Collaborative Research: Mammalian Phylogeography in Regional Warm Deserts of North America

合作研究:北美地区温暖沙漠的哺乳动物系统发育地理学

基本信息

  • 批准号:
    9629787
  • 负责人:
  • 金额:
    $ 13.99万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    1996
  • 资助国家:
    美国
  • 起止时间:
    1996-09-15 至 2000-08-31
  • 项目状态:
    已结题

项目摘要

9629787 RIDDLE The recent appearance of extensive regions of aridlands in southwestern North America has led many to assume that pattersn of relationships among the plants and animals adapted to these regions are also recent. Yet many of the species are ancient, having persisted in scattered dry sites for many millions of years. In collaborative investigations, Brett R. Riddle and David J. Hafner, together with their collaborators, will investigate the possibility of ancient structure among the regional deserts and reconstruct the sequence of divergence of these deserts. They will examine, by means of sequence divergences in mitochondrial DNA, the genetic relationships among four groups of rodents. These rodents are currently restricted to regional warm deserts and neighboring chaparral or thornscrub habitats, and have fossil records that indicate their presence in the study area during the early development of the regional deserts, up to 5.5 million years ago. Relationships among these rodents will serve as indicators of relationships among other animals and plants in the deserts. Dr. RiddleOs portion of the collaboration will involve examination of the mitochondrial DNA of the groups of rodents, which include white-footed and pocket mice, antelope ground squirrels, and kangaroo rats. These animals will be collected during field work in the Chihuahuan, Great Basin, San Joaquin, Sonoran, and Peninsular deserts of the southwestern United States and northern Mexico, as well as the neighboring California chaparral and Sinaloan thornscrub regions, and six islands off Baja California. The island samples are expected to provide estimates of the geographic distribution of the rodents on the Baja California peninsular mainland ca. 5,000 years ago, when the islands were separated from the peninsula. Gene sequences isolated from the mitochondrial DNAs will be sequenced, and the sequences used to construct phylogenetic trees that will test the degree of relationships among the animals. The re search is expected to contribute to human understanding of how species, and the distribution of species, change over time, and especially how such changes in species may be influenced by changes in the topology and climate of the regions in which the species live.
最近在北美西南部出现了大面积的干旱地区,这使许多人认为适应这些地区的动植物之间的关系模式也是最近才出现的。 然而,许多物种都是古老的,在分散的干旱地区生存了数百万年。 在合作调查中,Brett R.里德尔和大卫J.哈夫纳以及他们的合作者将调查区域沙漠中古老结构的可能性,并重建这些沙漠的分歧序列。 他们将通过线粒体DNA的序列差异来研究四组啮齿动物之间的遗传关系。 这些啮齿动物目前仅限于区域温暖的沙漠和邻近的查帕拉尔或荆棘灌木栖息地,并有化石记录表明,它们在区域沙漠早期发展期间存在于研究区域,直到550万年前。 这些啮齿动物之间的关系将作为沙漠中其他动物和植物之间关系的指标。 RiddleO博士的合作部分将涉及对啮齿动物群体的线粒体DNA的检查,这些啮齿动物包括白足鼠和口袋鼠、羚羊地松鼠和袋鼠。 这些动物将在美国西南部和北方墨西哥的奇瓦瓦、大盆地、圣华金、索诺兰和半岛沙漠以及邻近的加州查帕拉尔和锡那罗亚荆棘区以及下加利福尼亚附近的六个岛屿的实地工作期间收集。 岛上的样本预计将提供估计的地理分布的啮齿动物在下加利福尼亚半岛大陆约。5,000年前,当群岛从半岛分离出来时。 将对从线粒体DNA中分离的基因序列进行测序,并将这些序列用于构建系统发育树,以测试动物之间的关系程度。 这项研究有望有助于人类了解物种和物种分布如何随时间变化,特别是物种的这种变化如何受到物种生活地区的拓扑结构和气候变化的影响。

项目成果

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Brett Riddle其他文献

Lyons et al. reply
里昂等人的答复
  • DOI:
    10.1038/nature20097
  • 发表时间:
    2016-10-26
  • 期刊:
  • 影响因子:
    48.500
  • 作者:
    S. Kathleen Lyons;Joshua H. Miller;Kathryn L. Amatange;Anna K. Behrensmeyer;Antoine Bercovici;Jessica L. Blois;Matt Davis;William DiMichele;Andrew Du;Jussi T. Eronen;J. Tyler Faith;Gary R. Graves;Nathan Jud;Conrad Labandeira;Cindy V. Looy;Brian McGill;David Patterson;Silvia Pineda-Munoz;Richard Potts;Brett Riddle;Rebecca Terry;Anikó Tóth;Werner Ulrich;Amelia Villaseñor;Scott Wing;Heidi Anderson;John Anderson;Nicholas J. Gotelli
  • 通讯作者:
    Nicholas J. Gotelli

Brett Riddle的其他文献

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{{ truncateString('Brett Riddle', 18)}}的其他基金

DISSERTATION RESEARCH:Integrating comparative phylogeography with ecological modeling to investigate Late Quaternary biogeography in four species of kangaroo rats (genus Dipodomys)
论文研究:将比较系统发育地理学与生态模型相结合,研究四种袋鼠大鼠(Dipodomys 属)的晚第四纪生物地理学
  • 批准号:
    0808565
  • 财政年份:
    2008
  • 资助金额:
    $ 13.99万
  • 项目类别:
    Standard Grant
Really Big Biogeographically-based Integrative Historical and Ecological Science: Grand Collaborative Studies of Whole Biotas
真正基于生物地理学的综合历史和生态科学:整个生物群的大型合作研究
  • 批准号:
    0639022
  • 财政年份:
    2006
  • 资助金额:
    $ 13.99万
  • 项目类别:
    Standard Grant
Collaborative Research: Nested Events and Embedded Phylogeographic Structure within the Southern Regional Deserts of North America
合作研究:北美南部地区沙漠中的嵌套事件和嵌入式系统发育地理结构
  • 批准号:
    0237166
  • 财政年份:
    2003
  • 资助金额:
    $ 13.99万
  • 项目类别:
    Standard Grant
Historical Ecology of the North American Arid-lands Rodent Guild: Molecular Phylogenetics and Biogeography of Perognathus, Chaetodipus, and Onychomys
北美干旱地区啮齿动物协会的历史生态学:Perognathus、Chaetodipus 和 Onychomys 的分子系统发育学和生物地理学
  • 批准号:
    9107520
  • 财政年份:
    1991
  • 资助金额:
    $ 13.99万
  • 项目类别:
    Continuing Grant

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