Insights into the bacterial community compositions of peanut worm (Sipunculus nudus) and their association with the surrounding environment

The peanut worm ( Sipunculus nudus ) is an important economic and ecological fishery resource in China. To determine how S. interacts with its culture environment, this study, the diversity, composition, interrelationships of bacterial communities intestine, coelomic fluid, environment through high-throughput sequencing using Illumina HiSeq platform. Alpha diversity analysis showed that highest community richness were found sediments. Species annotation revealed Proteobacteria dominated all samples (48.92%–58.36%), other dominant phyla highly variable, indicating a certain independence between composition . fluid contained high concentrations Bacillus could be source potential probiotic bacteria for isolation culture. Cluster operational taxonomic unit Venn diagram analyses intestine was more similar to sediments compared water. predicted functional indicated functions different surrounding involved various aspects, such as membrane transport, amino acid metabolism, carbohydrate replication repair. Our findings have implications on establishment sustainable microecological regulation management strategies provide reference development utilization bacteria.