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Aquaculture Environment Interactions

    AEI prepress abstract   -  DOI: https://doi.org/10.3354/aei00395

    Intestinal microbial diversity and functional analysis of Urechis unicinctus under two different habitats: pond poly-cultured with Penaeus japonicus and coastal zone

    Yongzheng Tang, Shuai Ma, Yihao Liu, Yongrui Pi*,Ying Liu, Ye Zhao

    *Corresponding author:

    ABSTRACT: Urechis unicinctus, an important commercial and ecological invertebrate inhabiting coastal U-shaped burrows, has potential applications in the study of marine invertebrate animal evolution and marine pharmaceuticals development. The intestinal microbial diversity and functional analysis of Urechis unicinctus under 2 different habitats were first analyzed through 16S r DNA 454 high-throughput sequencing technique. The dominant phylums were Proteobacteria, Bacterioidetes, Firmicutes and Actinobacteria in gut samples of Urechis unicinctus, which was significantly different from that in its 2 habitats. Except Proteobacteria, Firmicutes and Bacterioidetes accounted the highest phylum in the sediments and water samples. The top 15 genes in the gut samples did not show significantly difference from the 2 habitats. The functions of intestinal microbial community were focused on metabolism including carbohydrate metabolism and amino acid metabolism. Methane metabolism was one of the main functions among energy metabolism. Also, the gut microbe were found to be important among environmental and genetic information processing, cellular processes, etc. The findings in the present study provide an understanding of gut microbiome composition and diversity in Urechis unicinctus from 2 living conditions. This can be instructive towards the management of animal health in Urechis unicinctus farming activities and further gut microecology research.