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Styela clava Herdman, 1881

Leathery sea squirt

Styela clava

Rade de Brest, France, 8 meters, 2011, WBN

Styela clava

Concarneau Bay, France, 6 meters, 2011, WBN

Description

Styela clava is a solitary ascidian of up to 12 cm high. It is club-shaped erected from a narrow stalk attached to the sustratum. The stalk size may be a third of the overall ascidian. The test is firm, leathery and wrinkled. Its colour is brown with white mottlings. Sometimes, algae or some invertebrates may fix and grow on it. The terminal siphons are close to each other. It lives in shallow water where water is warmer, in harbours, on piles, hulls or rocks and stones.

Distribution

Styela clava first appeared in the English Channel, in Plymouth in 1953 and quickly spread through the North Sea, the Baltic Sea and through the Atlantic Ocean toward Spain. Originated from North-Western Pacific, Japan and Korea, it was probably introduced in Europe during the Korean War attached to battleship-hulls. Since 1981, it was also described on the other side of the Atlantic.

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

Données de distribution : Styela clava Herdman, 1881 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)
Stolidobranchia (Order)
Styelidae (Family)
Styela (Genus)
Styela clava (Species)

Page glossary

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

Authors

Text : Anne Bay-Nouailhat © 2006 - 2020.

Photos : © Wilfried Bay-Nouailhat. Publiée(s) avec son aimable autorisation.
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 : Styela clava Herdman, 1881 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., January 2006, Description of Styela clava, [On line] http://european-marine-life.org/32/styela-clava.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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