文献类型： 外文期刊
作者： Xu, Tingting 1 ; Zhao, Xianyong 1 ; Loch, Thomas 4 ; Zhu, Jiancheng 1 ; Wang, Wei 1 ; Wang, Xinliang 1 ; Wang, Chong 1 ; Fan, Gangzhou 1 ; Hao, Bin 5 ; Zhang, Jichang 1 ; Zhao, Wenxiu 1 ; Bondad-Reantaso, Melba G. 5 ; Alday-Sanz, Victoria 6 ; Zhang, Qingli 1 ;
作者机构： 1.Chinese Acad Fishery Sci, State Key Lab Mariculture Biobreeding & Sustainabl, Qingdao 266071, Peoples R China
2.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Maricultural Organism Dis Control, Minist Agr Qingdao Key Lab Mariculture Epidemiol &, Qingdao 266071, Peoples R China
3.Laoshan Lab, Lab Marine Fisheries Sci & Food Prod Proc, Qingdao 266237, Peoples R China
4.Michigan State Univ, Aquat Anim Hlth Lab, E Lansing, MI 48824 USA
5.Food & Agr Org United Nations FAO, Fisheries & Aquaculture Div, I-00153 Rome, Italy
6.Natl Aquaculture Grp NAQUA, Breeding Programs & Res & Dev, Jeddah 21541, Saudi Arabia
关键词：
RNA virome; Antarctic krill
期刊名称：MARINE LIFE SCIENCE & TECHNOLOGY （ 影响因子：5.3； 五年影响因子：5.3 ）
ISSN： 2096-6490
年卷期： 2025 年 7 卷 1 期
页码：
收录情况： SCI
摘要： Antarctic krill Euphausia superba, one of the most abundant species on the planet, is a keystone species of the Southern Ocean ecosystem. In the present study, we analyzed the RNA virome of Antarctic krill via metatranscription methods. The results showed that only 0.39% (49/12, 558) of the resultant unigenes could be assigned to known viral taxa, which were most similar to 17 known viruses, including nine invertebrate viruses, two vertebrate viruses, three protozoan viruses and three mycoviruses. However, most of the detected viruses possessed low amino acid similarity with counterparts in the viral databases. Penaeus vannamei picornavirus (PvPV; Family Picornaviridae) and covert mortality nodavirus (CMNV; Family Nodaviridae) were the two most abundant viruses in the Antarctic krill RNA virome. Notably, PvPV and CMNV are known pathogens to multiple aquatic animals according to epidemiological survey and exposure experiments, whereby PvPV positive krill caused clinical symptoms and histopathological lesions to P. vannamei and similarly, CMNV infection altered the swimming and feeding behavior of parent marine medaka Oryzias melastigma and caused tissue damage and even spinal curvature of the offspring. Results herein reveal, for the first time, the high abundance and taxonomic diversity of viruses in Antarctic krill while simultaneously highlighting the risk of an important virus reservoir to global aquaculture, and the potential impact on animals in the Antarctic ecosystem.
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