Fig. 6

Detection of early life core microbiome and stage core microbiome. a Heatmap of core microbiome and stage core microbiome. Scale represents relative abundance. Scale represents relative abundance. Legend bar shows the sample developmental stage and gut development status. Stage shows the samples collected from different developmental stage. Dark yellow: fertilized egg, purple: gastrula, turquoise: early auricularia, dark green: late auricularia, pink: pentactula, and blue: juvenile, respectively. GutDev shows the gut development status of samples, light yellow represents samples before gut developed and light green represents samples post gut developed. FE: Fertilized Egg; GL: Gastrula; EA: Early Auricularia; LA: Late Auricularia; PT: Pentactula; JN: Juvenile. GutDev shows the gut development status of samples, light yellow represents samples before the gut developed and light green represents samples post-gut development. b CI for core bacteria (at the family level) in the sea cucumber larvae and NorCI, the normalized core index