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Arcella dentata (Testacea) - Bewegung und Fortpflanzung


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Formal Metadata

Title Arcella dentata (Testacea) - Bewegung und Fortpflanzung
Alternative Title Arcella dentata (Testacea) - Movement and Reproduction
Author Netzel, Harald
License No Open Access License:
German copyright law applies. This film may be used for your own use but it may not be distributed via the internet or passed on to external parties.
DOI 10.3203/IWF/E-1644
IWF Signature E 1644
Publisher IWF (Göttingen)
Release Date 1971
Language Silent film
Producer IWF
Production Year 1969

Technical Metadata

IWF Technical Data Film, 16 mm, 106 m ; SW, 10 min

Content Metadata

Subject Area Life Sciences
Abstract Thekamöbe. Aufsicht. Nahrungsaufnahme durch Phagozytose (Pseudochlorella). Teilungsstadien mit Schalenbildung. Innere Organisation. Bildung und Rückbildung von Gasvakuolen. Mit Zeitraffung.
The film depicts locomotion and reproduction of the rare thecamoeba Arcella dentata (Rhizopoda, Testacea). First of all, the general morphology of the organism is shown: a dish-shaped test, peripherally ornamented by a regularly spaced circle of spines, with its wall exhibiting a hexagonal structure; and a concentrically stratified protoplast, which, by means of epipodia, is attached to the thecal wall. The activity of contractile vacuoles, the movement by means of pseudopodia, and the ingestion of food are then demonstrated. Subsequently, the film documents morphogenesis and cell division, repeatedly photographed in dorsal aspect and in lateral view. Finally, one may follow the formation and the resorption of intracytoplasmic gas vacuoles.
Keywords Thecamoeben
Zellteilung / Protozoa
Nahrungsaufnahme / Amoebina
Fortpflanzung, ungeschlechtliche / Amoebina
reproduction, asexual / Amoebina
ingestion / Amoebina
cell divison / Protozoa

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