ABSTRACT Bats are altricial, gregarious, and highly vocal animals. As such, they are compelling animal models for bioacoustic analyses of language-related traits. Insight into the vocal development of bats can provide a more comprehensive understanding of animal communication. We report the phenomenon of syllable merging in Hipposideros larvatus by analyzing changes to their isolation calls during ontogeny. Our findings indicate that composites in adult social calls originate from isolation calls. As pups developed, the interval between simple syllables gradually shortened, and different types of simple syllables combined into composites that were used for social communication. To our knowledge, this is the first study to report this phenomenon in constant frequency-frequency modulated (CF-FM) bats, and it might be a unique feature of isolation call development in H. larvatus.

中文翻译：

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Hipposideros larvatus个体发育过程中的音节合并

摘要 蝙蝠是好交的、群居的和高度发声的动物。因此，它们是用于语言相关特征的生物声学分析的引人注目的动物模型。深入了解蝙蝠的声音发展可以提供对动物交流的更全面的了解。我们通过分析个体发育过程中隔离调用的变化来报告 Hipposideros larvatus 中音节合并的现象。我们的研究结果表明，成人社交呼唤中的复合来自孤立呼唤。随着幼崽的发育，简单音节之间的间隔逐渐缩短，不同类型的简单音节组合成复合体，用于社交交流。据我们所知，这是第一项在恒定频率-频率调制 (CF-FM) 蝙蝠中报告这种现象的研究，