Abstract Bats play an important role by providing ecosystem services including pollination, seed dispersal, forest regeneration and insect pest control and also serve as bio-indicators. In the present study, we present an acoustic guide to the calls of nine species of bats from Gujarat belonging to families Rhinopomatidae (Rhinopoma hardwickii, Rhinopoma microphyllum), Emballonuridae (Taphozous melanopogon, Taphozous longimanus and Taphozous nudiventris), Rhinolophidaea (Rhinolophus lepidus), Hipposideridae (Hipposideros galeritus) and Vespertilionidae (Scotophilus heathii, Pipistrellus ceylonicus). Discriminant function analysis was used to classify the bat calls to the species level using leave-one-out cross validation. Analysis was carried out separately for constant frequency (CF) calls and frequency-modulated (FM) calls. Bats echolocating with CF calls were classified with 100% success, while in the case of FM calls, the calls were classified with 66.7% accuracy. In species-rich communities, care should be taken while using echolocation calls to identify bats producing FM calls. More such call libraries of bats from other parts of India are needed for non-invasive documentation of chiropteran fauna in different biogeographic zones.

中文翻译：

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印度古吉拉特邦一些蝙蝠的回声定位呼叫

摘要 蝙蝠通过提供包括授粉、种子传播、森林更新和害虫防治在内的生态系统服务发挥着重要作用，并且还作为生物指标。在本研究中，我们为来自古吉拉特邦的 9 种蝙蝠的叫声提供了声学指南，这些蝙蝠属于 Rhinopomatidae（Rhinopoma hardwickii、Rhinopoma microphyllum）、Emballonuridae（Taphozous melanopogon、Taphozous longimanus 和 Taphozous nudiventris）、Rhinolophidaea（Rhinopidolos） Hipposideridae (Hipposideros galeritus) 和 Vespertilionidae (Scotophilus heathii, Pipistrellus ceylonicus)。判别函数分析用于使用留一法交叉验证将蝙蝠呼叫分类到物种水平。分别对恒定频率 (CF) 呼叫和调频 (FM) 呼叫进行分析。蝙蝠通过 CF 呼叫进行回声定位的成功率为 100%，而在 FM 呼叫的情况下，呼叫的分类准确率为 66.7%。在物种丰富的社区中，在使用回声定位呼叫来识别发出 FM 呼叫的蝙蝠时应该小心。需要更多这样的来自印度其他地区的蝙蝠呼叫库来对不同生物地理区域的手足类动物群进行非侵入性记录。