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Tuesday, February 12, 2013

Sea Urchins--How Does An Animal Without Eyes See the Light, by CIEE

The CIEE Research Station Bonaire will hold its next public presentation on Wednesday, February 20th, 2013 to explain this perplexing riddle:  How can an animal without eyes see the light?

This presentation will be given by Dr. E. Arboleda.  Sea urchins belong to an ancient lineage of animals that have been widely studied over the history of marine science. It has been known since the times of Aristotle how they respond to moonlight to synchronize their reproductive seasons. It has been also known that sea urchins have an active response to light (either avoiding it or going toward it ,depending on the species), but it has always been a matter of debate how can these animals sense the light surrounding them.  Thanks to modern science and the use of genetic and molecular biology tools, we have been able to decipher this long standing question. During Dr. Arboleda’s presentation, it will become clear about the methods used to study light sensation (known as photoreception) in sea urchins, and why these sea urchins are now considered “walking eyes,” able to sense light from any direction even during their juvenile forms.

The presentation will be begin promptly at 7:00 PM, and entry is free and all are welcome.  It’s recommended to arrive a bit early, as recent presentations have been full.  The presentation will be held at the CIEE headquarters at Kaya Gobernador N. Debrot 26 in Kralendijk.  (Source:  CIEE)

Posted by Susan Davis on February 12, 2013 at 4:04pm AST
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