Fig. 1

The characteristics of gut microbiota composition for tree shrew. a The constituent ratios of microbial communities at five levels. b Relative abundance of all samples at phylum level. Age groups: I (infant), Y (young), M (middle) and S (senile). Gender: F (female), M (male). c Relative abundance of all samples at genus level. Age groups: I (infant), Y (young), M (middle) and S (senile). Gender: F (female), M (male). d Venn diagram showing different OTUs between gender groups. e Venn diagram showing different OTUs between age groups