No common name

Ciona intestinalis

ORDER Enterogona

FAMILY Cionidae

TAXONOMY

Ascidia intestinalis Linnaeus, 1767, Europe.

OTHER COMMON NAMES None known.

PHYSICAL CHARACTERISTICS

Cylindrical body up to 5.9 in (15 cm) in length, attached by posterior end. Test soft and translucent, colorless. Siphons are prominent and terminal, the branchial siphon marked by eight and the atrial siphon by six red pigment spots on the margin.

DISTRIBUTION

One of the most widely distributed, almost cosmopolitan ascid-ian species, especially abundant along the coasts of northern Europe. Recorded also in the Mediterranean Sea, along the At lantic coast of North America and parts of the Atlantic and Pacific coasts of South America, California, Hawaii, South Africa, Australia, New Zealand, and Japan.

HABITAT

Occurs on rocks, stones, shells, and algae at depths from 0 to about 1,640 ft (0-500 m).

BEHAVIOR

Solitary species, often forming large populations of many crowded specimens. Sessile, attached, immobile species.

FEEDING ECOLOGY AND DIET Filter feeder.

REPRODUCTIVE BIOLOGY

Ova released directly into seawater through the atrial siphon. Larvae are not incubated in the atrial cavity.

CONSERVATION STATUS Not listed by the IUCN.

SIGNIFICANCE TO HUMANS

Often used as a laboratory specimen for various general types of biological research, in particular, cell biology and embryology. ♦

Biology NameFilter Biologis Images
Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

Get My Free Ebook


Post a comment