| Bayesian Morphological Clock Methods Resurrect Placoderm Monophyly and Reveal Rapid Early Evolution in Jawed Vertebrates | |
| King, Benedict1; Qiao, Tuo2; Lee, Michael S. Y.1,3; Zhu, Min2; Long, John A.1 | |
| 2017-07-01 | |
| 发表期刊 | SYSTEMATIC BIOLOGY
 |
| 卷号 | 66期号:4页码:499-516 |
| 文章类型 | Article |
| 摘要 | The phylogeny of early gnathostomes provides an important framework for understanding one of the most significant evolutionary events, the origin and diversification of jawed vertebrates. A series of recent cladistic analyses have suggested that the placoderms, an extinct group of armoured fish, form a paraphyletic group basal to all other jawed vertebrates. We revised and expanded this morphological data set, most notably by sampling autapomorphies in a similar way to parsimony-informative traits, thus ensuring this data (unlike most existing morphological data sets) satisfied an important assumption of Bayesian tip-dated morphological clock approaches. We also found problems with characters supporting placoderm paraphyly, including character correlation and incorrect codings. Analysis of this data set reveals that paraphyly and monophyly of core placoderms (excluding maxillate forms) are essentially equally parsimonious. The two alternative topologies have different root positions for the jawed vertebrates but are otherwise similar. However, analysis using tip-dated clock methods reveals strong support for placoderm monophyly, due to this analysis favoring trees with more balanced rates of evolution. Furthermore, enforcing placoderm paraphyly results in higher levels and unusual patterns of rate heterogeneity among branches, similar to that generated from simulated trees reconstructed with incorrect root positions. These simulations also show that Bayesian tip-dated clock methods outperform parsimony when the outgroup is largely uninformative (e.g., due to inapplicable characters), as might be the case here. The analysis also reveals that gnathostomes underwent a rapid burst of evolution during the Silurian period which declined during the Early Devonian. This rapid evolution during a period with few articulated fossils might partly explain the difficulty in ascertaining the root position of jawed vertebrates. |
| 关键词 | Bayesian Beast Morphological Clock Morphology Monophyly Phylogenetics Placoderms Tip Dating Tree Topology |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| DOI | 10.1093/sysbio/syw107 |
| 关键词[WOS] | ORIGIN ; FISH ; GNATHOSTOME ; ORDOVICIAN ; ARTHRODIRA ; PHYLOGENY ; AUSTRALIA ; CHINA ; CHONDRICHTHYAN ; BRAINCASE |
| 收录类别 | SCI |
| 语种 | 英语 |
| 项目资助者 | Australian Research Council |
| WOS研究方向 | Evolutionary Biology |
| WOS类目 | Evolutionary Biology |
| WOS记录号 | WOS:000403933600002 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.205/handle/311034/7715 |
| 专题 | 古低等脊椎动物研究室 |
| 作者单位 | 1.Flinders Univ S Australia, Sch Biol Sci, POB 2100, Adelaide, SA 5001, Australia 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, POB 643, Beijing 100044, Peoples R China 3.South Australian Museum, Earth Sci Sect, North Terrace, Adelaide, SA 5000, Australia |
| 推荐引用方式 GB/T 7714 | King, Benedict,Qiao, Tuo,Lee, Michael S. Y.,et al. Bayesian Morphological Clock Methods Resurrect Placoderm Monophyly and Reveal Rapid Early Evolution in Jawed Vertebrates[J]. SYSTEMATIC BIOLOGY,2017,66(4):499-516. |
| APA | King, Benedict,Qiao, Tuo,Lee, Michael S. Y.,Zhu, Min,&Long, John A..(2017).Bayesian Morphological Clock Methods Resurrect Placoderm Monophyly and Reveal Rapid Early Evolution in Jawed Vertebrates.SYSTEMATIC BIOLOGY,66(4),499-516. |
| MLA | King, Benedict,et al."Bayesian Morphological Clock Methods Resurrect Placoderm Monophyly and Reveal Rapid Early Evolution in Jawed Vertebrates".SYSTEMATIC BIOLOGY 66.4(2017):499-516. |
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