No common name

Clavelina lepadiformis

ORDER Enterogona

FAMILY Clavelinidae

TAXONOMY

Ascidia lepadiformis Mueller, 1776, Norwegian fjords.

OTHER COMMON NAMES None known.

PHYSICAL CHARACTERISTICS

Colonial species. Colony consists of numerous upright (up to 1.2 in, or 3 cm, in height) zooids united only by their bases. The species can be recognized easily by its color pattern: completely transparent zooids have longitudinal white lines along the endostyle and dorsal lamina, white rings on the siphons and on the upper edge of the branchial sac, and a short white strip between the siphons.

DISTRIBUTION

Europe from western Norway to Spain and the Mediterranean Sea. Local populations are found in Morocco, Madeira, and the Azores. Introduced to South Africa, probably via the bottoms of ships.

HABITAT

Rocky bottom at depths from 0 to 164 ft (0-50 m). BEHAVIOR

Sessile, attached, immobile species.

FEEDING ECOLOGY AND DIET Filter feeder.

REPRODUCTIVE BIOLOGY

Larvae incubated in the atrial cavity.

CONSERVATION STATUS Not listed by the IUCN.

SIGNIFICANCE TO HUMANS None known. ♦

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