Bacterial community compositions of crab intestine, surrounding water, and sediment in two different feeding modes of Eriocheir sinensis
文献类型： 外文期刊
作者： Sun, Yunfei 1 ; Han, Wenfeng 1 ; Liu, Jian 1 ; Huang, Xiaoshuai 4 ; Zhou, Wenquan 5 ; Zhang, Jinbiao 5 ; Cheng, Yongxu 1 ;
作者机构： 1.Shanghai Ocean Univ, Key Lab Freshwater Aquat Genet Resources, Minist Agr, Shanghai, Peoples R China
2.Shanghai Ocean Univ, Shanghai Engn Res Ctr Aquaculture, Shanghai, Peoples R China
3.Shanghai Ocean Univ, Natl Demonstrat Ctr Expt Fisheries Sci Educ, Shanghai, Peoples R China
4.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Key Lab Fishery Ecol & Environm, Guangzhou, Guangdong, Peoples R China
5.Changzhou Jintan Dist Fisheries Tech Extens Stn, Changzhou 213200, Jiangsu, Peoples R China
关键词： Chinese mitten crab; Bacterial community; Feeding mode; 16S rRNA
期刊名称：AQUACULTURE REPORTS （ 影响因子：3.216； 五年影响因子：3.812 ）
ISSN： 2352-5134
年卷期： 2020 年 16 卷
页码：
收录情况： SCI
摘要： The aim of this study was to reveal the relationship between bacterial communities in the intestine of the Chinese mitten crab Eriocheir sinensis and in the surrounding environment, and to compare these bacterial communities in two different feeding modes: iced fresh trash fish mode and formulated diet mode. We investigated bacterial communities of samples obtained from different feeding modes through high-throughput sequencing technology. Compared with water and sediment, crab intestine had the lowest OTU richness and bacterial community diversity. There were no significant differences in bacterial diversity and OTU richness of water, sediment, and crab intestine between these two feeding modes. Bacteroidetes and Proteobacteria were the most abundant phyla in water, sediment, and crab intestine. Chloroflexi, Actinobacteria, and Tenericutes were the dominant phyla in water, sediment, and crab intestine, respectively. Analyses demonstrated a low average similarity and a small number of shared OTUs between water, sediment, and crab intestine in the two feeding modes. In the iced fresh trash fish feeding mode, there was a total of 86 shared OTUs among three habitats, accounting for 25.60%, 6.95%, and 2.77% of total OTUs in the intestine, surrounding water, and sediment, respectively. In the formulated diet feeding mode, there was a total of 64 shared OTUs among three habitats, accounting for 18.99%, 8.85%, and 2.08% of total OTUs in the intestine, surrounding water, and sediment, respectively. The results suggested that feeding modes did not affect the microbial community in water, sediment, and crab intestine. This study is the first to report on the relationship of bacterial communities in the crab intestine, surrounding water, and sediment, which can expand our knowledge of the bacterial community in E. sinensis culture ecosystems.
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