Echinoderm development

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Echinoderm development
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Summary

Description This video shows the life cycle of an irregular echinoderm, the sea biscuit Clypeaster subdepressus, depicting all developmental stages. Footage consist of: adults releasing gametes (eggs and sperm), fertilization of the egg, first embryonic cell divisions, gastrulation sequence, swimming blastulae and gastrulae, swimming pluteus larvae with 2/4/6/8 arms, developing juvenile rudiment inside larvae, settlement behavior of competent plutei, and complete metamorphosis into a juvenile.
Date 2008-11-05
Source commons.wikimedia.org
Author Bruno C. Vellutini

Licensing

Creative Commons Share Alike

CC BY-SA

Attribution: Bruno C. Vellutini, 2008-11-05

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