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Fortpflanzung der Suktorien

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Metadata

Formal Metadata

Title Fortpflanzung der Suktorien
Alternative Title Reproduction of the Suctoria
Author Grell, Karl Gottlieb
License No Open Access License:
German copyright law applies. This film may be used for your own use but it may not be distributed via the internet or passed on to external parties.
DOI 10.3203/IWF/C-913
IWF Signature C 913
Publisher IWF (Göttingen)
Release Date 1966
Language German
Producer Institut für den Wissenschaftlichen Film (IWF)
Production Year 1965

Technical Metadata

IWF Technical Data Film, 16 mm, LT, 151 m ; SW, 14 min

Content Metadata

Subject Area Life Sciences
Abstract Exogene Knospung bei Paracineta limbata (Bildung eines Schwärmers), Ephelota gemmipara (mehrere Schwärmer gleichzeitig), Tachyblaston (Generationswechsel zwischen parasitischer und freilebender Generation). Endogene Knospung bei Acineta tuberosa und Tokophrya lemnarum (Makronucleusvorgänge). Metamorphose der Schwärmer, Konjugation (geschlechtliche Fortpflanzung) wie bei anderen Ciliaten, Anisogamontie bei Ephelota.
Survey of the various kinds of reproduction if Suctorians. Asexual reproduction occurs by budding. External (exogenous) budding is shown in three examples. In Paracineta limbata only one swarmer is formed. Ephelota gemmipara produces several swarmers, simultaneously. In Tachyblaston ephelotensis development is an alternation of generations, in which one parasitic and one generative generation alternate. Acineta tuberosa and Tokophrya lemnarum (with peculiar processes in the macronucleus) serve as examples of internal (endogenous) budding. The metamorphosis of the swarmers is shown in Tokophrya lemnarum and Ephelota gemmipara. Sexual reproduction of Suctorians is a conjugation. While conjugation in most species (e. g. Tokophrya lemnarum) follows the same pattern as in other ciliates, it has been modified in Ephelota gemmipara into an "anisogamonty" one gamont ("microgamont") being resorbed by the other ("macrogamont").
Keywords Tokophrya lemnarum
Tachyblaston
Paracineta limbata
Ephelota gemmipara
Ephelota
Ciliata
Acineta tuberosa
Generationswechsel
Fortpflanzung, ungeschlechtliche / Suctoria
Reproduction, asexual / Suctoria
alternation of generations
Acineta tuberosa
Ciliata
Ephelota
Ephelota gemmipara
Paracineta limbata
Tachyblaston
Tokophrya lemnarum

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  241 ms - page object

Version

AV-Portal 3.7.0 (943df4b4639bec127ddc6b93adb0c7d8d995f77c)