{"refrec":{"BRefID":36393,"RR":"<b>Jensen, G.C.; McDonald, P.S.; Armstrong, D.A.</b> (2002). East meets west: competitive interactions between green crab Carcinus maenas, and native and introduced shore crab<i>Hemigrapsus</i> spp. <i>Mar. Ecol. Prog. Ser. 225</i>: 251-262","BEntID":36393,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":" <i>Mar. Ecol. Prog. Ser. 225</i>: 251-262","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jensen, G.C.; McDonald, P.S.; Armstrong, D.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jensen, G.C.; McDonald, P.S.; Armstrong, D.A.","Englishabstract":"The recent introduction of the European green crab <i>Carcinus maenas</i> and Asian shore crab <i>Hemigrapsus sanguineus</i> to the west and east coasts of North America, respectively, presents a unique opportunity for investigation into competitive dynamics among intertidal crabs. Juvenile <i>C. maenas</i> utilize rocks, shell, and other cover, and their arrival on the west coast places them in potential competition for these resources with an abundant native grapsid, <i>H. oregonensis</i>. Similarly, <i>H. sanguineus</i> use intertidal shelter on the east coast, thus placing <i>C. maenas</i> in possible competition with grapsids both as an invader on the west coast and as ‘resident’ on the east coast, having been established there for more than 150 yr. Field sampling and laboratory experiments testing competition for space between <i>C. maenas</i> and <i>Hemigrapsus</i> spp. of equal carapace width were conducted on both coasts, as were videotaped feeding trials to examine and quantify agonistic interactions between species. When competing for food (a single damaged, anchored bivalve), <i>C. maenas</i> dominated over <i>H. oregonensis</i>, while <i>H. sanguineus</i> were overwhelmingly dominant over <i>C. maenas</i>. Within-quadrat, stratified sampling of rocks and sand revealed striking differences in habitat utilization by <i>C. maenas</i> living in the presence or absence of <i>Hemigrapsus</i>. Only ~20% of juvenile <i>C. maenas</i> occurred under rocks in areas occupied by either <i>Hemigrapsus</i> species, while north of the present distribution of <i>H. sanguineus</i> (in Maine) >97% of the <i>C. maenas</i> were found beneath rocks. This pattern was reflected in laboratory trials as well, where both species of <i>Hemigrapsus</i> consistently dominated in contests for shelter. Given the importance of intertidal cover for small crabs, such competitive interactions will likely affect patterns of habitat use by <i>C. maenas</i> on the east coast and may have important implications for the ultimate distribution and impact of this species in the northeastern Pacific.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"East meets west: competitive interactions between green crab Carcinus maenas, and native and introduced shore crab<i>Hemigrapsus</i> spp.","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2002,"MonPub":null,"DateUpdate":"2003-07-16","DateCreate":"2003-07-16","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":36393,"PubliDate":2002,"Pagination":"251-262","XtraPublOfAnaID":null,"ISBN":null,"Volume":"225","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43354,"SerRR":"Marine Ecology Progress Series. Inter-Research: Oldendorf/Luhe.  ISSN 0171-8630; e-ISSN 1616-1599","StandardTitleSer":"Marine Ecology Progress Series","ISSN":"0171-8630","AbbrevSer":"Mar. Ecol. Prog. Ser.","StandardTitleMon":null,"StartPage":251,"Pages":12,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Jensen","Firstname":"Gregory","Initials":"G.C.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":36393,"AutID":38543,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"McDonald","Firstname":"P. Sean","Initials":"P.S.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":36393,"AutID":38544,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Armstrong","Firstname":null,"Initials":"D.A.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":36393,"AutID":24353,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":null,"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":[{"PublName":"Inter-Research","City":"Oldendorf/Luhe"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":null,"geotermsASFA":null,"collections":null,"conf":null,"proj":null,"Physdatasets":null,"spcols":null,"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":36393,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":null,"thesterms":null,"taxterms":null,"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":null,"taxtermsFRIS":null,"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Milh, Dominique, D.","newSesDate":{"date":"2003-07-16 09:45:58.610000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Milh, Dominique, D.","updSesDate":{"date":"2003-07-16 09:45:58.610000","timezone_type":3,"timezone":"Europe/Brussels"}}}