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        養殖尾水對河流沉積物中微生物多樣性的影響
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        單玉玲(1980-),講師,主要從事食品環境研究,E-mail:41499660@qq.com

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        東營市海岸帶典型護花米草區域沉降環境調查(WBC202210)


        The effect of aquaculture tail water on microbial diversity in river sediments
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          摘要:

          海產品工廠化養殖是現階段全球蛋白質供應的主要途徑,但其尾水資源化再利用研究不足。因此,本研究通過原位采樣和高通量檢測技術,分析黃河三角洲永豐河和養殖尾水排水渠中不同樣點原位生物群落結構。結果發現,細菌方面永豐河上游與排水渠源頭的優勢菌屬一致,以Gillisia(25.44%~60.35%)和Psychrobacter(4.26%~7.36%)為主;下游和入??诔练e物中主要為Psychrobacter(23.27%~56.73%)和Proteiniclasticum(16.24%~39.58%)。主坐標分析(Principal co-ordinates analysis, PCoA)發現,永豐河與排水渠沉積物中細菌群落間存在一定差異,但差異并不明顯。代謝分析發現,排水渠中受到養殖尾水影響有大量有機物亟待處理,導致其中特異性降解的增加,而在入海河口附近,維持滲透壓是沉積物中細菌生長的關鍵。古菌方面,上游沉積物以Candidatus Nitrocosmicus(7.14%~22.98%)和Methanosaeta(13.08%~25.69%)為主;污染源頭以Marine Group II(39.38%)為主;下游和入??诔练e物主要是Nitrososphaeraceae(32.70%~78.17%)和Methanogenium(2.19%~11.24%)。PCoA結果表明,樣品間的古菌群落有一定的相似性,采樣區域的差異并不明顯。代謝分析結果表明,古菌更加保守所以更適應于海水滲透壓,而且更容易受到有機質輸入影響,同時古菌可能參與到芳香族代謝的末端降解過程中。研究結果顯示,養殖尾水具有極高的資源化產甲烷的潛力,但其多樣的有機碳需要更多的降解菌群參與提高效率。[中國漁業質量與標準,2023, 13(6):11-18]

          Abstract:

          Industrialized aquaculture of seafood is the main global protein supply. But tail water discharge is the source of pollution in coastal waters, which the reuse research is insufficient. Therefore, in this study, in-situ sampling and high-throughput detection were used to analyze the sediment in the Yongfeng River and the drainage canal in Yellow River Delta, exploring the potential in-situ biological technique. The results showed that the dominant bacteria in the upper reaches of Yongfeng River were consistent with those in the discharge area, mainly Gillisia (25.44%-60.35%) and Psychrobacter (4.26%-7.36%). Meanwhile Psychrobacter (23.27%-56.73%) and Proteiniclasticum (16.24%-39.58%) were the main components in the sediments of the downstream and the estuary. Principal Coordinate Analysis (PCoA) revealed some differences in bacterial communities between the Yongfeng River and the drainage channel sediment. And metabolic analysis indicated that a considerable amount of organic matter in the drainage channel was affected by aquaculture tailwater, leading to an increase in specific degradation. It was found that maintaining osmolality might be crucial for the growth of bacteria in costal sediment. In terms of archaea, the upstream sediments were mainly Candidatus Nitrocosmicus (7.14%-22.98%) and Methanosaeta (13.08%-25.69%), while the main in pollution sources were Marine Group II (39.38%). Nitrososphaeraceae (32.70%-78.17%) and Methanogenium (2.19%-11.24%) were the dominant species in the downstream and estuary sediments. Through PCoA analysis, it was found that there is some similarity in the archaeal communities between the samples. Metabolic analysis revealed that archaea has better adapted to seawater osmotic pressure. Archaea are also more susceptible to organic matter input, which the archaea may participate in the terminal degradation process of aromatic metabolism. The results reveal that the aquaculture effluent has a high potential for methanogens, but its diverse organic carbon requires a variety of degrading bacteria to participate in improving efficiency. [Chinese Fishery Quality and Standards, 2023, 13(6): 11-18]

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        單玉玲,陳聰聰,程飛,等.養殖尾水對河流沉積物中微生物多樣性的影響[J].中國漁業質量與標準,2023,(6):11-18. SHAN Yuling, CHEN Congcong, CHENG Fei, et al. The effect of aquaculture tail water on microbial diversity in river sediments[J]. Chinese Fishery Quality and Standards,2023,(6):11-18.

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        • 收稿日期:2023-10-14
        • 最后修改日期:2023-11-14
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        • 在線發布日期: 2024-02-01

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