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Cassiopeia xamachana (Rhizostomae) - Schwimmen und Planktonfang

Video in TIB AV-Portal: Cassiopeia xamachana (Rhizostomae) - Schwimmen und Planktonfang

Formal Metadata

Cassiopeia xamachana (Rhizostomae) - Schwimmen und Planktonfang
Alternative Title
Cassiopeia xamachana (Rhizostomae) - Swimming and Capture of Plankton
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IWF Signature
E 1465
Release Date
Silent film
Max-Planck-Institut für Verhaltensphysiologie (Seewiesen)
Production Year

Technical Metadata

IWF Technical Data
Film, 16 mm, 26 m ; SW, 2 1/2 min

Content Metadata

Subject Area
Wurzelmundqualle. Beispiel ökologischer Anpassung durch Umfunktionieren einer ursprünglichen Bewegungsweise: Die durch Glockenkontraktion frei schwimmende Meduse setzt sich mit der Schirmoberseite fest; Glockenkontraktionen strudeln Nahrungspartikel in die lappenförmigen Mundarme.
Cassiopeia xamachana, a scyphozoa, belongs to the family of rhizostomae. This medusa lives in still lagoon waters of tropical coasts. Whereas other species of rhizostomae spend their lives swimming free, Cassiopeia changes over to a stationary mode of life. It swims, like all medusae, by means of rhythmic contractions of its umbrella. It can, however, also fasten itself to a substrate, whereby the upper surface of the umbrella serves as suction pad. The contractions then continue at a slower pace, creating a water current which is filtered for food particles. The film shows aquarium shots of Cassiopeia xamachana swimming free and attached to a surface.
Keywords Wurzelmundqualle Cassiopeia xamachana Planktonfang Schwimmen / Coelenterata Nahrungsaufnahme / Coelenterata ingestion / Coelenterata swimming / Coelenterata capture of plankton Cassiopeia xamachana root-mouth jellyfish jellyfish Encyclopaedia Cinematographica
IWF Classification Biologie Cnidaria - Nesseltiere Coelenterata - Hohltiere Ethologie, Morphologie Zoologie zoology ethology, morphology coelenterata - coelenterates cnidaria - cnidarians (jellyfish, polyps) biology

Related Material

The following resource is accompanying material for the video