Scytaliopsis djiboutiensis (Anthozoa) - Passive Filtration im Biotop (Freiwasseraufnahmen)

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Video in TIB AV-Portal: Scytaliopsis djiboutiensis (Anthozoa) - Passive Filtration im Biotop (Freiwasseraufnahmen)

Formal Metadata

Title
Scytaliopsis djiboutiensis (Anthozoa) - Passive Filtration im Biotop (Freiwasseraufnahmen)
Alternative Title
Scytaliopsis djiboutiensis (Anthozoa) - Acquisition of Food by Passive Filtration (Free Water Shots)
Author
License
CC Attribution - NonCommercial - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal and non-commercial purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
Identifiers
IWF Signature
E 2468
Publisher
Release Date
1980
Language
Silent film
Producer
Magnus, Dietrich B. E.
Production Year
1968

Technical Metadata

IWF Technical Data
Film, 16 mm, 30 m ; F, 3 min

Content Metadata

Subject Area
Abstract
Seefeder. Nächtlicher Nahrungserwerb durch Filtration im Flachwasser unterhalb der Spring-Niedrigwasser-Grenze. Die im Grobsediment stehenden Kolonien zeigen strömungsbedingtes Schwanken und tordieren um die Längsachse.
The film shows several stocks of the nightactive seafeather Scytaliapsis djiboutiensis in their natural habitat about 2 meters deep on sediment bottom in the shallow water of the Red Sea. The film was made using underwater light on several nights and during different current intensities. The seafeathers, which can be turned around on their flexible stems, adjust passively transverse to the direction of the current. They maintain this position even against the oscillation of the water caused by waves and bend backwards and forwards with the direction of the oscillating current. Circular currents cause torsions of the stocks.
Keywords Seefeder Scytaliopsis djiboutiensis Nahrungsfiltration Nahrungserwerb / Coelenterata acquisition of food / Coelenterata filtration of food food filtration Scytaliopsis djiboutiensis sea pen sea feather Encyclopaedia Cinematographica

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