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Pycnoclavella aurilucens Garstang, 1891

Orange light sea squirt

Pycnoclavella aurilucens

Ile de Groix, France, 10 meters, 2012, WBN

Pycnoclavella aurilucens

Pointe de Trévignon, France, 8 meters, 2008, WBN

Pycnoclavella aurilucens

Camaret, France, 10 meters, 2008, WBN

Pycnoclavella aurilucens

Illes Medes, Spain, 4 meters, 2018, WBN

Pycnoclavella aurilucens

Illes Medes, Spain, 5 meters, 2009, WBN

Description

Pycnoclavella aurilucens is a colonial ascidian. Each zooid is 6 mm in height and 2 mm in diameter. They are joined together by a thick basal stolon encrusting rocks and may form colonies up to 10 cm in diameter. Zooids arise from a short stalk erected from the basal crust. The test is transparent and three spots of various colour, orange, yellow or white can be seen on the upper part of the branchial sac. In winter, zooids disappear, and the basal stolon is the only remaining part of the colony. In Spring, zooids bud from the stolon.
It lives attached to rocks or hydrarians from 5 to 25 meters deep in current-swept areas

Distribution

Pycnoclavella aurilucens is found in the Atlantic Ocean, the English Channel and the Mediterranean Sea.

Image satellite: © Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.

Données de distribution : Pycnoclavella aurilucens Garstang, 1891 in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2020-09-25.

Classification

Source : World Register of Marine Species


Biota (Superdomain)
Animalia (Kingdom)
Chordata (Phylum)
Tunicata (Subphylum)
Ascidiacea (Class)
Aplousobranchia (Order)
Clavelinidae (Family)
Pycnoclavella (Genus)
Pycnoclavella aurilucens (Species)

Page glossary

Zooid : individual, single animal.

Stolon : root-like element binding together the individuals of a colony.

Test : or tunic: thick layer secreted by the mantel containing cellulose and protecting the animal.

Authors

Text : Anne Bay-Nouailhat © 2005 - 2020.

Photos : © Wilfried Bay-Nouailhat. Published with his kind permission.
Websites and reference works : Consult bibliography

Image satellite: © Esri, DigitalGlobe, GeoEye, Earthstar Geographics, CNES/Airbus DS, USDA, USGS, AeroGRID, IGN, and the GIS User Community.

Données de distribution : Pycnoclavella aurilucens Garstang, 1891 in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2020-09-25.

How to cite this page

Bay-Nouailhat A., November 2005, Description of Pycnoclavella aurilucens, [On line] http://european-marine-life.org/32/pycnoclavella-aurilucens.php, consulted on 2020 September 25.

Author

Photographie de Anne Bay-Nouailhat

Anne Bay-Nouailhat

Project manager in marine environment
Professional diver - Naturalist

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