Sea walnut

Mnemiopsis leidyi

ORDER Cydippida

FAMILY Bolinopsidae

TAXONOMY

Mnemiopsis leidyi A. Agassiz, 1865.

OTHER COMMON NAMES None known.

PHYSICAL CHARACTERISTICS

Lobate ctenophore reach 3.9 in (10 cm) in length and with four deep lateral furrows from the edges of the oral lobes to the stato-cyst. The oral lobes are smooth and elongate, as are the auricles.

DISTRIBUTION

West coast of the Atlantic Ocean and, more recently, the Sea of Azov and the Black Sea.

HABITAT

Shallow waters, near shore, and in bays and estuaries. BEHAVIOR

There are two distinct feeding behaviors: either swimming (oral end first) or being stationary (with the oral end down). The majority of time is spent actively swimming vertically, with the latter behavior being seen primarily in the lab and likely being an energy-conserving behavior.

FEEDING ECOLOGY AND DIET

Feeds on barnacle nauplii, small zooplankters, copepods, and both fish eggs and larvae.

REPRODUCTIVE BIOLOGY

Nothing is known.

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