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Defence of Conspecific Habitat Competitors in Hydractinia echinata


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Formal Metadata

Title Defence of Conspecific Habitat Competitors in Hydractinia echinata
Alternative Title Abwehr artgleicher Raumkonkurrenten bei Hydractinia echinata
Author Müller, Werner
Contributors Susanne Eickhoff (Redaktion)
Jürgen Kaeding, Horst Wittmann (Kamera)
Christine Danckwortt (Schnitt)
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-1907eng
IWF Signature C 1907
Publisher IWF (Göttingen)
Release Date 1995
Language English
Producer IWF
Production Year 1993

Content Metadata

Subject Area Life Sciences
Abstract Intraspecific tissue incompatibility can also be found in some lower organisms, for example the Cnidariae. It is shown how a colony of Hydractinia echinata attains full growth and how it behaves when it comes in stolonal contact with compatible respectively incompatible members of their own species. If the colonies are histologically compatible they will fuse, if they are incompatible special nettle cells will be lanced against the competitor at the point of contact. The poison can lead to paralysation. Persisting contact of two competitors causes massive degeneration symptoms.
Keywords histocompatibility
competition / Cnidaria
nettle cell
cell recognition
tissue incompatibility
Hydractinia echinata
snail fur
Eupagurus sp.
hermit crab

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