首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Pathways of expansion and multiple introductions illustrated by large genetic differentiation among worldwide populations of the southern house mosquito.
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Pathways of expansion and multiple introductions illustrated by large genetic differentiation among worldwide populations of the southern house mosquito.

机译:南部家庭蚊子在全世界范围内的大量遗传分化说明了扩展途径和多次引入。

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摘要

The southern house mosquito Culex quinquefasciatus is a principal vector of human lymphatic filariasis, several encephalitides (including West Nile virus), avian malaria, and poxvirus, but its importance as a vector varies considerably among regions. This species has spread with humans and is ubiquitous in tropical urban and suburban environments. This was the first mosquito to reach Hawaii and we performed a worldwide genetic survey using micro-satellite loci to identify its source. Our analyses showed divergent Old World and New World genetic signatures in Cx. quinquefasciatus with further distinctions between east and west African, Asian, and Pacific populations that correlate with the epidemiology of human filariasis. We found that in Hawaii south Pacific mosquitoes have largely replaced the original New World introduction of Cx. quinquefasciatus, consistent with their reported expansion to higher elevations. We hypothesize worldwide pathways of expansion of this disease vector.
机译:南部家蝇库克斯库克斯库克斯蚊是人类淋巴丝虫病,几种脑炎(包括西尼罗河病毒),禽类疟疾和痘病毒的主要载体,但其作为载体的重要性在不同地区之间存在很大差异。该物种已在人类中传播,并在热带城市和郊区环境中普遍存在。这是第一个到达夏威夷的蚊子,我们使用微卫星基因座进行了全球性基因调查,以确定其来源。我们的分析显示Cx中旧世界和新世界的遗传特征不同。 quinquefasciatus在东非和西非,亚洲和太平洋人口之间有进一步的区别,与人类丝虫病的流行病学相关。我们发现,在夏威夷,南太平洋的蚊子已基本取代了最初在《新世界》中引入的Cx。 quinquefasciatus,与其报道的向更高海拔的扩张一致。我们假设该疾病载体的全球扩展途径。

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