In order to study the effects of carbon source addition on the bacterial community, water quality and shrimp growth in the recirculating aquaculture system of Litopenaeus vannamei, sucrose with 50% of the daily feed was added daily to the system from the middle stage of culture. The bacterial communities in biofilters, aquaculture waters and shrimp intestines were measured using an Illumina MiSeq platform. The addition of sucrose did not significantly improve the regulation of nitrogen in the water, although there was a tendency to increase shrimp production. The addition of sucrose also had little effect on the bacterial community of water and intestine, but had significant effects on the bacterial community in the biofilter. Carbon addition transformed the dominant bacterial taxa of the biofilter from the Proteobacteria dominated by Rhodobacteraceae to the Planctomycetes dominated by Planctomycetaceae. In this study, the characteristics of the bacterial community and the effects of carbon source addition in the recirculating aquaculture system of L. vannamei are presented, which provides a basis for microbial management in the recirculating aquaculture system of L. vannamei. In view of the unknown role of numerous bacterial groups, the function of the bacterial community needs further study.

中文翻译：

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添加碳源对南美白对虾循环水养殖系统微生物群落和水质的影响

为了研究碳源添加对南美白对虾循环水养殖系统中细菌群落、水质和虾生长的影响，从养殖中期开始每天向系统中添加50%日饲料的蔗糖。使用 Illumina MiSeq 平台测量生物过滤器、水产养殖水域和虾肠中的细菌群落。添加蔗糖并没有显着改善水中氮的调节，尽管有增加虾产量的趋势。蔗糖的加入对水和肠道细菌群落的影响不大，但对生物滤池中的细菌群落有显着影响。碳添加将生物过滤器的优势细菌分类群从以红杆菌科为主的变形菌转变为以浮游菌科为主的浮游菌。本研究介绍了南美白对虾循环水养殖系统的细菌群落特征和碳源添加的影响，为南美白对虾循环水养殖系统的微生物管理提供了依据。鉴于众多细菌群的作用未知，细菌群落的功能需要进一步研究。这为南美白对虾循环水养殖系统中的微生物管理提供了基础。鉴于众多细菌群的作用未知，细菌群落的功能需要进一步研究。这为南美白对虾循环水养殖系统中的微生物管理提供了基础。鉴于众多细菌群的作用未知，细菌群落的功能需要进一步研究。