Fig. 3: Alpha diversity and relative abundance of pBMCs inoculated genera in the microbiome associated to probiotic-treated corals vs placebo-treated corals.

a Alpha diversity indices (H’ = Shannon–Weaver diversity, Simpson, and Chao1) estimated by treatment (placebo and probiotic) at each sampling time are shown. The statistically significant differences are denoted with asterisks: ∗∗p < 0.01; ∗∗∗p < 0.001. b Relative abundance of the pBMCs genera in the coral microbiome of P. verrucosa at T3 according to treatment (placebo and probiotic). Significant differences were detected between treatments in Bacillus (here as a proxy of Sutclifiella), Halomonas, and Pseudoalteromonas in probiotic-treated corals. The statistically significant differences are denoted with asterisks: ∗p < 0.05; ∗∗p < 0.01; and ∗∗∗p < 0.001. The depicted boxplots show the median (center line) and the first and third quartiles (lower and upper bounds). Biological replicates per treatment (n = 15).