{"refrec":{"BRefID":355169,"RR":"<b>Prusova, I.Y.; Galagovets, E.A.</b> (2022). Sex ratios of calanoid copepods in the northern Black Sea. <i>Regional Studies in Marine Science 55</i>: 102576. <a href=\"https://dx.doi.org/10.1016/j.rsma.2022.102576\" target=\"_blank\">https://dx.doi.org/10.1016/j.rsma.2022.102576</a>","BEntID":352882,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". <i>Regional Studies in Marine Science 55</i>: 102576. <a href=\"https://dx.doi.org/10.1016/j.rsma.2022.102576\" target=\"_blank\">https://dx.doi.org/10.1016/j.rsma.2022.102576</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":0,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Prusova, I.Y.; Galagovets, E.A.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Prusova, I.Y.; Galagovets, E.A.","Englishabstract":"The adult and juvenile sex ratios in field populations of the most common species of calanoid copepods <em>Acartia clausi</em> Giesbrecht, 1889, <em>Acartia tonsa</em> Dana, 1849, <em>Centropages ponticus</em> Karavaev, 1895, <em>Paracalanus parvus</em> (Claus, 1863), and <em>Pseudocalanus elongatus</em> (Brady, 1865) were studied on the basis of zooplankton materials collected in the Black Sea in 2011–2017. In all analyzed species, the adult sex ratios were female-biased, but to a different extent, which reflects the peculiarities of their morphology and ecology. The highest degree of female-skewed adult sex-ratios was observed in <em>P. parvus</em> and <em>P. elongatus</em>, species in which females have seminal receptacles, and males have atrophied mouth appendages. The closest to equity sex ratio was registered in <em>C. ponticus</em><span><span>, a species in which females lack seminal receptacles, and males have well-developed <a href=\"/topics/agricultural-and-biological-sciences/mouthparts\" title=\"Learn more about mouthparts from ScienceDirect's AI-generated Topic Pages\" class=\"topic-link\">mouthparts</a>. Thermophilic, present in </span><a href=\"/topics/earth-and-planetary-sciences/plankton\" title=\"Learn more about plankton from ScienceDirect's AI-generated Topic Pages\" class=\"topic-link\">plankton</a> only during the warm season, </span><em>A. tonsa</em> and <em>C. ponticus</em> demonstrated the highest average values of the proportion of males. Seasonal changes in adult sex ratios were registered only in <em>P. elongatus.</em> Juveniles of the fifth stage in <em>A. clausi, A. tonsa, C. ponticus</em>, and <em>P. elongatus</em> had average sex ratios close to 1:1 with a slight bias towards the prevalence of females. In copepodites of <em>P. parvus</em>, this bias was expressed to a much greater extent, which is possibly due to the counting method, when immature hermaphrodites were referred to as females. The microscope images of the mandibles of the analyzed species are given.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Sex ratios of calanoid copepods in the northern Black Sea","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":"Sex ratio, Calanoid copepods, Mandible, Seminal receptacle, Black Sea","OtherDescriptors":null,"Notes":null,"AnaPub":2022,"MonPub":null,"DateUpdate":"2022-08-30","DateCreate":"2022-08-29","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000874846600001","VABBcode":null,"OpenAcc":0,"DOI":"10.1016/j.rsma.2022.102576"},"refs":null,"anarec":{"AnaID":355169,"PubliDate":2022,"Pagination":"102576","XtraPublOfAnaID":null,"ISBN":null,"Volume":"55","Issue":null,"BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":259094,"SerRR":"Regional Studies in Marine Science. Elsevier: Amsterdam.  ISSN 2352-4855","StandardTitleSer":"Regional Studies in Marine Science","ISSN":"2352-4855","AbbrevSer":null,"StandardTitleMon":null,"StartPage":null,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Prusova","Firstname":"Irina Yu","Initials":"I.Y.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":352882,"AutID":501636,"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":"Galagovets","Firstname":"Ekaterina","Initials":"E.A.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":352882,"AutID":501637,"OrderNr":2,"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":381102,"LibID":36,"BRefID":355169,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"381102","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":"Elsevier","City":"Amsterdam"}],"MONpubls":null,"pictures":[],"thestermsPath":null,"thestermsASFA":null,"taxtermsASFA":[{"TaxTerm":"Calanoida"}],"geotermsASFA":null,"collections":[{"Collection":"VLIZ Acknowledged Publications","ShortName":"VLIZ ackn"}],"conf":null,"proj":null,"Physdatasets":null,"spcols":{"941":{"SpName":"LifeWatch Species Information Backbone","SpColID":941,"ParSpColID":39,"TopParID":39,"ShortName":"LifeWatch Species Information Backbone","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":39,"SpColPath":"VLIZ ackn/LifeWatch Species Information Backbone"},"39":{"SpName":"VLIZ Acknowledged Publications","SpColID":39,"ParSpColID":null,"TopParID":null,"ShortName":"VLIZ ackn","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":null,"SpColPath":"VLIZ ackn"},"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"},"915":{"SpName":"World Register of Marine Species (WoRMS) acknowledged","SpColID":915,"ParSpColID":941,"TopParID":39,"ShortName":"WoRMS ackn","URLLocation":null,"LibID":36,"OpenRepoFlag":null,"SpTypID":null,"TopParIDNotWebsite":39,"SpColPath":"VLIZ ackn/LifeWatch Species Information Backbone/WoRMS ackn"},"947":{"SpName":"WoRMS ackn - 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