Figure 4. Number of GM phyla shared between given mouse strains after applying a cut off threshold (0.19%) for the low abundant taxa.

Whenever a given genus was present in both categories but the value for one or both was bellow the threshold level the label was kept and classified as shared. 80000 high quality 16s rRNA reads used to represent each mouse strain were annotated to the Ribosomal Database Project (RDP, http://rdp.cme.msu.edu/) database. In three cases the single phylum Verrucomicrobia is reducing similarity to 90%. The only genus representing this subgroup is Akkermansia. Labels “BALB/c (f)”, “BALB/c (c)”, “B6.V-Lep^ob/J (16)” and “B6.V-Lep^ob/J (8)” stand for the gut GM of BALB/c mice determined using fecal and caecal samples and B6.V-Lep^ob/J mice using fecal specimens sampled in 16 and 8 weeks of age respectively.