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为研究十足目虹彩病毒1(DIV1)对罗氏沼虾肠道菌群的影响,对罗氏沼虾进行人工感染实验,采集攻毒前后罗氏沼虾肠道、肝胰腺、鳃及肌肉组织,并利用qPCR技术检测罗氏沼虾肝胰腺、鳃及肌肉组织中的DIV1病毒载量,利用16S rRNA高通量测序对比研究健康罗氏沼虾和发病罗氏沼虾肠道菌群的组成及多样性。结果表明,罗氏沼虾感染DIV1后的72 h内其肝胰腺、鳃及肌肉组织中的病毒迅速增殖,并且DIV1感染会导致罗氏沼虾肠道菌群发生变化,感染DIV1后肠道内其他条件致病菌的丰度较对照组显著上升。健康罗氏沼虾肠道中的优势类群为厚壁菌门,其次为变形菌门,优势菌属为乳球菌属。而发病罗氏沼虾肠道中的优势类群则为变形菌门,其次为拟杆菌门和厚壁菌门,优势菌属为金黄杆菌属。研究结果有助于了解十足目虹彩病毒1对罗氏沼虾肠道细菌群落的影响,并为罗氏沼虾的健康管理和养殖提供依据。
Abstract:To study the effect of Decarboid iridovirus 1 (DIV1) on the intestinal flora of Macrobrachium rosenbergii, artificial infection experiment was conducted on M. rosenbergii. The intestinal, hepatopancreas, gills and muscle tissues of M. rosenbergii before and after infection were collected, and the viral load of DIV1 in the hepatopancreas, gills and muscle tissues of M. rosenbergii was detected by qPCR technology. The composition and diversity of the intestinal microbiota of healthy and diseased M. rosenbergii individuals were comparatively analyzed by 16S rRNA high-throughput sequencing. The results showed that within 72 hours after the infection of M. rosenbergii with DIV1, the virus rapidly proliferated in the hepatopancreas, gills and muscle tissues of M. rosenbergii. Moreover, DIV1 infection would cause changes in the intestinal flora of M. rosenbergii, and the abundance of pathogenic bacteria under other conditions in the intestine after DIV1 infection was significantly higher than that of the control group. The dominant group in the intestinal tract of healthy M. rosenbergii was the Firmicutes, followed by the Proteobacteria, and the dominant genus was Lactococcus. The dominant group in the intestinal tract of the diseased M. rosenbergii was Proteobacteria, followed by Bacteroidetes and Firmicutes, and the dominant genus was Chryseobacterium. The research results are helpful for understanding the influence of DIV1 on the intestinal bacterial community of M. rosenbergii and provide a basis for the health management and farming of M. rosenbergii.
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基本信息:
中图分类号:S945.41
引用信息:
[1]江浩,陈静,姚嘉赟,等.十足目虹彩病毒1对罗氏沼虾肠道菌群的影响[J].经济动物学报().
基金信息:
浙江省“尖兵领雁+X”研发攻关计划(2024C02005); 宁波市科技计划“科创甬江2035”项目(2024Z278-04); 浙江省科研院所扶持专项(2025YSZX01,2025YSZX04); 湖州市重点研发计划项目农业“双强”专项(2023ZD2032)
2025-10-20
2025-10-20
2025-10-20