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
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.
Identifiers
IWF Signature
E 1840
Publisher
Release Date
1975
Language
Silent film
Producer
Institut für den Wissenschaftlichen Film (IWF)
Production Year
1971

Content Metadata

Subject Area
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 Kieselalge Coscinodiscus granii Fortpflanzung, ungeschlechtliche / Chrysophyceae reproduction, asexual / Chrysophyceae Chrysophyceae Coscinodiscus granii diatom algae / diatom
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