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GEOGRAPHIC VARIATION AND SPECIES LIMITS IN CINNYCERTHIA WRENS OF THE ANDES

机译:安第斯山脉蛇形蕨的地理变异和物种限制

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摘要

Few studies have quantified geographic variation in widely distributed Andean birds despite the fact that the linearity of their distributions provides unique opportunity to assess latitudinal geographic variation. We examined geographic variation of morpho-metric and plumage characters in populations currently treated as a single species, the Sepia-brown Wren (Cinnycerthia peruana), that inhabits humid montane forests from northern Colombia to central Bolivia. Our analysis supports the recognition of three biological species (olivascens, peruana, and fulva) based on discrete morphometric differences as well as marked plumage differences. Size variation within populations is inconsistent with the predictions of Bergmann's Rule, whereas variation across species runs counter to the predictions, with the smallest species occurring farthest from the Equator.
机译:尽管事实上分布的线性为评估纬度地理变异提供了独特的机会,但很少有研究量化分布广泛的安第斯鸟类的地理变异。我们研究了目前被视为单一物种棕褐色棕W(Cinnycerthia peruana)的种群的形态计量和羽毛特征的地理变化,该种群居住在从哥伦比亚北部到玻利维亚中部的潮湿山地森林中。我们的分析支持基于离散的形态学差异以及明显的羽毛差异识别三种生物物种(橄榄,Peruana和fulful)。种群内的大小变化与伯格曼法则的预测不一致,而物种间的变化与预测相反,最小的物种出现在距赤道最远的地方。

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  • 来源
    《The Wilson Bulletin》 |1996年第2期|p.205-227|共23页
  • 作者单位

    Laboratory of Molecular Systematics, National Museum of Natural History, Smithsonian Institution MRC 534, Washington, D.C. 20560;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 鸟纲;
  • 关键词

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