Variation in host preferences of malaria mosquitoes is mediated by skin bacterial volatiles
Variation in host preferences of malaria mosquitoes is mediated by skin bacterial volatiles
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DOI：
10.1111/mve.12242
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发表时间：
2017-09-01
影响因子：
1.9
通讯作者：
Verhulst, N. O.
中科院分区：
文献类型：
--
作者：
Busula, A. O.;Takken, W.;Verhulst, N. O.
冈比亚按蚊复合体中嗜热蚊的寄主选择性是由皮肤细菌挥发物介导的。然而，目前尚不清楚这些蚊子是否对来自非人类宿主物种的皮肤细菌挥发物有不同的反应。在这项研究中，两种疟疾蚊子在一个。冈比亚复合体，冈比亚按蚊s.s.（后来，安。冈比亚按蚊（Anopheles gambiae）和阿拉伯按蚊（Anopheles arabiensis）对皮肤细菌挥发物的敏感性。从人，牛和鸡皮肤收集的皮肤细菌显着增加陷阱捕获;陷阱含有从人皮肤收集的细菌捕获的安的比例最高。冈比亚和安。阿拉伯的。含有人类来源细菌的陷阱捕获了显着更高比例的An。冈比亚比安。阿拉伯，而从鸡的细菌挥发物吸引了显着更高数量的安。arabiensis比An.冈比亚。此外，一。gambiae表现出专门的响应挥发物从四个特定的细菌，而一个。阿拉伯曲霉对所有测试的细菌种类的反应相同。因此，皮肤细菌挥发物可能在引导不同宿主偏好的蚊子方面发挥重要作用。这些细菌挥发物的鉴定有助于形成一种气味混合物，吸引具有不同宿主偏好的蚊子。
The host preferences of the anthropophilic mosquito species in the Anopheles gambiae complex (Diptera: Culicidae) are mediated by skin bacterial volatiles. However, it is not known whether these mosquitoes respond differentially to skin bacterial volatiles from non-human host species. In this study, the responses of two malaria mosquito species in the An. gambiae complex, Anopheles gambiae s.s. (here-after, An. gambiae) and Anopheles arabiensis, with different host preferences, to volatiles released from skin bacteria were tested. Skin bacteria collected from human, cow and chicken skin significantly increased trap catches; traps containing bacteria collected from human skin caught the highest proportions of An. gambiae and An. arabiensis. Traps with bacteria of human origin caught a significantly higher proportion of An. gambiae than of An. arabiensis, whereas bacterial volatiles from the chicken attracted significantly higher numbers of An. arabiensis than of An. gambiae. Additionally, An. gambiae showed a specialized response to volatiles from four specific bacteria, whereas An. arabiensis responded equally to all species of bacteria tested. Skin bacterial volatiles may therefore play important roles in guiding mosquitoes with different host preferences. The identification of these bacterial volatiles can contribute to the development of an odour blend that attracts mosquitoes with different host preferences.