New Insights into the Relationships between Bacterial Dynamics and Water Quality of Aquaculture Systems Supplemented with Carbon Source and Biofilm Substratum
文献类型： 外文期刊
作者： Yu, Er-Meng 1 ; Li, Zhen-Chi 2 ; Li, Zhi-Fei 1 ; Wang, Guang-Jun 1 ; Xia, Yun 1 ; Zhang, Kai 1 ; Tian, Jing-Jing 1 ; Gong 1 ;
作者机构： 1.Pearl River Fisheries Res Inst CAFS, Guangdong Prov Key Lab Aquat Anim Immune Technol, Guangzhou 510380, Peoples R China
2.Minist Ecol & Environm, State Environm Protect Key Lab Environm Pollut Hl, South China Inst Environm Sci, Guangzhou 510655, Peoples R China
关键词： bacterial community; biofilm substrata; freshwater aquaculture; 16S rRNA amplicon; fish growth
期刊名称：MICROORGANISMS （ 影响因子：4.128； ）
ISSN：
年卷期： 2021 年 9 卷 10 期
页码：
收录情况： SCI
摘要： Aquaculture is crucial for achieving the FAO's goal of a world without hunger and malnutrition. Recently, biofilm substratum has been proposed as an effective means to control waste pollution caused by excessive nutrient inputs from aquaculture, but key bacterial communities involved in the remediation remain unclear. Here we reported a freshwater mesocosm study where the addition of biofilm substrata with external carbon effectively controlled the total ammonia nitrogen and improved fish growth. 16S rRNA study and Weighted UniFrac analysis revealed that bacterial compositions were significantly different (999 permutations, p-value < 0.01) between the biofilm-substrata-added and biofilm-substrata-free systems. Planctomycetes were found, as key bacteria benefited from the biofilm substrata addition and exerted the major function of ammonia nitrogen control. Our study demonstrated that the addition of biofilm substrata and an external carbon source favored fish growth and improved the aquaculture environment by the formation of a unique bacteria community.
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