{"refrec":{"BRefID":352066,"RR":"Mattos, S.M.G.; Broadhurst, M.; Hazin, F.H.V.; Jonnes, D.M. (2001). Reproductive biology of the Caribbean sharpnose shark, Rhizoprionodon porosus, from northern Brazil. Mar. Freshw. Res. 52(5): 745. https://dx.doi.org/10.1071/mf00113","BEntID":349773,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":0,"RefStringPartII":". Mar. Freshw. Res. 52(5): 745. https://dx.doi.org/10.1071/mf00113","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Mattos, S.M.G.; Broadhurst, M.; Hazin, F.H.V.; Jonnes, D.M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Mattos, S.M.G. et al.","Englishabstract":"sharks,Rhizoprionodon porosus, were collected fromcatches of vessels fishing with gill-nets off the coast of northern Brazilbetween April 1996 and July 1997. The total sex ratio post partum was significantly biased towards females (1:1.57), but significantly more immature males than immature females were sampled (1.45:1), indicating sexual segregation. Females and males were categorized into reproductive stages according to changes in their reproductive tract. Size at sexual maturity for females was estimated to be ˜65 cm total length (TL), and males matured at between ˜65 and 70 cm TL. Gravid females had 1 to 8 embryos that approached a size at parturition of between ˜33 and 37 cm TL. The sex ratio of embryos was significantly biased towards females (1:1.79). Positive linear relationships were detected between TL of mature females and ovarian and uterine fecundities. Concurrent ovulation and gestation cycles and a clear relationship between embryonic development and maturation of the ovary showed that females are ready to copulate immediately after parturition. Reproduction occurs annually ,and although a peak in copulation was detected between late winter and early summer, many females appear capable of mating at any time throughout the year.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Reproductive biology of the Caribbean sharpnose shark, Rhizoprionodon porosus, from northern Brazil","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-05-18 01:33:38.159855","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"elasmobranch, ","OtherDescriptors":null,"Notes":null,"AnaPub":2001,"MonPub":null,"DateUpdate":"2022-10-06","DateCreate":"2022-05-19","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000171168400003","VABBcode":null,"OpenAcc":0,"DOI":"10.1071/mf00113"},"refs":null,"anarec":{"AnaID":352066,"PubliDate":2001,"Pagination":"745","XtraPublOfAnaID":null,"ISBN":null,"Volume":"52","Issue":"5","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":71721,"SerRR":"Marine and Freshwater Research. CSIRO: East Melbourne. ISSN 1323-1650; e-ISSN 1448-6059","StandardTitleSer":"Marine and Freshwater Research","ISSN":"1323-1650","AbbrevSer":"Mar. Freshw. Res.","StandardTitleMon":null,"StartPage":745,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Mattos","Firstname":"Sergio","Initials":"S.M.G.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":349773,"AutID":486541,"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":"Broadhurst","Firstname":"Matt","Initials":"M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":349773,"AutID":486542,"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":"Hazin","Firstname":"Fábio","Initials":"F.H.V.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":349773,"AutID":390163,"OrderNr":3,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":null,"ORCID":null,"PersID":null,"InsID":null},{"AutName":"Jonnes","Firstname":"Danillo","Initials":"D.M.","Affiliation":null,"Discriminator":null,"CorporateFlag":0,"BEntID":349773,"AutID":486544,"OrderNr":4,"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":377261,"LibID":36,"BRefID":352066,"EmbargoDate":null,"FullEmbargoDate":null,"PhysMedID":16,"hasOCRd":null,"ShelfLocCode":"377261","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":"
Deze publicatie is enkel beschikbaar voor persoonlijk gebruik binnen de Innovocean site en mag op geen enkele manier verder worden verspreid.