Novel viral and microbial species in a translocated Toutouwai (Petroica longipes) population from Aotearoa/New Zealand.

Rebecca K French, Zoë L Stone, Kevin A Parker, Edward C Holmes
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引用次数: 3

Abstract

Background: Translocation is a common tool in wildlife management and its implementation has resulted in many conservation successes. During translocations, any associated infectious agents are moved with their wildlife hosts. Accordingly, translocations can present a risk of infectious disease emergence, although they also provide an opportunity to restore natural infectious communities ('infectome') and mitigate the long-term risks of reduced natural resistance.

Methods: We used metatranscriptomic sequencing to characterise the cloacal infectome of 41 toutouwai (North Island robin, Petroica longipes) that were translocated to establish a new population within the North Island of New Zealand. We also screened for pathogenic bacteria, fungi and parasites.

Results: Although we did not detect any known avian diseases, which is a positive outcome for the translocated toutouwai population, we identified a number of novel viruses of interest, including a novel avian hepatovirus, as well as a divergent calici-like virus and four hepe-like viruses of which the host species is unknown. We also revealed a novel spirochete bacterium and a coccidian eukaryotic parasite.

Conclusions: The presumably non-pathogenic viruses and microbial species identified here support the idea that most microorganisms likely do not cause disease in their hosts, and that translocations could serve to help restore and maintain native infectious communities. We advise greater surveillance of infectious communities of both native and non-native wildlife before and after translocations to better understand the impact, positive or negative, that such movements may have on both host and infectome ecology.

新西兰奥特罗阿地区一个易位的头outouwai (Petroica longipes)种群中的新病毒和微生物种。
背景:易位是野生动物管理的一种常用手段,它的实施取得了许多保护成功。在易位过程中,任何相关的传染原都与其野生宿主一起移动。因此,易位可能带来传染病出现的风险,尽管它们也提供了恢复自然感染群落("感染组")和减轻自然抵抗力下降的长期风险的机会。方法:我们使用超转录组测序来表征41个外乡人(北岛知更鸟,Petroica longipes)的局部感染,这些外乡人被转移到新西兰北岛建立一个新的种群。我们还筛选了致病菌、真菌和寄生虫。结果:虽然我们没有检测到任何已知的禽类疾病,这对易位的外来人口来说是一个积极的结果,但我们发现了一些令人感兴趣的新型病毒,包括一种新型禽肝病毒,以及一种分化的钙样病毒和四种宿主物种未知的肝炎样病毒。我们还发现了一种新的螺旋体细菌和球虫真核寄生虫。结论:这里发现的推测为非致病性的病毒和微生物物种支持这样的观点,即大多数微生物可能不会在其宿主中引起疾病,并且易位可能有助于恢复和维持本地感染群落。我们建议在迁移前后对本地和非本地野生动物的感染群落进行更大的监测,以更好地了解这种迁移可能对宿主和感染群生态产生的积极或消极影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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