No common name

Seison nebaliae

FAMILY Seisonidae

TAXONOMY

Seison nebaliae Grube, 1861, Adriatic Sea near Trieste.

OTHER COMMON NAMES

None known.

PHYSICAL CHARACTERISTICS

Measures 0.0315-0.0984 in (800-2,500 pm). Males and females are of similar size. The head is egg-shaped and has a long neck with telescopic, retractable segments. The trunk is oval, and the foot is long and segmented. Toes are missing; instead, there is an adhesive disc that allows attachment to the host, Nebalia. Trophi belong to the special fulcrate type.

DISTRIBUTION

Found on Nebalia from the Mediterranean Sea and the western European Atlantic coast, but there also is one confirmed record from the Sakhalin Islands in the Sea of Okhotsk.

HABITAT

Lives as a commensal on the pleopods of the leptostracan crustacean Nebalia. Commensalism refers to the condition in which a parasite neither harms nor provides any benefits to the host.

BEHAVIOR

Nothing is known.

FEEDING ECOLOGY AND DIET

Feeds exclusively on bacteria.

REPRODUCTIVE BIOLOGY

Obligate sexual reproduction.

CONSERVATION STATUS

Not listed by the IUCN.

SIGNIFICANCE TO HUMANS None known. ♦

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