【生态学】Nature文章被撤稿+1：因部分结果不可靠

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被认为是由性选择所驱动的，雌性对声音的偏好促使雄性发展出丰富多样的鸣叫声。然而，许多鸟类物种一生中只会学习一种鸣叫声。性选择如何促使单一鸣叫声谱系的进化尚不明确。

相关论文：

https://www.nature.com/articles/s41586-026-10483-x

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Vocal learning in songbirds is thought to have evolved through sexual selection, with female preference driving males to develop large and varied song repertoires1,2,3. However, many songbird species learn only a single song in their lifetime4. How sexual selection drives the evolution of single-song repertoires is not known. Here, by applying dimensionality-reduction techniques to the singing behaviour of zebra finches (Taeniopygia guttata), we show that syllable spread in low-dimensional feature space explains how single songs function as honest indicators of fitness. We find that this Gestalt measure of behaviour captures the spectrotemporal distinctiveness of song syllables in zebra finches; that females strongly prefer songs that occupy more latent space; and that matching path lengths in low-dimensional space is difficult for young males. Our findings clarify how simple vocal repertoires may have evolved in songbirds and indicate divergent strategies for how sexual selection can shape vocal learning.

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