globalchange  > 过去全球变化的重建
DOI: 10.1371/journal.pone.0083623
论文题名:
A New Species of River Dolphin from Brazil or: How Little Do We Know Our Biodiversity
作者: Tomas Hrbek; Vera Maria Ferreira da Silva; Nicole Dutra; Waleska Gravena; Anthony R. Martin; Izeni Pires Farias
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2014
发表日期: 2014-1-22
卷: 9, 期:1
语种: 英语
英文关键词: Fossil calibration ; New species reports ; Cytochrome oxidase ; Dolphins ; Polymerase chain reaction ; Mitochondrial DNA ; Phylogenetic analysis ; Rivers
英文摘要: 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.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0083623&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/19380
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: Laboratory of Evolution and Animal Genetics (LEGAL), Department of Biology, Institute of Biological Sciences, Federal University of Amazonas (UFAM), Manaus, AM, Brazil;Laboratory of Aquatic Mammals (LMA), National Research Institute of the Amazon (INPA), Manaus, AM, Brazil;Laboratory of Evolution and Animal Genetics (LEGAL), Department of Biology, Institute of Biological Sciences, Federal University of Amazonas (UFAM), Manaus, AM, Brazil;Laboratory of Evolution and Animal Genetics (LEGAL), Department of Biology, Institute of Biological Sciences, Federal University of Amazonas (UFAM), Manaus, AM, Brazil;Centre for Remote Environments, University of Dundee, Dundee, United Kingdom;Laboratory of Evolution and Animal Genetics (LEGAL), Department of Biology, Institute of Biological Sciences, Federal University of Amazonas (UFAM), Manaus, AM, Brazil

Recommended Citation:
Tomas Hrbek,Vera Maria Ferreira da Silva,Nicole Dutra,et al. A New Species of River Dolphin from Brazil or: How Little Do We Know Our Biodiversity[J]. PLOS ONE,2014-01-01,9(1)
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