Aspidochirotida
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| Pit , 1840 |
The Aspidochirotida are an order of sea cucumbers . The animals live in all oceans worldwide.
features
The Aspidochirotida have a sausage or cylinder-shaped body, which can also be very flattened. Your skin is very thick. They have 10 to 30 unbranched mouth tentacles, the ends of which are provided with small discs with extensions. In German they are therefore also called shield tentacle sea rollers . They are detritus eaters that absorb sand and digest the organic components of the soil. There are species with and without a creep sole. Water lungs are always present, Cuvier's tubes only in the Holothuriidae family . The species that live in coral reefs are often very brightly colored, those that live on muddy or sandy bottoms are more blackish in color.
Systematics
There are three families in the order, 35 genera and 340 species. Only the species that have been described in Wikipedia so far are listed here.
- Order Aspidochirotida
- Family Holothuriidae
- Dashed sea cucumber ( Bohadschia graeffei )
- Marbled sea cucumber ( Bohadschia marmorata )
- Forskal's sea roller ( Holothuria forskali )
- White-spotted sea cucumber ( Holothuria leucospilota )
- Whitetip sea cucumber ( Holothuria poli )
- Tube sea cucumber ( Holothuria tubulosa )
- Family Stichopodidae
- Variable sea cucumber ( Isostichopus badionotus )
- Green gear sea roller ( Stichopus chloronotus )
- Royal Sea Cucumber ( Stichopus regalis )
- Pineapple sea roller ( Thelenota ananas )
- Synallactidae family
- Family Holothuriidae
literature
- Volker Storch, Ulrich Welsch: Systematic Zoology . G. Fischer, Stuttgart 1997, ISBN 3-437-25160-0
- Horst Füller u. a .: Urania animal kingdom, invertebrates: 2 . 2nd Edition. Urania-Verlag, Leipzig 2000, ISBN 3-332-01175-8
Web links
- Integrated Taxonomic Information System Aspidochirotida Pit, 1840
- ↑ Kerr, Alexander M. 2000. Holothuroidea. Sea cucumbers. Version 01 December 2000. in The Tree of Life Web Project