Please use this identifier to cite or link to this item: https://repositorio.inpa.gov.br/handle/1/14714
Title: A new species of river dolphin from Brazil or: How little do we know our biodiversity
Authors: Hrbek, Tomas
Silva, Vera Maria Ferreira da
Dutra, Nicole C.L.
Gravena, Waleska
Martin, Anthony Richard
Farias, Izeni P.
Keywords: Cell Nucleus Dna
Dna, Mitochondrial
Cytochrome B
Cytochrome C Oxidase
Microsatellite Dna
Dna, Mitochondrial
Biodiversity
Dolphin
Inia Araguaiaensis
Inia Boliviensis
Inia Geoffrensis
Molecular Phylogeny
Neotropics
New Species
Nonhuman
Nucleotide Sequence
River Basin
Animals
Biodiversity
Chemistry
Classification
Dna Sequence
Dolphin
Endangered Species
Genetic Variability
Genetics
Geography
Growth, Development And Aging
Molecular Genetics
Phylogeny
Principal Component Analysis
River
Animalss
Biodiversity
Cytochromes B
Dna, Mitochondrial
Dolphins
Electron Transport Complex Iv
Endangered Species
Genetic Variation
Geography
Microsatellite Repeats
Molecular Sequence Data
Phylogeny
Principal Component Analysis
Rivers
Sequence Analysis, Dna
Issue Date: 2014
metadata.dc.publisher.journal: PLoS ONE
metadata.dc.relation.ispartof: Volume 9, Número 1
Abstract: True river dolphins are some of the rarest and most endangered of all vertebrates. They comprise relict evolutionary lineages of high taxonomic distinctness and conservation value, but are afforded little protection. We report the discovery of a new species of a river dolphin from the Araguaia River basin of Brazil, the first such discovery in nearly 100 years. The species is diagnosable by a series of molecular and morphological characters and diverged from its Amazonian sister taxon 2.08 million years ago. The estimated time of divergence corresponds to the separation of the Araguaia-Tocantins basin from the Amazon basin. This discovery highlights the immensity of the deficit in our knowledge of Neotropical biodiversity, as well as vulnerability of biodiversity to anthropogenic actions in an increasingly threatened landscape. We anticipate that this study will provide an impetus for the taxonomic and conservation reanalysis of other taxa shared between the Araguaia and Amazon aquatic ecosystems, as well as stimulate historical biogeographical analyses of the two basins. © 2014 Hrbek et al.
metadata.dc.identifier.doi: 10.1371/journal.pone.0083623
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