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波多黎各西尼罗河病毒传播期间的蚊子(双翅目:蚊科)血源。

Mosquito (Diptera: Culicidae) bloodmeal sources during a period of West Nile virus transmission in Puerto Rico.

机构信息

Dengue Branch, CDC, 1324 Calle Canada, Puerto Rico 00920.

出版信息

J Med Entomol. 2011 May;48(3):701-4. doi: 10.1603/ME10281.

Abstract

Host bloodmeals of indigenous Caribbean mosquitoes have not been studied previously. We identified vertebrate DNA in 90 blood-engorged mosquitoes belonging to four genera (Aedes, Culex, Deinocerites, and Uranotaenia) and 12 species that were collected in Puerto Rico within a geographic and temporal focus of West Nile virus transmission in 2007. It was found that 62 (68.8%) bloodmeals were from reptiles, 18 (20.0%) from birds, and 10 (11.1%) from mammals. Only one bloodmeal of 18 derived from Culex (Culex) species was passerine, suggesting a preference for nonpasserine birds and other vertebrates (i.e., reptiles) among the candidate WNV vectors. We interpret the results with respect to vectorial capacity for West Nile virus, an emerging arbovirus throughout the Caribbean Basin.

摘要

先前尚未对加勒比地区本土蚊虫的吸血宿主进行研究。我们从 2007 年在波多黎各采集的 90 只吸血饱胀的蚊虫中鉴定出了属于 4 个属(埃及伊蚊、库蚊、巨蚊和库蚊)和 12 个种的脊椎动物 DNA,这些蚊虫的采集范围在西尼罗河病毒传播的地理和时间范围内。结果发现,62 份(68.8%)血餐来自爬行动物,18 份(20.0%)来自鸟类,10 份(11.1%)来自哺乳动物。只有 18 份源自库蚊(库蚊)的血餐是雀形目动物,这表明候选西尼罗河病毒载体更喜欢非雀形目鸟类和其他脊椎动物(即爬行动物)。我们根据西尼罗河病毒的媒介能力来解释这些结果,西尼罗河病毒是整个加勒比地区新兴的虫媒病毒。

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