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Molecular dating of caprines using ancient DNA sequences of Myotragus balearicus, an extinct endemic Balearic mammal

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dc.contributor.author Lalueza Fox, Carles, 1965-
dc.contributor.author Castresana Ruiz-Carrillo, José Ignacio
dc.contributor.author Sampietro Bergua, Mª Lourdes
dc.contributor.author Marquès i Bonet, Tomàs, 1975-
dc.contributor.author Alcover, Josep Antoni
dc.contributor.author Bertranpetit, Jaume, 1952-
dc.date.accessioned 2012-05-09T08:43:01Z
dc.date.available 2012-05-09T08:43:01Z
dc.date.issued 2005
dc.identifier.citation Lalueza-Fox C, Castresana J, Sampietro L, Marquès-Bonet T, Alcover JA, Bertranpetit J. Molecular dating of caprines using ancient DNA sequences of Myotragus balearicus, an extinct endemic Balearic mammal. BMC Evol. Biol. 2005; 5: 70. DOI: 10.1186/1471-2148-5-70
dc.identifier.issn 1471-2148
dc.identifier.uri http://hdl.handle.net/10230/16435
dc.description.abstract Background: Myotragus balearicus was an endemic bovid from the Balearic Islands (Western Mediterranean) that became extinct around 6,000-4,000 years ago. The Myotragus evolutionary lineage became isolated in the islands most probably at the end of the Messinian crisis, when the desiccation of the Mediterranean ended, in a geological date established at 5.35 Mya. Thus, the sequences of Myotragus could be very valuable for calibrating the mammalian mitochondrial DNA clock and, in particular, the tree of the Caprinae subfamily, to which Myotragus belongs. Results: We have retrieved the complete mitochondrial cytochrome b gene (1,143 base pairs), plus fragments of the mitochondrial 12S gene and the nuclear 28S rDNA multi-copy gene from a well preserved Myotragus subfossil bone. The best resolved phylogenetic trees, obtained with the cytochrome b gene, placed Myotragus in a position basal to the Ovis group. Using the calibration provided by the isolation of Balearic Islands, we calculated that the initial radiation of caprines can be dated at 6.2 ± 0.4 Mya. In addition, alpine and southern chamois, considered until recently the same species, split around 1.6 ± 0.3 Mya, indicating that the two chamois species have been separated much longer than previously thought. Conclusion: Since there are almost no extant endemic mammals in Mediterranean islands, the sequence of the extinct Balearic endemic Myotragus has been crucial for allowing us to use the Messinian crisis calibration point for dating the caprines phylogenetic tree.
dc.description.sponsorship This research was supported by the Dirección General de Investigación, Ministerio de Ciencia y Tecnología of Spain (grants BFU2004-02002 and BOS2003-08070), by Departament d'Universitats, Recerca i Societat de la Informació, Generalitat de Catalunya (grant 2001SGR00285) and a fellowship to LS.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher BioMed Central
dc.relation.ispartof BMC Evol. Biol. 2005; 5: 70
dc.rights (c) 2005 Lalueza-Fox et al. Creative Commons Attribution License
dc.rights.uri http://creativecommons.org/licenses/by/2.0/
dc.subject.other Genètica evolutiva
dc.subject.other ADN mitocondrial -- Genètica
dc.subject.other ADN fòssil
dc.title Molecular dating of caprines using ancient DNA sequences of Myotragus balearicus, an extinct endemic Balearic mammal
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1186/1471-2148-5-70
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion

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