A synthetic phylogeny of freshwater crayfish: insights for conservation
A synthetic phylogeny of freshwater crayfish: insights for conservation
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DOI：
10.1098/rstb.2014.0009
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发表时间：
2015-02-19
影响因子：
6.3
通讯作者：
Crandall, Keith A.
中科院分区：
文献类型：
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作者：
Owen, Christopher L.;Bracken-Grissom, Heather;Crandall, Keith A.
系统发育分类学正在走向复兴，我们从把我们的系统发育估计作为发表的论文中的静态图像，将分类作为硬拷贝清单，转变为将系统发生估计和动态分类作为进一步分析的元数据。开放生命树项目(optreeoflife.org)正在开发合成工具，以利用系统发育推理和强大的分类学的力量来开发合成生命树。我们利用这种方法来估计淡水小龙虾的合成树。小龙虾是一个特殊的群体，可以证明合成方法的实用性，因为最近有一些关于小龙虾的系统发育研究，以及一个强大的基础分类框架。重要的是，世界自然保护联盟红色名录小组也对小龙虾进行了广泛的评估，因此拥有准确和最新的区域和保护状况数据，可用于在系统发育背景下进行分析。在这里，我们建立了世界淡水小龙虾的综合系统发育图，并研究了威胁的系统发育分布。我们还基于所有可用的GenBank小龙虾序列来估计分子系统发育，并使用这棵树来估计分歧时间和测试分歧速率变异。最后，我们进行边缘和树篱分析，并确定一些淡水小龙虾物种在保护工作中具有最优先的地位。
Phylogenetic systematics is heading for a renaissance where we shift from considering our phylogenetic estimates as a static image in a published paper and taxonomies as a hardcopy checklist to treating both the phylogenetic estimate and dynamic taxonomies as metadata for further analyses. The Open Tree of Life project (opentreeoflife.org) is developing synthesis tools for harnessing the power of phylogenetic inference and robust taxonomy to develop a synthetic tree of life. We capitalize on this approach to estimate a synthesis tree for the freshwater crayfish. The crayfish make an exceptional group to demonstrate the utility of the synthesis approach, as there recently have been a number of phylogenetic studies on the crayfishes along with a robust underlying taxonomic framework. Importantly, the crayfish have also been extensively assessed by an IUCN Red List team and therefore have accurate and up-to-date area and conservation status data available for analysis within a phylogenetic context. Here, we develop a synthesis phylogeny for the world's freshwater crayfish and examine the phylogenetic distribution of threat. We also estimate a molecular phylogeny based on all available GenBank crayfish sequences and use this tree to estimate divergence times and test for divergence rate variation. Finally, we conduct EDGE and HEDGE analyses and identify a number of species of freshwater crayfish of highest priority in conservation efforts.