ON THE ORIGIN OF DIVERGENCE OF LEARNED SIGNALS (SONGS) IN ISOLATED POPULATIONS
ON THE ORIGIN OF DIVERGENCE OF LEARNED SIGNALS (SONGS) IN ISOLATED POPULATIONS
复制标题
关于孤立人群中学习信号（歌曲）分歧的起源
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
G. Thielcke
中科院分区：
文献类型：
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作者：
G. Thielcke
总结
摩洛哥的短趾爬树鸟 Certhia brachydactyla 的叫声与欧洲短趾爬树鸟的叫声非常不同。
来自中欧的短趾树爬虫对播放北非短趾树爬虫的歌曲没有反应。这个结果在统计上非常显着。
中欧的爬树鸟对北非短趾爬树鸟的歌曲播放没有反应，或者（某些雄性）对中欧短趾爬树鸟的歌曲的反应同样少。这个结果在统计上非常显着。
三个假设被检验作为对这些结果的解释：对比强化、对比损失和学习撤回。撤回学习可以最好地解释事实。根据这一假设，摩洛哥被年轻的欧洲短趾树爬行者殖民，他们的歌声尚未通过学习而固定下来。新人类的创建者演化出了一首不同的歌曲，从那时起就一直以传统方式传播。
Summary
Short-toed Treecreepers Certhia brachydactyla in Morocco sing very differently from European Short-toed Treecreepers.
Short-toed Treecreepers from Central Europe do not react to the playback of songs of North African Short-toed Treecreepers. This result is statistically highly significant.
Treecreepers C. familiaris of Central Europe do not react to the playback of songs of North African Short-toed Treecreepers or (some males) react just as little as they do to songsof Central European Short-toed Treecreepers. This result is statistically highly significant.
Three hypotheses are examined as interpretations of these results: contrast reinforcement, loss of contrast and withdrawal of learning. The facts are best explained by withdrawal of learning. According to this hypothesis, Morocco was colonised by young European Short-toed Treecreepers with a song that had not yet been fixed by learning. The founders of the new population evolved a divergent song, which has been transmitted by tradition ever since.