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Hydractinia echinata (Hydrozoa) - Organisation des Stockes, Nahrungsaufnahme

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Formal Metadata

Title Hydractinia echinata (Hydrozoa) - Organisation des Stockes, Nahrungsaufnahme
Alternative Title Hydractinia echinata (Hydrozoa) - Organization of the Colony; Ingestion of Food
Author Müller, Werner
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-2079
IWF Signature E 2079
Publisher IWF (Göttingen)
Release Date 1974
Language Silent film
Producer IWF
Production Year 1973

Content Metadata

Subject Area Life Sciences
Abstract Das marine, stockbildende Hydrozoon wächst auf Schneckengehäusen, die von Einsiedlerkrebsen bewohnt sind. Nähr-, Geschlechts-, Tentakel- und Wehrpolypen und ihre Funktionen; entodermales Kanalsystem der Stoffverteilung als Kommunikationssystem des Stockes. Nahrungstransport durch peristaltische Pulsationen.
The colony of the marine hydroid Hydractinia echinata grows symbiontically on shells of hermit crabs. It develops four types of hydranths: gastrozooids, gonozooids, spiralzooids, tentaculozooids. These polyps and their main behavioural reactions are demonstrated. The hydranths represents "organs" of a suprapersonal individual, that is the whole colony, and are interconnected by a system of endodermal channels through which fluid and food are distributed. Pulsations of the hydranths and of the stolonial endodermal tubes provide forces for the transport.
Keywords Hydroidpolyp
Stachelpolyp
Hydractinia echinata
Organisation / Coelenterata
Nahrungsaufnahme / Coelenterata
ingestion / Coelenterata
organization / Coelenterata
Hydractinia echinata
snail fur

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