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Aplidium punctum

Aplidium punctum

Orange flake-ascidian

   Aplidium punctum is a colonial ascidian forming capitate colonies reaching 6 cm in height. Up to forty zooids are embedded in a common test forming a flat-topped lobe arising from a stalk. The base of the colony is often encrusted with sand. The test is transluscent and the general colour of the colony is pale orange. Each zooid has a six-lobed oral siphon and a red spot at the upper-end of the endostyle. Colonies of orange flake-ascidians often live aggregated, forming bunches attached to rocks from low water level to 25 meters deep.
It is found in the North-East Atlantic and the English Channel.

Classification

 (source : European Register of Marine Species)

  • Chordata [Phylum]
  • Tunicata [Subphylum]
  • Ascidiacea [Class]
  • Enterogona [Order]
  • Aplousobranchia [Suborder]
  • Polyclinidae [Family]
  • Aplidium punctum (Giard, 1873)

Page glossary


Zooid : Individual, single animal.
Test : or tunic: thick layer secreted by the mantel containing cellulose and protecting the animal.
Oral siphon : Opening by which water is drawn in the ascidian.
Endostyle : Groove through which food particles are moved up to the oesophagus.

Aplidium punctum. Aplidium punctum
Close view

Aplidium punctum. Aplidium punctum

Aplidium punctum. Aplidium punctum

Authors


Top photograph :
© Wilfried Bay-Nouailhat. Published with author's kind permission : 
Aplidium punctum, Iles Glénan, South Brittany, West of France. Depth 12 meters.
Bottom photographs : © Wilfried Bay-Nouailhat. Published with author's kind permission : 
Aplidium punctum, Close view. Ria d'Etel, South Brittany, West of France. Depth 11 meters.
© Wilfried Bay-Nouailhat. Published with author's kind permission : 
Aplidium punctum, . Iles Glénan, South Brittany, West of France. Depth 8 meters.
© Wilfried Bay-Nouailhat. Published with author's kind permission : 
Aplidium punctum, . Iles Glénan, South Brittany, West of France. Depth 7 meters.
Text :  Anne Bay-Nouailhat © 2005-2017.
Translation :  Anne Bay-Nouailhat © 2007-2017.

How to cite this page in publications


Bay-Nouailhat A., March 2005, Description of Aplidium punctum, Available on line at http://www.european-marine-life.org/32/aplidium-punctum.php, consulted on 28 April 2017.
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