The Gill-Associated Bacterial Community Is More Affected by Exogenous Chlorella pyrenoidosa Addition than the Bacterial Communities of Water and Fish Gut in GIFT Tilapia (Oreochromis niloticus) Aquaculture System
文献类型： 外文期刊
作者： Meng, Shunlong 1 ; Xu, Huimin 1 ; Qin, Lu 2 ; Chen, Xi 1 ; Qiu, Liping 1 ; Li, Dandan 1 ; Song, Chao 1 ; Fan, Limin 1 ; Hu, Gengdong 1 ; Xu, Pao 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Sci Observing & Expt Stn Fishery Resources & Envir, Wuxi 214081, Peoples R China
2.Nanjing Agr Univ, Wuxi Fishery Coll, Wuxi 214081, Peoples R China
关键词： tilapia aquaculture; Chlorella pyrenoidosa addition; different microhabitats; bacterial communities; community characteristics
期刊名称：BIOLOGY-BASEL （ 影响因子：4.2； 五年影响因子：4.4 ）
ISSN：
年卷期： 2023 年 12 卷 9 期
页码：
收录情况： SCI
摘要： Microalgae has been widely used in aquaculture to improve both the water environment and fish growth; however, the current understanding of the effects of microalgae addition on the key players involved in regulating the water environment and fish health, such as microorganisms, remains limited. Here, a 50-day mesocosm experiment was set up to simulate the culture of Genetic Improvement of Farmed Tilapia (GIFT, Oreochromis niloticus) with an average weight of 14.18 +/- 0.93 g and an average length of 82.77 +/- 2.80 mm. Different amounts of Chlorella pyrenoidosa were added into these artificial systems to investigate dynamics of bacterial communities in aquaculture water, fish gill, and gut using amplicon-based high-throughput sequencing technology. Our results showed that Chlorella pyrenoidosa addition increased diversity and network complexity of gill-associated bacterial communities rather than those of the water and gut. Furthermore, more biomarkers in the gill-associated bacterial communities were detected in response to Chlorella pyrenoidosa addition than the water and fish gut samples. These findings highlighted the high sensitivity of gill-associated bacterial communities in response to the Chlorella pyrenoidosa addition, implying Chlorella pyrenoidosa addition could play important roles in regulating the fish mucosal immunity by altering the gill-associated microbiota.
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