Fig. 2: Enterotype stratification for shrimp.

a A DMM-based enterotype analysis was conducted to identify three enterotypes. PCoA showed that the microbial structure of three enterotypes was separated. Relative abundance of keystone genera, Vibrio, Shewanella and Candidatus Bacilloplasma were related to dimension 1 and 2. b Abundance distribution of the three keystone genera at different enterotypes. c A metagenomic sequencing of a subset of 131 IM samples was further conducted. PCoA showed that the potential functions of three enterotypes were distinctive from each other (PerMANOVA, P = 0.005**). d The alpha diversity indicated by Chao1 index and Shannon index among three enterotypes were significantly different (ANOVA, P < 0.05*). e Assembly patterns of different ecological processes for three enterotypes. f Spearman’s correlation to determine the relationship among keystone genera and other microbes. g The distribution of enterotypes among different countries.