| 词条 | Pachygrapsus marmoratus |
| 释义 |
| name = Pachygrapsus marmoratus | image = Pachygrapsus marmoratus 2009 G4.jpg | regnum = Animalia | phylum = Arthropoda | subphylum = Crustacea | classis = Malacostraca | ordo = Decapoda | infraordo = Brachyura | familia = Grapsidae | genus = Pachygrapsus | species = P. marmoratus | binomial = Pachygrapsus marmoratus | binomial_authority = (Fabricius, 1787) [1] | synonyms =
}} Pachygrapsus marmoratus is a species of crab, sometimes called the marbled rock crab or marbled crab, which lives in the Black Sea, the Mediterranean Sea and parts of the Atlantic Ocean. It is dark violet brown, with yellow marbling, and with a body up to {{convert|36|mm}} long. A semiterrestrial omnivore, it feeds on algae and various animals including mussels and limpets. DescriptionP. marmoratus has a square carapace {{convert|22|-|36|mm}} long, which is dark violet brown with marbling in yellow.[2] It can be distinguished from related species of Pachygrapsus in the Mediterranean Sea (Pachygrapsus maurus and Pachygrapsus transversus)[3] by the presence of three teeth on each side of the carapace.[2] It is capable of very rapid movements, and it uses this ability to dart into crevices, making it difficult to catch.[2]DistributionIt is widespread in Southern Europe,[4] from the Black Sea to the Moroccan coast, and along the Atlantic coasts of Portugal, Spain and France,[5] and was observed as early as 1996 as far north as Southampton in the English Channel.[5] This range expansion may be due to the warming of the surface waters.[6] EcologyP. marmoratus is an omnivore, but not an opportunist; similar proportions of algae and animals are consumed however abundant they are in the habitat. The favoured animals in the diet of P. marmoratus are mussels, limpets and its own species.[4] When attacking the limpet Patella depressa, Pachygrapsus marmoratus uses a consistent method, which is usually unsuccessful.[7] On more sheltered shores, P. grapsus eats fewer mussels, but compensates with a greater consumption of barnacles.[8]Predators of Pachygrapsus marmoratus include the musky octopus, Eledone moschata.[9]The larvae of P. marmoratus are planktonic and may survive for up to 31 days. This results in high levels of gene flow between populations, and allows the species to rapidly colonise new areas.[10] References1. ^{{cite journal |journal=Raffles Bulletin of Zoology |year=2008 |volume=17 |pages=1–286 |title=Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world |author=Peter K. L. Ng, Danièle Guinot & Peter J. F. Davie |url=http://rmbr.nus.edu.sg/rbz/biblio/s17/s17rbz.pdf |format=PDF}} 2. ^1 2 {{cite web |url=http://www.marlin.ac.uk/speciesinformation.php?speciesID=4005 |author=Rose Edwards |year=2005 |title=Pachygrapsus marmoratus: a marbled rock crab |work=Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme |publisher=Marine Biological Association of the United Kingdom |accessdate=January 11, 2010}} 3. ^{{cite journal |title=First record of Pachygrapsus transversus (Gibbes, 1850) (Brachyura, Grapsidae) in Italian waters |author1=A. M. Vaccaro |author2=C. Pipitone |lastauthoramp=yes |year=2005 |journal=Crustaceana |volume=78 |issue=6 |pages=677–683|url=http://decapoda.nhm.org/pdfs/28064/28064.pdf |doi=10.1163/156854005774353511}} 4. ^1 {{cite journal |title=Feeding habits and natural diet of the intertidal crab Pachygrapsus marmoratus: Opportunistic browser or selective feeder? |author1=S. Cannicci |author2=M. Gomei |author3=B. Boddi |author4=M. Vannini |journal=Estuarine, Coastal and Shelf Science |year=2002 |volume=54 |issue=6 |pages=983–1001 |doi= 10.1006/ecss.2001.0869}} 5. ^1 {{cite journal |title=First reported occurrences of the marbled crab, Pachygrapsus marmoratus (Crustacea: Brachyura: Grapsoidea) in southern coastal waters of the British Isles |author1=Ray W. Ingle |author2=Paul F. Clark |lastauthoramp=yes |url=http://www.mba.ac.uk/jmba/pdf/5245.pdf |journal=JMBA2 Biodiversity Records |year=2006 |deadurl=yes |archiveurl=https://web.archive.org/web/20110721044422/http://www.mba.ac.uk/jmba/pdf/5245.pdf |archivedate=2011-07-21 |df= }} 6. ^{{cite journal |title=New record of the marbled crab Pachygrapsus marmoratus (Crustacea: Brachyura: Grapsoidea) on the coast of northern Cotentin, Normandy, western English Channel |author=Jean-Claude Dauvin |journal=Marine Biodiversity Records |year=2009 |volume=2 |pages=e92 |doi=10.1017/S1755267209001109}} 7. ^{{cite journal |journal=Journal of the Marine Biological Association of the United Kingdom |year=2004 |volume=84 |issue=2 |pages=367–370 |doi=10.1017/S0025315404009294h |title=Rare predation by the intertidal crab Pachygrapsus marmoratus on the limpet Patella depressa |author1=Ana Silva |author2=Diana Boaventura |author3=Augusto Flores |author4=Pedro Ré |author5=Stephen J. Hawkins }} 8. ^{{cite journal |journal=Marine Biology |volume=156 |issue=12 |year=2009 |doi=10.1007/s00227-009-1283-1 |pages=2591–2599 |title=Abundance, population structure and claw morphology of the semi-terrestrial crab Pachygrapsus marmoratus (Fabricius, 1787) on shores of differing wave exposure |author1=Ana Catarina Ferreira Silva |author2=Sónia Brazão |author3=Steve J. Hawkins |author4=Richard C. Thompson |author5=Diana M. Boaventura }} 9. ^{{cite journal |journal=International Journal of Natural and Engineering Sciences |volume=1 |issue=2 |pages=29–31 |year=2007 |title=Food preference of Eledone moschata Lamarck, 1799 (Cephalopoda: Octopodidae) in captive conditions |author=Halil Şen |url=http://www.nobelonline.net/UserFiles/File/4hsen.pdf |format=PDF }}{{dead link|date=March 2018 |bot=InternetArchiveBot |fix-attempted=yes }} 10. ^{{cite journal |journal=Journal of Experimental Marine Biology and Ecology |volume=378 |issue=1–2 |year=2009 |pages=50–57 |doi=10.1016/j.jembe.2009.07.032 |title=Genetic patchiness of the shore crab Pachygrapsus marmoratus along the Portuguese coast |author1=Inês C. Silva |author2=Natacha Mesquita |author3=Christoph D. Schubart |author4=Maria Judite Alves |author5=José Paula }} External links{{Portal|Crustaceans}}
5 : Grapsoidea|Crustaceans of the Atlantic Ocean|Crustaceans described in 1787|Taxa named by Johan Christian Fabricius|Articles containing video clips |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。