(A) LEfSE (LDA Effect Size) was used to investigate baseline bacterial taxa that predict dominant versus subordinate status upon pairing. Red, future dominant-enriched taxa; green, future subordinate-enriched taxa. Only taxa meeting an LDA significant threshold >2.0 are represented. Relative values of Phylum Proteobacteria (B), Genus Allobaculum (C), Genus Methanimicrococcus (D), Genus Prevotella (E), and Phylum Firmicutes (F) abundance at baseline in future dominant and subordinate hamsters. Data are the medians ± IQR. P values were determined using Mann-Whitney U test. * denotes significantly higher at baseline in future dominants; ** significantly higher at baseline in future subordinates (P<0.05).