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Social signatures in echolocation calls of a leaf-roosting bat, Kerivoula furva
Bioacoustics ( IF 1.8 ) Pub Date : 2019-05-22 , DOI: 10.1080/09524622.2019.1616617
Mei-Ting Kao, Jian-Nan Liu, Hsi-Chi Cheng, Takefumi Nakazawa

ABSTRACT Bats may use echolocation for social communication (e.g. group cohesion and individual recognition) although it has evolved primarily for orientation and foraging. This idea has been tested by using bats living in permanent roosts (e.g. caves) in large colonies. Here, we investigated social signatures in echolocation calls of a leaf-roosting bat, Kerivoula furva, which forms a small-sized group (2–10 individuals), roosts in furled banana leaves and switches roosts almost every day following foliation, but nevertheless, its group membership is largely fixed. We hypothesised that echolocation calls of K. furva differ significantly between groups and/or individuals, so that individuals can effectively find roost members, despite frequently changing roosts. Social structural and call analyses supported this hypothesis. Discriminant function analysis provided correct classifications significantly better than random ones, with 34.8% vs. 25% and 26.5% vs. 6.25% for group and individual signatures, respectively. Taken together with previous studies, our results suggest the possibility that, irrespective of the roost type, echolocation calls of bats generally contain enough information to be potentially useful for social communication. Future studies are encouraged to accumulate individual call data for a standardized comparison of context-dependent call signatures and to better understand social communication of bats.

中文翻译:

栖息在树叶上的蝙蝠 Kerivoula furva 的回声定位呼叫中的社会特征

摘要 蝙蝠可能会使用回声定位进行社会交流(例如群体凝聚力和个人识别),尽管它主要是为了定向和觅食而进化的。这个想法已经通过使用生活在大殖民地永久栖息地(例如洞穴)中的蝙蝠进行了测试。在这里,我们调查了栖息在树叶上的蝙蝠 Kerivoula furva 的回声定位呼叫中的社会特征,它形成了一个小型群体(2-10 只),几乎每天都栖息在卷起的香蕉叶中,并且在落叶后几乎每天都栖息,但是,它的组成员在很大程度上是固定的。我们假设 K. furva 的回声定位呼叫在群体和/或个体之间存在显着差异,因此尽管栖息地频繁变化,个体仍可以有效地找到栖息地成员。社会结构和呼叫分析支持这一假设。判别函数分析提供的正确分类明显优于随机分类,组和个人签名分别为 34.8% 对 25% 和 26.5% 对 6.25%。结合之前的研究,我们的结果表明,无论栖息地类型如何,蝙蝠的回声定位呼叫通常都包含足够的信息,可能对社会交流有用。鼓励未来的研究积累个人呼叫数据,以对依赖于上下文的呼叫签名进行标准化比较,并更好地了解蝙蝠的社会交流。不管栖息地的类型如何,蝙蝠的回声定位呼叫通常包含足够的信息,可能对社交交流有用。鼓励未来的研究积累个人呼叫数据,以对依赖于上下文的呼叫签名进行标准化比较,并更好地了解蝙蝠的社会交流。不管栖息地的类型如何,蝙蝠的回声定位呼叫通常包含足够的信息,可能对社交交流有用。鼓励未来的研究积累个人呼叫数据,以对依赖于上下文的呼叫签名进行标准化比较,并更好地了解蝙蝠的社会交流。
更新日期:2019-05-22
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