Home|Search|Identify|Taxonomic tree|Quiz|About this site|Feedback
Developed by ETI BioInformatics
Characteristics, distribution and ecology
Taxonomische classification
Synonyms and common names
Literature references
Images, audio and video
Distribution map
Links to other Web sites

Müller, 1776

Description

External appearance
Solitary. Body elliptic-oblong, up to 60 mm in length and attached along the left side. Test cartilaginous, thin, greenish; usually with small rough projections; often covered with shell fragments.

Characters
Oral siphon 6-8 lobed and placed terminal; atrial siphon 6-lobed and positioned 1/2 to 2/3 of body length away from oral siphon. About 40-120 simple, thin branchial tentacles placed in three distinct rows. Branchial sac with numerous rows of straight stigmata; no folds; with papillae at the intersections of longitudinal vessels with transverse vessels. Small irregular papillae on right face of dorsal lamina. Gut loop on the left of branchial sac; stomach round with numerous longitudinal folds. Elongated ovaries covering the left side of the intestinal loop; pear-shaped testes covering the right side of the intestine (A. conchilega morphology).

Habitat
Attached to hard substrata; from lower shore depths of more than 1000 metres.

Distribution
From Norway to the Mediterranean.

Ascidia conchilega