A Sea Biscuit's Life
HTML-код
- Опубликовано: 22 авг 2024
- This video shows the life cycle of the sea biscuit Clypeaster subdepressus and is part of my master's thesis project at the Biosciences Institute of University of São Paulo.
We collected adults from sand beds of São Sebastião Channel (São Sebastião, SP, Brazil) and induced gamete release (eggs and sperm). We did the fertilization in vitro and followed the embryonic development in the laboratory, under light microscopy. Embryos become swimming larvae, approximately 0.2 mm wide, which we fed with microalgae until metamorphosis. A diminute sea biscuit grows inside the larva. When the minuscule podia and spines are formed the larva sinks and undergoes metamorphosis. The juvenile sea biscuit resorbs the larval tissue and begins to explore its new habitat, between sand grains.
The formal description was published in 2010:
www.plosone.org...
We did the footage in the Marine Biology Center of University of São Paulo (CEBIMar-USP), located in São Sebastião, SP, Brazil, northern shore of State of São Paulo.
www.usp.br/cbm
You can find more information about this project in the website.
mestrado.organe...
Download the soundtrack from the netlabel AEROTONE.
tinyurl.com/MyF...
This video is under a Creative Commons by-nc-sa license.
creativecommons...
the absolutely ephemeral soundtrack to this incredible video has made me feel a spectrum of human emotion that was previously thought unobtainable by modern scientists. This song haunts my waking thoughts and illuminates the mindscapes of my dreams. I think of nothing but this melody and it dances in my steps and fuels my very existence. Thank you, truly. My life will never be the same.
Same
To see the development of an echinoderm embryo is fascinating, and I love the music, too. It makes the video particularly engaging!
+omp199 Thanks!
This video is outstanding and I use it in my organismal biology class before they induce gamete release and observe syngamy in sea urchins in laboratory. Thanks for making this! I'm glad you have it here too; the one on vimeo seems to jump to the end and/or need more-recent browser updates to work. RUclips rocks! Bruno, YOU rock!
Dear Ross, thanks for using it in your classes, this is awesome! I have put a video with a few extra scenes here: figshare.com/articles/Sea_biscuit_life_cycle/763232 Can be useful if you want to show a specific process only or edit it into a new video. Cheers!
Ok but can you show the juvenile becoming an adult plz
I tried... but I couldn't get the right conditions and food to make them grow happy. Nobody really knows how long they could take to grow to their adult size (about 20-30cm wide). Possibly years!
I don't know what a sea bisquit is, but this is VERY cool ! An excellent way to spend 3min and 36seconds!
It’s so cool watching the cell division take place!
Yes, that's how I feel every time!
The music stirred an emotion inside me
To anyone wondering the song is Autonarkose by My First Trumpet
Thanks for that video
I aboslutely loved it! Thank you!
love the music, makes the video more fascinating:)!
0:22 I can't believe that's actually sperm
I know right
I think it is more like semen containing tiny sperm that the video shows later
Forbidden whipped cream?
Thanks! I used Dunaliella and took about 20 days until metamorphosis
Absolutely excellent.
Hei! During early gastrula stage the embryo has radial symmetry. The tube that grows during gastrulation goes straight until the top tip of the embryo (left side) and then bends to the ventral side. This is what you see at 1:28, a tube slightly out of focus in the background and its tip (focused) closer to the ventral epidermis. Think the issue is that these photos are oriented with the top of the embryo to the left... Take a look at the photos from the article (linked in the description)!
this video is truly fascinating. thank you so much for posting it :)
A Universidade de São Paulo é incrível
Very useful to study the early development of a Sea Urchin! Obrigado!
Glad you liked it! De nada :)
This tune is banging
Fifteen years since I made this and I still love the music.
ABSOLUTELY WONDERFUL BRUNO
THANKS!
Thanks!
Gracias !!
Wish I had a setup to film sandgrains like that!
@mansoor731 Thanks for passing by!
Really helpful for Embryology classes.
Glad to know! Thanks for watching!
This is gorgeous!!
Hi! I guess I cannot replace this version with a better resolution on yt, but I can send you the file :)
Bruno C. Vellutini cara, fantástico. Esse vídeo é simplesmente invrível parabéns
Cute
Agreed
MUSIC IS AMAZING
amazing. bizarrely beautiful
I felt the same.
@afy282 Do you mean the juvenile (at 3:00)? I was not able to follow the complete development until the adult form, but from this point on they basically grow and their skeleton gets thicker. In the video the juveniles are 0.5mm wide, but the adult of this species can reach up to 30cm! They might take decades to grow this big. Other species are smaller and have a shorter life cycle.
Thank you this is beautiful
Amazing video!
Thank you!
@EefkeVlinder thanks!
@IvanaSamJa Thanks for watching! :D
if you pause the vid at 1:28 the cell has radial symmetry.. yet the larva's mouth appears to be on the side.. so my main question is why the "tube" inside the embryo does not bend to the side? it seems like its going straight to the opposite side of the sphere around 1:28 min mark.
This is so beautifully made 😍
Thanks Danika!
@mizzmerissa83 Great :) did you try looking for "sand dollar"? You might find something (but also necklaces and other decoration artifacts made of their skeleton...).
@zoloog thanks!
superb video. thanks for publishing.
I love sand Dollars.
So do I!
It’s remind me shave-cream🌚
nice one bruno
@rhymepays I don't think this species is used commercially. Take a long time to grow and it is too bony to be eaten...
Its also called a sand dollar
That's correct! Although, we use sand dollars for species that are very flat (like a cracker). Sea biscuits are more chubby and have heavier bodies (like a cookie).
Awesome stuff.
Thanks!
Echinoderms are great!
Yeah!
That MUSIC though!
There’s a copyright of this
caralho, que lindo
Wow, that's a lot of eggs
It is! And that's only from one gonad - they have five.
thank you! great!!!
Hey, what is this a commercially important species?
Sensacional! Usei para a feira de ciências do meu filho :)
Que legal, Loraine!
Trabalho maravilhoso ❤
Obrigado Natália!
@makeupobsessed14 thanks!
Wow that's a weird looking horse.
That ain't no horse, Mr Pineapple!
@kantana1022 bizarrely beautiful is a perfect description :)
really bizzare!!!
I just came here to see what a sea biscuit is.
Now you know how their babies look like as well :)
Nous somme en S.V.T :D j adore les sciences
0:23
That's alot of shaving cream, And I hope that doesn't come from shaving cream.
There is enough cream to shave a moustache
LIFE IS FUCKEN STRANGE
TOTALLY
can any one tell me if the animal in this clip is under porifera, or under cnidaria. need to know for a report thank you XD
thank you for this video i ve enjoyed it a lot bye bye xoxo
Thanks for watching!
This doesn't look like the horse I remember.
You are getting good in taxonomy! Congrats ;-)
0:22 that's what she said
wow its great man
@julie20039 I love the music too ;)
Sand dollar alien confirmed
Much cooler than flying space discs
How can I get this song?
soundcloud.com/my-first-trumpet/autonarkose
UBC BIOL 205! :)
sea biscuit 😂
@smallmak5 Echinodermata
Sand dollars start as sand pennies.
Haha, that's true. If I'm not mistaken, there is a sand dollar species commonly known as sea penny.
*does a sea mario exist?*
*Yes*
help me understand
boy i thought the audio was fucked at the beginning
It sets up the dramatic entry of the chords on 0:08 :-D -- Glad you kept watching ;-)
#seabiscutsforlife
@xxxDarkcloud0xxx It moves like spider-man!
0:26 looks like soap lol
Liquid soap you mean ;)
That's a sand dollar
Correct!
D O P E
1:41 it look like gummy fox
Aka a sans dollar
serif or mono?
hot
oh 1:29 explained it.. don't know how i missed it the first time. thanks
0:22 every yaoi ever
I wonder why people comment much more about the sperm than about the eggs spawning at 0:11
What the FUCK is a sea biscuit!!
A sea biscuit is an animal. Sea urchins are its brothers, starfish its cousins. We humans (if that's the case) belong to the same evolutionary lineage, even though they have much better feet coordination than we will ever have.
Thanks!