{"refrec":{"BRefID":101686,"RR":"<b>Antajan, E.; Gasparini, S.</b> (2004). Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution, <b><i>in</i></b>: Antajan, E. <i>Responses of calanoid copepods to changes in phytoplankton dominance in the diatoms - <i>Phaeocystis globosa</i> dominated Belgium coastal waters.</i> pp. 68-84","BEntID":306917,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":", <b><i>in</i></b>: Antajan, E. <i>Responses of calanoid copepods to changes in phytoplankton dominance in the diatoms - <i>Phaeocystis globosa</i> dominated Belgium coastal waters.</i> pp. 68-84","DocTypID":17,"DocType":"Book chapters","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Antajan, E.; Gasparini, S.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Antajan, E.; Gasparini, S.","Englishabstract":"The accessory pigment alloxanthin is a well-known taxonomic marker for Cryptophyceae in natural seawater. The use of alloxanthin to estimate in situ zooplankton grazing and selectivity on Cryptophyceae was studied using 2 dominant copepods of the southern North Sea, <i>Temora longicornis</i> and <i>Centropages hamatus</i>. High-performance liquid chromatography (HPLC) analyses of water samples and of freshly caught copepods, starvation experiments, and feeding experiments (shipboard bottle-incubations) were carried out. Although alloxanthin was always detected in copepod extracts, (1) no correlation was found with alloxanthin in seawater, and (2) no significant grazing on Cryptophyceae was observed. Results of our gut-evacuation experiments showed that at least 78% of the initial alloxanthin content of <i>T. longicornis</i> and <i>C. hamatus</i> remained after 90 min, whereas fucoxanthin and chloropigments decreased rapidly with time. Alloxanthin and astaxanthin esters were the only pigments remaining in the body of <i>T. longicornis</i> after several hours<sup>¹</sup> starvation. It is concluded that most of the detected alloxanthin did not originate from the gut but from the body tissues. Our results suggest that alloxanthin is not suitable as a biomarker for quantitative or qualitative estimates of copepod grazing on Cryptophyceae.","AbstractOtherLang":null,"BibLvlCode":"AM","StandardTitle":"Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution","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":"alloxanthin; cryptophyceae; copepod ingestion; HPLC","OtherDescriptors":null,"Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2019-08-28","DateCreate":"2006-08-24","SecASFANote":null,"ConfID":null,"PeerRev":0,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":101686,"PubliDate":2004,"Pagination":"68-84","XtraPublOfAnaID":null,"ISBN":null,"Volume":null,"Issue":null,"BRefMon":101679,"BRefMonRR":"<B>Antajan, E.</B> (2004). Responses of calanoid copepods to changes in phytoplankton dominance in the diatoms - <i>Phaeocystis globosa</i> dominated Belgium coastal waters. PhD Thesis. Vrije Universiteit Brussel. Laboratorium voor Ecologie en Systematiek: Brussel. 147 pp.","BRefXtra":null,"BRefXtraRR":null,"SerBRefID":null,"SerRR":null,"StandardTitleSer":null,"ISSN":null,"AbbrevSer":null,"StandardTitleMon":"Responses of calanoid copepods to changes in phytoplankton dominance in the diatoms - <i>Phaeocystis globosa</i> dominated Belgium coastal waters","StartPage":68,"Pages":17,"ToPubliDate":null,"BRefBibLvlCode":"M","SerNotes":null,"AutString":"Antajan, E."},"monrec":null,"serrec":null,"relations":null,"relationsRev":[{"XBRefID":61256,"RefStrFull":"<b>Antajan, E.; Gasparini, S.</b> (2004). Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution. <i>Mar. Ecol. Prog. Ser. 274</i>: 191-198. <a href=\"https://dx.doi.org/10.3354/meps274191\" target=\"_blank\">https://dx.doi.org/10.3354/meps274191</a>","RelID":4,"RelationY":"Related to","StandardTitle":"Assessment of Cryptophyceae ingestion by copepods using alloxanthin pigment: a caution"}],"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Antajan","Firstname":"Elvire","Initials":"E.","Affiliation":"Laboratorium voor Ecologie en Systematiek, Vrij Universiteit Brussel","Discriminator":null,"CorporateFlag":0,"BEntID":306917,"AutID":143900,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":"ECOL","InsFSN":"Vrije Universiteit Brussel; Faculteit Wetenschappen; Vakgroep Biologie; Laboratorium voor Ecologie en Systematiek","ORCID":null,"PersID":3683,"InsID":33},{"AutName":"Gasparini","Firstname":"Stéphane","Initials":"S.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":306917,"AutID":34332,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":8308,"InsID":null}],"mapdetails":null,"datasets":null,"monographs":null,"monparts":null,"serparts":null,"BEntOpen":null,"BEntPrivate":null,"availability":[{"BInstID":102046,"LibID":36,"BRefID":101686,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":0,"hasOCRd":null,"ShelfLocCode":null,"RFID":null,"PaidValue":null,"Medium":"Paper","Description":null,"Acronym":"VLIZ","Library":"Vlaams Instituut voor de Zee","DutchTerm":null,"URL":null,"ClassifID":null,"Classification":null,"ReqLink":null,"ClassifTypID":null,"URLLocation":null,"SubDir":null,"InternalReq":null,"LoggedInReq":null,"Disclaimer":null,"DutchDisclaimer":null,"FileFormat":null,"FileDescr":null,"InsPub":1,"InsID":36,"FileFormID":null,"LendableFlag":0,"PublicFlag":1,"orderLib":"A","Notes":null,"AccConID":null,"AccessConstraint":null,"LicURL":null}],"litstyles":null,"thespers":null,"arch2discl":null,"SERpubls":null,"MONpubls":[{"PublName":"Vrije Universiteit Brussel. 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