Why River Otters Have Bones… In Their Hearts
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- Опубликовано: 30 июл 2024
- Most mammals can develop bones in their hearts. For humans, it's usually a bad thing, but for river otters, it could be a useful adaptation.
Hosted by: Stefan Chin
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Sources:
Cardiac skeleton overview
pubs.rsna.org/doi/full/10.114...
Bones in the heart skeleton of the otter (2000)
www.ncbi.nlm.nih.gov/pmc/arti...
(2001)
www.researchgate.net/profile/...
Healthy heart: lessons from nature’s elite athletes
journals.physiology.org/doi/p...
AHOOO Structures
onlinelibrary.wiley.com/doi/f...
Osteogenesis and endochondral ossification
www.ncbi.nlm.nih.gov/books/NB...
Chimps develop os cordis
www.nature.com/articles/s4159...
Images:
en.wikipedia.org/wiki/File:Gr...
awww, otters not only have a big heart, but their heart can literally break.
Mortal Kombat has taught me that all hearts can break
McDonald’s taught me that
Crunch.
So can humans. There are tendons inside the heart called heart strings. They can break down as a result of stress, due to stress hormones causing them to weaken.
We can too. Called broken heart syndrome
So, in some cases, bone is scar tissue to cartilage. Interesting.
Yeah, so fascinating! I'd never expected such a thing. Nature is simultaneously brilliant and terrifying.
not exactly… but yes
Yes, it happens in the latter part of you healing from a broken bone. Say if you break your arm, your body makes a soft callus out of cartilage to stick the bone ends together, and then uses it as a framework for new bone.
STRONGER LOVE!
LOL
Bruh hoi
@muscle hank I'd love you so hard
Muscle Hank! I missed you!
MUSCLE TOF MUSCLE HANK!
Least weasels have one of the hardest bites in relation to size. Otters have a large heart for aquatic mammals. Wolverines have the ability to cross treacherous terrain at a quick pace. Weasels are pretty awesome.
fwoo
Unless you're married to one.
Goats can climb walls that are 90° from the floor, many animals have superpowers
For a video about otters, this video is sorely lacking on video of cute otters at play!
*Science:* Otters have massive hearts.
*Me, seeing otters holding hands while they sleep:* "😭😭😭 IT'S TRUE!!!"
Oh I love seeing that, 🥰
That is cute, but for the record, those are sea otters in those pictures. This vid's about river otters.
Those are sea otters not river otters, and FYI they don’t hold hands because they love each other. They do it because the don’t wan to drift away from their raft (sea otter group)
Sorry, no one said massive hearts. Their hearts are very small. Your joke is broken.
I looked it up; it seems they don’t know whether river otters hold hands while sleeping because they are so difficult to observe in dens. It’s possible that they do.
River otters like to use rocks as tools. They find flat rocks that they love and always carry, and they lay on their back with the rock on their chest and smash shellfish. They probably have handedness as well, so that may answer the question of the seemingly random placement of the ossified tissue. It'd build up over time as they smashed shellfish to bits. Just postulating tho
I thought it was sea otters that carried and used their favorite rock as a tool. I did a little looking up on it and couldn't find anything saying river otters do this. But that would be a really interesting and logical conclusion.
If you want your heart to be sploded, go meet Joey the SUPER fluffy baby otter at Vancouver Marine Mammal Rescue on their RUclips livestream. Will soothe even the most stressed 💓
@@aa-oy9il Oh yeah you reminded me I gotta share "wiggle wiggle jump" with everyone :) ruclips.net/video/_4kW5Sxnmlc/видео.html
And the "Cutest Thumbnail of 2020" award goes to...
At least my vote's for this one
1:21 Biologist: "Is it a bug or a feature?"
God: "Yes. It varies by application. And it's Not a bug, it's hardware degradation. When did you last do system maintenance?"
2:00
Are you saying if I pull and wiggle my ears enough they will turn bony?
cauliflower eats
Cauliflower ear is caused by blunt trauma stopping blood flow. I think you'd need to do something else to get your ears to turn to bone. I also have a feeling you'd need to induce stress without bending them a lot.
“Cartilage is a pretty tough material”
*cries in Ehlers Danlos Syndrome*
Yay 💩 collagen?
I also have EDS.
When one river otter is being inappropriate to another river otter: I've got a heart-on for you.
"Owner of a boney heart🎶" - Yes
That'll be a blues song before you know it
@@meetaverma8372
Prog Rock in the style of Yes.
Edit: Missed that they actually attribute it. 😅
why do you have a sea otter on the thumbnail if its about river otters
It's a cartoon. At least, it is now; I don't know if they changed the thumbnail.
That's not a sea otter, that's an Oshawott.
@@suicune690 Can confirm
It happens cause the otter has had its heart broken too many times. : (
poor otters :( 🥺🥺
F.
mood
Other otters have shown nothing but _otter_ content towards the otter.
@@hectorandem2944 ?
F
F what?
I don't get
Why people just put one random letter🤔
Am i being really dumb ?
Otters got that love bone.
Its useful for when they are traveling in their home of Otter-Space.
Ugh! But cute nonetheless. 👍🏼
Fiiiiiiiiiiiine take my fukin upvote
And the otter-fall....
Normal people : 0.6%
Intellectuals : six tenths of a percent.
Three fifths of a percent actually.
Six tenths*
You clearly have a low IQ. People with high IQ do not call themselves "intellectuals".
@@solchapeau6343 You clearly have a low IQ since you didn’t recognise the fact that this is a meme format 😚 also people that toss the term IQ around as though it holds substantial meaning need better personalities.
Very cool video Stefan! Otters are just too adorable and learning something new about the little guys is fascinating! How weird? Bone in their big hearts!! Very interesting to know as well as learning that other animals have a similar trait. 😊💕
River otters are amazing creatures on so many levels.
Dam, imagine their heart breaks 😔
Is this something that's only found in mammals, or do birds develop this too?
I couldn't find a direct answer to this on short notice, but birds with cardiovascular disease can suffer calcification of the blood vessels in a very similar way so I would assume their hearts can calcify too.
According to the National Library of Medicine; both birds and mammals have cartilage in their hearts, that makes sense since their hearts need strong connective tissue to hold the chambers together, especially since up in the air they’ll need that support. According to a website by the name of www.sora.unm.edu some birds have a heart the weighs 0.78 percent or 0.85 percent of their body weight. So their hearts are pretty big relative to their size, they’ll need it since they have no support in air like fresh water or even saltwater, more energy will be expended and therefore it’s theoretically possible for their cartilage to calcify into bone. I didn’t find anything of whether it actually happened though.
@@whifflingtit9240 Thanks!
@@adnanmicahchips2842 Thanks!
Rachel Webber You’re welcome.
Wondering if this is true for new world otters such as Lontra canadensis. Lutra lutra is the Eurasian river otter, but it would be interesting to know if this is an adaptation shared by all River otters or just the Old world species. Very cool either way.
Considering how ubiquitous heart calcification is? It's probably found in other species as well.
*This is otterly adorable 😍*
Thank you to the presenters for their presentation.
They give a new meaning to having a broken heart lol
I work at a zoo, and we have two river otters. They love to chase my bike.
I clicked on the video because I wanted to learn more about hearts, but boy was I amazed when I found out that there are saltwater otters.
"Cartilage is a pretty tough material"
Not when you have Ehlers-Danlos it's not xD
I clicked because the thumbnail was just so adorable. I am glad I did. this was pretty cool
there should be more pictures in these videos because pictures of otters lead to happiness
So It means that it's possible that we eventually find these cardiac bone in some fossilized dinasour heart?
Technically possible but VERY unlikely considering small bones don't fossilize well, and we almost NEVER recover even the hyoid bones of the dinosaurs we find.
Now I'm curious about the giant otter, which can grow to 6' long. They live in the Amazon River region.
Titanium hearts.
"Otters have huge hearts" .... My heart
You could say the River Otter is a...
♪ _Owner of a bony heart_ ♫
Cool. I saw a wild river otter in the boundary waters area a few weeks ago.
You are wrong about them being active at zoos. I have been to the LA zoo hundreds of times, and saw a single otter move just to scratch itself in it's sleep. They are extremely inactive in captivity.
Awwwww lil otters, my favorite
Bones really fascinating!🦴🍗😜
Those boys have strong hearts.
Hearts and Bones is the sixth solo studio album by Paul Simon. It was released in 1983. The album was originally intended to be called Think Too Much, but Mo Ostin, president of Warner Bros. Records at the time, persuaded Simon to change it.
Stefan: It's a healthy response to stress
Me: I got a lot of bones in my heart then
Ye? You had a stressful life?
He literally says straight after that in humans it's not a good thing as it's a sign of heart disease. Nothing to brag about
Going for that Delirium run I guess
Interesting!
valentine card idea: I Want To Bone Your Heart Like A River Otter, Valentine
Neat. One of those things you can point to when a creationist tells you there is no intermediate anything. River otters are randomly generating heart bones. Eventually, the best kind will happen, and those will be better-suited otters. Eventually, there WILL be a bone you can recognize as the river-otter heart-bone.
I just love otters.
For a mammal, swimming that fast in cold water burns a lot of energy and a big heart makes total sense. Will it look like the heart of a sea lion?
That Gawddamn shirt! It`s sooo sparkly! ... must ... have... it! :D
finding boney bits on old cow's hearts is not uncommon aswell!
I like when Stefan wears t-shirts
"Endochondral Ossification" Yep, that's a term I plan on using on my next date.
"don't leave I have endochondral ossification and my heart will literally break"
thx
1:59 just so I'm understanding this properly, is it only connective tissue that can get reinforced like that or any tissue? Is it only areas with or near cartilage? Or could I theoretically develop cartilage then bone on my wrist from wearing an I'll fitting, heavy watch for a long time?
Just seen one while fishing today.
What I'm conclusing from this is that River Otters are evolving, since I assume that different configurations of reinforcement would provide different degrees of benifit and fitness as a organism, some extended Healthspan and Old Prime shenanigans via some semi-random heart reinforcement. I imagine that as time goes by there's going to be less randomness in where and how the heart gets reinforced with bone as more efficient traits displace less efficient ones out of the limited population niches.
The process of catilege reinforcing itself. Can it also happen in the joints like knees in humans. I done karate from 8 to 16 and would normally over exert myself to the point that my knees and big toes would click easily, but still quite fast. This started happening At the age of 13.
Otters to humans: Y'all are BONED.
the thumbnail has a drawing of a sea otter?
so many weird ass bots in the comments, except for muscle hank, muscle hank is love
Ikr
Yeah lol
Hell yeah brother.
*with a bone
No bots tho
lemme get that heart BONELESS
Wow, ok hearts have real electrical systems and electrical signals, that's awesome.
The River Otter's scientific name sounds like an ancient Roman battle cry. Lutra! Lutra!
So this is the beginning of "broken heart"
Perhaps it has to do with stabilizing blood calcium levels and differing dietary calcium levels between the two species.
I'd be interested to know if other marine mammals have this condition, too. Cetaceans, manatees, dugongs, pinepeds, and polar bears.
River otters swim on their bellies. Sea otters swim on their backs.
WoW
Completely random fact:
Since the moment Pluto was discovered and until the moment when it lost its status of a planet, this celestial body has not completed a single full revolution around the Sun.
-SciFacts
That's so sad. 🌃
It takes 248 Earth years to make a full revolution around the Sun...
Damn.
personally i find Pluto's tale quite ironic - considering the namesake god was the only Olympian who didn't actually reside on Olympus and was more like a footnote most of the time.
Are you telling me otters can get literal broken hearts? cool.
Another miracle of unintelligent design
People are like awww they have big hearts aaaaaaawwwww but someone had to rip there hearts out of their body to find this out ....
how did we find out about this? were the otters disected? or x-rayed or something for some reason? just curious
Nsp slowly plays in the background
The dude presenting was chosen for his incisors.
You know otters aren't rodents, right?
#Istandwithsophie
I know this isn't related to this video but just thought I'd spread awareness since RUclips is age restricting all videos related to it
Wow
Life is a collection of mistakes, you will never learn if you don’t make them.
-The Shades
My heart must be full of bone, because it's always broken........
The knee bone's connected to the 'Heart bone'.
Do they only find these bones in older otters, or is it that most otters will grow these bones as they get older?
I broke my leg last year 😅
Hmm interesting, that's why the older otter hearts make better smoked tacos. I never knew there was bone tissue, but since they get smoked low and slow it softens them up, and it just melts.
Yes: Otter With A Bony Heart
Buen video solo quisiera hacer una observación, la gravedad en otro planeta como 0.5g causaría tipos de corazón extraños y más variados al menos en un momento de la vida y su evolución que como su cambrico sería múltiples variables de un diseño de anatomía biológica.
It’s so they can be squeezed without dying
river otters have bones and other jokes you can tell your cat
The knee bone is connected to the leg bone.
The elbow is connected to the arm bone.
The heart bone is connected to my wristwatch... Uh oh
why does the thumbnail show a sea otter when this video is about river otters specifically?
Neato
Things i didn't ask.... but i enjoyed learning.
Or maybe cause they keep banging shells on their chest????? I mean that has got to trigger some bone gain 'somewhere'.
Didn't see the "in there hearts" part of the title lmao. I was like uhh so they can move.
That's better than how I read it. I read it as 'why don't otters have bones' and was confused.
**Holt voice** BONE!?
So, the answer boils down to we don't know.
So this is what it means to break a heart
Otters can actually brake their hearts.
3:26 ohh so im an otter now..wtf..when did i turn into an otter?!?!
So how do we actually know that the bone is beneficial to the otters. If they’re found to occur similarly to other mammals, why are they different?