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Rabbit hemorrhagic disease virus detected in Pico, Azores, Portugal, revealed a unique endemic strain with more than 17 years of independent evolution

机译:在葡萄牙亚速尔群岛的笔克(Pico)发现的兔出血性疾病病毒揭示了一种独特的地方性毒株,具有超过17年的独立进化

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摘要

Rabbit hemorrhagic disease is caused by a calicivirus, rabbit hemorrhagic disease virus (RHDV), which is responsible for high mortality in domestic and wild European rabbits (Oryctolagus cuniculus). RHDV strains were sequenced from wild European rabbits (Oryctolagus cuniculus algirus) collected in the Azorean island of Pico, Portugal. Phylogenetic analyses showed that the Pico RHDV strains diverge from all of the others described so far, but cluster with the genogroups 1-5 (G1-G5). The genetic distance between the Pico RHDV sequences and each G1, G2 and G3-G5 genogroup (~0.08) is compatible with an RHDV introduction at least 17 years ago. Our results show that in Pico, RHDV is the outcome of an independent evolution from the original RHDV strain that appeared in its European rabbit population. These are the first sequences of RHDV obtained in the subspecies O. c. algirus, outside of its original region, the Iberian Peninsula. Furthermore, we discuss the risk of rabbit translocations from the Azores to the Iberian Peninsula, where the rabbit wild populations are suffering high mortalities.
机译:兔出血性疾病是由杯状病毒,兔出血性疾病病毒(RHDV)引起的,该病毒导致家养和野生欧洲家兔(穴孔兔(Oryctolagus cuniculus))的高死亡率。 RHDV毒株是从在葡萄牙皮库亚速尔群岛采集的欧洲野兔(Oryctolagus cuniculus algirus)测序的。系统发育分析表明,到目前为止,Pico RHDV菌株与所有其他菌株均存在差异,但与1-5基因组(G1-G5)聚集在一起。 Pico RHDV序列与每个G1,G2和G3-G5基因组(〜0.08)之间的遗传距离与至少17年前引入RHDV是兼容的。我们的结果表明,在Pico中,RHDV是从其欧洲兔种群中出现的原始RHDV株独立进化而来的结果。这些是在亚种O.c中获得的RHDV的第一序列。阿尔及尔,位于伊比利亚半岛的原始区域之外。此外,我们讨论了兔子从亚速尔群岛转移到伊比利亚半岛的风险,那里的兔子野生种群死亡率很高。

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