Fossil gaps inferred from phylogenies alter the apparent nature of diversification in dragonflies and their relatives.
Fossil gaps inferred from phylogenies alter the apparent nature of diversification in dragonflies and their relatives.
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DOI：
10.1186/1471-2148-11-252
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发表时间：
2011-09-14
影响因子：
3.4
通讯作者：
Mayhew PJ
中科院分区：
文献类型：
--
作者：
Davis RB;Nicholson DB;Saunders EL;Mayhew PJ
化石记录表明，海洋和陆地分类群的进化枝生长可能不同，支持前者的平衡模型和后者的扩张主义模型。然而，不完整的采样可能会使仅基于化石数据的研究结果产生偏差。为了试图纠正这种偏见，我们组装系统发育超树上的一个最古老的分支的昆虫，蜻蜓（蜻蜓，豆娘和它们灭绝的亲戚），使用MRP和MRC。我们使用的树木，以确定何时，在什么样的分支，在分类丰富的变化发生。然后，我们测试是否平衡或扩张模型的化石数据单独支持，以及是否发现不同时，系统发育信息被用来推断化石记录中的差距。在两个超级树之间的家庭水平的关系有广泛的协议，虽然有一些不确定性沿着骨干的树关于蜻蜓（不等翅目）。当考虑到化石信息时，“异翅目”显示为并系。在这两棵树中，净多样化的减少与物种贫乏的现存家庭（Neopetaliidae，Hemiphlebiidae），和一个上移与Calopalidae + Polythoridae。当幽灵范围从化石记录中推断出来时，许多科的起源日期要早得多。在系统发育的背景下，家庭一级的血统的数量被证明是高达两倍的化石记录单独表明通过白垩纪和新生代，和逻辑增加的丰富度检测到的指数增长，而不是由化石单独表示。我们的分析支持的概念，分类群，这似乎有多样化的指数使用化石数据，实际上可能有多样化的逻辑。这反过来又表明，海洋和陆地化石记录之间的主要明显差异之一可能只是采样不完整的人为因素。我们的研究结果也支持以前的概念，成人着色起着重要的作用，在odonate辐射，异翅目应分组在一个单一的包容性分类与异翅目，Zygoptera分开。
The fossil record has suggested that clade growth may differ in marine and terrestrial taxa, supporting equilibrial models in the former and expansionist models in the latter. However, incomplete sampling may bias findings based on fossil data alone. To attempt to correct for such bias, we assemble phylogenetic supertrees on one of the oldest clades of insects, the Odonatoidea (dragonflies, damselflies and their extinct relatives), using MRP and MRC. We use the trees to determine when, and in what clades, changes in taxonomic richness have occurred. We then test whether equilibrial or expansionist models are supported by fossil data alone, and whether findings differ when phylogenetic information is used to infer gaps in the fossil record. There is broad agreement in family-level relationships between both supertrees, though with some uncertainty along the backbone of the tree regarding dragonflies (Anisoptera). "Anisozygoptera" are shown to be paraphyletic when fossil information is taken into account. In both trees, decreases in net diversification are associated with species-poor extant families (Neopetaliidae, Hemiphlebiidae), and an upshift is associated with Calopterygidae + Polythoridae. When ghost ranges are inferred from the fossil record, many families are shown to have much earlier origination dates. In a phylogenetic context, the number of family-level lineages is shown to be up to twice as high as the fossil record alone suggests through the Cretaceous and Cenozoic, and a logistic increase in richness is detected in contrast to an exponential increase indicated by fossils alone. Our analysis supports the notion that taxa, which appear to have diversified exponentially using fossil data, may in fact have diversified more logistically. This in turn suggests that one of the major apparent differences between the marine and terrestrial fossil record may simply be an artifact of incomplete sampling. Our results also support previous notions that adult colouration plays an important role in odonate radiation, and that Anisozygoptera should be grouped in a single inclusive taxon with Anisoptera, separate from Zygoptera.
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DOI：
10.1046/j.1439-0469.2001.00165.x
发表时间：
2001-12-01
影响因子：
1.9
作者：
Bechly, G;Brauckmann, C;Gröning, E
通讯作者：
Gröning, E
影响因子：
56.9
作者：
Alroy, John;Aberhan, Martin;Visaggi, Christy C.
通讯作者：
Visaggi, Christy C.
DOI：
10.1073/pnas.0802597105
发表时间：
2008-08-12
影响因子：
11.1
作者：
Alroy, John
通讯作者：
Alroy, John
DOI：
10.1098/rspb.2009.2299
发表时间：
2010-05-22
影响因子：
4.7
作者：
Davis, Robert B.;Baldauf, Sandra L.;Mayhew, Peter J.
通讯作者：
Mayhew, Peter J.
影响因子：
5.8
作者：
Creevey, CJ;McInerney, JO
通讯作者：
McInerney, JO