在蝶时间树中对14个节点的生物地质构造学校准
Michael Heads1, John R Grehan2, John Nielsen3
1Buffalo Museum of Science, Buffalo, NY, 14211-1293, USA.
概括
蝶亚族Coeononymphina的生物地理演变是使用构造事件来追溯的,这揭示了其类的代名词起源. 这种方法为蝶的多样化和地理分布提供了可靠的时间表.
科学领域:
- 进化生物学 进化生物学
- 生物地理学 生物地理学 生物地理学
- 地质地质地质地质地质地
背景情况:
- 蝶子部落Coenonymphina (Nymphalidae: Satyrinae) 呈现出一个独特的遗传结构,四个主要分类分布在所罗门群岛,澳大利亚,南美洲西北和劳拉西亚.
- 之前关于蝶生物地理学的研究依赖于潜在的任意先验来校准化石校准的克拉德年龄,限制了准确性.
研究的目的:
- 重新评估蝶亚族Coeononymphina的生物地理演变.
- 通过生物地理构造学校准,为塑造Coeenonymphina类群分布的代理事件建立一个强大的时间表.
主要方法:
- 拒绝了将化石校准的克拉德年龄转换为最大克拉德年龄的任意先验.
- 采用生物地理构造学校准,将化石校准年龄视为最低估计.
- 扩展了多个节点的日期方法,将Coenonymphina内的14个节点与十个主要的构造事件相关联.
主要成果:
- 建立了一个基因系节点序列,与十个主要构造事件的时间序列保持一致.
- 证明了14个家族遗传节点和特定的构造事件之间的强烈相关性,支持clades的代理起源.
- 提供了代理事件的时间表,包括漂移前裂,海底扩散,岩石化,盆地动态和断层移位.
结论:
- Coenonymphina的生物地理演变受到地质构造事件的强烈影响,支持类型多样化的代理模式.
- 生物地质-构造学校准提供了一个更可靠的方法来约会与任意先前施加相比,遗传学-生物地质断裂.
- 该研究为这种蝶亚族的多样化和分布提供了详细的地质时间表.
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