期刊
VIRUS EVOLUTION
卷 3, 期 1, 页码 -出版社
OXFORD UNIV PRESS
DOI: 10.1093/ve/vex017
关键词
Anelloviridae; Weddell seal; South Polar skua; Ross Sea; Antarctica
类别
资金
- US National Science Foundation (NSF) [ANT-0944411]
- NSF [ANT-0944747]
- US National Science Foundation's Assembling the Tree of Life Program [DEB-1239976]
- Institutional Development Awards (IDeA) Networks of Biomedical Research Excellence Assistantships from National Institute of General Medical Sciences of the National Institutes of Health [P20GM103395]
- Direct For Biological Sciences
- Division Of Environmental Biology [1239976] Funding Source: National Science Foundation
- Directorate For Geosciences
- Division Of Ocean Sciences [1246463] Funding Source: National Science Foundation
The viruses circulating among Antarctic wildlife remain largely unknown. In an effort to identify viruses associated with Weddell seals (Leptonychotes weddellii) inhabiting the Ross Sea, vaginal and nasal swabs, and faecal samples were collected between November 2014 and February 2015. In addition, a Weddell seal kidney and South Polar skua (Stercorarius maccormicki) faeces were opportunistically sampled. Using high throughput sequencing, we identified and recovered 152 anellovirus genomes that share 63-70% genome-wide identities with other pinniped anelloviruses. Genome-wide pairwise comparisons coupled with phylogenetic analysis revealed two novel anellovirus species, tentatively named torque teno Leptonychotes weddellii virus (TTLwV)-1 and -2. TTLwV-1 (n = 133, genomes encompassing 40 genotypes) is highly recombinant, whereas TTLwV-2 (n = 19, genomes encompassing three genotypes) is relatively less recombinant. This study documents ubiquitous TTLwVs among Weddell seals in Antarctica with frequent co-infection by multiple genotypes, however, the role these anelloviruses play in seal health remains unknown.
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