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人类消亡殆尽时什么生物还能存活?

What Animal Will Survive When Everyone Dies?

嘿大家好 欢迎来到Life Noggin
Hey, there. Welcome to Life Noggin.
如果没有特殊的衣服
Wouldn’t it be cool if there was something
某物也能在太空中生存 这不是很酷吗
that can survive space without a special suit?
事实证明 确实有这么厉害的东西
Well, it turns out there is something that awesome,
它叫做缓步类动物
and it’s called a tardigrade.
它们也许听起来像你
They may sound like something you get
上学迟到后得到的东西
when you’re late for school,
但这些小家伙基本上都是超级英雄
but these little guys are basically superheroes.
让我们来共同发现
Let’s find out why.
缓步类动物 或更可爱地被称为
Tardigrades, or more adorably known as
水熊或苔藓猪
water bears and moss piglets,
是一类两侧对称
are a phylum of small invertebrates
有四对腿的
that are bilaterally symmetrical
小型无脊椎动物
and have four pairs of legs.
他们喜欢吃像植物细胞液和细菌之类的东西
They like to munch on things like plant cell fluid and bacteria
尽力躲避它们的天敌
and try their best to avoid their predators,
天敌也包括其他缓步类动物
which can include other tardigrades.
没错 有一些缓步类动物是食肉的
That’s right. Some tardigrades are cannibals.
讨论信任问题
Talk about trust issues.
但是为什么这些小家伙在科学上如此厉害
But just why are these little guys so scientifically awesome?
事实证明 我们的苔藓猪朋友具有超弹力
Well, it turns out that our moss piglet friends are super resilient
在一些极端环境中也能生存
and can survive some pretty extreme conditions.
它们能应对像零下200度
They can handle super cold environments,
的超低温环境
like ones colder than -200℃
也能应对150度的超高温环境
and also ones as hot around 150℃.
它们也能经受极端辐射
They can also survive extreme radiation,
缺氧和强压力
oxygen depletion, and also severe pressures.
一些科学家甚至认为它们会存活得比人类还久
Some scientists even think that they will outlive humanity.
缓步动物也被认为是极少数能
Tardigrades are also thought of as one of the few life forms
在太空的严峻环境下存活的生命形式
that can survive the harsh conditions of space
因为他们就生活在低地轨道上
since they have lived at low Earth orbit.
在2007年 一组缓步动物的样本暴露在
In 2007, samples of tardigrades were exposed
真空和两种不同光谱的紫外线范围下
to a space vacuum and two different ultraviolet radiation spectral ranges.
所有的缓步动物样本都暴露在
All of the tardigrade samples were exposed
太阳电离辐射和银河宇宙辐射下
to both ionizing solar and galactic cosmic radiation,
听起来都很酷
and both sound really cool.
太阳辐射对它们的生存机会不利
The solar radiation negatively affected their chance of survival,
但惊喜地是 有些小家伙
but amazingly, some of these little fellas
仍能存活下来
were still able to survive.
它们到底是如何做到的
So how the heck do they do it?
这多亏了一个叫隐生现象的过程
Well, it’s all thanks to a process called cryptobiosis.
通过这个 缓步动物几乎停止了所有代谢过程
Through this, tardigrades practically stop all metabolic processes,
并以这种状态生存好多年
and can survive for years in this state.
它们可以干成一个被科学家称之为
They can dry up into a lifeless ball
“大酒桶”的无生命迹象的球
in what scientists call a tun.
它们保持这种状态
They stay in this state
直到再次接触到水
until they can come into contact with water again.
这基本上是装傻的终极版本
It’s basically the extreme version of playing possum.
我不知道你们怎么想 但我很想见见
I don’t know about you, but I would love to meet
这些超级英雄中的其中一个
one of these superheroes.
噢好吧 这很简单 谢谢动画绘制人
Oh. Well, that was easy. Thanks animator.
但我希望我在现实世界
But I would love for my human friends
中的朋友也能遇见一个
in the real world to meet one, too.
事实上如果你有一个足够好的显微镜
Well actually, it turns out you might be able to
你也许能看到
if you have a good enough microscope.
根据一些文献 包括显赫的
According to some sources, including the awesomely named
“缓步动物猎人的国际社会”
“International Society of Tardigrade Hunters”,
如果你想亲自看见一只缓步动物
if you want to see a tardigrade for yourself,
出去找一些地衣和苔藓
go out and find some lichen or moss
然后放置在浅盘里
and place it in a shallow dish.
让它在蒸馏水中浸泡一夜
Let it soak in distilled water overnight,
然后早晨在透明的盘中挤青苔
and in the morning squeeze the moss over a transparent dish,
例如培养皿 以收集水
like a petri dish, to collect the water.
运气好的话 你也许可以在
With any luck, you might be able
显微镜下观察水时
to examine the water under a microscope
看到这些厉害的水熊
and get to meet one of these awesome water bears.
我要给我的起名为海姆利希
I’m going to name mine Heimlich.
你是如何看待这些小家伙的
So what do you think about these little guys?
你想养一只作为宠物吗
Would you keep one as a pet?
你会给你的缓步动物起名吗
What would you name your tardigrade?
在下方的评论拦中告诉我
Let me know in the comment section below.
如果你想了解更多关于微小生物的信息
And if you are craving even more information on tiny little creatures,
那么你一定要看看我们在
then you should definitely check out the video we did
多细胞生命何时开始时 所做的视频
on when multicellular life began.
显然这不是突然发生的
It’s clear it didn’t happen all at once.
主要理论是多细胞生物
The main theory is that multicellular organisms
是从细胞聚集在一起时开始的
started out as cells grouped together in colonies.
一如往常 我是Blocko
As always, my name is Blocko.
这是Life Noggin
This has been Life Noggin.
不要忘记继续思考
Don’t forget to keep on thinking.

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译制信息
视频概述

缓步动物

听录译者

日落蓝

翻译译者

Sherry

审核员

审核团审核员XD

视频来源

https://www.youtube.com/watch?v=DHYRxML2SpA

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