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为什么蚊子不咬别人,只咬我? – 译学馆
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为什么蚊子不咬别人,只咬我?

Why Do Mosquitoes Bite Some People More Than Others? | What The FAQs | NowThis

是否想过蚊子总咬你而不咬你朋友的原因
(蚊子的嗡嗡声)
(mosquito buzzing)
这个问题我问了自己一辈子
Well I’ve been asking myselfthat question my whole life.
对于一些人 夏天是阳光下的乐趣
For some, summer means fun in the sun,
但如果你像我一样 夏天就是躲避想吸你血
but if you like me, it’s all about escaping a constant threat of
的微小飞行生物的持续威胁
为更了解这些讨厌的吸血者
To learn more about these pesky bloodsuckers,
我联系了一位昆虫学家
I reached out an entomologist
是个专门研究昆虫的科学家
it’s a scientist who studies insects,
一起去探究为什么像我这样的人
to find out why some people, like myself,
比其他人更容易被蚊子叮咬
are more prone to mosquitobites than others.
-本质上是同一个原因
– It’s really essentially along the same lines
就如同你的狗认出你 是通过气味
as how your dog knows you, it’s smell.
(轻快的旋律)
(upbeat music)
为什么蚊子会咬我?
除去极其烦人的声音
– Other than beingannoying AF,
你知道蚊子其实还是个杀人狂魔吗?
did you know mosquitoes are actually mass murderers?
2016年 全世界每天有超1400人死亡
In 2016, more than 1,400people died every day
死因是蚊子叮咬而引起的疾病
from illnesses caused bymosquito bites worldwide.
经过客观分析
To put that in perspective,
那年地球上被蚊子咬死的人比谋杀致死的多
并且都是由于雌性蚊子的感染所致
And they all communicate by the famale mosquito
因为只有雌性蚊子才咬人
because females are theonly ones that bite.
-[男]雄性蚊子只吃素
– [Man] The male mosquitoeats only vegetable food.
雌性蚊子喜欢血液 并且能吃就不放过
The female mosquito likesblood and eats it when she can.
-尽管雄性和雌性蚊子都吸食花蜜
– While both sexes feed on nectar,
雌性蚊子吸人或其他哺乳动物的血液
females bite and draw the blood of humans or other mammals
来获取所需的蛋白质和铁
to get the protein and iron needed
以供生长和产卵
to grow and lay eggs.
那它们如何一下子就找到你
-在远处它们就能看到你
– From a distance, theywill see where you are
同时它们还能闻到你的气味
and then they can smellyou at the same time,
和你呼吸的时候呼出的二氧化碳
the carbon dioxide that you’reexuding when you breathe.
它们所做的就是螺旋朝你飞来
And what they do is theyfollow a cone towards you,
有点像鲨鱼 它们会曲折前进
kinda like the sharksdo, and they’ll zigzag
然后靠近你
and come towards you
并尽快到人体温暖 出汗的地方
and as soon as they get in the general vicinityof the human body warmth, perspiration,
这些就是你吸引它们的原因
things like that are what draw it to you at that point.
-专家说蚊子能侦测到二氧化碳和呼出气体
– Experts say mosquitoes candetect the carbon dioxide and the draw exhaling
在至少100英尺以外
如果呼出的都是CO2
What If all exhaling is CO2,
那它们怎么选择叮谁呢?
then how do they choose who to bite?
研究者把蚊子的着陆偏好
Researchers link this landing preference,
和我们所说的两种血型联系起来
as they call it two blood types.
在研究中 日本研究者发现蚊子
During tests, Japaneseresearchers saw mosquitoes
停留在O型血人身上的数量
land on people with Type people O blood
差不多是A血型的
两倍
as people type A
吸B型血蚊子的数量 则是介于两者之间
people type B blood, they fell somewhere in the middle.
(按按钮声)
(button clicking)
(机械运作声)
(projector clattering)
想听个有趣的事实吗?
Wanna hear a fun fact?
研究者们还将蚊子叮咬和啤酒消耗联系起来
Researchers have also linked mosquito bites to beer consumption.
喝一杯啤酒后 蚊子更有可能落在你的皮肤上
因为酒精会让你呼吸更粗重
and that’s because alcoholmakes you breathe harder
出汗更多 因此 会产生更多的CO2
and sweat more, therefore,producing more CO2.
所以你可能需要考虑
So you might want to consider
在夏天改变你对饮料的喜好
switching out your drink preference during the summer
如果你经常被蚊子咬的话
if you’re highly targeted by mosquitoes.
(蚊子的嗡嗡声)
(mosquitoes buzzing)
你非常吸引蚊子的原因之一
Another reason mosquitoes mightbe highly attracted to you
是你的气味或你皮肤上的化学物质
is your scent or thechemicals on your skin.
-现大约有300多种
– Now there’s about 300,a little over 300
不同的人体气味
different odors that humans emanate,
其中一些对蚊子很有吸引力
and some of them are attractive to mosquitoes,
有一些则不吸引蚊子
some of them are not attractive to mosquitoes.
这被认为是基因调节所致
It’s thought to be genetically mediate
并且这与你身体消化某些物质的方式有关
and it has something to do with the way that your body digests certain materials
和你皮肤上的生态系统有关系
and the way the floraand fauna on your skin,
你知道 细菌和真菌是如何代谢
you know, bacteria,fungi, how they metabolize
你皮肤上的一些分泌物的吗?
some of the secretionsyou have on your skin.
而这就是吸引蚊子的原因
And that is what draws mosquitoes to you.
(喷雾声)
(spray hissing)
(轻快的音乐)
(quirky music)
-人们通常用杀虫喷雾或驱蚊剂来对付蚊子
– Mosquitoes are generally fought by using insecticide sprays or repellents.
取决于你用的量
Depending on the amount you apply,
它能掩盖你的气味 从而迷惑蚊子
that masks your smell and confuses mosquitoes
误认为你的血液不可口
into thinking yourblood is not appetizing.
但据伦敦远足和热带医学院的研究人员称
But according to researchers at the London School of Hiking and Tropical Medicine,
这可能并不总是有效
你知道 避蚊胺是驱蚊剂中主要原料之一
You see, DEET is one of the main ingredientsin insect repellents,
而在对北美蚊子的研究过程中
and during the study of North American mosquitoes,
他们发现
researches found in
蚊子在接触避蚊胺之后的
三个小时内就产生了免疫
under three hours of being exposed to it.
(蚊子嗡嗡声)(拍打皮肤声)
(mosquito buzzing)(skin slapping)
那么我们如何阻止这些吸血者?
So how do we stop thesebloodsuckers in their tracks?
-穿长袖长裤
– Wear long sleeves, long pants.
尽量穿的宽松点
Make sure you’re wearing them loosely,
因为蚊子一样能透过像Speedos一样的衣服咬你
because mosquitoes can and will bite through tight clothing like Speedos.
通常来说 穿浅色衣服是个好主意
It’s generally a good ideato wear lighter colors.
事实上蚊子是被白与黑的对比所吸引
They’re actually attracted to the contrast between white and black.
你穿白衣服并不意味着你不会被蚊子叮咬
Just because you wear white doesn’t mean you’re not going to get bitten by mosquitoes,
只是可能性变小了
but you’re just a little less likely to.
-现在你应该明白了
– So there you have it.
蚊子喜欢你的血液
If mosquitoes like your blood,
可能是因为你产生的CO2比你朋友多
it’s probably because you produce more CO2 than your friends.
你无法改变你的血型
There’s nothing you coulddo about your blood type,
但你能搭配你衣着的颜色
but you could coordinate the colors you wear
呆在空调区或较冷的地方来控制出汗
and manage your sweat by staying in air conditioned areas or cooler spots.
一些研究报告说几个小时后避蚊胺将失效
And even though some studiesreport DEET being ineffective after a few hours,
所以一定要确保你带了防蚊喷雾
make sure you carry your mosquito spray.
毕竟 蚊子是世界上最致命的动物
After all, mosquitoes are theworld’s deadliest animals.
(轻快的旋律)
(upbeat music)
大家好 谢谢观看本周的真相栏目
Hay gays,thinks watching this week’s episode of the fact
希望你喜欢
Hope you enjoyed,
如果你喜欢 请点个赞
if you did, make sure you hit the like button
并订阅我们的频道
and subscribe to our channel
有好奇的科学问题
Got weird about the science questions,
动动你的手指 在屏幕下方留言
shoot your shot,drop a comment below.
也许我们会把它做成一期节目
And who knows,we might cover it.
记得每周二来看新节目
Be sure to catch more of the season every Tuesday.

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视频概述

为什么一些人更容易被蚊子咬?这是有科学原因的。人体的温度,呼出的二氧化碳,不同的血型以及人身体的气味都是重要的因素。

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收集自网络

翻译译者

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视频来源

https://www.youtube.com/watch?v=woA28HX17sQ

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