The Indecisive Evolution of Gastrotrichs
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- čas přidán 22. 01. 2023
- The Gastrotrich has long been a personal favorite microbe of several members of the Journey to the Microcosmos crew. But while we were able to see a lot with the microscopes we had at the time, James-our master of microscopes-has made some significant upgrades since then and this means that we are now able to see gastrotrichs in a whole new light.
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This video has been dubbed using an artificial voice via aloud.area120.google.com to increase accessibility. You can change the audio track language in the Settings menu. - Věda a technologie
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Gastrotrichs are my favorite animals and I worked and still work on them (mostly marine) :) I am so glad to see another video about them :) However, I am almost sure the cover picture and the animal at 3:02 isn't a gastrotrich but a 'Dimorphilus', meaning it is a marine Annelida (and I worked on them as well) :)
As for the expansion to freshwater gastrotrichs, it happened also in Macrodasyida although they are way less common like the genus 'Redudasys', which is also parthenogenetic as much as we know. They are less common in Europe but begin to be found in Brasil now. And for the question of freshwater chaetonotids, the molecular phylogeny is quite unstable so far (I manipulated these datasets :) ). What is sure is that chaetonotids were marine at first, but when in the phylogenetic tree they started to be freshwater is not the easy to infer :) It is almost pretty sure, as you say, that they returned, probably several time to marine environment :) There are also other marine parthenogenetic gastrotrichs like 'Urodasys' (Macrodasyida) or 'Draculiciteria' (Chaetonotida). So it is a mess, and the modalities of reproduction in gastrotrichs are quite diverse!
Mad respects seeing you here! Read your paper on Diuronotus. Keep up the awesome work!
@@Pongant funny to meet fellow gastrotrichologists here ! When the project "International Association for Gastrotrichology" will be launched, we should have the opportunity to meet :) Glad you liked the paper, it was the one I put the most heart in in my PhD thesis :) What are you doing on X. intermedia ? :)
The updated microscopes make these little friends so fuzzy and cuddly looking!
they are cute ^,^
idk the nematodes scare me lmao
Like worm on a string!
it's amazing to think that we as humans are very distantly related, at some early point in our evolution we had a common ancestor
I mean technically it’s not fuzz
Do you think the organisms are bothered when they bump into each other like that? Sometimes it looks like they squish quite far into another!
I wonder every day what their consciousness is like
Maybe they don't feel
God, I love to see the questing energy and the tactile capacities of this adorable little animal! Thank you all so much!
I only watch this channel, I have no education in microbiology, but I do watch and rewatch all episodes of this particular channel. I said 'a gastrotrichia egg' the second I saw it. Not a long ago I wasn't even aware of their existence. Tell me this ins't real life education. Thank you Journey to the Micrcomos for all those journeys.
Makes me think I would love an episode about salinity in the microcosmos
I clicked thinking, "Meh, I wont watch it all, it wont hold my interest", And here I am at the end of the video, sitting in utter disbelief that it's over. So damn captivating. Love this channel.
Thank you for taking us on this (and many other) journeys 🥰
I wish I could give multiple likes because all of this is just so beautiful, and it is so nice to see the upgrades you guys have made in the microscopes, so as hank says thank you to all the patrons for supporting this channel (coming from someone who currently is a poor student🤣)
the animal at 3:14, which is also the thumbnail…i believe is not a gastrotrich! it looks very similar to an unusual neotenic polychaete worm called Dinophilus taeniatus (of which i was the first to report populations in the western hemisphere!) however it isn’t a complete match, i do still believe it to be very closely related, most definitely in the Haplodrili order!!! which is a very very fascinating order of unusual polychaete worms which i totally think you should do a video on!!!
The otherworldly beauty of this is stunning
Thank you for making these fascinating videos. There is only one thing wrong with them...they're over to soon!! I'm always left wanting more which is why some days I binge watch them. They are awsome!
Interesting segment! These guys do seem to have personalities!
I would love to more about the microscopes and the challenges faced by getting these images if you are willing to share. Great channel. Thank you.
A beautiful cosmos in micro world indeed.
I'd love to see you guys on Mastodon too! The community is growing.
Gastrotrichs are one of my favorite obscure, itty-bitty animals.
Watching them move and seek, it’s hard to believe they don’t have a brain the way we understand a brain to be. They seem curious and thoughtful and like they need affection.
The picture quality is truly amazing!
Always very fascinating content🔬🦠
Been a while since we've seen these lil guys!
i only now noticed the subtle reverb from the narrator's voice... it fits so well
Thank you James 🫡
The background music gave me anxiety for some reason, instead of the usual relaxation. Missing the soothing sounds and the calm voice that helps me to wind down and puts me to sleep.
I love these videos...period
Lovely little animal 😌
Anyone else ever think about what a bowl full of nothing but tartagrades would look like? Like could you just dip your spoon into a bowl of tartagrades and eat them?
Squishy gummie bears
It's fascinating and I love it. It's as good as the Kalahari plains. It could be improve by explaining what exactly is happening besides the obvious of them rattling around eating. A few basics explained would help immensely. Please 👊☘️
I need full 30 minute episodes of these
You mean I can microdose Journey to the Microcosmos?!
Also that gastrotrich with the yellow in it looks like a real d***(head). Lol! Hope you find the levity funny. Thanks for all of your amazing, wondrous, hard work and for another great video! 😄
I saw 2 of these the first time I looked for beasties in my undergrad, a personal fave for me too
They’re going to a party! It’s a birthday party. It’s your birthday party. They love you very very very very very much.
It's like a flatworm, but pointy
Some researches put them sister groups, but there are actually few morphological common points. The only thing which has been found is similarities in micro-RNA. However, the result of both being closely related is not found in all phylogenies :)
Fantastic video as always. I just have one comment on the name of the Order. It is called Chaetonotida (type Genus Chaetonotus), not Chaetonida.
Does your plan objectives fit Swift Stellar 1?
I want to make sure before ordering them. Thanks
What microskope do you use? Or which one would you recommend?
the hydra shirt!! in xl!!
What are those big organisms that the gastrotrich has trouble navigating around at the end? Nematodes? Some giant single-celled organism?
They look like some ciliates :)
CORRECTION: We messed up our own username! You can find us on Tiktok at www.tiktok.com/@journeytothemicrocosmos
you also kinda messed up this comment as well lol!
Ah, flogging tiktok now, are you? How disappointing.
@@dziban303 Not really. I think it could be a positive over the sensory-overload pieces of $#!t viewers would often run into.
*this is just my take on TikTok's average set of videos and is not necessarily true. it could be vastly different from what I think it is, so please don't hate on it too early >v
Was the video a little sped up compared to normal?
hi guys, can i ask you a question? As far as you know does exists endosymbionts microalgae that can colonize fungal hypaes? thanks
The musical upgrade is fabulous!
Microcosmos should have those as plushy merchandise
Cool.
yes
Which microscope are you using?
Forgive my OCD... but the "Journey to the Microcosmos" logo in the beginning of every video... I can't help but notice that the 'O' in Journey is literally pixels away from being the top of a lowercase 'I' for the word 'Microcosmos'... If that makes sense. Condense 'Journey to the' by a tiny fraction - and maybe even color the O and I a diff color to make the lowercase 'i' stand out... eh just thoughts
id edge a bet the first to make that change were pushed on land into lakes via tidal waves, where they were able to adapt and change as the salt water slowly diluted back to fresh water
them girls is hungry
gastrotrich - what does that mean, hairy stomach?
Yes, the ciliation is, for most of them limited to the ventral side :) This is what helps them tho crawl or swim most of the time :) They are colloquially called "hairy backs" but it doesn't have anything to do with "Gastrotricha", and is quite confusing, it is because many Chaetonotida have dorsal spines made of cuticle, which gives an impression of hair :)
@@nicolasbekkouche7153 thanks for the info!
What do you use?
2:58-3:28 shows an interstitial annelid Dinophilus, but not a gastrotrich.
Tictok??? That's low. Esp for a great channel.
Really digging the music in this one, for some reason.
E pensar que quando tomámos um copo de água eles podem estar dentro!!!!
the little chicken legs on 'im!
MISTAKE. ATTENTION
Typo mistake in the TikTok address. Minute 00:18. The address is missing an "s" for -coSmos.
Please, be advised.
Yay
the future is here
Ah, the narrator is an E G G enthusiast.
🙏🏽❤️😃
Aren’t eggs single celled when they are first laid?
Aren't they chaetonotids? And shouldn't "ch" sound Greek "k"?
That's how we say it among gastrotrichologists ;)
Watch Microbehunter - he learn you something .
Hey microcosmos you should check out a game called bionix it's about microbes
music too loud, but otherwise fantastic vid
Has anything ever evolved from macro to micro?
Many. Myxozoans are the smallest animals and evolved from macroscopic jellyfish-like ancestors.
Plenty of times, there are several families of microscopic Annelida, some cases in molluscs (Rhodope and some Aplacophora), many groups of arthropods like copepods, mites, microscopic wasps, ostracods etc. And there are even other cases of non parasitic cnidarian like Halammohydra on top of Myxosoa that @lovelynepenthe cited :) Actually going from macro to micro and the other way around is quite common :)
@@nicolasbekkouche7153 Your comment made my week.
Yeast is decendended from multicellular ancestors.
¿Qué rayos? 🤯 Está en español.
2:40 Ha! Nice try, this isn't a real photo, it's just a screenshot from Jenova Chen's _flOw._
Eggs are also delicious
Hmmm... Fascinating...
"keetoneedə", as chaeta is from greek; 'ch' from χ = "k"
Almost. While it may have come from Greek, it is in Latin (New Latin, to be precise). The correct pronunciation should be [kʰae̯'tonɪda], I think. That's pretty close to what you said, except for two of the vowels being different, namely that the first vowel should rhyme with "eye" and the third with "lid". The third vowel could also be pronounced [i], rhyming with "knee", which is what you said, depending on what time period's pronunciations we're going for, resulting in [kʰae̯'tonida]. If we were to go with a more Greek pronunciation, then the first vowel would still be "eye" and the third would definitely rhyme with "knee", but also the first consonant would probably be different. It still gets the k-sound [kʰ] if we go with Attic Greek, but later forms of Greek like Koine and Modern would have it be [x], the same sound that ends the word "loch" in Scottish accents or the first sound in "Chanuka" when pronounced with the throaty sound rather than a straight-up h-sound. This makes it [xae̯'tonida]. To get the pronunciation you suggest, ['kʰito'nida], we would need to resort to Ecclesiastical Latin pronunciation, but even then, I think it would end up being [kʰɛ'tonida], with the [ɛ] being the same sound as in "bet", which is still a bit different. I hear Hank saying [t͡ʃɛ'tɑnɪdə], which I agree is not right.
@@ChefSalad yeh, I'm no linguist, but my main point was that the initial consonantal sound is not "ch" as in chicken. I know that χ is like loch, but noone is going to say it like that; just "k" is fine.
Edit: the difference between uk and us english makes arguing over vowels kind of pointless. The consonants are where errors can be pointed to consistently.
@@TazPessle True enough. That and these languages are dead, so I suppose it doesn't really matter anyway. I just like being nitpicky sometimes. My vowel reference words were in General American English. As far as US vs UK, that only matters for examples. The IPA is always the same for the same sound.
@@ChefSalad yeh, IPA recommendations for uk pronunciations is always terrible; it's a vanishingly small amount of us that speaks anything close to RP. There is a youtube chanel that covers it, but don't ask me nowz I'm 8 beers down.
Interesting, how many people love to watch this videos while being stoned?
Not "evolution," but God made. God Breathed. Delicate details of His Beautiful Creation... like you
Nobody asked you about your religious convictions.
Is it evolution or adaptation? It’s still the same species right?
Switching from seawater to freshwater is not a trivial thing.
We talk about hundreds of species here :)
They are objectively not ❌ the same species though.
*****
Tik Tok's datacollection is absurd.... Why subject yourself to a clipboard reader and lead your viewers into such a company?
They need to be culled, not buffed.
I wish I didn't have to waste time with every video switching the audio back to English.
Ugh.. guys, love your channel, but I don't watch it consistently, I would appreciate the first video about gastrotrich
Please do not promote any use of the TikTok app. Cyber security experts say it's a huge data security risk for any device it is installed on.
Can we please put a language tag in the title.... (We're entirely separate Channel)
It's a waste of data for the general audience when it's not in their preferred language
A simple spa eng get exex
?
What?? Of course it's in English, the entire channel is?
I love this stuff but this guy's voice is a little too creepy for me and it doesn't help that the mic is so close to his mouth that I can hear all phlegm moving around.
I feel dumber just knowing this is on Tiktok.
I best most folks here on jan 23 2023 will never be on tic tok or they ware there years ago
Oh no, not more of this evolution silliness. How sad that JttM has bought into that lie.
I mean...we're allowed to believe what we choose, right?
We people working on zoology and gastrotrichs work under the theory of evolution which is the scientific consensus. If you disagree, you can start your own school of creationists gastrotrichologists :)
How the Hell 🔥🔥🔥 else are they supposed to *explain* why there are so many microorganisms with no utility to anything but their own survival ⚕?
WHY would you put this on TIC TOC????? I will have NOTHING TO DO WITH THAT CHINESE COMPANY!!!!!!!!!!!!!!
Bad idea people. Bad bad idea. And I'm sure they are PAYING you too. I say to everyone OH HELL NO!!!!!!!!!!!!!!!