Genetic diversity of the African malaria vector Anopheles gambiae.

Genetic diversity of the African malaria vector Anopheles gambiae.
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DOI:
10.1038/nature24995
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发表时间:
2017-12-07
期刊:
影响因子:
64.8
通讯作者:
Project coordination
Project coordination
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Anopheles gambiae 1000 Genomes Consortium;Data analysis group;Partner working group;Sample collections—Angola:;Burkina Faso:;Cameroon:;Gabon:;Guinea:;Guinea-Bissau:;Kenya:;Uganda:;Crosses:;Sequencing and data production;Web application development;Project coordination

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非洲疟疾控制的可持续性受到传播疟疾的按蚊对杀虫剂抗药性上升的威胁。为了更深入地了解蚊子种群是如何进化的,我们对从非洲15个地点采样的765份冈比亚按蚊和科氏按蚊标本的基因组进行了测序,在可访问的基因组中识别出超过5000万个单核苷酸多态性。这些数据揭示了复杂的种群结构和基因流动模式,有证据表明古代的扩张,最近的瓶颈,以及有效种群规模的局部变化。在杀虫剂抗性基因中观察到最近选择的强烈信号,多次扫描在很大的地理距离和物种之间传播。设计使用基因驱动的蚊子控制新工具需要考虑到自然蚊子种群中的高水平遗传多样性。
The sustainability of malaria control in Africa is threatened by the rise of insecticide resistance in Anopheles mosquitoes that transmit the disease. To gain a deeper understanding of how mosquito populations are evolving, we sequenced the genomes of 765 specimens of Anopheles gambiae and Anopheles coluzzii sampled from 15 locations across Africa, identifying over 50 million single nucleotide polymorphisms within the accessible genome. These data revealed complex population structure and patterns of gene flow, with evidence of ancient expansions, recent bottlenecks, and local variation in effective population size. Strong signals of recent selection were observed in insecticide resistance genes, with multiple sweeps spreading over large geographical distances and between species. The design of novel tools for mosquito control using gene drive will need to take account of high levels of genetic diversity in natural mosquito populations.
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