Fig. 4

Correlation of antimicrobial resistance genes (ARGs) with gut bacteria. a The association in the abundances between gut bacterial species and ARGs by Procrustes analyses. The dots show the ordination positions of the abundances of bacterial species in each sample, and the triangulars indicate the ordination positions of the abundances of ARGs. The length of lines between dot and triangular shows the Procrustes residuals. b Significantly different degrees of the correlationships in abundances between bacterial species and ARGs among nine pig populations. Horizontal lines indicate the median (solid), 25% and 75% quantiles (dashed) of Procrustes residuals. The y-axis shows Procrustes residuals and the x-axis indicates the number of samples. For a and b, the numbers in brackets of the graphic symbol represent the sample number of each population. c The distribution of 1295 antimicrobial resistance protein-coding genes on bacteria at different taxonomy levels. The colors of the rectangles represent different taxonomy levels. The length of the rectangles indicates the number of ARGs