Thursday, November 20, 2008

Clypeaster subdepressus Video Friday!

For your Friday viewing pleasure: A neato video from a Masters student at the Biosciences Institute at the University of Sao Paulo in Brazil

A Sea Biscuit's Life from Bruno Vellutini on Vimeo.

He adds the following details from his website:

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.
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.

You can find more information about this project in the website.

and here in English..

Happy Weekend to Everyone!


Jim Lemire said...

love the soundtrack too

Anonymous said...

So beautiful! My students will love this - thanks Chris!!!

Peter Etnoyer said...

I agree, it's a great teaching tool. So nice to see pluteus larvae swimming. Thanks, Chris!