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首页> 外文期刊>Biology Bulletin >Relations between the Yellowhammer (Emberiza citrinella) and the Pine Bunting (Emberiza leucocephalos) in the Forested Steppe of the Trans-Urals
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Relations between the Yellowhammer (Emberiza citrinella) and the Pine Bunting (Emberiza leucocephalos) in the Forested Steppe of the Trans-Urals

机译：穿越乌拉尔森林的草原中的黄锤（Emberiza citrinella）和松树彩旗（Emberiza leucocephalos）之间的关系

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摘要

We studied the phenotypic composition of the populations and variability of songs in two bunting species in three localities on the western border of the sympatry zone: in the southern part of Tyumen' oblast and in the center and southern of Kurgan oblast. Over the last several decades, the zone of contact of the studied species has expanded significantly. The pine bunting started breeding regularly in the area at the end of the 20th century, and at present it is considered a common species comparable in abundance to the yellowhammer. The share of phenotypic hybrids varies from 25 to 50% reaching its maximum at the boundary of the pine bunting's nesting range. East of this boundary, the hybridization level is reduced, this being seen in a sharp decrease in the share of "leucocephala hybrids." An analysis of the phenotypic variability of the hybrids shows that they can be divided into two groups similar in coloration to the parental species. The study results let us presume that the hybridization is limited and hybrids return mostly to backcrossing with the parental species. This presumption also finds support in an analysis of the song structure: the yellowhammer and the pine bunting have songs of different, easily distinguishable dialects.
机译：我们研究了交配区西部边界上三个地区的两个旗布种群的表型组成和歌曲变异性：在秋明州的南部和库尔干州的中部和南部。在过去的几十年中，所研究物种的接触区已大大扩展。松树彩旗在20世纪末开始在该地区定期繁殖，目前被认为是与黄锤数量相当的常见物种。表型杂种的比例从25％到50％不等，达到了在松木bun的筑巢范围边界处的最大值。在此边界以东，杂交水平降低了，这可从“白头翁杂种”的份额急剧下降中看出。对杂种表型变异性的分析表明，它们可以分为两组，其颜色与亲本物种相似。研究结果让我们推测杂交是有限的，杂种大部分返回与亲本种回交。这种推论在分析歌曲结构时也得到了支持：黄锤和松木彩旗具有不同，易于区分的方言歌曲。

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