Echinoderm development
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Source: commons.wikimedia.org
Video source record: https://commons.wikimedia.org/wiki/File:Echinoderm%20development.webm
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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. |
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| Date | 2008-11-05 |
| Source | commons.wikimedia.org |
| Author | Bruno C. Vellutini |
File usage
- Equinoderms ca.wikipedia.org
- Stachelhäuter de.wikipedia.org