Holaxonia
| Holaxonia | ||||||||||
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Pinnigorgia sp. |
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| Systematics | ||||||||||
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| Scientific name | ||||||||||
| Holaxonia | ||||||||||
| Studer , 1887 |
The Holaxonia are a suborder of the Octocorallia . They belong to the gorgonian-like corals. The real sea fans (Gorgoniidae) belong to them .
Their flexible, horn-like axial skeleton (medulla) consists of individual fibers of gorgonine , between which crystalline calcium carbonate is embedded. One family, the Keroeididae, forms the calcium deposits in the form of sclerites . The interior of the medulla is a longitudinal, hollow tube that is divided into chambers. The medulla is covered by the coenenchyme from which the eight-rayed polyps grow.
Many Holaxonia live in symbiosis with zooxanthellae from which they get a large part of their nutrients. They represent a large part of the coral fauna in the coral reefs of the Caribbean and replace the leather corals (Alcyoniidae) that do not occur there .
Many zooxanthellate Holaxonia from the Caribbean, such as Plexaura , Pseudoplexaura , Plexaurella , Pseudopterogorgia , as well as Rumphella and Pinnigorgia from the tropical Indo-Pacific are well preserved in saltwater aquariums .
Familys
- Acanthogorgiidae Gray, 1859
- Real sea fan (Gorgoniidae) Lamouroux, 1812
- Keroeididae Kinoshita, 1910
- Plexauridae Gray, 1959
literature
- KORALLE, marine aquaristic specialist magazine, No. 39 June / July 2006, Natur und Tier Verlag Münster, ISSN 1439-779X
- SA Fosså, & AJ Nilsen: Coral Reef Aquarium , Volume 4, Birgit Schmettkamp Verlag, Bornheim, ISBN 3-928819-05-4
- K. Fabricius & P. Alderslade: Soft Corals and Sea Fans . 2001, Australian Institute of Marine Science. ISBN 0-642-32210-4