Temporal and spatial mosaics: deep host association and shallow geographic drivers shape genetic structure in a widespread pinworm, Rauschtineria eutamii.

Temporal and spatial mosaics: deep host association and shallow geographic drivers shape genetic structure in a widespread pinworm, Rauschtineria eutamii.
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时空镶嵌:深层宿主关联和浅层地理驱动因素塑造了广泛分布的蛲虫 Rauschtineria eutamii 的遗传结构。

DOI:
10.1111/bij.12833
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发表时间:
2016
期刊:
Biological journal of the Linnean Society. Linnean Society of London
影响因子:
--
通讯作者:
Cook,JosephA
Cook,JosephA
中科院分区:
--
文献类型:
--
作者:
Bell,KayceC;Calhoun,KendallL;Hoberg,EricP;Demboski,JohnR;Cook,JosephA

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气候和宿主人口周期往往塑造寄生虫的遗传多样性和宿主分布,超越了严格的宿主-寄生虫协会的历史过程。我们探讨了主机协会和历史的基础上的线粒体和核序列的评估,以揭示潜在的历史和遗传结构的蛲虫,Rauschtineria eutamii,感染10种北美西部花栗鼠(啮齿目:Tamias,subgenusNeotamias)。Rauschtineria eutamiicontains不同的血统的影响,在北美西部复杂的地形多样性的主机和变化。我们回收了6个单系的。真线粒体进化枝在很大程度上得到多位点一致性树的支持,表现出与其他线虫报道的种内变异相当的分歧水平。系统发育关系表明,R. eutamiicolonized一个祖先血统的西方花栗鼠和血统坚持在历史隔离在divergingNeotamiasspecies或物种组。然而,蛲虫多样化是不一致的和异步的相对主机多样化。其次,模式的浅分歧形成的地理通过事件的情节殖民反映了相互作用的类群脉冲和生态拟合之间的组合在经常性的同域。蛲虫偶尔会感染地理上邻近的宿主物种,然而,宿主转换可能是不稳定的或短暂的,因为在R的更深的历史中没有宿主转换的信号。尤他米。
Climate and host demographic cycling often shape both parasite genetic diversity and host distributions, processes that transcend a history of strict host–parasite association. We explored host associations and histories based on an evaluation of mitochondrial and nuclear sequences to reveal the underlying history and genetic structure of a pinworm,Rauschtineria eutamii, infecting ten species of western North American chipmunks (Rodentia:Tamias, subgenusNeotamias).Rauschtineria eutamiicontains divergent lineages influenced by the diversity of hosts and variation across the complex topography of western North America. We recovered six reciprocally monophyleticR. eutamiimitochondrial clades, largely supported by a multilocus concordance tree, exhibiting divergence levels comparable with intraspecific variation reported for other nematodes. Phylogenetic relationships among pinworm clades suggest thatR. eutamiicolonized an ancestral lineage of western chipmunks and lineages persisted during historical isolation in divergingNeotamiasspecies or species groups. Pinworm diversification, however, is incongruent and asynchronous relative to host diversification. Secondarily, patterns of shallow divergence were shaped by geography through events of episodic colonization reflecting an interaction of taxon pulses and ecological fitting among assemblages in recurrent sympatry. Pinworms occasionally infect geographically proximal host species; however, host switching may be unstable or ephemeral, as there is no signal of host switching in the deeper history ofR. eutamii.
对可手术淋巴结阳性乳腺癌女性进行五种和三种药物化疗和化学免疫治疗的随机试验。
DOI: 10.1200/jco.1983.1.2.138
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