Fig. 3

Comparison of the relative abundance of gut microbiota at phylum and genus levels in Harmonia axyridis feeding on different diets. (A Firmicutes and Proteobacteria were the major phyla in gut microbiota of H. axyridis feeding on aphids, the relative abundance of these two phyla changed greatly in the other groups, B The composition of gut microbiota was different among the groups at genus level.)