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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Incipient species formation in salamanders of the Ensatina complex
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Incipient species formation in salamanders of the Ensatina complex

机译:Ensatina复合体sal中的初始物种形成

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摘要

The Ensatina eschscholtzii complex of pleth- odontid salamanders, a well-known "ring species," is thought to illustrate stages in the speciation process. Early research, based on morphology and coloration, has been extended by the incorporation of studies of protein variation and mitochon- drial DNA sequences. The new data show that the complex includes a number of geographically and genetically distinct components that are at or near the species level. The complex is old and apparently has undergone instances of range contraction, isolation, differentiation, and then expansion and secondary contact.
机译:人们认为,著名的“环物种”-齿状sal的Ensatina eschscholtzii复合体可以说明物种形成过程的各个阶段。通过结合蛋白质变异和线粒体DNA序列的研究,扩展了基于形态和颜色的早期研究。新数据表明,该综合体包括许多处于物种水平或接近物种水平的地理和遗传上不同的成分。该复合物是旧的,并且显然经历了范围收缩,隔离,分化,然后扩展和二级接触的情况。

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