{"refrec":{"BRefID":222509,"RR":"<b>Jefferson, T.A.; Van Waerebeek, K.</b> (2004). Geographic variation in skull morphology of humpback dolphins (<i>Sousa</i> spp.). <i>Aquat. Mamm. 30(1)</i>: 3-17. <a href=\"http://dx.doi.org/10.1578/AM.30.1.2004.3\" target=\"_blank\">http://dx.doi.org/10.1578/AM.30.1.2004.3</a>","BEntID":214235,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Mamm. 30(1)</i>: 3-17. <a href=\"http://dx.doi.org/10.1578/AM.30.1.2004.3\" target=\"_blank\">http://dx.doi.org/10.1578/AM.30.1.2004.3</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Jefferson, T.A.; Van Waerebeek, K.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Jefferson, T.A.; Van Waerebeek, K.","Englishabstract":"The taxonomy and systematic relationships of humpback dolphins (genus<i> Sousa</i>)  are highly confused. This is largely due to a lack of data and samples  from large portions of the range of the genus, and confusing and  seemingly contradictory patterns of variation in available external  morphometric, skeletal morphometric, and molecular datasets. To help  clarify the situation, we measured 222 skulls of humpback dolphins  originating from throughout most regions of the range of<i> Sousa</i>.  While patterns of cranial variation appeared to be relatively  conservative, there was evidence for three groups: (1) Atlantic  Ocean/West Africa, (2) Western Indian Ocean, and (3) Eastern Indian  Ocean/Pacific Ocean. These would appear to correspond to the<i> teuszii</i>,<i> plumbea</i>, and<i> chinensis </i> forms, respectively. No taxonomic revisions are recommended at this time, and the conservative view of two species (<i>S. teuszii</i> in West Africa and<i> S. chinensis</i> in the Indo-Pacific) can be defended for the time being as a pragmatic approach. The distinctness of<i> S. teuszii</i> is clearcut, but other taxonomic decisions should await further studies  of molecular genetics and morphometrics, currently underway.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Geographic variation in skull morphology of humpback dolphins (<i>Sousa</i> spp.)","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-23 01:32:18.207277","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"cranial morphology, geographic variation, humpback dolphin, morphometrics, skull, <i>Sousa chinensis, Sousa plumbea, Sousa teuszii</i>, systematics, taxonomy","OtherDescriptors":null,"Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2013-02-19","DateCreate":"2013-02-01","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":null,"VABBcode":null,"OpenAcc":0,"DOI":"10.1578/AM.30.1.2004.3"},"refs":null,"anarec":{"AnaID":222509,"PubliDate":2004,"Pagination":"3-17","XtraPublOfAnaID":null,"ISBN":null,"Volume":"30","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42200,"SerRR":"Aquatic Mammals. 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