Water Fleas: Look Weird, Adapt Weirder
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- Опубліковано 2 лип 2024
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www.nature.com/articles/414899a - Наука та технологія
When I was about 15, I was on a biology field trip. Someone stumbled across a small pond that was packed with daphnia. None of the others knew what they were, but I confidently identified them as daphnia. When the teacher’s text confirmed my hypothesis, it did nothing for my social standing, at all. Knowledge is dangerous
Ignorance is bliss
HAHHAHAAHHAHA!!!!!
Knowing things in school makes you a nerd.
[inhales]
NNNNNNNNNNNNEEEEEEEEEEEEEEERRRRRRRRRRRRRRRRRRRRRRRDDDDDDDDDDDDDDDDDDDDD!
@@evilsharkey8954 Knowing things in society makes you dangerous
*Water bears are not bears,*
*Water fleas are not fleas,*
*But if you hook up with this Rotifer,*
*What you get is what you see.*
Rotifer, isn’t that one of your kin at 10:04, under the cladoceran’s butt?
@@evilsharkey8954 OOO EXPOSED
This is why we’re not friends Rotifer!
Please tell us, have you been through a daphnea's digestive tract? What is it like? Do you turn this into one of your crazy challenges with your friends?
@@evilsharkey8954 *That... Was me. You're probably wondering how I ended up in that situation.*
"I wouldn't lie to you. That's not the type of show this is."
(Daphnia takes a dump on screen.)
(Pause for effect.)
My friend was like "It pooped!" and pumped his hands in the air. It doesn't take much to excite us anymore.
Thank the Gods, we are not alone in our poopsight
This guy with the straight face will tell you that all this advanced bio machinery created by chance and Mr. Evolution.
The type of show this is; tiny animals pooping type show
Literally thought the same thing lmao
I’m in the middle of finals for this strangest semester of college, and this is exactly the break from stress I need right now
Good luck on the exams. 🙃☮️
Same here, hard to study for history when you are living through it. Good luck with everything
A. Bookmonkey me too. Strange finals indeed.
Best wishes to you!
Same, good luck !
i'm waiting for rotifer to comment about that rotifer that was filtered through the water flea.
lmao me too
"imagine using your feet to filter food and your ears to swim, *that* is how the water flea *do* "
Put me in the team, Zefrank. I'm ready!
Yaa
Perfect imitation of Zefrank!
One of my first, most memorable moments as a biology student was the day I managed to catch one of these in a single drop of water under a compound microscope. They are so beautiful and fascinating, they seem too complex to exist on such a small scale.
Oh yay you finally made a video about my favourite aliens on earth.
I had my labwork training at a waterecology lab. One of the things i did there was take care of the daphnia they had. On the first weeks i was there, the prof gave me a small bottle with the daphnia we were microscoping to get familiar with the things. To keep in a bottle and see how long it's going to live. With them it may be days, it may be months. Well it kinda got kids a few days after, and it's offspring live in my aquarium still to this day, 3 years later. I do want a more social pet someday. But watching them is nice to do in the mornings.
Risto Pöhö this warmed my heart
It is fun having the tiny little animals around, isn't it? It's sort of meditative, when you sit down and watch them doing their thing; in my "Odd Pond" aquarium, I've just put the critters that I found living on or in the trash I cleaned out of our nearby lagoon. It's a really fascinating bunch. The big guys are dragonfly larvae, water beetles, and leeches. Then there are snails, little guys of two species; which I've seen the leeches attack and eat! Then it gets down to the easily-seen but tiny, copopods and freshwater shrimp, darting around quickly whenever I turn on a light, then hiding in either the duckweed at the top or down in the substrate. And then there's the super-tiny fellows living down in the substrate; I'll take a 10X lens and a flashlight and look at them once in a while, little green beetles so small that even my very good vision can't quite focus on them without magnification, living down between the bits of gravel. And then there are all the little worms in the mud beneath the gravel--which I think make up the majority of the leeches' diet, since I don't feed them anything.
When I clean Odd Pond, I always let the water settle before I discard it. I don't want to miss any of the little creatures, even if they're nameless and ephemeral. They're just too interesting to let them go down the drain.
@@paintedwings74 What a nice comment, that made me smile
Speaking of their reproduction cycles, I worked in my college's environmental toxicology lab, which frequently used water fleas for toxicity tests, and we noticed that this shift from asexual to sexual reproduction happened for our fleas even with very little change in external stimuli! Every single day of the year, our reserves of these little ladies were kept in the same windowless lighted incubator at the same temp in a room with no windows and the exact same feeding schedule. Yet, every year in the Fall, they would undergo sexual reproduction as if they knew the seasons were changing! They were taken out for a maximum of 20 minutes a day for feedings, during which maybe they sensed the building's A/C changes throughout the year, but that's still so minor! It was crazy!
They have a biological clock that's accurate to about 2 weeks a year. They'll actually do it inside a sensory deprivation chamber as well.
In my bio lab we did the whole alcohol/heart beat experiment. I can confirm that they act silly and drunk afterwards. (don't worry they were ok, we had a "rehab" tank for them to recover in)
Rotifer got yeeted. Expect him to complain in comments.
Give him a little time. He's probably recovering from the trauma.
It all makes sense now: Two eyes merged into one.. Filter feeding.. Teeth out of the neck.. Sonic is a Daphnia!
Thank you to anyone and everyone who has ever donated to this show.
4:52 - *How DISRESPECTFUL!*
(Sorry for the delayed third response. I was recollecting my composure after such an escapade)
You weren't even good enough to be eaten
0:00 *Hank:* "Water Fleas are not fleas."
10:00 *Me:* "Duh. Look at those Water Penguins."
Dave Toms same
I was thinking Water Plague Doctors
I would love to see someone create a 3d model of what these things would look like without the microscope.
Honestly? They just look like little, twitching dots.
*Neck teeth*
I didn't expect to hear that today, especially about daphnia.
4:55 - Didn't even take the poor Rotifer out to dinner first. Just used and dropped off.
Imagine being in the position of that rotifer at 5:00 - minding your own business, ambling along, when suddenly something sucks you up and swallows you whole, and a few seconds later shits you out the other end alive and completely intact.
These guys are genius. They chose a subject that will probably never run out of good content.
10:20
This is an awesome desktop background. It looks like the microcosmic equivalent to "All animals are equal, but some animals are more equal than others."
4 dudes just hanging out, standing/laying around. The little guy? 'Pay no attention to the little guy. What little guy. I don't see no little guy.'
01:15 its THAT kind of show though LOL!
Whoa, it's so trippy/cool to see all the movement inside their bodies. Also to learn more about them - Neat!
I had Daphnia appear in my fish tank unintentionally. The majority of them settled on a log exposed just above the waters surface. They were fascinating to watch them bounce around of the waters surface.
Unfortunately the aquarium’s seem broke and emptied out of over my floor. I lost most of my fish and as far as I know all of my “water flea” friends :(
However, thank you for this very informative video! I am fascinated by your content and I feel inspired to buy a microscope for myself now
Oh god, this gave me flashbacks of when I had my final on arthropods (actually the last final I had before quarantine). I remember the Cladoceran life cycle was a nightmare to remember. You guys explained it much more easily and clearly than my class diagrams.
Yes! A video about cladoceras. Sorry, at 1:30 that's not a Bosmina, it is a Chydorus (or some other member of Chydoridae) and at 10:02 it is a Bosmina. Also most of the footage of Daphnia, is of Simocephalus...
4:04, we are forever thankful 💙
I have been obsessed with Daphnia since I was in fourth grade, and now I have a colony of Daphnia magna in a fishbowl!
It's kinda crazy how adaptable these things are. Reproducing super fast, changing body parts and plans in response to predators in one generation that only takes 3-ish days to produce, antennae for legs and legs for teeth (and teeth on their neck)...
I remember as a kid using a torch to make them swarm in a farm dam, and how they would grow horns during their mating season.
Fun fact 1: you can order daphnia eggs on ebay (I already got a few shipments, they hatch!)
Fun fact 2: once I got a few zebras (danio) hatch so I needed a new aquarium for them ASAP, I asked the girl next door for one. She gave me a small aquarium she didn't use for years. I cleared it, boiled the substrate 2 times, and a few weeks later after years of dryness and 2 boils, small crustaceans (similar but different species to daphnia) hatched among the zebras. Those eggs can really survive!
8:14 "Times are tough... time to relax with some vitamin D"
I’m not like other girls, I’m a water flea
Hot.
Takanashi Souta would like to know your location
I'm a water flea, I'm like most other girls and guys genetically, but it's what's outside that matters
I have snake arms
I want to see your neck teeth
Love all your posts..you are a breath of fresh air. Thank YOU.
Daphnia, I used to culture these creatures for my fish colonies, fishes love them alot!
My first introduction to water fleas was the March 23, 1986 episode of Nature, titled _Death Trap,_ narrated by George Page and set to some (at times) fantastical music. It's possible to find it here on UA-cam. This video makes a nice addition.
I love all these videos... thanks so much for making these fun, artful, and educational videos!
I agree with you. Two of my grandchildren love so much (and learn english, a bit)
1:15 it did a lil poopoo lmao
Poetry in the microcosmos...💞
Interesting to see the shell of the Daphnia is made up of hexagonal shapes. Strong structural integrity!
hexagons are the bestagons
@@bread5795 compound eyes scare me
Each one of those hexagons is a single large molecule, a large protein, and they click together with electrostatic forces to form the shell. Biology is amazing.
The weird thing about water fleas is this little buddies can develop their shells according to their predators.
1:17 **proceeds to poop**
The timestamp we needed!
So they eat with their feet, fight with their filter, and swim with their sensory organs?
And have "teeth" on their neck
The unidentified cladocerans near the end look like they've got little plague doctor masks
I love the way they're just chilling there like they're floating in space or something, and then the one is facing a different direction like the kerbals on the title screen of KSP lol
Love, love, absolutely love hanks voice.
Daphnia are the only thing I've ever been like, oh I know 100% what that is. I feed them in my aquariums some times.
Gravewax haha same. My friend sent me this video and I was like oh cute, fish food. Then the video had to go and drop that guilt bomb about how they save daphnia from the fish store 😂
I worked in a lab that handled a lot of wastewater effluent; I saw red daphnia in my samples almost every day. The way they moved while I suctioned water out of my TSS samples always unsettled me (along with the stink, of course).
This channel is so great and I love it so much. Thank you for the calm, even delivery without sacrificing humor, it's so nice.
just woke up. New microcosmos video? I think i will.
This is by far the best channel in youtube, thanks!! and keep up the great work!
Baha that poor rotifer got a full tour of the daphnias digestive system.
I love rotifers, the hapless denizens of the microcosmos
Thank you, patrons and Microcosmos staff!
Love your voice. If you ever get bored, become a hypnotist. Just relax your mind and be one with the microcosmos of the universe.
Absolutely brilliant per usual!
When you’re just chilling and somebody just rolls up and eats you.
Love the soft voice!
My jaw dropped when I saw those vorticella on that water flea - what a cool shot.
Great video and audio.
8:42 am i the only one that thinks the bubble in this part resembles some of this realistic interpretations of black holes?
I work with these guys almost everyday and there's still a ton I learned from this video. Thanks!
Fascinating!
Great video, would love to see more videos about aquarium micro-fauna it's fascinating.
It really is
yay!!! finally a show to watch when i wake up at the middle of the night during the school year :) i’ve also been cultivating a jar full of water and dirt and i see some water fleas sometimes!!
Great footage! Thank you for sharing🔬
Thanks for the vid!
Muc love brother. Thanks for the new vid.
Thank you for this video and all the other ones you’ve made *recently*. I crave normal and knowledge. The life forms you highlight are a reminder of the tenacity of life. I love exploring “the unseen world” with you guys... especially right now.
This is so fascinating and the narrator has a wonderful voice!
WONDERFUL NATURE...And I like explanations. Thanks for subtitles, too.
AMAZING... very informative and suberbly presented.
Thank you for all those videos! Exceptional quality and knowledge! Keep it up! ❤️
Really learned a lot about a creature I thought I knew a lot about, having cultured them for several years now to feed my more picky eating fish I really never gave them the time of day to really look into them...it's why I love this channel, almost all of it is entirely new and interesting to me, but even with stuff I was fairly well versed on beforehand, you don't fail to teach me more!
Good show. Well information.
This series has SUCH a good soundtrack!
Thank you.
Now, I want to know more about an ostracod in my fish tank.
Great stuff :) keep up the good work!
Another mind blowing episode of bringing life into focus through the micro- thanks!
I love your show.
I'm curious: can anyone tell me how many cells a Daphnia has? (or at least: what order of magnitude)
This episode very helping me as daphnia breeder. There a lot important information. Thanks a alot ^^
Your videos are so entertaining and educational, dont ever stop
Interesting, thank you so much for this beautiful video.
I just found this channel and I have a degree in aquatic ecosystems. This video is amazingly informative and calming
what a great educational video, especially during these crazy lockdown times. thank you
Glad I'm not alone in mediating caffeine for critters! I have a worm farm that I am a little cautious of over feeding coffee grinds to 🙂
Good information.. Well show.
So enjoyable
"You know... all the usual protective measures... growing extra large and having teeth on your neck"
*Instant subscribe*
I love this format. It's a lot more low-key, and has a nice intimacy that is a welcome contrast to bombastic, artificially energetic YT norm.
Creo que canal debe estar entre los mejores de youtube. ¡Excelente trabajo y producción! Gracias por compartir estos videos tan increíbles y hacer accesible la observación del microcosmos
I had a microscope when I was a kid in the 1950's.watching these videos makes me want one again.
Ooo they really vibin' to that opening track.
Freaking cool! I love this channel.
Thank you
Amazing vid, hope to see video about its parasites and gut microbiota
I like the way they handle reproduction. Parthenogenesis seems like a great tool to fill up an environment quickly, whereas sexual reproduction manages to give them critical genetic reshuffling. Being able to do both seems like an important ability considering their status.
My husband accidentally woke me up at 2 am and it’s almost two hours later. Listening to hank to fall asleep 🥴🥱
Ive just started a daphnia culture in a big jar jar on my windowsill. Im mesmerised by them. these images are amazing thank you chaps. any tips gratefully received James. or carry on regardless fine sir!
Great video :D I never heard of water fleas before so this was all new info to me!