Fig. 1: Effect of antibiotic treatment on E. pulchripes and G. connexa.

Time series of mean weight loss (mean ± SE ribbon) in (a) E. pulchripes and (b) G. connexa; faecal counts in (c) E. pulchripes and (d) G. connexa; total colony forming units in (e) E. pulchripes and (f) G. connexa; (g) 16S rRNA gene copy numbers in the faeces; and (h) CH4 production rate after 35 days of antibiotics treatment in E. pulchripes. ‘High Conc.’ and ‘Low Conc.’ refer to the concentration of applied antibiotics (see “Materials and methods” section for more details). Different lower case letters in panels g and h denote statistical significance. See “Results” section for a detailed description of the statistical tests performed on the time series (panels a–f).