{"refrec":{"BRefID":18733,"RR":"<b>d'Udekem d'Acoz, C.</b> (1991). Considérations générales sur <i>Liocarcinus vernalis</i> (Risso, 1827) et remarques sur sa présence en Mer du Nord (Crustacea, Decapoda, Brachyura, Portunidae), <b><i>in</i></b>: <i>De Strandvlo 11(4). De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België,</i> 11(4): pp. 84-100","BEntID":18733,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: <i>De Strandvlo 11(4). De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België,</i> 11(4): pp. 84-100","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"d'Udekem d'Acoz, C.","OrigTitleTranslFlag":1,"Authorstringtrunc":"d'Udekem d'Acoz, C.","Englishabstract":"The Grey Swimming Crab <i>Liocarcinus vernalis</i> has been recorded since 1989 in the Southern North Sea where it may be locally quite common. It is not known if its occurrence in this sea is temporary or not but the population survived after the rather severe winter 1990-1991. lts geographical distribution and ecology are discussed and compared with other species. The three <i>Liocarcinus</i> of the holsatusgroup may be distinguished as follows: 1. Two tubercles (sometimes very faint) on the external margin of chelipeds carpus. Pereiopods II-IV slender (Mainly the propodus)................... 2-External margin of chelipeds carpus regularly rounded and without any trace of tubercles. Pereiopods II-IV robust (mainly the propodus). Carapace narrow. Crabs usually with a rough and very contrasted marbled pattern: <i>Liocarcinus marmoreus</i> (LEACH, 1814). 2. Fifth pereiopods merus very short (1.4-1.6 longer than wide). Median frontal tooth always overreaching the levelof the two submedian teeth (usually strong- ly). Carapace usually smooth or with few granules. Carapace often plain pale brown or plain blueish grey. Often larger than 39 mm accross: <i>Liocarcinus holsatus</i> ( F A8RICIUS , 1798 )-Fifth pereiopods merus long (2.0-2.5 longer than wide). Median frontal tooth usually not overreaching the level of the two submedian teeth. Carapace usu- ally (but not always !) with many faint granules. Carapace usually grey or greyish and minutely speckled. Very seldom larger than 39 mm accross: <i>Liocarcinus vernalis</i> (RISSO, 1816)","AbstractOtherLang":"Sinds 1989 is de Grijze Zwemkrab <i>Liocarcinus vernalis</i> in de Zuidelijke Noordzee waargenomen. In België komt ze plaatselijk zelfs algemeen voor. De soort werd herhaaldelijk te Oostduinkerke aangetroffen in de netten van kruiers. Waarschijnlijk wordt ze tijdens de herfstperiode het talrijkst gevangen. Het is mij niet bekend of het voorkomen van de Grijze Zwemkrab in de Zuidelijke Noordzee een normaal fenomeen is, of dat haar optreden er slechts zeer uitzonderlijk is. Opmerkelijk is dat de populatie de tamelijk koude winter van 1990-'91 overleefd heeft. De soort lijkt ook strengere ecologische eisen te stellen dan <i>Liocarcinus holsatus</i>. Ze geeft de voorkeur aan een slibvrije tot licht slibhoudende zandbodem. De drie <i>Liocarcinus</i>-soorten uit de holsatus-groep onderscheiden zich als volgt:1. Buitenrand van de carpus van de schaarpoten met twee knobbels (soms slechts zeer zwak aanwezig). Tweede, derde en vierde looppoot (pereiopoden) dun (vooral de propodus)............................................ 2-Buitenrand van de carpus van de schaarpoten regelmatig afgerond en geheel zonder knobbels. Tweede, derde en vierde looppoot stevig (vooral de propo- dus). Rugschild weinig verbreed. Krab gewoonlijk met een zeer geschakeerd grof gemarmerd kleurpatroon <i>Liocarcinus marmoreus</i> (LEACH, 1814) Gemarmerde Zwemkrab (spoelt zelden aan op het strand).2. Zwempoten met een zeer korte merus (1,4-1,6 maal langer dan breed). De middelste tand op de voorrand van de carapax is steeds (meestal duidelijk) lan- ger dan de twee zijdelingse tanden. Rugschild doorgaans glad of een weinigkorrelig. Meestal bleek bruin of blauwachtig grijs van kleur. Het kleurpatroon is doorgaans effen; soms evenwel licht gemarmerd of licht gespikkeld. Wordt dikwijls breder dan 39 mm <i>Liocarcinus holsatus</i> (FABRICIUS, 1798) Gewone Zwemkrab.-Zwempoten met een lange, dunne merus (2,0-2,5 maal langer dan breed). De middelste tand op de voorrand van de carapax wordt zelden langer dan de twee zijdelingse. Rugschild vaak (maar niet altijd) duidelijk korrelig. Kleur grijs of grijsachtig met een duidelijk patroon van spikkels. Bereikt zeer zelden een breedte van 39 mm <i>Liocarcinus vernalis</i> (RISSO, 1816) Grijze Zwemkrab.","BibLvlCode":"AMS","StandardTitle":"Considérations générales sur <i>Liocarcinus vernalis</i> (Risso, 1827) et remarques sur sa présence en Mer du Nord (Crustacea, Decapoda, Brachyura, Portunidae)","OrigTitleLangCode":"fr","OrigTitleLangCodeExtended":"fre","OrigTitleLangID":22,"DateLastModified":{"date":"2025-08-01 01:33:50.237514","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1991,"MonPub":null,"DateUpdate":"2025-07-25","DateCreate":"2001-09-28","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":1},"refs":null,"anarec":{"AnaID":18733,"PubliDate":1991,"Pagination":"84-100","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"4","BRefMon":203008,"BRefMonRR":"(1991). De Strandvlo 11(4). <i>De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België</i>. De Strandwerkgroep België: Oostende. 81-109 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44637,"SerRR":"De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België. De Strandwerkgroep België: Ursel.  ISSN 0773-3542","StandardTitleSer":"De Strandvlo: Driemaandelijks Tijdschrift van De Strandwerkgroep België","ISSN":"0773-3542","AbbrevSer":"De Strandvlo","StandardTitleMon":"De Strandvlo 11(4)","StartPage":84,"Pages":17,"ToPubliDate":null,"BRefBibLvlCode":"MS","SerNotes":"Open access voor alle artikels ouder dan 5 jaar \r\n(mail van Tom Ameye dd. 6/09/2019)\r\nVLIZ: Fysiek en digitaal bewaren"},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":{"Line1":"Avenue du Bois des Collines 34","Email":null,"Line2":null,"EnvName":"Belgium"},"othpubs":null,"ownerships":null,"authors":[{"AutName":"d'Udekem d'Acoz","Firstname":"Cédric","Initials":"C.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":18733,"AutID":1884,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":"0000-0002-7893-305X","PersID":11084,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":219747,"LibID":36,"BRefID":18733,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"219747","RFID":null,"PaidValue":null,"Medium":"Server","Description":"VLIZ Open Access","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Open access","URL":null,"ClassifID":53,"Classification":"Open access","ReqLink":null,"ClassifTypID":1,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":null,"InternalReq":0,"LoggedInReq":0,"Disclaimer":null,"DutchDisclaimer":null,"FileFormat":".pdf","FileDescr":"pdf","InsPub":1,"InsID":36,"FileFormID":6,"LendableFlag":1,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":[{"PublName":"De Strandwerkgroep België","Place":"Oostende"}],"pictures":[],"thestermsPath":[{"ThesaurusTerm":"ANE, North Sea","ThestID":182108,"Acronym":"ASFA_GEOT","ThesTermPath":"ANE, North Sea"},{"ThesaurusTerm":"Distribution records","ThestID":2393,"Acronym":"ASFA","ThesTermPath":"Distribution records"}],"thestermsASFA":[{"ThesaurusTerm":"ANE, North Sea"},{"ThesaurusTerm":"Distribution records"}],"taxtermsASFA":[{"TaxTerm":"Liocarcinus vernalis (Risso, 1827)"}],"geotermsASFA":[{"GeoTerm":"North Sea"}],"collections":[{"Collection":"OMA - Open Marien Archief","ShortName":"OMA"}],"conf":null,"proj":null,"Physdatasets":null,"spcols":{"222":{"SpName":"BMB - Belgische Mariene Bibliografie","SpColID":222,"ParSpColID":null,"TopParID":null,"ShortName":"BMB","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"BMB"},"221":{"SpName":"OMA - Open Marien Archief","SpColID":221,"ParSpColID":null,"TopParID":null,"ShortName":"OMA","URLLocation":null,"LibID":36,"OpenRepoFlag":1,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"OMA"},"104":{"SpName":"Strandvlo","SpColID":104,"ParSpColID":null,"TopParID":null,"ShortName":"strandvlo","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"strandvlo"},"507":{"SpName":"World Register of Marine Species","SpColID":507,"ParSpColID":null,"TopParID":null,"ShortName":"WoRMS website","URLLocation":null,"LibID":null,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"WoRMS website"}},"doi":null,"publs":null,"serparttypes":null,"monauthors":null,"MParts":null,"SParts":null,"hLibs":null,"langs":[{"BEntID":18733,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":18733,"AbstractFlag":0,"LangID":22,"LangCode":"fr","Lang":"French","DutchTerm":"Frans","LangCodeExtended":"fre"},{"BEntID":18733,"AbstractFlag":0,"LangID":41,"LangCode":"nl","Lang":"Dutch","DutchTerm":"Nederlands","LangCodeExtended":"dut"},{"BEntID":18733,"AbstractFlag":1,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"},{"BEntID":18733,"AbstractFlag":1,"LangID":41,"LangCode":"nl","Lang":"Dutch","DutchTerm":"Nederlands","LangCodeExtended":"dut"}],"urls":null,"thesterms":[{"ThesaurusTerm":"ANE, North Sea","ThestID":182108,"Acronym":"ASFA_GEOT","ThesTypID":34,"ThesType":"ASFA Geoterms"},{"ThesaurusTerm":"Distribution records","ThestID":2393,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxterms":[{"TaxTerm":"Liocarcinus vernalis (Risso, 1827)","AphiaID":107394,"TaxtID":13575}],"geoterms":[{"GeoTerm":"North Sea","GeoObjectID":2350,"GeotID":390}],"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":[{"ThesaurusTerm":"ANE, North Sea","DutchTerm":null,"ThestID":182108,"Acronym":"ASFA_GEOT","ThesTypID":34,"ThesType":"ASFA Geoterms"},{"ThesaurusTerm":"Distribution records","DutchTerm":"Verspreidingsrecords","ThestID":2393,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxtermsFRIS":[{"TaxTerm":"Liocarcinus vernalis (Risso, 1827)","DutchTerm":"grijze zwemkrab","AphiaID":107394,"TaxtID":13575}],"geotermsFRIS":[{"GeoTerm":"North Sea","DutchTerm":"Noordzee"}],"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Milh, Dominique, D.","newSesDate":{"date":"2001-09-28 08:28:58.550000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Lyssens, Liesbeth, L.","updSesDate":{"date":"2025-07-25 14:41:44.537000","timezone_type":3,"timezone":"Europe/Brussels"}}}