Genome-resolved metagenomics suggests a mutualistic relationship between Mycoplasma and salmonid hosts

Jacob Rasmussen et al. use metagenomic analyses to examine the diversity of Mycoplasma species among three commonly-fished species of salmonids. Their results establish a phylogeny of candidate salmonid related Mycoplasma species and suggest a mutualistic relationship between these microbial species and salmon hosts.