Horse-, bird-, and human-seeking behavior and seasonal abundance of mosquitoes in a West Nile virus focus of southern France
Horse-, bird-, and human-seeking behavior and seasonal abundance of mosquitoes in a West Nile virus focus of southern France
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DOI：
10.1603/0022-2585(2006)43
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发表时间：
2006-09-01
影响因子：
2.1
通讯作者：
Bicout, D. J.
中科院分区：
文献类型：
--
作者：
Balenghien, T.;Fouque, F.;Bicout, D. J.
自2000年以来，在卡马格大区（法国南部）定期发现西尼罗病毒（黄病毒科、黄病毒属、西尼罗病毒）的流行。西尼罗河病毒是从莫德斯菲卡尔库蚊中分离出来的，该库蚊在20世纪60年代马暴发后被认为是法国南部的主要病媒。最近西尼罗河病毒在Cx以外的传播。莫德斯特分布表明存在其他病媒。为了研究潜在的西尼罗河病毒媒介，从2004年5月至10月在Camargue的两个地点（一个地点在潮湿地区，另一个地点在干燥地区）每周进行了马饵和鸟饵诱捕器和人落蚊采集，这两个地点均因其过去的西尼罗河病毒传播历史而选择。在湿地，诱鸟器捕获的种类最多的是库蚊和库蚊。modestus;这两种细菌在马和人类身上的比例也较低。诱马诱蚊和人陆诱蚊中最丰富的种类为卡斯伊蚊（Pallas）、vexans伊蚊（Meigen）和hycan按蚊（Pallas）；其中一些品种偶尔在夏末用禽血采集。maculipenismeigen senssulato按蚊是丰富的马饲料，但很少被采集到降落在人类诱饵上，从未含有鸟类血液。在干地，Cx。鸟诱和马诱的种类最多的是淡蚊。分析了这些物种的季节和昼夜动态，并讨论了它们在卡马尔格传播西尼罗河病毒的可能性。
After 35 yr of disease absence, West Nile virus (family Flaviviridae, genus Flavivirus, WNV) circulation has been regularly detected in the Camargue region (southern France) since 2000. WNV was isolated from Culex modestus Ficalbi, which was considered the main vector in southern France after horse outbreaks in the 1960s. Recent WNV transmissions outside of the Cx. modestus distribution suggested the existence of other vectors. To study potential WNV vectors, horse- and bird-baited traps and human landing collections of mosquitoes were carried out weekly from May to October 2004 at two Camargue sites: one site in a wet area and the other site in a dry area, both chosen for their past history of WNV transmission. At the wet site, the most abundant species in bird-baited traps were Culex pipiens L. and Cx. modestus; both species also were found in lower proportions on horses and humans. The most abundant species in horse-baited traps and human landing collections were Aedes caspius (Pallas), Aedes vexans (Meigen), and Anopheles hyrcanus (Pallas) sensu lato; some of these species were occasionally collected with avian blood at the end of the summer. Anopheles maculipennis Meigen sensu lato was an abundant horse feeder, but it was rarely collected landing on human bait and never contained avian blood. At the dry site, Cx. pipiens was the most abundant species in bird- and horse-baited traps. The seasonal and circadian dynamics of these species are analyzed, and their potential in WNV transmission in Camargue discussed.