Hemigrapsus nudus

• Overview
• Interesting Facts
• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Interesting Facts

Common Names

Description

Physical Description

Habitat

Under rocks and in cracks. Also high in some estuaries. Depth Range : Mostly intertidal. This species seems to be less tolerant of hypoxia than is H. oregonensis. In places where their range overlap it is usually found higher in the intertidal and on more sandy/less muddy substrate.[1]

Typically found in the intertidal zone at the water's edge at a mean distance from sea level of 84 meters (275 feet).[2]

Biome: Coastal.

Biology

Diet

In Puget Sound feeds on diatoms , desmids , and small Ulva and Enteromorpha green algae scraped from rocks with the tips of the chelae. May also feed on a few animal products, such as amphipods and the eggs of Nucella emarginata and other whelks. (Ref. 109953)

A related species, H. sanguineus (Asian shore crab) on the New England coast was shown to prefer animal prey such as small mussels and barnacles, even though it could also feed on algae. When starved or in crowded conditions it ate algae, but if given a free choice it chose invertebrates . The authors speculated that the species may have an important effect on competition and succession among intertidal attached species. [1]

Reproduction

In Puget Sound , females carrying eggs are found from January to mid-July; especially in April. Female may carry from 400 to 36,000 eggs. (Ref. 109953)

Behavior

Does not live in burrows, as Hemigrapsus oregonensis often does. The chela of males, as of H. oregonensis and P. crassipes, have a prominent tuft of hairlike setae on the palm. This species is an osmoregulator and can tolerate both hypo- and hyperosmotic conditions.[1]

Predators:

Predators include gulls white-winged scoters, Anthopleura anemones, and staghorn and tidepool sculpins . Nucella lamellosa seems to be attracted to the scent of this crab but is not known to be a predator. The eggs may be attacked by the tiny Nemertean worm Carcinonemertes epialti.[1]

Parasites:

This species sometimes has the pasasitic isopod Portunion conformis in the perivisceral cavity

Taxonomy

Synonyms

Brachynotus nudus • Heterograpsus nudus • Pseudograpsus nudus

Notes

Name Status: Accepted Name .

Last scrutiny: 02-Feb-2005

Similar Species

Hemigrapsus oregonensis also has 3 anterolateral teeth but no purple spots on the chelipeds and the legs have abundant setae. Pachygrapsus crassipes (Oregon and south) has transverse lines and 2 anterolateral teeth on the carapace. (Ref. 109953)

Members of the genus Hemigrapsus

ZipcodeZoo has pages for 3 species and subspecies in this genus:

H. nudus (Naked Shore Crab) · H. oregonensis (Green Shore Crab) · H. sanguineus (Asian Shore Crab)

More Info

• Search for Pictures: images.google.com
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• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• ... The grapsoid crabs of America, by Mary J. Rathbun. .. Washington, Govt. print. off., 1918. url , p. 267, p. 268, p. 270, p. 434, p. xx.
• Alaska / Harriman Alaska Expedition. New York: Doubleday, Page, 1901-1910. url p. 189, p. 333.
• Alaska. .. New York, Doubleday, Page & Company, 1901- url p. 189, p. 333.
• Alaska. New York, Doubleday, Page & company, 1901- url p. 189, p. 333.
• Animal hormones; a comparative survey. With a foreword by John E. Harris. Oxford, Pergamon Press, 1962-[70] url , p. 187, p. 264.
• Bulletin of the Southern California Academy of Sciences Los Angeles, Calif.: The Academy, 1971- url p. 40.
• California fish and game. [San Francisco, etc.]: State of California, Resources Agency, Dept. of Fish and Game. url p. 41, p. 99.
• Commercial fisheries review. [Washington]: National Marine Fisheries Service; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.] url p. 112.
• Comparative animal physiology, by David W. Bishop [and others] Philadelphia, Saunders, 1950. url p. 24.
• Culture methods for invertebrate animals; a compendium prepared cooperatively by American zoologists under the direction of a committee from Section F of the American Association for the Advancement of Science [by] Paul S. Galtsoff, Frank E. New York, Dover Publications[1959] url p. 238, p. 241.
• Current bibliography for aquatic sciences and fisheries. London, Taylor & Francis ltd. url p. 13, p. 376, p. 499, p. 596, p. 659, p. 686.
• Decapod crustaceans of the northwest coast of North America. .. New York, 1904. url p. 189.
• Elkhorn Slough Estuarine Sanctuary: proposed estuarine sanctuary grant award for Elkhorn Slough, Monterey County, California / Washington: U.S. Govt. Print. Off., 1979? url .
• Energy and environmental stress in aquatic systems: selected papers from a symposium held at Augusta, Georgia, November 2-4, 1977 / sponsored by Savannah River Ecology Laboratory, Institute of Ecology, University of Georgia, Assistant Secretary for Environment, U.S. Department of Energy, Savannah River National Environmental Resea [Washington]: Technical Information Center, U.S. Dept. of Energy; 1978. url p. 740, p. 744.
• Fishery bulletin / U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Marine Fisheries Service. Washington, D.C.: The Service: url p. 464.
• General embryological information service. Utrecht, Hubrecht Laboratory. url p. 170.
• Harriman Alaska series. City of Washington: Smithsonian Institution, 1910-1914. url p. 189, p. 333.
• Harriman Alaska series. vol. I-V, VIII-XIV Washington, D.C., Smithsonian Institution, 1910-14 url p. 189, p. 333.
• Impact of man on the coastal environment / technical editor, Thomas W. Duke. Washington, D.C.: Office of Research and Development, U.S. Environmental Protection Agency, 1982. url .
• Papers in marine biology and oceanography, dedicated to Henry Bryant Bigelow by his former students and associates on the occasion of the twenty-fifth anniversary of the founding of the Woods Hole Oceanographic Institution, 1955. London, Pergamon Press, 1955. url p. 291, p. 292, p. 293, p. 31.
• Photoperiodism and related phenomena in plants and animals; proceedings, edited by Robert B. Withrow, with the cooperation of Arthur C. Giese [and others]. Washington, 1959. url p. 880.
• Problems of relative growth, by Sir Julian S. Huxley...With 105 illustrations. New York, L. MacVeagh, The Dial Press, 1932. url p. 261.
• Proceedings of the California Academy of Sciences, 4th series. San Francisco, California Academy of Sciences. url p. 343, p. 526.
• Proceedings of the National Shellfisheries Association. Plymouth, Mass., Published for the National Shellfisheries Association by MPG Communications. url p. 10, p. 36, p. 6.
• Publications - Puget Sound Biological Station. [Seattle?]Puget Sound Biological Station, University of Washington. url p. 285, p. 353, p. 358, p. 359, p. 376, p. 396.
• Puget Sound Marine Station publications. Seattle?: Puget Sound Marine Station, University of Washington?, 1915-1917 url p. 285, p. 353, p. 358, p. 376, p. 396.
• Recent advances in invertebrate physiology; a symposium sponsored by the National Science Foundation, the Tektronix Foundation [and] the University of Oregon. Bradley T. Scheer, editor; Theodore H. Bullock, Lewis H. Kleinholz [and] Arthur W. Martin, associate editors. Eugene, University of Oregon Publications, 1957. url p. 216, p. 218, p. 223, p. 225, p. 226.
• 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. url p. 292, p. 304.
• Synopsis of the true crabs (Brachyura) of Monterey Bay, California / by Frank Walter Weymouth. [Palo Alto, Calif.]: Stanford University, 1910. url p. 10, p. 62, p. xiv.
• The Biological bulletin. Woods Hole, Mass.: Marine Biological Laboratory, url , , p. 150, p. 156, p. 157, p. 159, p. 160, p. 162, p. 163, p. 168, p. 169, p. 170, p. 212, p. 215, p. 216, p. 217, p. 218, p. 218, p. 220, p. 221, p. 222, p. 223, p. 224, p. 225, p. 225, p. 227, p. 229, p. 230, p. 232, p. 234, p. 234, p. 236, p. 236, p. 238, p. 238, p. 238, p. 239, p. 240, p. 244, p. 244, p. 245, p. 249, p. 255, p. 278, p. 301, p. 320, p. 361, p. 363, p. 364, p. 365, p. 365, p. 370, p. 38, p. 39, p. 398, p. 401, p. 41, p. 42, p. 422, p. 426, p. 43, p. 45, p. 450, p. 49, p. 514, p. 57, p. 58, p. 581, p. 581, p. 584, p. 584, p. 61, p. 87, p. 88.
• The Canadian field-naturalist. 42 1928 Ottawa, Ottawa Field-Naturalists' Club. url green , baker , p. 102, p. 108, p. 151, p. 159, p. 164, p. 165, p. 189, p. 222, p. 232, p. 233, p. 314, p. 88.
• The biology of marine animals. New York, Interscience Publishers[1960] url p. 671.
• The marine decapod Crustacea of California, with special reference to the decapod Crustacea collected by the United States Bureau of Fisheries steamer "Albatross" in connection with the biological survey of San Francisco bay during the years 19 Berkeley, University of California press, 1921. url p. 271, p. 273, p. 274, p. 283, p. 295, p. 297, p. 352, p. 452, p. 8.
• The sea-beach at ebb-tide: a guide to the study of the seaweeds and the lower animal life found between tidemarks / by Augusta Foote Arnold. New York: The Century Co., 1901. url , p. 281, p. 484.
• The sea-beach at ebb-tide; a guide to the study of the seaweeds and the lower animal life found between tidemarks. New York, The Century co., 1901. url , .
• University of California publications in zoology. Berkeley: University Press, 1906- url p. 271, p. 273, p. 274, p. 283, p. 297, p. 352, p. 8.
• University of Kansas publications, Museum of Natural History. 2 1948 Lawrence, University of Kansas. url p. 180.

Notes

Contributors

• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 15, 2012.
• Cowles, Dave. Key to Invertebrates Found At or Near The Rosario Beach Marine Laboratory (a campus of Walla Walla University) Fidalgo Island, Anacortes, WA.
• Dave Cowles
• Global Biodiversity Information Facility. Accessed March 05, 2008. http://www.gbif.org Mediated distribution data from 2 providers.
• Ruggiero M., Gordon D., Bailly N., Kirk P., Nicolson D. (2011). The Catalogue of Life Taxonomic Classification, Edition 2, Part A. In: Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist (Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D., eds). DVD; Species 2000: Reading, UK.

Data Sources

Accessed through GBIF Data Portal March 05, 2008:

• Institute of Marine and Coastal Sciences, Rutgers University: Atlantic Reference Centre (OBIS Canada)
• Institute of Marine and Coastal Sciences, Rutgers University: Gwaii Haanas Invertebrates (OBIS Canada)
• National Museum of Natural History: NMNH Invertebrate Zoology Collections

Identifiers

• Biodiversity Heritage Library NamebankID: 1
• Catalogue of Life Accepted Name Code: ITS-99035
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 99035
• Zipcode Zoo Species Identifier: 153463

Footnotes

1. 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]
2. Standard Deviation = 321.450 based on 91 observations. Terrestrial altitude and ocean depth information for each observation from British Oceanographic Data Centre. [back]

©2004-2012 David Stang. All rights reserved.