ABSTRACT Many bat pups emit isolation calls with low-frequency components that facilitate maternal recognition. Most previous studies have noted that isolation calls generally have unique individual identity, but few studies have attempted to assess the potential impact of genetic factors on individual characteristics of isolation calls. The Asian parti-coloured bat is one of the few bat species that typically produce twins. Therefore, they represent a model system for exploring the influence of genetic factors on bat pup isolation call characteristics. In this paper, we recorded isolation calls from 16 pups at three days of age in the laboratory, conducted principal component analysis (PCA) on 13 acoustic parameters of isolation calls, and then performed discriminant function analysis (DFA). The DFA of acoustic parameters revealed that these calls carry information about individual identity. These results may indicate that there is acoustically mediated mother–infant recognition. Further analysis showed that twin siblings have more obvious call similarities than non-twins, which may be caused by genetic factors.

中文翻译：

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来自双胞胎兄弟姐妹的隔离呼叫在亚洲杂色蝙蝠 Vespertilio sinensis 中相似

摘要 许多蝙蝠幼崽发出带有低频成分的隔离呼叫，可促进母体识别。之前的大多数研究都指出，隔离呼叫通常具有独特的个体身份，但很少有研究试图评估遗传因素对隔离呼叫的个体特征的潜在影响。亚洲杂色蝙蝠是少数通常会产生双胞胎的蝙蝠物种之一。因此，它们代表了一个模型系统，用于探索遗传因素对蝙蝠幼崽隔离呼叫特征的影响。在本文中，我们在实验室记录了 16 只 3 日龄幼崽的隔离叫声，对隔离叫声的 13 个声学参数进行了主成分分析 (PCA)，然后进行了判别函数分析 (DFA)。声学参数的 DFA 显示这些调用携带有关个人身份的信息。这些结果可能表明存在声学介导的母婴识别。进一步分析表明，双胞胎兄弟姐妹比非双胞胎有更明显的叫声相似性，这可能是遗传因素造成的。