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Ulva lactuca changed bacteria community structure and enhanced nitrogen removal capability in a shrimp-sea cucumber-crab-algae integrated multi-trophic aquaculture (IMTA) system

文献类型： 外文期刊

作者： Kong, Shuo 1 ; Ghonimy, Abdallah 1 ; Chen, Zhao 1 ; Farouk, Mohammed Hamdy 3 ; Zhai, Qianqian 1 ; Liu, Qingbing 4 ; Zhao, Fazhen 1 ; Li, Jian 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr, Qingdao 266071, Peoples R China

2.Ocean Univ China, Fisheries Coll, Qingdao 266003, Peoples R China

3.Al Azhar Univ, Fac Agr, Dept Anim Prod, Cairo 11884, Egypt

4.Qingdao Ruizi Grp Co Ltd, Qingdao 266408, Peoples R China

关键词： Bioremediation; Nitrogen removal; Integrated multi-trophic aquaculture (IMTA); Ulva lactuca; Nitrogen cycle functional genes; Bacterial-algal interaction

期刊名称：AQUACULTURE INTERNATIONAL （ 影响因子：2.2； 五年影响因子：2.5 ）

ISSN： 0967-6120

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Integration of biological activities of the algal and bacterial communities enhances the bioremediation potency of aquaculture systems. The effects of nitrogen removal mediated by Ulva lactuca on the bacterial community structure and the abundance of nitrogen cycle functional genes were investigated using an integrated multi-trophic aquaculture (IMTA) system mainly composed of sea cucumber (Stichopus japonicus), shrimp (Penaeus japonicus), and crab (Portunus trituberculatus). The experimental treatments were separated into two groups: control group (C: without U. lactuca) and algae treatment (A: with U. lactuca). Microbial diversity and abundance indexes, including the Sobs, Shannon, Ace, and Chao1 indexes, were higher in the U. lactuca treatment group in both water and sediment. Flavobacteriaceae and Rhodobacteraceae were the dominant families in both the U. lactuca and control treatment groups in October and November, respectively. In sediment, Bacillaceae was the dominant family in the U. lactuca treatment group throughout the experimental period, whereas Desulfocapsaceae was the dominant family in the control group in October and November. Moreover, the nitrogen cycle functional genes nifH, amoA, nxrB, norB, and nrfA were more abundant in the U. lactuca treatment group than in the control group. Results of water quality and its correlation with bacterial community were comprehensively investigated, revealing that U. lactuca influenced the bacterial community structure and nitrogen cycle by increasing DO in the IMTA system. In conclusion, U. lactuca co-cultured in an IMTA system could represent a novel approach for enhancing nitrogen removal, based on the interaction between the algal and bacterial communities.

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