How to Distinguish from Similar Species: This species looks rather similar to the rare A. brevirostris and A. chacei, and to A. smithi, which grows larger, is found farther south, and has a more acute rostrum. Few other species have the distinctively shaped rostrum.
Geographical Range: Worldwide at lower latitudes; to 51 degrees north in the Eastern Pacific.
Depth Range: Deep midwater, 200 - 2200 m
Biology/Natural History: This bathypelagic midwater shrimp is an active, steady swimming predator but does not vertically migrate. A cosmopolitan species at tropical and subtropical latitudes, there is substantial genetic distance between populations separated by large geographical distances (such as between California and Hawaii, John F. Scarbrough dissertation, Loma Linda Universtiy 2004). It is less common this far north than it is in tropical and subtropical waters.
Kozloff 1987, 1996
Chase, Fenner A., 1986. The Caridian Shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition, 1907-1910, Part 4: Families Oplophoridae and Nematocarcinidae. Smithsonian Contributions to Zoology Number 432. Paperback, 82 pp.
Hendrickx, Michel E. and Flor Delia Estrada navarrete, 1996. Los Camarones Pelagicos (Crustacea: Dendrobranchiata y Caridea) del Pacifico Mexicano. Comision Nacional para el Conocimiento y Use de la Biodiversidad. Paperback, Spanish 157 pp. ISBN 968-29-8882-9
Krygier, E.E and W.G. Pearcy (1981) Vertical Distribution and biology of pelagic decapod crustaceans off Oregon. Journal of Crustacean Biology 1: 70–95
Wasmer, Robert A., 1967. Bathypelagic shrimps (Penaeidea and Caridea) from the eastern North Pacific. Master's thesis, Walla Walla College, College Place, WA. 86 pp.
General Notes and Observations: Locations, abundances, unusual behaviors:
for a mpg video
of this shrimp and a description, taken by me on shipboard in 1996 off
Point Conception, CA (9 megabytes)
Authors and Editors of Page:
Dave Cowles (2005): Created original page