Effect of stock density on the microbial community in biofloc water and Pacific white shrimp (Litopenaeus vannamei) gut microbiota

被引:68
|
作者
Deng, Yale [1 ,2 ]
Xu, Xiangyang [3 ]
Yin, Xuwang [4 ]
Lu, Huifeng [3 ]
Chen, Guangshuo [5 ]
Yu, Jianhai [5 ]
Ruan, Yunjie [1 ,5 ]
机构
[1] Zhejiang Univ, Inst Agr Bioenvironm Engn, Coll Biosyst Engn & Food Sci, 866 Yuhangtang Rd, Hangzhou 310058, Zhejiang, Peoples R China
[2] Wageningen Univ, Dept Anim Sci, Aquaculture & Fisheries Grp, NL-6708 WD Wageningen, Netherlands
[3] Zhejiang Univ, Dept Environm Engn, Hangzhou 310058, Zhejiang, Peoples R China
[4] Dalian Ocean Univ, Coll Fisheries & Life Sci, Dalian 116023, Peoples R China
[5] Zhejiang Univ, Rural Dev Acad, Hangzhou 310058, Zhejiang, Peoples R China
关键词
Biofloc technology; Stock density; Shrimp; Gut microbiota; Microbial community; CULTURE-SYSTEM; ZERO-EXCHANGE; C/N RATIO; GROWTH; PERFORMANCE; TECHNOLOGY; NITROGEN; QUALITY; SUPPLEMENTATION; DIVERSITY;
D O I
10.1007/s00253-019-09773-4
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Biofloc technology is an efficient approach for intensive shrimp culture. However, the extent to which this process can influence the composition of intestinal microbial community is still unknown. Here, we surveyed the shrimp intestinal bacteria as well as the floc water from three biofloc systems with different stock densities. Our study revealed a similar variation trend in phylum taxonomy level between floc bacteria and gut microbiota. Microbial community varied notably in floc water from different stock densities, while a core genus with dominating relative abundance was detected in gut samples. Extensive variation was discovered in gut microbiota, but still clustered into groups according to stock density. Our results indicated that shrimp intestinal microbiota as well as bacteria aggregated in flocs assembled into distinct communities from different stock densities, and the intestinal communities were more similar with the surrounding environment as the increase of stock density and resulting high floc biomass. The high stock density changed the core gut microbiota by reducing the relative abundance of Paracoccus and increasing that of Nocardioides, which may negatively influence shrimp performance. Therefore, this study helps us to understand further bacteria and host interactions in biofloc system.
引用
收藏
页码:4241 / 4252
页数:12
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