{"refrec":{"BRefID":204842,"RR":"<b>Boyden, C.R.</b> (1971). A comparative study of the reproductive cycles of the cockles <i>Cerastoderma edule</i> and <i>C. glaucum</i>. <i>J. Mar. Biol. Ass. U.K. 51(3)</i>: 605-622","BEntID":197003,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>J. Mar. Biol. Ass. U.K. 51(3)</i>: 605-622","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":1,"TerrestrialFlag":0,"Authorstring":"Boyden, C.R.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Boyden, C.R.","Englishabstract":"The reproductive cycles of the two cockles Cerastoderma edule (L.) and C.glaucum (Poiret) (= Cardium lamarcki Reeve) from a mixed population in the Crouch estuary, Essex, have been investigated. Reproductive maturity was estimated by assessment of gonad condition. A difference in maturity related to shore level was noted. The reproductive cycles of the two cockles were found to be essentially similar. Rapid gametogenesis occurred in both cockles in spring, C. edule then spawned in May, whereas C. glaucum did not spawn until July. The difference in time of spawning appears to be responsible for the maintenance of the two genotypes in a sympatric association, as hybridization experiments showed an absence of isolation at the gamete level. The relationship between C. edule and C. glaucum is discussed.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"A comparative study of the reproductive cycles of the cockles <i>Cerastoderma edule</i> and <i>C. glaucum</i>","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:01.897972","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1971,"MonPub":null,"DateUpdate":"2011-05-10","DateCreate":"2011-05-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":204842,"PubliDate":1971,"Pagination":"605-622","XtraPublOfAnaID":null,"ISBN":null,"Volume":"51","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43277,"SerRR":"Journal of the Marine Biological Association of the United Kingdom. Cambridge University Press/Marine Biological Association of the United Kingdom: Cambridge.  ISSN 0025-3154; e-ISSN 1469-7769","StandardTitleSer":"Journal of the Marine Biological Association of the United Kingdom","ISSN":"0025-3154","AbbrevSer":"J. Mar. Biol. Ass. U.K.","StandardTitleMon":null,"StartPage":605,"Pages":18,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Boyden","Firstname":null,"Initials":"C.R.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":197003,"AutID":20420,"OrderNr":1,"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":[{"BInstID":222106,"LibID":36,"BRefID":204842,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":1,"ShelfLocCode":"222106","RFID":null,"PaidValue":null,"Medium":"Server","Description":"Interne VLIZ documenten","Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":"Non-open access","URL":null,"ClassifID":228,"Classification":"Non-open access","ReqLink":1,"ClassifTypID":3,"URLLocation":"https://www.vliz.be/imisdocs/publications/","SubDir":1,"InternalReq":1,"LoggedInReq":1,"Disclaimer":"Disclaimer_VLIZ_Intern","DutchDisclaimer":"<p>Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site <br />en mag op geen enkele manier verder worden verspreid.</p>","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":[{"PublName":"Cambridge University Press","City":"Cambridge"},{"PublName":"Marine Biological Association of the United Kingdom","City":"Cambridge"}],"MONpubls":null,"pictures":[],"thestermsPath":[{"ThesaurusTerm":"Reproductive cycle","ThestID":6883,"Acronym":"ASFA","ThesTermPath":"Reproductive cycle"}],"thestermsASFA":[{"ThesaurusTerm":"Reproductive cycle"}],"taxtermsASFA":[{"TaxTerm":"Cerastoderma edule (Linnaeus, 1758)"},{"TaxTerm":"Cerastoderma glaucum (Poiret, 1789)"}],"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":197003,"AbstractFlag":0,"LangID":15,"LangCode":"en","Lang":"English","DutchTerm":"Engels","LangCodeExtended":"eng"}],"urls":null,"thesterms":[{"ThesaurusTerm":"Reproductive cycle","ThestID":6883,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxterms":[{"TaxTerm":"Cerastoderma edule (Linnaeus, 1758) [Common cockle]","AphiaID":138998,"TaxtID":18499},{"TaxTerm":"Cerastoderma glaucum (Poiret, 1789) [Lagoon cockle]","AphiaID":138999,"TaxtID":29841}],"geoterms":null,"othterms":null,"asfacodes":null,"asfa2codes":null,"thestermsFRIS":[{"ThesaurusTerm":"Reproductive cycle","DutchTerm":"Reproductieve cycli","ThestID":6883,"Acronym":"ASFA","ThesTypID":1,"ThesType":"ASFA Thesaurus List"}],"taxtermsFRIS":[{"TaxTerm":"Cerastoderma edule (Linnaeus, 1758)","DutchTerm":"Gewone Kokkel","AphiaID":138998,"TaxtID":18499},{"TaxTerm":"Cerastoderma glaucum (Poiret, 1789)","DutchTerm":"Brakwaterkokkel","AphiaID":138999,"TaxtID":29841}],"geotermsFRIS":null,"othtermsFRIS":null,"resmessage":"","complete":1,"sessions":{"newSesName":"Haspeslagh, Jan, J.","newSesDate":{"date":"2011-05-10 13:52:55.580000","timezone_type":3,"timezone":"Europe/Brussels"},"updSesName":"Haspeslagh, Jan, J.","updSesDate":{"date":"2011-05-10 13:52:55.580000","timezone_type":3,"timezone":"Europe/Brussels"}}}