Comprehensive Description

Read full entry

Description

This species is a compound, colonial ascidian, with small, individual zooids embedded in a common matrix or tunic. The colony can grow extensively, covering large areas of substrate. Colony shape varies from encrusting sheets to long, irregular lobes, with layers often growing more than 4 mm in thickness. Individual zooids are very small, measuring approximately 1 mm. The tunic also contains microscopic calcareous spicules; however, these spicules are not abundant and are mostly confined to the surface layer of the tunic. Each spicule measures up to 58 μm (average 30 μm) in diameter and shaped like a multi-rayed star (8-11 rays). The tunic surface is characterized by narrow, spicule-free dark lines that meander between groups of zooids. Overall color varies from creamy white, pale yellow, or beige to pinkish or pale orange. See Lambert, 2009 for more detailed description.

Trusted

Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Frey, Melissa

Source: Marine Invaders of the NE Pacific

Belongs to 1 community

Disclaimer

EOL content is automatically assembled from many different content providers. As a result, from time to time you may find pages on EOL that are confusing.

To request an improvement, please leave a comment on the page. Thank you!