Looking at Tardigrade Sperm and Other Reproducing Swimmers
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- เผยแพร่เมื่อ 30 พ.ค. 2021
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Not all hypotheses need to be good. In fact, many of them are terrible. It’s just that when you’re trying to understand the world, you might find yourself believing that there are tiny humans living inside the heads of sperm, and we're here to tell you, that's not how it works.
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SOURCES:
www.google.com/books/edition/...
www.researchgate.net/publicat...
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royalsocietypublishing.org/do...
royalsocietypublishing.org/do...
embryo.asu.edu/handle/10776/1924
embryo.asu.edu/pages/preforma...
link.springer.com/article/10....
www.nature.com/articles/nrmic...
www.nature.com/articles/nrm3370
www.ncbi.nlm.nih.gov/pmc/arti... - วิทยาศาสตร์และเทคโนโลยี
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Can you guys do a video about the division of chloroplast and mitochondria?
What are the little cluster/rock shaped things floating around all over the insides of their bodies? I feel like I misunderstood something lol
I was going to say not only is the homunculus partially accurate due to genetic code but have you ever seen a child's skull? We are born with all our child and adult teeth it's creepy looking
I feel like we're getting trolled with the constant popups of "Gonads filled with sperm" text
Nutsack
I agree!
Yeah, for them claiming they are not obsessed with this, the amount of times they said the word sperm unnecessary tells a different sperm sperm story sperm.
Ligma gonads.
Microscopic tea bagging.
Ah, yes, tardigrade sprem. That is exactly what was on my mind at 6 am on a Tuesday. How did you know???
Weirdly enough we both had the same thought at the exactly same time a month apart.
@@chiet97 and a year later.. here I am at the same time
@@jrmckim And one month after that so am I.
😂👍
WHAT THE FUCK THAT'S EXACTLY MY CASE TOO
*Alexander Klepnev, in a moment of climactic genius:* hmm, I should put this under my microscope
Climatic genius 🤣
And now the whole world is playing a part in he's joyfull strockes of a ginius.
Not the footage you want credit towards you be so visible xD
F O R
S C I E N C E ! !
@@mixiekins SCIENTIFIC CUMMIES
05:00 I was so surprise to see the sperm cells while recording this, it was truly a mindblowing moment!
-James
That sounds like an awesome microscope session!
I really didn't expect to be shown that you can see the tardigrade sperm's tails (flagella). Really cool
You must be the great master of microscopes 😊
I never imagined living to this day to see a microscopic bear creature and its sperm.
I think I saw a rare, one-of-a-kind Hankculus partway through the video.
Herman-culus 😂
Ok, I already ordered the Hank pin from Bizarre Beasts, so where's the link to get Hank-munculus socks???
I thought “Hankunculus”
That was prime sock material, make it happen guys!
6:33 I love that dude who went up to the zooaspores and then noped out
Finally an organism I can relate to
I read that as "orgasm I can relate to"
Note to self: Remember to delete history after this video.
Remember; no matter who we are or where we're from, we're all great swimmers!
Keep in mind that the fastest swimmers release acrosome enzymes and die. The fastest swimmers would never fertilize the egg because it takes quite a bit of acrosome enzymes to get through the zona peullucida (in other words the first 200 sperm or so release the enzymes and die). Also, capacitance takes 6 to 8 hours. So the one that "wins" is not the fast swimmer but rather 1) adequate swimmer 2) lucky 3)good at surviving long enough. So yeah, endurance and luck but not speed.
(I know you are just having fun, but don't worry, so am I)
@CL Melonshark That is an excellent question/point! I feel like way back in my very first biology course at university, the professor said that the egg may have properties that influence which sperm fertilizes the egg (I forget the details). This makes intuitive sense to me considering how cells usually interact with each other (compatible protein receptors). However, later I tried to google more information about this and was unable to locate any info/research supporting this. So I'm definitely open minded to this being the case but I didn't turn up any source specifically saying that (I should try again sometime though, this was quite awhile ago). Fertilization does indeed occur in the fallopian tube, for sure that part is the case.
I mean homosapians are quite bad at swimming compared to other mammals tbh (yes im taking this comment literally and not as a sperm joke because its bloody 7:42am and i work midnights XD)
Genuinely made my laugh a bit
10/10
I was not expecting to find out yet another weird thing about Pythagoras.
He couldn’t just stop at math
i didnt recognize hank's voice at first because i'm so used to him sound like he's telling me sperm facts from the other side of an auditorium
I swear he is like the David Attenborough of TH-cam science videos
Jesus! That homunculus' gaping face looks like some kind of fever dream mutant straight out of an episode of Adventure Time.
Another great one, but when are you guys going to make a tardigrade pin?! Those would sell so fast. A hydra pin would be awesome too! Cheers
Agreed.
I second that.
I like to think that the Alexander Klepnev is credited because he created the sperm, not necessarily because he filmed it.
Like..?
Came up with the term of sperm
Or like.. I mean he technically does create sperm
@@pokepoke1889 He was the first person to have created a sperm cell.
Ha ha, the homunculus tardigrade "Inception" sequence made me laugh. I really enjoy these videos. Thanks for making them!
"Why, it's Tardigrades *_ALL_*_ the way down_ !!"
Damn.. That water bear... Had some fun the night before..
This used to be a meditative channel 😄
Thank-you for a couple of chuckles! Tardigrades are one of my favorite creatures to watch.
Ordinarily, the music is just a sci-fi-esque mood-setter, but around 0:43 the base hits in a way vaguely reminiscent of "Drop it Like it's Hot" during the mention of the tardigrade's body full of sperm and even after watching a bunch of episodes, I can't stop thinking about how funny this is.
Amazing episode! Thank you both for continuing to educate about the microcosmos!
You have already taught me much more than 8 years of biology at school.
wow the microscopy is gorgeous in this ep! (i mean, it always is, but these are particularly vivid). After your video on the filters, Hank, looking at videos I'm like I THINK I KNOW HOW JAMES DID THAT BACKGROUND & LIGHTING OF THE CRITTER! :D We cannot wait to get our microscope, and thoroughly enjoy all your updates!
"What are you watching son?"
"Nothing..."
*sPerMz*
Great video as always, with an amazing history lesson about the times before the Napoleon. Such a profound moment
Ever just look at a human sperm cell and think "that used to be me" lol
m.th-cam.com/video/htgOruzCMrg/w-d-xo.html
Take a shot every time 'Gonads filled with sperm' is on the screen.
The image of the wee person inside the sperm made me crack up and hum a line from a song I heard on Dr Demento ages ago
"Just lookin' for a womb to rent"
Also the idea of everything coming from one's father was a thing well before Pythagoras, I think? But it was a theological construct (...or maybe I mean cultural idea). My memory is awful fuzzy, over two decades after learning about this notion, but apparently it was a whole thing - one didn't just get "the sins of the father" but also all the glories, ambitions, and so forth. And, one could never be greater than one's father, at least in the sense of the traditional belief. So the idea was floating around, one way or another, for a long long time.
We laugh now at the ideas from hundreds of years ago, but you are right, one has to start somewhere!
This is a particularly *unique* episode
@@osmosisjones4912 *hmmm* welp human species have certainly derivered compared to neandarthals
Tardigrades have huge gonads relative to body size
I love all Hank's channels❗️
OMG, yet *another* tardigrade video! Just kidding, though I'm sure they raise this wonderful channel's searchability I'll accept it as long as the content is good. :)
Nice video super optics
Woah, they are like a living Mandelbrot set. It's mind blowing 🤯
I'm a white sperm which has become brown and speaks 3 languages fluently. Aren't I wonderful??
Hank's back!
I love the channel.
This episode is sponsored by Fabulous; an app that helps you form healthy habits that stick....now onto the video topic: sperm.
this intro beat is knocking. i was watching, i mean listening to this on the 170 freeway and the intro beat had my Subie STI rocking. folks had no clue i was bobbing my head to a dude talking about tardigrade skeet.
Please stop watching TH-cam on the highway. Sincerely, the rest of us.
Love the intro music
Great video
Could you do plant tissue cultures in the future? 😅 It would be quite interesting to get content discussing that!
Oh wow that 1000x zoom, so cool!
One of those videos, when you are curious about the comments as much as about the actual content, ;) I wasn't disappointed.
Those are the ones most worth watching :)
"This is not an organism... it's an orgasm..." 😳🤦♂️
You are brilliant ❤❤❤
Some dude just 🥜 on the slide and said “here you go, take a look”
More history related comparisons!!! The line about Napoleon conquering Europe not knowing how babies were really made was almost Zen Koan level of enlightening
Wow I didnt even recognize Hank not talking in his usual high energy voice
Scientists: you can't see a single cell
Me who can see several billion at a time: well yes but actually no
Man this video was nuts
👉😎👉
m.youtube.com/watch?c=htgOruzCMrg
i love the utter absolute Dunking on those theories that turned out wrong
I like the small human in sperm idea 😂😂 I'm going with that from now on !
How does this video not already have 1m views?
Really fascinating. Just from reading historical texts, I came across the idea of spermism before, but never knew this idea had a specific name. It lends new light to, say, passages in the Bible that refer to women being fertile or "barren", like a field. People of antiquity took this idea literally, with the "seed" being thought of as complete and just needing the proper place to grow.
What kind of microscope & camera system are you using ? The optics are outstanding !
Badass content thanks.
Damn, I always imagined tardigrades had giant gonads. Just never wanted to see them to verify. Now you made me see it against my will! lol.
Been trying to get some info on this DIC process. Of course these are GREAT videos but my question is this; if one has a DIC ready scope, is there much pre or post work done to get these kind of videos/images or do you get your specimen and go at it?
1:44
The most fun sample to gather
Kill me
"just...chock full of it" same brother
Nice of you to credit the donor
Very much spoken in a carl sagen-esk inflection
I wonder how Pythagoras would react to what really happens with human reproduction? Would they rebel? Would they accept the important role of the ovum and the uterus etc.?
Why are you calling Pythagoras a group of people lol
It’s common practice among the youngs to use gender neutral terminology. I find that only bigots, pedants, and ESL find issue enough with it.
8:47 My brain got confused for a second and I almost expected to hear "swimming off, to new pockets... of Spacetime"
Hank is this the one you recorded after too much coffee? ...makes sense.
The way he talks instantly striked me, hello hank😎
What are those orb thingies the tardigrates are filled with?
Though, to be fair, there was an opposition to spermism, called ovism, claimed of course that small versions of humans and animals are inside the female ovum. Generally equally wrong assumption, but maybe just a little bit closer to truth, as all the mitochondria (and plasmids, in the case of the plants) in zygote are from ovum.
@Matthew Morycinski There were dual contribution theories, and even a belief that women had 'seed' too. There were many, many, competing hypotheses back in the day.
How and where did you get the samples?
Patreons.
I believe their samples are gathered in Poland, which is where the microscopes actually are.
The persons IG referenced at the end, is the collector and photographer, my understanding is most are found in pond water, or puddles with occasional foraging to the coast and known locations?
You should read the credits at the top left when it's a video from someone else.
@@maracachucho8701 reading? That would be really hard to do. ;)
James has some explaining to do..
00:45 - I've used Google sound search and Shazam, but 'Not Recognised'... I've even gone through Andrew Huang's TH-cam music collection, but STILL cant find the title to the track played at this time (or in many of these entertaining and interesting looks into the miniature world)... PLEASE help, Thank you 😎
Thank you for calling it "The Great Famine"!
Thanks🔬
That tardigrade ata the beginning is me at the end of no nut November
I was going to joke about the tardigrade being "young, dumb, & full of cum".
You should make a video on stephanoceros fimbriatus witch is a rotifer that is very big and very strange
The tardigrade is the cutest creature in the universe of microscopic organisms.
Тихоходка самое милое создание во вселенной микроскопических организмов.
How does one keep microbial life alive in a jar? Hoping for a vid on the topic one day =^.^=
Next Pizzamas will feature a t-shirt of "Hank Sperm," or is it "Sperm Hank." I guess if it's "Pizza John" It's got to be "Sperm Hank."
Please, can somebody explain me what is happening on minute 7:00? I need yo know how the male tardigrade fertilize de eggs
Dang she had a lot of eggs! Do they always have that many??
Enjoyed your video and I gave it a Thumbs Up
4:55 Hank, sorry for the super cheap jokes, but would that mean it's actually "Tardigrades all the way down" ? :-D
Amazing photography! So what are all those "rocks" moving around inside the tardigrade ? I was able to spot certain things like the eyes and the muscles that move the legs, but overall the animal looks like a balloon full of rocks and the rocks appear to slide all over the place inside the creature. Obviously, they aren't really rocks so what are they? I thought maybe eggs at first but there was also a view of another speciman that had huge smooth round globs located mostly in the rear half of the body so I assume those were eggs but the front half had some rocks too. The male was loaded with rocks from end to end.
the cells
I love this channel, I really do… but this is an incredibly important question I’m sure many would like to ask but aren’t brave enough to do so..
“Credit: Alexander Klepnev” is that credit for the footage..? Or…. Credit…. For the footage?
1:41 s e m i n a l f l u i d
Alexander Klepnev: "I love looking at my own spunk under a microscope."
what are those pebble like things in tarigrades' bodies?
What are the floaty blobs in the tardigrades limbs?
In case anyone here wants to know a more detailed history of humanity and it's struggle trying to understand sperm and egg cells...I would highly recommend reading=
"The Seeds of Life"
- Book by=Edward Dolnick
Dolnick (also known for his book'The Clockwork Universe') traces the winding tale of European understanding of conception biology from the 16th through the 19th century, when the merging of sperm and egg was first physically seen. He examines the theories popularized by scientific luminaries in each period, following advances in anatomy, microscopy, and scientific method as well as changes in philosophy about the relationships between men and women, humans and animals, and the living world and God. Dolnick honors the history of ideas that seem ludicrous today, including that of preformation of tiny versions of all human bodies at the beginning of creation, and makes the point that even the most brilliant investigators can miss salient information they don’t expect, as when Vesalius observed ovarian follicles a century before de Graaf but dismissed them as irrelevant. Substantive background on the work of such figures as William Harvey and Luigi Galvani may feel like a diversion to readers only interested in reproductive biology, but Dolnick composes a cohesive narrative around his central question while noting its appeal as a side topic to key thinkers in science.
Had human egg cells been observed to exist when Pythagoras believed that, was it known to exist? If not I get why Pythagoras believed that, it wasnt know that 2 parts were needed
This is just way too interesting to me
I can't help but feel those blobs moving through their bodies as if it was my own body.
1:00 It almost looks like it is using its arm muscles to do something internally? Is it digesting stuff inside itself by moving its arms? Its arms must be connected to its digestive system or something. Why is it moving like that?
Crazy how a 55µm creature only lives to explode and create a vast, spectacular universe; You.
Does the heat from the light source hurt the organisms ?
It can, but so would excessive cold, so it's up to the operator to keep them happy. LED light sources are of course much more efficient than traditional incandescents.
that tardigrade sure is a spunky fellow!
early ideas of how reproduction worked were wild. Another theory was that sperm makes period blood congeal into a baby
Fractal universe revealed
Wow, that's amazing! Also, if you see this, I AM YOU'RE BIGGEST FAN!!!