It is peak mosquito season, and while some lucky outdoor venturers seem unperturbed by the tiny insects, others appear to be relentlessly assaulted. Scientists are trying to understand what makes certain humans more attractive to the bugs. One expert, molecular vector biologist L.J. Zwiebel, a professor of biological sciences at Vanderbilt University, weighs in.
眼下正是蚊子活动的高峰期,有些在室外活动的幸运儿好像并不受这种小小昆虫的侵扰,而另一些人则似乎不断遭到它们的侵袭。科学家们就什么原因导致某些人更吸引这些恼人的东西进行了探索。其中一名专家──范德堡大学(Vanderbilt University)生物学教授、分子载体生物学家L.J.茨维伯尔(L. J. Zwiebel)也加入了讨论。
Sweet Smell of Success
人体气味 Mosquitoes find their mammalian prey through sensing the heat and carbon dioxide mammals emit. Pregnant women and larger people are sometimes the victim of multiple attacks, since they exert more energy than the average person.
蚊子通过感知哺乳动物释放出的热量和二氧化碳来寻找它们的“猎物”。有时候,怀孕女性与体型较大的人会遭到蚊子多次侵袭,因为他们会比普通人散发出更多能量。
Mosquitoes are also guided by their sense of smell. 'Despite what my grandmother told me, I don't have sweet blood,' says Dr. Zwiebel, since mosquitoes cannot distinguish blood quality. 'Mosquitoes are attracted to our human odor, and that is largely a consequence of the bacteria on our skin,' says Dr. Zwiebel. The 'flora and fauna on our skin' also smell appetizing to mosquitoes, says Dr. Zweibel, and these can increase when we sweat or spend a lot of time outdoors.
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2020-09-15
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