How Culex (Diptera: Culicidae) mosquitoes select and discriminate between potential avian hosts is critical for understanding the epidemiology of West Nile virus. Therefore, the present authors studied the behavioural responses of Culex quinquefasciatus (Say) and Culex pipiens molestus (Forsskål) to headspace volatiles of three avian species [chicken and pigeon (sexes analysed separately), and magpie], presented either alone or in combination with 600 p.p.m. carbon dioxide (CO2 ). The attraction of Cx. quinquefasciatus to the headspace volatiles of both sexes of chicken, and of female pigeon, in combination with CO2 was significantly higher than that achieved by the CO2 and solvent control. Although Cx. p. molestus was attracted to headspace volatiles of chickens and magpies, it was repelled by those of female pigeons when combined with CO2 . An increased effect between the avian volatiles and CO2 was observed for Cx. quinquefasciatus, whereas the addition of CO2 had no effect on the attraction of Cx. p. molestus females. The results of this study demonstrate that Cx. quinquefasciatus and Cx. p. molestus are attracted to the odour of potential avian hosts. Future studies aimed at identifying the bioactive volatile compounds in the headspace of chickens may contribute to the potential development of effective surveillance and control tools against Culex species.

中文翻译：

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室内蚊子对库尔德蚊和鸟类对臭气的行为响应及其对二氧化碳的依赖。

库蚊（Diptera：Culicidae）蚊子如何选择和区分潜在的禽类宿主对于了解西尼罗河病毒的流行病学至关重要。因此，本研究者研究了库蚊（Say）和库珀库克斯（Molex pipiens molestus）（Forsskål）对三种禽类[鸡和鸽子（单独分析），以及喜p]的顶空挥发物的行为响应，它们单独或与其他动物结合使用600 ppm二氧化碳（CO2）。Cx的吸引力。quinquefasciatus对鸡和雌鸽两性的顶空挥发物与CO2的结合显着高于通过CO2和溶剂控制所达到的。虽然Cx。p。s鼠被鸡和喜pies的顶空挥发物所吸引，当与CO2结合时，它被雌鸽驱除。对于Cx，观察到禽类挥发物和CO2之间的作用增加。quinquefasciatus，而添加CO2对Cx的吸引力没有影响。p。鼠女性。这项研究的结果证明了Cx。quinquefasciatus和Cx。p。s鼠被潜在的禽类寄主所吸引。旨在鉴定鸡顶空生物活性挥发性化合物的未来研究可能有助于潜在开发针对库蚊的监视和控制工具。