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Coscinodiscus granii (Centrales) - Vegetative Vermehrung


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Formal Metadata

Title Coscinodiscus granii (Centrales) - Vegetative Vermehrung
Alternative Title Coscinodiscus granii (Centrales) - Vegetative Reproduction
Author Drebes, Gerhard
License CC Attribution - NoDerivatives 3.0 Germany:
You are free to use, copy, distribute and transmit the work or content in unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor.
DOI 10.3203/IWF/E-1840
IWF Signature E 1840
Publisher IWF (Göttingen)
Release Date 1975
Language Silent film
Producer Institut für den Wissenschaftlichen Film (IWF)
Production Year 1971

Content Metadata

Subject Area Life Sciences
Abstract Kieselalge. Gürtel aus einem breiten, keilförmigen Zwischenband und einem sehr schmalen Gürtelband, Entstehung des Gürtels der Hypovalva beim präprophasischen Streckungswachstum, Wanderung der Kerne in die Gürtelregion vor der Zellteilung, Rückwanderung der Kerne in die Epivalven nach der Teilung. Mit Zeitraffung.
Coscinodiscus granii is a marine planktonic diatom within the order Centrales. The large cells, united in pairs during interphase, are circular in valve view and cuneiform in girdle view. The valves are furnished with a fine radial aerolation. The girdle consists of a broad cuneate intercalary band and a very narrow girdle band. The hypovalva is lacking a girdle during interphase. This girdle is formed only during the pre-prophasic stretching growth. Preceding cell division the nucleus moves from the centre of the epivalva into the girdle region. After division of both the nucleus and the cell the nuclei migrate back again into the epivalve of the daughter cells.
Keywords Algen / Kieselalge
Coscinodiscus granii
Fortpflanzung, ungeschlechtliche / Chrysophyceae
reproduction, asexual / Chrysophyceae
Coscinodiscus granii
algae / diatom

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