Overview
|
Critically Endangered |
 |
 | |
 |
Common Names
Common Names in English:
Green Shore Crab, Hairy Shore Crab, Mud-Flat Crab, Oregon Shore Crab, Yellow Shore Cab, Yellow Shore Crab
Description
Physical Description
Species Hemigrapsus oregonensis
This grapsid crab (rectangular carapace, wide-set eyes and no teeth on the carapace between, no rostrum) is a common intertidal crab. The merus
of legs
2-5 is not flattened. The dorsal surface of the carapace does not have transverse ridges
or lines
, and is variously colored
, often with light greenish spots on a dark reddish-brown background, but may be a pale
green, yellow-green, gray-green, or even nearly white. There are 3 teeth on the anterolateral margin
of the carapace. The legs have abundant setae, and the chelipeds have no purple spots, but have yellow or white on the tips
. Carapace width to 34.7 mm in males and 29.1 mm in females.[1]
This species is a better osmoregulator than the other local shore
crabs, which is probably associated with its being more common in estuaries. It also often digs burrows and is capable of withstanding more hypoxic
conditions than the other shore crabs are.[1]
Habitat
Open mud flats, algal mats and eelgrass beds , in bays and estuaries and on open beaches where there is plenty of fine sediment.[1]
Typically found in the intertidal zone at the water's edge at a mean distance from sea level of -15 meters (-50 feet).[2]
Biology
Diet
Feeds mainly at night, mostly on diatoms and green algae, but will eat meat if it has opportunity.[1]
Behavior
Predators:
Predators include shorebirds.
Parasites:
May have the parasitic isopod Portunion conformis in the perivisceral cavity (not evident unless dissected ).[1]
Taxonomy
- Kingdom:
Animalia
(
)
- animals
- Phylum:
Arthropoda
()
- Arthropods
- Class:
Malacostraca
()
- Order:
Decapoda
()
- Decapods
- Family:
Grapsoidea
()
- Genus:
Hemigrapsus
()
- (Dana, 1851)
- Specific name:
oregonensis
- (Dana, 1851)
- Scientific name: - Hemigrapsus oregonensis (Dana, 1851)
- Specific name:
oregonensis
- (Dana, 1851)
- Genus:
Hemigrapsus
(
- Family:
Grapsoidea
(
- Order:
Decapoda
(
- Class:
Malacostraca
(
- Phylum:
Arthropoda
(
Notes
Name Status: Accepted Name .
Similar Species
Pachygrapsus crassipes, which lives mostly farther south, has transverse ridges on the dorsal surface of its carapace and 2 teeth on the anterolateral margin of the carapace. Hemigrapsus nudus has few or no setae on the legs and purple spots on the chelipeds. (Ref. 109953)
Members of the genus Hemigrapsus
ZipcodeZoo has pages for 9 species and subspecies in this genus:
H. crassimanus · H. crenulatus · H. longitarsis · H. nudus (Purple Shore Crab) · H. oregonensis (Oregon Shore Crab) · H. penicillatus · H. sanguineus (Asian Shore Crab) · H. sexdentatus · H. sinensis
More Info
- Search for Pictures: images.google.com
- Search for Scholarly Articles: Google Scholar
- Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
- Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books
Further Reading
- Bulletin - United States National Museum. Washington: Smithsonian Institution Press, [etc.];1877-1971. ENG url p. 270, p. 3, p. 33, p. 435.
- Comparative animal physiology, by David W. Bishop [and others] Philadelphia, Saunders, 1950. ENG url p. 24.
- FWS/0BS. [Washington]Fish and Wildlife Service, U.S. Dept. of the Interior. ENG url p. 109, p. 62, p. 63, p. 64, p. 81, p. 84.
- Fishery bulletin / U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. Washington, D.C.: The Service: ENG url p. 159, p. 160, p. 303, p. 456, p. 464, p. 556, p. 574, p. 983.
- Harriman Alaska series. City of Washington: Smithsonian Institution, 1910-1914. ENG url p. 189.
- Herrick Brown - ITIS Data Development Technician: McLaughlin et al. (2005) Occurrence values: P
- Journal of shellfish research. [S.l.: National Shellfisheries Association, 1981- url p. 103, p. 108, p. 1283, p. 159, p. 178, p. 379, p. 505, p. 558, p. 632, p. 89, p. 914.
- Lee, Seok Hyun and Hyun Sook Ko, 2008. First zoeal stages of six species of Hemigrapsus (Decapoda: Brachyura: Grapsidae) from the northern Pacific including an identification key. Journal of Crustacean Biology 28:4 pp. 675-685
- Malacological notes, III / by Fritz Haas. Chicago, [Ill.]: Field Museum of Natural History, [1943] ENG url p. 14.
- New North American fleas. [Chicago, 1944] ENG url p. 223.
- Occasional papers - San Diego Society of Natural History. San Diego, The Society. ENG url p. 16.
- Problems of relative growth, by Sir Julian S. Huxley...With 105 illustrations. New York, L. MacVeagh, The Dial Press, 1932. ENG url p. 261.
- Proceedings of the National Shellfisheries Association. Plymouth, Mass., Published for the National Shellfisheries Association by MPG Communications. ENG url p. 10, p. 24, p. 25, p. 36.
- Publications - Puget Sound Biological Station. [Seattle?]Puget Sound Biological Station, University of Washington. ENG url p. 358, p. 359, p. 376, p. 396.
- Studies on the time course of salinity and temperature adaptation in the commercial brown penaeus aztecus ives: final report / by A. Venkataramaiah [et al.]. Vicksburg, Miss.: Dept. of Defense, Dept. of the Army, Corps of Engineers, Waterways Experiment Station, Hydraulics Laboratory, 1977. ENG url p. 292.
- Synopsis of the true crabs (Brachyura) of Monterey bay, California, by Frank Walter Weymouth, with plates I-XIV. Stanford University, Cal., The University, 1910. ENG url p. 62, p. 63.
- The Biological bulletin. Woods Hole, Mass.: Marine Biological Laboratory, ENG url p. 108, p. 121, p. 127, p. 128, p. 133, p. 150, p. 156, p. 157, p. 159, p. 160, p. 163, p. 168, p. 169, p. 176, p. 177, p. 191, p. 211, p. 212, p. 213, p. 214, p. 215, p. 217, p. 218, p. 220, p. 221, p. 222, p. 223, p. 224, p. 225, p. 225, p. 226, p. 226, p. 227, p. 228, p. 232, p. 233, p. 234, p. 235, p. 238, p. 238, p. 242, p. 243, p. 244, p. 272, p. 273, p. 275, p. 278, p. 290, p. 307, p. 315, p. 320, p. 332, p. 334, p. 338, p. 354, p. 355, p. 356, p. 357, p. 358, p. 361, p. 362, p. 363, p. 365, p. 367, p. 368, p. 370, p. 392, p. 395, p. 426, p. 427, p. 428, p. 429, p. 430, p. 431, p. 433, p. 434, p. 436, p. 455, p. 464, p. 508, p. 51, p. 519, p. 574, p. 58, p. 61, p. 61, p. 640, p. 641, p. 643, p. 646, p. 7, p. 85, p. 87, p. 90, p. 91, p. 96.
- The biology of marine animals. New York, Interscience Publishers[1960] ENG url p. 532.
- Williams, Austin B., Lawrence G. Abele, D. L. Felder, H. H. Hobbs, Jr., R. B. Manning, et al. 1989. Common and Scientific Names of Aquatic Invertebrates from the United States and Canada: Decapod Crustaceans. American Fisheries Society Special Publication 17. American Fisheries Society. Bethesda, Maryland, USA. 77. ISBN: 0-913235-49-0.
Notes
Contributors
- Bisby FA, Roskov YR, Orrell TM, Nicolson D, Paglinawan LE, Bailly N, Kirk PM, Bourgoin T, van Hertum J, eds (2008). Species 2000 and ITIS Catalogue of Life: 2008 Annual Checklist Taxonomic Classification. CD-ROM; Species 2000: Reading, U.K.
- Brands, S.J. (comp.) 1989-2006. Systema Naturae 2000. The Taxonomicon. Universal Taxonomic Services, Amsterdam, The Netherlands. Accessed October 11, 2006.
- Cowles, Dave. Key to Invertebrates Found At or Near The Rosario Beach Marine Laboratory (a campus of Walla Walla University) Fidalgo Island, Anacortes, WA.
- Global Biodiversity Information Facility. Accessed February 29, 2008. http://www.gbif.org Mediated distribution data from provider.
- Ocean Biogeographic Information System. Accessed February 26, 2006. www.iobis.org
Data Sources
Accessed through GBIF Data Portal February 29, 2008:
- Institute of Marine and Coastal Sciences, Rutgers University: Gwaii Haanas Invertebrates (OBIS Canada)
- Institute of Marine and Coastal Sciences, Rutgers University: NBI
Identifiers
- Biodiversity Heritage Library NamebankID: 2707985
- Catalogue of Life Accepted Name Code: ITS-99036
- Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 99036
- Natural Heritage Network Species Identifier: ICMAL32010
- Zipcode Zoo Species Identifier: 165270
Footnotes
- Cowles, Dave. Key to Invertebrates Found At or Near The Rosario Beach Marine Laboratory (a campus of Walla Walla University) Fidalgo Island, Anacortes, WA May 2009. [back]
- Standard Deviation = 576.400 based on 90 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]
