Between locations”). Pairwise genetic distances were compared among these three categories for a mitochondria, Ca. Thiosymbion, c Gamma3 symbiont, d Delta1a symbiont, e Delta1b symbiont, f Delta4 symbiont and g spirochete symbiont. Genetic distances were normalized per SNP site and log scaled. Thick horizontal lines and grey boxes respectively indicate the median and interquartile range (IQR) of observations. Vertical lines show the IQR ± 1.5 IQR range, and outliers out of this range are shown as circles. Numbers in brackets indicate numbers of pairwise comparisons per category tested. Asterisks respectively denote statistical significance (*p < 0.05, **p < 0.01, see Supplementary Table S5). Orange and blue brackets highlight a significant effect on genetic divergence by the mitochondrial lineage and location, respectively. “N.S.” indicates no significant differences among categories (p > 0.05)

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