Center for Tropical Research, Institute of Environment, University of California, Los Angeles, 619 Charles E. Young Dr. South, La Kretz Hall, Suite 300, Los Angeles, CA 90095-1496, USA.
Mol Phylogenet Evol. 2011 Aug;60(2):207-18. doi: 10.1016/j.ympev.2011.04.007. Epub 2011 May 4.
The patterns of genetic diversity and morphological variation are of central importance in understanding the evolutionary process that drive diversification. We use molecular, morphological, and ecological data to explore the influence of geography and ecology in promoting speciation in the widespread Andean hummingbird genus Adelomyia. Six monophyletic clades were recovered which show distributional limits at well-defined geographic barriers. Percentage sequence divergence ranged between 5.8% and 8.2% between phylogroups separated by large (>4000 km) and small (<50 km) distances respectively, suggesting that geographic isolation may be influential at very different scales. We show that morphological traits in independent phylogroups are more related to environmental heterogeneity than to geographic barriers. We provide a molecular reconstruction of relationships within Adelomyia and recommend its use in future comparative studies of historical biogeography and diversification in the Andes.
在理解推动多样化进化过程中，遗传多样性和形态变异模式具有核心重要性。我们使用分子、形态和生态数据来探索地理和生态因素对广泛分布的安第斯蜂鸟属 Adelomyia 物种形成的影响。我们发现了六个单系群，它们在明确的地理障碍处显示出分布极限。通过大（>4000 公里）和小（<50 公里）距离分开的系统发育群之间的序列差异百分比在 5.8%到 8.2%之间，表明地理隔离可能在非常不同的尺度上具有影响力。我们表明，独立系统发育群中的形态特征与环境异质性的关系比与地理障碍的关系更密切。我们提供了 Adelomyia 内部关系的分子重建，并建议在未来的安第斯历史生物地理学和多样化比较研究中使用它。
