Dissodinium pseudocalani (Dinophyceae) - Vegetative Vermehrung

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Formal Metadata

Title
Dissodinium pseudocalani (Dinophyceae) - Vegetative Vermehrung
Alternative Title
Dissodinium pseudocalani (Dinophyceae) - 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 1843
Publisher
Release Date
1972
Language
Silent film
Producer
Institut für den Wissenschaftlichen Film (IWF)
Production Year
1970

Content Metadata

Subject Area
Abstract
Dinoflagellat. Aussaugen der Eier von Pseudocalanus elongatus (Copepoda) durch die Schwärmer (Dinosporen) des farblosen Parasiten. Sporogenese (vegetative Vermehrung): Entwicklung zur Primärzyste, Aufteilung des Protoplasten in bis zu 32 Zellen, Differenzierung der Sekundärzysten, Entstehung von 16 oder 32 Dinosporen in den Sekundärzysten, Ausschwärmen der Dinosporen.
The peridinian Dissodinium pseudocalani feeds as an ektoparasite upon the eggs of the copepod Pseudocalanus elongatus. The swarmers (dinospores) of the parasite suck out the eggs holozoically by means of a sucker. The parasitic stage is followed by vegetative multiplication (sporogenesis). The bladder-like swollen peridinian develops into a primary cyst. Inside this the protoplast divides into 4, 8, 16 or 32 cells resulting in secondary cysts. Dissolving the cyst membranes the dinospores become free and are again capable of infecting eggs. Simultaneously, during sporogenesis the food clump, initially filling the whole protoplast, shrinks to a tiny reddish body.
Keywords Pseudocalanus elongatus Dinoflagellat Dissodinium pseudocalani Zysten Sporen / Pyrrhophyceae Fortpflanzung, ungeschlechtliche / Pyrrhophyceae reproduction, asexual / Pyrrhophyceae spores / Pyrrhophyceae cysts Dissodinium pseudocalani dinoflagellate Pseudocalanus elongatus
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