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  • Sperms aren't the mindless, flagellum-wielding dolts that you thought they were.


  • Life is pretty tough for those little guys.


  • Hey dudes, Trace here with the lowdown on your sperms' struggles for DNews.

    大家好,我是 DNews 的 Trace,今天我要揭露精子鬥爭的真相。

  • Sperm are the male gamete, the counterpart to the female's egg.


  • When a sperm reaches the inside of an egg, a zygote is created, which is the first step on the path to a fetus.


  • But to reach that goal, sperm have to overcome a lot of different problems, one being there are millions of other sperm in there.


  • And they're like, "Watch out, Dude!"


  • "I'm tryin' to get to the egg!"


  • For instance, we've evolved what science calls 'sperm allocation'.


  • As the point of sex is to get your sperm to the egg first and thus spread your genes, sperm allocation theory was one of nature's ways of getting the most bang for your buck.


  • If a male believes his female sexual partner has committed infidelity, or if he's simply spent a long while away from the partner, his sperm count will increase when they finally pair up!


  • The authors of a study published in "Current Directions in Psychological Science" believe this is why males get lustful feelings after being away from their partner for a while.


  • They want to make sure that they get back there and get some sperm in there as soon as possible to compete.


  • Once inside the woman, sperm continue their struggles.


  • This has to do with their creation. Sperm are formed based on how the species fertilize and how much sexual competition is present.


  • It was assumed that the bigger the sperm, the faster they would be.


  • Bigger and stronger is better, right? Not so much.


  • A study published in the journal "Evolution" uses Bonobos as an example.


  • These apes share almost 99 percent of their DNA with humans and have a lot of sex with lots of different partners.

    這些類人猿與人類的基因相似度高達 99%,而且牠們有非常多性伴侶。

  • The competition has evolved sperm with bigger heads and smaller tails.


  • The larger sperm were actually slower.


  • The researchers found only animals who fertilize outside of their bodies have large-sperm advantages.


  • The shorter head and longer tail of fish and squid sperm were super fast and thus got to the egg first.


  • Yeah, bro!


  • Then there's the theory that there are two kinds of sperm: the goal scorers, and the ones who play defense.


  • In humans, of the 250 million sperm cells released into the female reproductive system, 27 percent are defective, right off the bat.

    人類釋放到女性生殖系統中的 2.5 隻精子中,有 27% 是天生具有缺陷的。

  • The normally oval-shaped head is spherical or quite pointy in parts, the tails are malformed or whatever.


  • This theory of so-called "kamikaze sperm" also comes back to competition between mates.


  • The idea that these malformed sperm hang back to block other competing mates' sperm, thus ensuring the first male's domination of fertilization!


  • Since the hypothesis was proposed in the 80s, scientists have tried and failed to reproduce their findings. So, while we're pretty sure this isn't real, it is still being tested.

    科學家自假設在 80 年代被提出後,就一直試圖證實其真實性,但都以失敗告終。即使我們很確定這不是真的,但它仍在測試中。

  • Most scientists now believe the 27 percent defect rate occurs because of poor quality control in sperm creation, which is a little embarrassing.

    現在大多數科學家認為,27% 的先天缺陷率是精子製造過程中質量控管不佳造成的,這令人有點難為情。

  • Dudes, this is our big moment. We're half-assing out there!


  • 110-percent, c'mon!

    使出 110% 的力氣,加油!

  • Of the millions of sperms released, remember you were the fastest.


  • So, tell us your strategies down in the big empty white box below and subscribe!


  • Also, double check that you're still following us on Twitter @ATDNews. We made some changes.

    另外,請再次確認你是否已訂閱 Twitter @ATDNews。我們做了一些調整。

  • You'll get behind-the-scenes pictures and some other cool stuff that sometimes doesn't make it into an episode. Thanks a lot for watching, see you next time!


Sperms aren't the mindless, flagellum-wielding dolts that you thought they were.


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什麼?!精子之間居然會競爭!(The Sperm Struggle is Real)

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    lolitc 發佈於 2023 年 06 月 21 日