The truth about bats - Amy Wray

我是「蝙蝠俠」─ 艾咪‧雷

1,822,045 views ・ 2014-12-16

TED-Ed


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譯者: Harry Chen 審譯者: 瑞文Eleven 林Lim
00:10
Flying through the night, I watch over this world,
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飛翔在夜空之中,我守護著世界,
00:13
a silent guardian, a watchful protector, a dark knight, I'm...
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一名沉默的守衛、警覺的捍衛者、 黑暗的騎士,我就是....
00:22
Okay, fine. So, I'm not Batman. I'm just a bat.
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好啦好啦!我不是蝙蝠俠 我不過就是隻蝙蝠。
00:25
But like Batman, I'm often misunderstood.
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不過就像蝙蝠俠一樣,我總是受人誤會,
00:28
People think I'm scary, strange and dangerous.
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人們認為我是可怕、詭異、危險的,
00:31
If they only knew my story, though, I'd be cheered as a hero.
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只要他們曉得了我的功蹟, 我將會被當成英雄受人仰頌。
00:36
When people think of bats,
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當人們想起蝙蝠時,
00:38
many think of vampires who want to suck their blood.
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許多人就想到 打算吸他們血的吸血鬼,
00:41
But the truth is that out of over 1200 bat species,
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但是真相是:世上超過1,200個品種,
00:44
only three are vampire bats.
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其中只有3種是吸血蝙蝠,
00:47
Out of these three, only one prefers the blood of mammals,
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當中又只有1種嗜吸哺乳類的血,
00:50
and even these bats mostly feed on cattle.
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而牠們大多也只是吸牛血而已,
00:54
Maybe that still doesn't seem so great,
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也許那聽起來也算不上什麼好事;
00:56
but vampire bats can be a great help to humans.
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但吸血蝙蝠能變得對人類極為有益,
01:00
A chemical known as desmoteplase found in vampire bat saliva
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在蝙蝠唾液裡發現名為 「去氨普酶」的化學物質
01:04
helps break down blood clots,
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有助於溶解血栓,
01:06
and is being tested by recovering stroke victims.
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已被測試來治療中風患者。
01:10
Of the remaining 1000+ species of bats, about 70% feed on insects.
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其他一千多種蝙蝠大約有 70%是以昆蟲為食,
01:16
These bats help control the real vampires:
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這些蝙蝠有助於管控 真正的吸血鬼「蚊子」,
01:19
mosquitos, whose nasty bites are not just annoying
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其令人討厭的叮咬不僅煩人,
01:22
but spread diseases, like West Nile virus.
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還會散佈像是西尼羅病毒之類的疾病,
01:25
A single little brown bat can eat 1000 insects every hour,
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一隻小型棕蝠每小時 能吃掉1000隻昆蟲,
01:29
and a colony of Mexican free-tailed bats can eat several tons of moths
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一群墨西哥游離尾蝠一個晚上
01:34
in just one night.
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就可以吃掉數噸重之飛蛾。
01:36
In the United States alone,
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單單在美國,
01:37
bats provide an estimated 3.7 billion dollars worth
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蝙蝠貢獻給農人們估計有
37億美元價值之不收費害蟲控制,
01:41
of free pest control for farmers,
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01:44
which benefits everyone who eats the foods that they grow.
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嘉惠到食用這些食物的每一個人。
01:47
Fruit bats, also called megabats because of their large size,
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果蝠因為牠們的大尺寸 而被稱為巨蝠,
01:51
are important for the role they play in plant pollination.
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牠們在授粉上扮演重要的角色,
01:54
By traveling between flowers while feeding on nectar and fruits,
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當覓食花蜜和果實時, 藉由在花朵間遊走,
01:58
these bats transport the pollen and seeds that help plants reproduce.
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這些蝙蝠運送花粉和種子, 幫助植物繁衍,
02:02
In Southeast Asia, for example,
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以東南亞而說,
02:04
the cave nectar bat is the only pollinator of the durian fruit.
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長舌果蝠是榴槤唯一的授粉者,
02:09
Other bats pollinate peaches, bananas,
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其他蝙蝠授粉給桃子、香蕉,
02:11
and the agave plants that tequila is made from.
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以及用來製造龍舌蘭酒的龍舌蘭花,
02:15
Without them,
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02:15
many of our food plants would be unable to produce the tasty fruits we enjoy.
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要不是牠們,許多食用植物就 無法長出我們喜愛的美味水果。
02:20
As heroes of the ecosystem, bats have their own unique utility belts.
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身為生態系統中的英雄, 蝙蝠配備了獨特的工具腰帶。
02:25
Bats have been a source of inspiration for the design of flying robots
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蝙蝠向來都是設計飛行機器人、
02:29
and even an energy-efficient spy plane,
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甚至是低耗電偵察機的靈感來源,
02:32
as they are the only mammal capable of true powered flight.
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因為牠們是唯一能靠 自身的力量飛行的哺乳類。
02:39
Echolocation, a type of biological sonar, is also used by bats as a way to navigate
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「回聲定位」是一種生物性聲納,
也是被蝙蝠用來導航 及黑暗中尋找獵物。
02:44
and find prey in the dark.
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02:46
Although there's a common misconception that bats are blind,
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儘管有一種普遍的錯誤觀念, 認為蝙蝠看不見,
02:49
in truth, all species of bats have sight.
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事實上各種蝙蝠都有視力,
02:52
And some have even adapted large eyes to see better in dim lighting.
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而且有些甚至還演化成大眼睛, 能在微弱的光線下看得更清楚。
02:57
Many people worry about getting infected by bats,
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許多人擔心受到蝙蝠的感染,
03:00
and like any other animals, bats can carry diseases, like rabies.
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就像其他動物一樣,蝙蝠有可能帶有 像是狂犬病之類的疾病,
03:04
In reality, though, less than .5% of all bats carry this virus.
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即便如此,事實上只有少於0.5% 的蝙蝠帶有狂犬病病毒,
03:09
That's about the same odds as getting the same result on a coin flip
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那約是連續八次投擲硬幣,
03:13
eight times in a row.
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出現同一面的機率。
03:19
The perception that bats are often diseased
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蝙蝠總是帶有疾病的認知
03:21
may come from the fact that sick bats,
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可能來自於病變的蝙蝠,
03:23
who may show unusual behavior, emerge during the daytime,
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這些蝙蝠表現出異常的行為, 像是在白天的時候現踪
03:26
or be unable to fly,
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或是無法飛行,
03:28
are more likely to be encountered by people.
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就比較可能會被人們撞見。
03:31
So a good way to protect yourself is to protect bats as well,
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所以保護自己的方法 也連同可保護蝙蝠,
03:34
keeping them healthy, protecting their habitats,
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那就是:讓牠們健康並保護其棲地,
03:37
and reducing their risk of transmitting disease.
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還有減少牠們傳播疾病的風險。
03:40
In North America, bats are threatened by a devastating sickness
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在北美,蝙蝠受到滅絕性疾病
03:44
called white-nose syndrome.
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白鼻症的威脅,
03:46
This fungal infection causes bats to wake up
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這種真菌感染導致 蝙蝠在冬眠時甦醒,
03:49
while hibernating during a winter.
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03:51
Unable to find food, they expend large amounts of energy,
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無法發現食物又耗費大量的體力,
03:54
and eventually starve to death.
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而最終就因為飢餓死掉了;
03:57
White-nose syndrome has wiped out entire caves full of bats,
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白鼻症可以滅絕掉 整個洞穴裡的蝙蝠,
04:00
with a mortality rate that can exceed 90%.
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死亡率高於90%以上。
04:04
Climate change and habitat destruction
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氣候異變和棲息地破壞,
04:05
also pose serious threats to bat populations.
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也對蝙蝠的族群帶來嚴重的威脅,
04:08
For example, in January 2014, a record heat wave in Australia
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例如澳洲2014年1月 一個創歷史紀錄的熱浪,
04:13
caused over 100,000 bats to die from heat exhaustion.
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造成超過10萬隻蝙蝠 因高溫而死亡,
04:18
Some people just want to watch the world burn,
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有人就是想看到世界燃燒起來;
04:20
and bats all over the world are threatened by damage to the places that we call home,
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全世界的蝙蝠都受到 棲息地破壞的威脅,
04:25
including mangrove swamps,
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包括了紅樹林沼地、原始森林、
04:26
old-growth forests,
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04:28
and, of course, bat caves.
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當然了還有蝙蝠洞穴。
04:31
So even though I'm the hero of the story, I do need to be saved.
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因此即便我是這故事裡的英雄, 我也需要被人拯救,
04:35
And now that you know the true story about us bats,
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現在你曉得了我們的真實故事,
04:38
you can learn how to protect such heroic animals.
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你可以學習如何來保護 這種英雄般的動物,
04:40
Install a properly designed bat box,
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設置一個設計完善的蝙蝠箱子,
04:44
one of the easiest ways to provide shelter for bats.
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最簡單的方式提供蝙蝠住所。
04:47
Discourage the use of pesticides, which can harm bats
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勸人不要使用殺蟲劑, 那是會傷害到蝙蝠,
04:50
when we try to feed on the insects you want to get rid of in the first place.
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當有人想吃昆蟲時會馬上回絕。
04:54
Avoid going into caves where you might disturb hibernating bats,
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避免進入洞穴裡面, 你可能會侵擾到正在冬眠的蝙蝠,
04:57
and always decontaminate your gear after visiting a cave.
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還有在參觀洞穴之後 務必消毒你裝備。
05:02
If you have unwanted bats living in an attic or barn,
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假如在閣樓或糧倉有不請自來的蝙蝠,
05:04
contact your local government to safely and humanely relocate us.
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聯絡當地政府機關 來安全、人道地重新安置我們,
05:09
And if you come across a bat, do not attempt to handle it,
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如果你遇到蝙蝠的話不要抓它,
05:12
but instead, call Animal Control.
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改以打個電話給動物管制局。
05:16
Batman might want to keep his identity secret,
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蝙蝠俠可能想要 保持他的身分不為人知,
05:19
but a great way to help real bats is by continuing to learn about them
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但是幫助真正的蝙蝠的最佳辦法 則是透過持續地認識牠們,
05:23
and spreading the truth that they are real heroes,
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以及傳達牠們真正的英雄事實,
05:27
even if their good deeds are often unseen.
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即便牠們總是善行不為人知。
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