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Malaria Mosquitoes Follow Foot Smells
腳部有氣味容易招蚊子

African Anopheles mosquitoes find us by our carbon-dioxide-rich exhalation. But when they get close they turn away from our heads and dive for our feet—apparently their preferred snack spot.
非洲瘧蚊通過我們富含二氧化碳的呼出物找到我們，它們不叮咬我們的頭部，轉(zhuǎn)而去叮咬我們的腳，顯然那兒才是它們覓食的最佳場所。

Biologist Remco Suer believes he’s figured out the mosquito behavior, for his doctoral thesis at Wageningen University in the Netherlands. And the answer might help in the fight against malaria.
生物學(xué)家瑞姆科休爾就讀于荷蘭瓦赫寧根大學(xué)，他在博士論文中稱他已經(jīng)研究出了瘧蚊的行為特性。休爾的研究成果對于對抗瘧疾可能會有幫助。

Previous research identified odors produced by 10 bacteria that live on human feet and that, in combination, are attractive to mosquitoes at close range. Suer's work shows that nine out of 10 of these odors are picked up by olfactory neurons under hair-like structures on the mosquitoes' mouthparts. Right nearby are some other key neurons—that recognize our CO2 from further away.
早期研究發(fā)現(xiàn)，人們腳部滋生的10種細(xì)菌發(fā)出的臭味共同作用會吸引附近的蚊子。休爾的研究表明這10種細(xì)菌中有9種是由蚊子口器上毛發(fā)狀結(jié)構(gòu)的嗅覺神經(jīng)元發(fā)覺的。這些嗅覺神經(jīng)旁邊就是能夠發(fā)覺遠(yuǎn)距離之外二氧化碳的關(guān)鍵神經(jīng)元。

Suer discovered that five different bacteria scents, when isolated from the mix, actually block those CO2 neurons from doing their job. So if the bacterial odor molecule is present, the CO2 sniffers turn off, presumably to allow the mosquito to concentrate on the close-range foot target.
休爾發(fā)現(xiàn)5種不同的細(xì)菌氣味在單獨作用時，是能夠?qū)ξ米拥亩趸忌窠?jīng)元起阻礙作用的。因此，假如有細(xì)菌氣味分子在，那么蚊子的二氧化碳嗅探器就無法起作用，那么蚊子就只能在它附近覓食了。

Suer imagines traps baited with these feet bacteria to attract mosquitoes and catch them before they can bite. It’s the next best thing to stepping on them.
休爾還設(shè)想利用這些腳部細(xì)菌設(shè)置陷阱，先引誘蚊子過來，再在它們叮咬之前消滅它們。這個計劃不錯，蚊子們，受死吧～～～

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