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Erpobdella octoculata (Hirudinea) - Spermatophorenübertragung, Kokonablage, Schlüpfen der Jungtiere


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Formal Metadata

Title Erpobdella octoculata (Hirudinea) - Spermatophorenübertragung, Kokonablage, Schlüpfen der Jungtiere
Alternative Title Erpobdella octoculata (Hirudinea) - Transfer of Spermatophores, Depositing of Cocoons, Hatching of the Young
Author Westheide, Wilfried
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/E-2562
IWF Signature E 2562
Publisher IWF (Göttingen)
Release Date 1980
Language Silent film
Producer IWF
Production Year 1979

Technical Metadata

IWF Technical Data Film, 16 mm, 122 m ; F, 11 1/2 min

Content Metadata

Subject Area Life Sciences
Abstract Hundeegel. Die zwittrigen Egel umschlingen paarweise ihre Vorderenden und setzen dabei Spermatophoren auf dem Körper des Partners ab. Der Eikokon wird vom Clitellum als Ring sezerniert. In ihm sind mehrere abgelegte Eier zu sehen. Nach dem Abstreifen wird der Ring vom Vorderende des Tieres zum Kokon geformt. Die Jungtiere verlassen den Kokon durch die beiden ursprünglichen Öffnungen.
First a crowd of mature leeches show courtship display. Two different pairs then demonstrate intertwining of their bodies during copulation, and transfer of spermatophores. The process of cocoon formation and deposition can be seen at three different specimens showing secretion of the cocoon wall, turning the body about its longitudinal axis, pulling out the clitellum and the anterior body, and forming the cocoon by the anterior sucker. An accomplished cocoon with embryos and the young leaving the cocoon are the final scenes of the film.
Keywords Egel / Hundeegel
Erpobdella octoculata
Kokonbau / Annelida
Spermatophore / Annelida
Kopulation / Annelida
Fortpflanzung, geschlechtliche / Annelida
reproduction, sexual / Annelida
copulation / Annelida
spermatophore / Annelida
cocoon formation / Annelida
Erpobdella octoculata
leech / dog-leech

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