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Selective Eavesdropping Behaviour in Three Neotropical Bat Species

机译：三种新热带蝙蝠物种的选择性窃听行为

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摘要

Knowledge of interspecies information transfer in mammals is scarce compared with other taxa. We investigated whether eavesdropping on echolocation calls of bats may be used by sympatric bats with similar feeding ecology. We performed playback experiments with three free-ranging neotropical bat species, broadcasting search phase calls or feeding buzzes of conspeci?cs and heterospeci?cs belonging either to the same or to another bat family. Both the greater ?shing bat Noctilio leporinus and the lesser bulldog bat Noctilio albiventris (Noctilionidae) reacted with repeated approaches in response to playbacks of search phase calls and feeding buzzes from conspeci?cs and also to congeneric feeding buzzes. Noctilio leporinus also were attracted by search phase calls from its sister species N. albiventris. In contrast, the sac-winged bat Saccopteryx bilineata (Emballonuridae) did not react to any playback sequences presented. Our results support the existence of eavesdropping behaviour for both species of Noctilio. We suggest that information transfer via eavesdropping may depend mainly on species-speci?c traits, including foraging style and social behaviour (territoriality, group foraging), and on distribution and density of prey. Call design had only a minor in?uence on the reaction.
机译：与其他类群相比，哺乳动物间种间信息传递的知识很少。我们调查了窃听蝙蝠的回声定位呼叫是否可以被具有相似喂养生态的同伴蝙蝠使用。我们用三种自由放养的新热带蝙蝠种类进行了播放实验，广播搜索阶段的声音，或者喂食属于同一蝙蝠家族或另一蝙蝠家族的特定物种和异种物种的嗡嗡声。较大的捕捞蝙蝠夜蛾夜蛾和较小的斗牛犬蝙蝠夜蛾夜蛾（Noctilionidae）都对重复搜索做出了反应，以响应搜索阶段的回放和特定目标的嗡嗡声，以及同类的嗡嗡声。夜蛾夜蛾也被其姊妹物种N. albiventris的搜寻阶段召唤所吸引。相反，contrast翅蝙蝠Saccopteryx bilineata（Emballonuridae）对出现的任何回放序列均无反应。我们的研究结果支持了夜蛾两种物种的窃听行为。我们建议通过窃听进行的信息传递可能主要取决于物种的特定特征，包括觅食方式和社会行为（地域性，群体觅食），以及猎物的分布和密度。呼叫设计对响应的影响很小。

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