Evolution of mosquito preference for humans linked to an odorant receptor.

Evolution of mosquito preference for humans linked to an odorant receptor.
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DOI:
10.1038/nature13964
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发表时间:
2014-11-13
期刊:
影响因子:
64.8
通讯作者:
Vosshall, Leslie B.
Vosshall, Leslie B.
中科院分区:
综合性期刊1区
文献类型:
--
作者:
McBride, Carolyn S.;Baier, Felix;Omondi, Aman B.;Spitzer, Sarabeth A.;Lutomiah, Joel;Sang, Rosemary;Ignell, Rickard;Vosshall, Leslie B.

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雌性蚊子是人类疾病的主要媒介,最危险的是那些优先叮咬人类的蚊子。埃及伊蚊的一种“家养”形式已经进化成专门叮咬人类,并且是登革热、黄热病和基孔肯雅病毒的主要世界性载体。家庭形式共存的祖先,动物叮咬'森林'形式沿沿着肯尼亚海岸。我们收集了这两种形式,建立了实验室菌落,并记录了人类与动物气味偏好的显著差异。我们进一步表明,国内蚊子对人类气味偏好的演变与气味受体AaegOr4的表达和配体敏感性的增加密切相关,我们发现AaegOr4识别人类气味中高水平存在的化合物。我们的研究结果提供了一个罕见的基因有助于行为进化的例子,并提供了深入了解疾病传播蚊子如何专门针对人类的见解。
Female mosquitoes are major vectors of human disease and the most dangerous are those that preferentially bite humans. A ‘domestic’ form of the mosquito Aedes aegypti has evolved to specialize in biting humans and is the major worldwide vector of dengue, yellow fever, and Chikungunya viruses. The domestic form coexists with an ancestral, animal-biting ‘forest’ form along the coast of Kenya. We collected the two forms, established laboratory colonies, and document striking divergence in preference for human versus animal odour. We further show that the evolution of preference for human odour in domestic mosquitoes is tightly linked to increases in the expression and ligand-sensitivity of the odorant receptor AaegOr4, which we found recognises a compound present at high levels in human odour. Our results provide a rare example of a gene contributing to behavioural evolution and provide insight into how disease-vectoring mosquitoes came to specialise on humans.
人类的影响塑造了埃及埃及,登革热和黄热病蚊子的历史和最新进化。
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