Enterococcus faecium are associated with the modification of gut microbiota and shrimp post-larvae survival

• Published in: Animal microbiome 2021-12, Vol.3 (1), p.88-88, Article 88
• Main Authors: Du, Shicong, Chen, Wei, Yao, Zhiyuan, Huang, Xiaolin, Chen, Chen, Guo, Haipeng, Zhang, Demin
• Format: Article
• Language: English
• Subjects: Enterococcus faecium; Gut microbiota; Predicted function; Shrimp post-larvae; Survival
• ISSN: 2524-4671; 2524-4671
• DOI: 10.1186/s42523-021-00152-x

Probiotics are widely used to promote host health. Compared to mammals and terrestrial invertebrates, little is known the role of probiotics in aquatic invertebrates. In this study, eighteen tanks with eight hundred of shrimp post-larvae individuals each were randomly grouped into three groups, one is shrimps administered with E. faecium as probiotic (Tre) and others are shrimps without probiotic-treatment (CK1: blank control, CK2: medium control). We investigated the correlations between a kind of commercial Enterococcus faecium (E. faecium) powder and microbiota composition with function potentials in shrimp post-larvae gut. We sequenced the 16S rRNA gene (V4) of gut samples to assess diversity and composition of the shrimp gut microbiome and used differential abundance and Tax4Fun2 analyses to identify the differences of taxonomy and predicted function between different treatment groups. The ingested probiotic bacteria (E. faecium) were tracked in gut microbiota of Tre and the shrimps here showed the best growth performance especially in survival ratio (SR). The distribution of SR across samples was similar to that in PCoA plot based on Bray-Curits and two subgroups generated (SL: SR