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Species Delimitation of Southeast Pacific Angel Sharks (<i>Squatina</i> spp.) Reveals Hidden Diversity through DNA Barcoding

dc.contributor.authorRosa M. Cañedo-Apolaya
dc.contributor.authorClara Ortiz-Alvarez
dc.contributor.authorEliana Alfaro-Cordova
dc.contributor.authorJoanna Alfaro-Shigueto
dc.contributor.authorXimena Velez-Zuazo
dc.contributor.authorJeffrey C. Mangel
dc.contributor.authorRaquel Siccha-Ramirez
dc.contributor.authorCarmen Yamashiro
dc.contributor.authorJorge L. Ramirez
dc.contributor.otherFacultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, 15081 Cercado de Lima, Peru
dc.contributor.otherProDelphinus, 15074 Lima, Peru
dc.contributor.otherProDelphinus, 15074 Lima, Peru
dc.contributor.otherProDelphinus, 15074 Lima, Peru
dc.contributor.otherCenter for Conservation and Sustainability, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC 20008, USA
dc.contributor.otherProDelphinus, 15074 Lima, Peru
dc.contributor.otherLaboratorio Costero de Tumbes, Instituto del Mar del Perú, 24540 Zorritos, Peru
dc.contributor.otherDirección General de Investigaciones de Recursos Demersales Y Litorales, Instituto del Mar del Perú, 07021 La Punta, Peru
dc.contributor.otherFacultad de Ciencias Biológicas, Universidad Nacional Mayor de San Marcos, 15081 Cercado de Lima, Peru
dc.date.accessioned2025-10-09T05:31:22Z
dc.date.available2025-10-09T05:31:22Z
dc.date.issued01-04-2021
dc.identifier.urihttps://www.mdpi.com/1424-2818/13/5/177
dc.identifier.urihttp://digilib.fisipol.ugm.ac.id/repo/handle/15717717/41121
dc.description.abstractAngel sharks are distributed worldwide in tropical to subtropical waters. Across the Eastern Pacific Ocean (EPO), two valid species are reported: The Pacific angelshark <i>Squatina californica</i> and the Chilean angelshark <i>Squatina armata</i>; however, there is still uncertainty about their geographic distribution, mainly along the northern Peru coast where the species have been reported to be sympatric. The aim of this study is to describe the genetic differences between the genus <i>Squatina</i> from the EPO, including samples from northern Peru, and using DNA barcoding and three species delimitation models: Poisson tree processes (PTP) model, Bayesian implementation of the PTP (bPTP) model and the general mixed Yule coalescent (GMYC) model. The three approaches summarized 19 nominal <i>Squatina</i> species in 23 consensus Molecular Taxonomic Units (MOTU). Only 16 of them were in accordance with taxonomic identifications. From the EPO, four <i>Squatina</i> MOTUs were identified, one from North America (<i>S. californica</i> USA/Mexico) and three sampled in northern Peru, <i>S. californica</i> Peru, <i>S. armata</i> and <i>Squatina</i> sp. (a potential new species). This study contributes to the management and conservation policies of angel sharks in Peru, suggesting the presence of an undescribed species inhabiting the northern Peruvian coast. The use of molecular approaches, such as DNA barcoding, has the potential to quickly flag undescribed species in poorly studied regions, including the Southeast Pacific, within groups of ecologically and economically important groups like angel sharks.
dc.language.isoEN
dc.publisherMDPI AG
dc.subject.lccBiology (General)
dc.titleSpecies Delimitation of Southeast Pacific Angel Sharks (<i>Squatina</i> spp.) Reveals Hidden Diversity through DNA Barcoding
dc.typeArticle
dc.description.keywordselasmobranchii
dc.description.keywordsHumboldt current
dc.description.keywordsEastern Pacific Ocean
dc.description.keywordsbiodiversity
dc.description.keywordsmtDNA
dc.description.doi10.3390/d13050177
dc.title.journalDiversity
dc.identifier.e-issn1424-2818
dc.identifier.oaioai:doaj.org/journal:d4c21b09937847c18d880f4050bf494f
dc.journal.infoVolume 13, Issue 5


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