On the origin of and phylogenetic relationships among living amphibians


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ZARDOYA, Rafael, Axel MEYER, 2001. On the origin of and phylogenetic relationships among living amphibians. In: Proceedings of the National Academy of Sciences of the United States of America. 98(13), pp. 7380-7383. ISSN 0027-8424. eISSN 1091-6490

@article{Zardoya2001origi-8083, title={On the origin of and phylogenetic relationships among living amphibians}, year={2001}, doi={10.1073/pnas.111455498}, number={13}, volume={98}, issn={0027-8424}, journal={Proceedings of the National Academy of Sciences of the United States of America}, pages={7380--7383}, author={Zardoya, Rafael and Meyer, Axel} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/8083"> <dc:contributor>Zardoya, Rafael</dc:contributor> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:39:49Z</dc:date> <dcterms:abstract xml:lang="eng">The phylogenetic relationships among the three orders of modern amphibians (Caudata, Gymnophiona, and Anura) have been estimated based on both morphological and molecular evidence. Most morphological and paleontological studies of living and fossil amphibians support the hypothesis that salamanders and frogs are sister lineages (the Batrachia hypothesis) and that caecilians are more distantly related. Previous interpretations of molecular data based on nuclear and mitochondrial rRNA sequences suggested that salamanders and caecilians are sister groups to the exclusion of frogs. In an attempt to resolve this apparent conflict, the complete mitochondrial genomes of a salamander (Mertensiella luschani) and a caecilian (Typhlonectes natans) were determined (16,656 and 17,005 bp, respectively) and compared with previously published sequences from a frog (Xenopus laevis) and several other groups of vertebrates. Phylogenetic analyses of the mitochondrial data supported with high bootstrap values the monophyly of living amphibians with respect to other living groups of tetrapods, and a sister group relationship of salamanders and frogs. The lack of phylogenetically informative sites in the previous rRNA data sets (because of its shorter size and higher among-site rate variation) likely explains the discrepancy between our results and those based on previous molecular data. Strong support of the Batrachia hypothesis from both molecule- and morphology-based studies provides a robust phylogenetic framework that will be helpful to comparative studies among the three living orders of amphibians and will permit better understanding of the considerably divergent vertebral, brain, and digit developmental patterns found in frogs and salamanders.</dcterms:abstract> <dc:contributor>Meyer, Axel</dc:contributor> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8083"/> <dcterms:issued>2001</dcterms:issued> <dc:format>application/pdf</dc:format> <dcterms:title>On the origin of and phylogenetic relationships among living amphibians</dcterms:title> <dc:rights>deposit-license</dc:rights> <dc:creator>Zardoya, Rafael</dc:creator> <dc:creator>Meyer, Axel</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:39:49Z</dcterms:available> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dc:language>eng</dc:language> <dcterms:bibliographicCitation>First publ. in: Proceedings National Acadamy of Science USA 98 (2001), pp. 7380-7383</dcterms:bibliographicCitation> </rdf:Description> </rdf:RDF>

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