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Perforatus perforatus

Perforated barnacle

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Perforatus perforatus

Concarneau Bay, France, lower shore, 2007, WBN

Description

Perforatus perforatus is a cirripedia with a base reaching 3 cm in diameter and up to 5 cm for deeper specimens. The external plates are vertically ribbed. Their pointed ends as well as the conical organization of the plates evoke the form of a small volcano. They are greyish with shades of purple or pink. The operculum that closes the upper aperture is depressed inside the cone formed by the plates. This operculum consists of two pairs of movable plates that open to allow the cirri out so that the barnacle could catch food. In case of emergency or during emersed periods, the operculum is kept hermetically closed thanks to a brown or purple flap with blue and white patches. The common barnacle generally lives in groups attached to rocks or immersed structures such as ships' bottom.

Distribution

Perforatus perforatus is found from surface to 20 meters deep in the Atlantic Ocean from West Africa to Wales, in the English Channel and in the Mediterranean Sea.

Classification

Source : World Register of Marine Species
Dernière mise à jour 26-05-2024

Glossaire de la page

Cirri : small appendages resembling feathery tentacles.

Authors

Text : Wilfried Bay-Nouailhat, Anne Bay-Nouailhat © 2007 - 2024.

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 : Perforatus perforatus in GBIF Secretariat (2019). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2024-05-26.

Guide des Tuniciers

Classification

Source : World Register of Marine Species


Dernière mise à jour 26-05-2024

Guide des Tuniciers

Page glossary

Cirri : small appendages resembling feathery tentacles.

Authors

Text : Wilfried Bay-Nouailhat, Anne Bay-Nouailhat © 2007 - 2024.

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

How to cite this page

Bay-Nouailhat W., Bay-Nouailhat A., March 2007, Description of Perforatus perforatus, [On line] https://european-marine-life.org/24/perforatus-perforatus.php, consulted on 2024 May 26.

Authors

Photographie de Wilfried Bay-Nouailhat

Wilfried Bay-Nouailhat

Diver - Naturalist
Underwater Photographer

Photographie de Anne Bay-Nouailhat

Anne Bay-Nouailhat

Project manager in marine environment
Professional diver - Naturalist

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