浙江农业学报 ›› 2025, Vol. 37 ›› Issue (5): 1045-1056.DOI: 10.3969/j.issn.1004-1524.20240886

• 动物科学 • 上一篇    下一篇

弧菌噬菌体鸡尾酒制剂对凡纳滨对虾肠道微生物区系的影响

翁歆之1(), 刁奕昕2, 贺洁1, 刘莉3, 沈海钰4, 郭琦3, 沈卫锋3, 韩明明3, 楼宝3, 吕孙建3,*()   

  1. 1.台州市水产技术推广总站,浙江 台州 310005
    2.浙江万里学院 生物与环境学院,浙江 宁波 315100
    3.浙江省农业科学院 水生生物研究所,浙江 杭州 310021
    4.温岭市水产技术推广站,浙江 温岭 317511
  • 收稿日期:2024-10-17 出版日期:2025-05-25 发布日期:2025-06-11
  • 作者简介:翁歆之(1987—),女,浙江台州人,硕士,研究方向为水产养殖和水生动物疫病防控。E-mail:wengxinzhi9@163.com
  • 通讯作者: *吕孙建,E-mail:lvsunjian@163.com
  • 基金资助:
    浙江省产业团队项目“设施化养殖凡纳滨对虾生物安保体系构建与示范”;浙江省重点研发计划(2022C02027)

Effect of Vibrio phage cocktail on the intestinal microbiota of Litopenaeus vannamei

WENG Xinzhi1(), DIAO Yixin2, HE Jie1, LIU Li3, SHEN Haiyu4, GUO Qi3, SHEN Weifeng3, HAN Mingming3, LOU Bao3, LYU Sunjian3,*()   

  1. 1. Taizhou Municipal Aquatic Technology Extension Station, Taizhou 310005, Zhejiang, China
    2. College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo 315100, Zhejiang, China
    3. Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    4. Wenling Municipal Aquatic Technology Extension Station, Taizhou 317511, Zhejiang, China
  • Received:2024-10-17 Online:2025-05-25 Published:2025-06-11

摘要:

本试验旨在研究噬菌体鸡尾酒制剂对凡纳滨对虾(Litopenaeus vannamei)肠道微生物区系的影响。选取帆布池养殖池塘,分离并鉴定环境中的弧菌,同时评估噬菌体鸡尾酒制剂对弧菌的抑菌效果。设置2组试验,每组3个养殖桶重复,噬菌体组饲喂含有噬菌体鸡尾酒制剂的饲料,对照组饲喂普通饲料,利用16S rRNA高通量测序技术测定肠道微生物区系差异。从帆布池分离到3株弧菌,分别命名为DXA(Vibrio. owensii)、DXD(V. harveyi)和DXF(Vibrio sp. VibC-Oc-076),噬菌体鸡尾酒制剂对3株弧菌抑菌效果较好。饲喂含有噬菌体鸡尾酒制剂的凡纳滨对虾肠道内微生物区系丰富度显著升高,且细菌菌群组成结构更稳定;门水平,对照组和噬菌体组优势菌群均为拟杆菌门、变形菌门和疣微菌门细菌,其中噬菌体组拟杆菌门没有明显变化;属水平,噬菌体组噬冷菌属和鲁杰氏菌属细菌丰度先上升后下降,鼠尾菌属细菌丰度先下降后上升。凡纳滨对虾肠道内弧菌属细菌丰度低于0.3%,饲用噬菌体鸡尾酒制剂的第2天弧菌数下降,但与对照组无显著差异。综上,弧菌噬菌体鸡尾酒制剂可以提高凡纳滨对虾肠道微生物区系多样性,而且能稳定肠道微生态环境,但对弧菌属细菌的影响与其本底丰度有一定关系,需要后续更多的研究来阐述其相关性。

关键词: 凡纳滨对虾, 弧菌, 噬菌体鸡尾酒制剂, 微生物区系

Abstract:

This experiment aimed to investigate the effects of a phage cocktail preparation on the intestinal microbiota of Litopenaeus vannamei. Vibrio strains were isolated and identified from canvas-pond aquaculture environments, while the antibacterial efficacy of the phage cocktail against Vibrio was evaluated. Two experimental groups were established, each with three replicate culture tanks. The phage group was fed with a diet containing the phage cocktail preparation, while the control group was fed with a standard diet. Differences in intestinal microbiota were analyzed using 16S rRNA high-throughput sequencing. Three Vibrio strains were isolated from the canvas ponds: DXA (Vibrio owensii), DXD (V. harveyi), and DXF (Vibrio sp. VibC-Oc-076), with the phage cocktail demonstrating effective inhibition against all three strains. Shrimp fed the phage cocktail exhibited significantly increased intestinal microbial richness and more stable bacterial community structures. At the phylum level, Bacteroidota, Proteobacteria, and Verrucomicrobiota dominated both groups, with no significant change observed in Bacteroidota abundance in the phage group. At the genus level, Algoriphagus and Ruegeria abundances initially increased then decreased in the phage group, while Muricauda abundance showed an opposite trend. The Vibrio genus abundance in shrimp intestines remained below 0.3%. Although Vibrio counts decreased on the second day of feeding with the phage cocktail, no significant difference was observed compared to the control group. In conclusion, the Vibrio-targeting phage cocktail enhanced the diversity of intestinal microbiota in L. vannamei and stabilized the gut microecological environment. However, its impact on Vibrio bacteria appeared related to baseline abundance levels, warranting further research to elucidate this correlation.

Key words: Litopenaeus vannamei, Vibrio, phage cocktail, microbiota

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