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Entwicklung von Sphaeroplea annulina (Chlorophyta)

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Formal Metadata

Title Entwicklung von Sphaeroplea annulina (Chlorophyta)
Alternative Title Development of Sphaeroplea annulina (Chlorophyta)
Author Pirson, André
Kaiser, Ursula
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.
DOI 10.3203/IWF/C-1213
IWF Signature C 1213
Publisher IWF (Göttingen)
Release Date 1976
Language German
Producer IWF
Production Year 1974

Technical Metadata

IWF Technical Data Film, 16 mm, LT, 97 m ; F, 9 min

Content Metadata

Subject Area Life Sciences
Abstract Die vegetative Vermehrung wird beim Eintreten von Stickstoffmangel von der sexuellen Reproduktion abgelöst. Umwandlung der vielkernigen Zellen in Antheridien und Oogonien, Entstehung der Spermatozoiden und Eier. Chemotaktische Anlockung der männlichen Gameten, deren Eindringen in die Oogonien, Eibefruchtung, Entwicklung der kugeligen Hypnozygoten. Zygotenkeimung, Auswachsen der zunächst zweigeißligen Zoosporen zu Fäden.
Under conditions of limiting oxygen vegetative reproduction stops and is replaced by sexual reproduction. Metamorphosis of multinucleate cells by antheridia and oogonia. Production of spermatozoids and eggs. Chemotatic attraction of the male gametes, their penetration into the oogonia, fertilization, development of spherical hypnozygotes, zygote germination, growth of the initially bicillate zoospores to threads.
Keywords Sphaeroplea annulina
Fortpflanzung, geschlechtliche / Chlorophyceae
Zoosporen
zoospores
reproduction, sexual / Chlorophyceae
Sphaeroplea annulina

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