A Sea Biscuit's Life
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Uploaded by brunovellutini on Nov 5, 2008
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:
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0009654
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.
http://www.usp.br/cbm
You can find more information about this project in the website.
http://mestrado.organelas.com
Download the soundtrack from the netlabel AEROTONE.
http://tinyurl.com/MyFirstTrumpet-Frerk
This video is under a Creative Commons by-nc-sa license.
http://creativecommons.org/licenses/by-nc-sa/2.5/br/
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Uploader Comments (brunovellutini)
Top Comments
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Thank you for having about the only thing on the internet about actual Sea Biscuits, and not the stupid horse in the movie. I finally have something to work with for my Zoology lab on Echinodermata.
2 years ago 3
All Comments (26)
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@EefkeVlinder thanks!
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@kantana1022 bizarrely beautiful is a perfect description :)
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@makeupobsessed14 thanks!
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@mansoor731 Thanks for passing by!
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@julie20039 I love the music too ;)
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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
smallmak5 5 months ago
@smallmak5 Echinodermata
brunovellutini 4 months ago
Shit u see that sucker moving those rocks at the end? That mofo is a heavyweight!
xxxDarkcloud0xxx 6 months ago
@xxxDarkcloud0xxx It moves like spider-man!
brunovellutini 4 months ago
very very cool
:-)
zoloog 3 years ago 3
@zoloog thanks!
brunovellutini 7 months ago