Phylogenetic relationships and divergence times of Charadriiformes genera: multigene evidence for the Cretaceous origin of at least 14 clades of shorebirds
Phylogenetic relationships and divergence times of Charadriiformes genera: multigene evidence for the Cretaceous origin of at least 14 clades of shorebirds
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DOI：
10.1098/rsbl.2006.0606
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发表时间：
2007-04-22
期刊：
影响因子：
3.3
通讯作者：
Paton, Tara A.
中科院分区：
文献类型：
--
作者：
Baker, Allan J.;Pereira, Sergio L.;Paton, Tara A.
由于一些神秘属的系统位置尚不清楚，目前对滨鸟性状进化的比较研究还很有限。因此，我们使用贝叶斯方法，获得了一个良好的支持，使用5 kb的线粒体和核序列的90个公认的属的同源性。这棵树包括三个主要分支：拉里（海鸥，海雀和盟友加上buttonquail）作为Scolopaci（鹬，jacanas和盟友）的姐妹，反过来又是Charadrii（plovers，牡蛎捕手和盟友）的姐妹，就像以前的分子研究一样。Plovers和Plovidies没有被恢复为单系组合，而埃及普洛弗显然不是一种普洛弗。利用多个化石限制的分子测年表明，这三个亚目起源于晚白垩世79和102 Mya之间，至少有14个血统的现代滨鸟幸存下来的大灭绝在K/T边界。以前的困难，在确定系统发育关系的神秘类群反映了这样一个事实，即它们是分化良好的旧，属贫血统的残遗。我们避免建议系统的修订滨鸟在这个时候，因为基因树可能无法恢复物种树时，长的分支连接到深，较短的分支，是一些神秘的类群的情况下。
Comparative study of character evolution in the shorebirds is presently limited because the phylogenetic placement of some enigmatic genera remains unclear. We therefore used Bayesian methods to obtain a well-supported phylogeny of 90 recognized genera using 5 kb of mitochondrial and nuclear sequences. The tree comprised three major clades: Lari (gulls, auks and allies plus buttonquails) as sister to Scolopaci (sandpipers, jacanas and allies), and in turn sister to Charadrii (plovers, oystercatchers and allies), as in previous molecular studies. Plovers and noddies were not recovered as monophyletic assemblages, and the Egyptian plover Pluvianus is apparently not a plover. Molecular dating using multiple fossil constraints suggests that the three suborders originated in the late Cretaceous between 79 and 102 Mya, and at least 14 lineages of modern shorebirds survived the mass extinction at the K/T boundary. Previous difficulties in determining the phylogenetic relationships of enigmatic taxa reflect the fact that they are well-differentiated relicts of old, genus-poor lineages. We refrain from suggesting systematic revisions for shorebirds at this time because gene trees may fail to recover the species tree when long branches are connected to deep, shorter branches, as is the case for some of the enigmatic taxa.