Fig. 1.

The net relatedness index (NRI) (a) and β-nearest taxon index (βNTI) (b) of the shrimp gut samples under different health state across three sampling days. Horizontal dashed lines in b indicate upper and lower significance thresholds at βNTI = + 2 and − 2, respectively. HI healthy gut, DI diseased gut. Significant differences were indicated by the asterisk (*P < 0.05) based on one-way analysis of variance. Lines at the top, bottom, and middle of the box correspond to the 75th, 25th, and 50th percentiles (median), respectively. The asterisk in the box represents the mean value