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Influences of Community Coalescence on the Assembly of Bacterial Communities of the Small-Scale Complex Aquatic System from the Perspective of Bacterial Transmission, Core Taxa, and Co-occurrence Patterns

文献类型： 外文期刊

作者： Xu, Huimin 1 ; Zhang, Yi 3 ; Fan, Dingyue 1 ; Meng, Shunlong 1 ; Fan, Limin 1 ; Song, Chao 1 ; Qiu, Liping 1 ; Li, Dandan 1 ; Fang, Longxiang 1 ; Liu, Zhuping 1 ; Bing, Xuwen 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Peoples R China

2.Minist Agr & Rural Affairs, Lab Qual & Safety Risk Assessment Aquat Prod Envir, Wuxi 214081, Peoples R China

3.Taihu Basin Author Minist Water Resource, Water Conservancy Dev Res Ctr, Shanghai 200438, Peoples R China

4.Shanghai Ocean Univ, Coll Fisheries & Life Sci, Shanghai 201306, Peoples R China

关键词： Aquaponics; Microhabitats; Community coalescence; Bacterial transmission; Core taxa; Co-occurrence network

期刊名称：MICROBIAL ECOLOGY （ 影响因子：4.0； 五年影响因子：4.0 ）

ISSN： 0095-3628

年卷期： 2024 年 87 卷 1 期

页码：

收录情况： SCI

摘要： Recirculating aquaculture and aquaponics are considered sustainable aquaculture models playing important roles in animal-derived protein supply. In these aquaculture systems, microorganisms are crucial for the system stability. The community coalescence by mixing substances and microorganisms from various microhabitats under hydraulic forces is important for shaping the bacterial communities in these small-scale complex systems. However, the influences of community coalescence on bacterial communities remain rarely revealed in these systems. In this study, aquaponics (APS) and recirculating aquaculture (RAS) systems were set up to explore the bacterial community coalescence across different microhabitats, including water, fish feces, biofilter biofilms, and plant rhizosphere environment. Our results showed that diversity and compositions varied across different microhabitats in both systems. However, bacterial transmissions across these microhabitats differed between systems. The core microbiome of the RAS and APS were formed under community coalescence with the highest contribution of bacterial taxa derived from the fish feces. Nevertheless, the plant rhizosphere bacterial community also contributed to the core microbiome of the APS. Furthermore, the core taxa showed a higher average degree than the other nodes in the bacterial community networks in all microhabitats except for the plant rhizosphere environment, implying the important roles of core taxa in maintaining these bacterial community networks. Our results provide new insights into the assembly of bacterial communities under community coalescence in the artificial aquatic ecosystems comprising complex microhabitats, which is vital for developing microbial solutions for regulating the microbial communities to improve system performance in the future.

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