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我们从哪种鱼进化而来 – 译学馆
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我们从哪种鱼进化而来

Which Fish Did We Evolve From?

你可能听说过 地球上所有的陆栖脊椎动物
You’ve probably heard that every bony land-dwelling creature on Earth evolved from fish
都是由数百年前的鱼类长出四肢 爬出水面进化而来
that grew limbs and crawled out of the water many million years ago.
可如今 海洋 湖泊 河流中超过99%的鱼
And yet, over 99% of the fish in today’s oceans, lakes, and rivers
都有着非常精致的鳍
have incredibly delicate fins, formed
它由一连串的鳍骨和鳍褶构成
by a series of spines covered by a thin web of skin.
很难想象这样的鳍能进化成沉重四肢…
It’s hard to imagine fins like those evolving into sturdy, weight-bearing limbs…
事实上它们也做不到
because they didn’t.
但在很多年前 异种鱼的鳍可以做到
But the fins of a far more foreign fish did.
有颚鱼在进化成硬骨鱼后不久 就形成了两大分支
Very soon after bony fishes first evolved, they branched into two groups –
一类有薄辐鳍的辐鳍鱼
those with flimsy ray-type fins,
另一类有着肉鳍附在
and those with more meaty appendages that were attached to
坚硬鱼骨上的肉鳍鱼
their bodies by a single strong bone.
起初 肉鳍鱼类在数量上远远超过辐鳍鱼类
At first, those so-called lobe-finned fishes far out numbered their ray-finned relatives,
当肉鳍鱼中仅有少数适应浅滩生活时
but just as some of them were becoming adapted for life in the weedy shallows,
全球气候波动造成海洋生物大规模灭绝
global climate fluctuations caused a mass extinction that devastated life in the oceans.
灾难过去 辐鳍鱼重新繁衍生息占领海洋
After the catastrophe, the ray-finned fishes recovered and took over the oceans.
而肉鳍鱼难以再创辉煌
The lobe-fins never recovered, but a few survivors
仅有幸存在浅滩的少数 尝试步行离开海洋
in the shallows managed to find their footing out of the water,
最终真正地成为拥有脊柱 四肢的生物
and eventually gave rise to every backboned, four-limbed creature to
甚至是能跑能跳 能爬能飞的陆栖生物
ever walk, hop, crawl, or fly on land.
嘿 我是埃米莉
Hey, this is Emily.
我想告诉所有支持Patreon的人
I just wanna give a big shout out to all of our supporters on Patreon–
我们喜欢做视频 也真的很感激你们
we love making these videos, and we’re really grateful to
是因为你们 才有了这些视频!
you for making it possible for us to keep making them!
如果你是《分钟地球》的粉丝
If you’re a fan of MinuteEarth but don’t yet
但还没在Patreon上支持我们 请查看
support us on Patreon, please check out our
我们的主页 考虑给我们投币
Patreon page and consider making a pledge.
即使每个视频只支持一美元
Even if it’s just for 1 dollar per video –
再小的支持对我们都是帮助!
those small pledges add up to real support!
如果你是分钟地球的粉丝
And if you’re a MinuteEarth fan who can’t
但不想在Patreon上支持我们 也没关系
support us on Patreon, that’s totally OK too!
记得订阅我们的频道 给家人朋友分享视频噢
Just make sure to subscribe to our channel and share our stuff with your family and friends.
还可以在评论和我们互动 我们愿意倾听你们的声音 谢谢!
And say hi to us in the comments– we love hearing from you. Thanks!

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视频概述

You’ve probably heard that every bony land-dwelling creature on Earth evolved from fish that grew limbs and crawled out of the water many million years ago.

听录译者

收集自网络

翻译译者

blue_shirley

审核员

审核团MG

视频来源

https://www.youtube.com/watch?v=W2ojuZ_s4z8

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