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Rotifers: Rotifera

No Common Name (seison Nebaliae): Species Accounts

Physical characteristics: Seison nebaliae rotifers are 0.03 to 0.1 inch (800 to 2,500 micrometers) long. Males and females are the same size. The head is egg shaped and has a long neck made up of parts that can retract like the sections of a telescope. The trunk is oval, and the foot is long and made up of sections. Rather than toes, these rotifers have a sticky disk they use to attach themselves to sea fleas.

Geographic range: Seison nebaliae (abbreviated as S. nebaliae) rotifers live in the Atlantic Ocean off the coast of Europe and in the Mediterranean Sea.

Habitat: S. nebaliae rotifers live on sea fleas.

Diet: S. nebaliae rotifers eat bacteria.

Seison nebaliae rotifers live on sea fleas. (Illustration by Joseph E. Trumpey. Reproduced by permission.)

Behavior and reproduction: Except that S. nebaliae rotifers live on sea fleas, scientists do not know how they behave. These rotifers use sexual reproduction.

Seison nebaliae and people: S. nebaliae rotifers have no known importance to people.

Conservation status: S. nebaliae rotifers are not considered threatened or endangered. ∎



Smith, Douglas Grant. Pennak's Freshwater Invertebrates of the United States: Porifera to Crustacea. 4th ed. New York: Wiley, 2001.

Web sites:

"Rotifers." http://www.micrographia.com/specbiol/rotife/homebdel/bdel0100.htm (accessed on February 11, 2005).

Russell, Bruce J. "Whirling Animals." Biomedia. http://ebiomedia.com/gall/rotifers/rotifermain.html (accessed on February 11, 2005).

Additional topics

Animal Life ResourceJellyfish, Sponges, and Other Simple AnimalsRotifers: Rotifera - Physical Characteristics, Behavior And Reproduction, No Common Name (asplanchna Priodonta): Species Accounts, No Common Name (seison Nebaliae): Species Accounts - GEOGRAPHIC RANGE, HABITAT, DIET, ROTIFERS AND PEOPLE, CONSERVATION STAT