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Dissodinium pseudocalani (Dinophyceae) - Vegetative Vermehrung


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

Content Metadata

Subject Area Life Sciences
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
Dissodinium pseudocalani
Sporen / Pyrrhophyceae
Fortpflanzung, ungeschlechtliche / Pyrrhophyceae
reproduction, asexual / Pyrrhophyceae
spores / Pyrrhophyceae
Dissodinium pseudocalani
Pseudocalanus elongatus

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