Arrow Worms: Chaetognatha
No Common Name (eukrohnia Fowleri): Species Accounts
Physical characteristics: Eukrohnia fowleri worms have eight to fourteen hooks and two to thirty-one back teeth. There are no front teeth. The body reaches a length of about 1.5 inches (40 millimeters), and the tail length is about one-fourth the length of the body. The neck is narrower than the division between the trunk and the tail. There are long fins on the sides of both the trunk and the tail. The head is small with large oval eyes that have diamond-shaped color spots.
Geographic range: Eukrohnia fowleri (abbreviated to E. fowleri) worms live in the Atlantic, Pacific, and Indian oceans.
Habitat: E. fowleri worms live in open water in the middle depths of the sea. They do not live in extremely cold water.
Diet: E. fowleri worms eat tiny crustaceans.
Eukrohnia fowleri worms live in open water in the middle depths of the sea. They do not live in extremely cold water.
Behavior and reproduction: Scientists do not know how E. fowleri worms behave. These worms grow and reproduce very slowly. The fertilized eggs develop in a sac hanging from the worm.
Eukrohnia fowleri and people: E. fowleri worms have no known importance to people.
Conservation status: E. fowleri worms are not considered threatened or endangered. ∎
FOR MORE INFORMATION
Books:
Brusca, Richard C., Gary J. Brusca, and Nancy Haver. Invertebrates. 2nd ed. Sunderland, MA: Sinauer, 2002.
Niesen, Thomas M. The Marine Biology Coloring Book. 2nd ed. New York: HarperResource, 2000.
Periodicals:
Davis, Cabell S., Carin J. Ashjian, and Philip Alatalo. "Zooplankton Diversity: A Bizarre—and Changing— Array of Life Forms." Oceanus (spring-summer 1996): 7–11.
Web sites:
Sutton, Tracey. "Today's Highlights." Mar-Eco. http://www.mar-eco.no/Shiptoshore/g._o._sars/cruise_journal_gosars/20June (accessed on March 2, 2005).
Thuesen, Erik V. "Chaetognatha." Evergreen State College. http://academic.evergreen.edu/t/thuesene/chaetognaths/chaetognaths.htm (accessed on March 2, 2005).
Additional topics
- Arrow Worms: Chaetognatha - No Common Name (pterosagitta Draco): Species Accounts
- Other Free Encyclopedias
Animal Life ResourceJellyfish, Sponges, and Other Simple AnimalsArrow Worms: Chaetognatha - Physical Characteristics, Behavior And Reproduction, No Common Name (pterosagitta Draco): Species Accounts, No Common Name (eukrohnia Fowleri): Species Accounts - GEOGRAPHIC RANGE, HABITAT, DIET, ARROW WORMS AND PEOPLE, CONSERV