Multidecade Mortality and a Homolog of Hepatitis C Virus in Bald Eagles (Haliaeetus leucocephalus), the National Bird of the USA

被引:13
作者
Goldberg, Tony L. [1 ,2 ]
Sibley, Samuel D. [1 ]
Pinkerton, Marie E. [1 ]
Dunn, Christopher D. [1 ]
Long, Lindsey J. [3 ]
White, LeAnn C. [4 ]
Strom, Sean M. [3 ]
机构
[1] Univ Wisconsin, Dept Pathobiol Sci, Madison, WI 53706 USA
[2] Univ Wisconsin, Global Hlth Inst, Madison, WI 53706 USA
[3] Wisconsin Dept Nat Resources, Madison, WI 53707 USA
[4] US Geol Survey, Natl Wildlife Hlth Ctr, Madison, WI 53711 USA
关键词
FORAGING ECOLOGY; WEB SERVER; PLASMODIUM-ELONGATUM; TOXOPLASMA-GONDII; RAPTORS; PROTEIN; PREVALENCE; WILDLIFE; DISEASE; MYCOBACTERIOSIS;
D O I
10.1038/s41598-019-50580-8
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The bald eagle (Haliaeetus leucocephalus) once experienced near-extinction but has since rebounded. For decades, bald eagles near the Wisconsin River, USA, have experienced a lethal syndrome with characteristic clinical and pathological features but unknown etiology. Here, we describe a novel hepacivirus-like virus (Flaviviridae: Hepacivirus) identified during an investigation of Wisconsin River eagle syndrome (WRES). Bald eagle hepacivirus (BeHV) belongs to a divergent clade of avian viruses that share features with members of the genera Hepacivirus and Pegivirus. BeHV infected 31.9% of eagles spanning 4,254 km of the coterminous USA, with negative strand viral RNA demonstrating active replication in liver tissues. Eagles from Wisconsin were approximately 10-fold more likely to be infected than eagles from elsewhere. Eagle mitochondrial DNA sequences were homogeneous and geographically unstructured, likely reflecting a recent population bottleneck, whereas BeHV envelope gene sequences showed strong population genetic substructure and isolation by distance, suggesting localized transmission. Cophylogenetic analyses showed no congruity between eagles and their viruses, supporting horizontal rather than vertical transmission. These results expand our knowledge of the Flaviviridae, reveal a striking pattern of decoupled host/virus coevolution on a continental scale, and highlight knowledge gaps about health and conservation in even the most iconic of wildlife species.
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页数:12
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