Social vocalizations of big brown bats vary with behavioral context.
Social vocalizations of big brown bats vary with behavioral context.
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DOI：
10.1371/journal.pone.0044550
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发表时间：
2012
期刊：
影响因子：
3.7
通讯作者：
Wenstrup JJ
中科院分区：
文献类型：
--
作者：
Gadziola MA;Grimsley JM;Faure PA;Wenstrup JJ
蝙蝠是最具群居性和发声能力的哺乳动物之一，一些物种在各种行为环境下表现出不同的音节曲目。尽管对大棕蝠（Eptesicus fuscus）的生物声纳信号进行了广泛的表征，但对成年社会发声的详细研究还没有。本文记录并分析了圈养大棕蝠在低攻击、中等攻击、高攻击和安抚四种行为环境下的社会发声和相关行为。即使在这些环境中，大棕色蝙蝠也拥有丰富的社会发声技能，使用谱图相互关联程序自动分类出18种不同的音节类型。对于每种行为语境，我们从音节声学、时间发射模式和典型音节序列方面描述了发声。情感相关的声音线索在呼叫结构中通过上下文特定的音节类型或时间发射模式的变化是明显的。我们设计了一个范例，可以唤起攻击性的声音，同时监测心率作为内部生理状态的客观测量。心率升高的幅度和持续时间的变化达到了诱发攻击的水平，证实了通过发声和行为表现评估的行为状态分类。这些结果揭示了大棕蝠之间复杂的声音通信系统，其中声音线索和呼叫结构表明呼叫者的情绪状态。
Bats are among the most gregarious and vocal mammals, with some species demonstrating a diverse repertoire of syllables under a variety of behavioral contexts. Despite extensive characterization of big brown bat (Eptesicus fuscus) biosonar signals, there have been no detailed studies of adult social vocalizations. We recorded and analyzed social vocalizations and associated behaviors of captive big brown bats under four behavioral contexts: low aggression, medium aggression, high aggression, and appeasement. Even limited to these contexts, big brown bats possess a rich repertoire of social vocalizations, with 18 distinct syllable types automatically classified using a spectrogram cross-correlation procedure. For each behavioral context, we describe vocalizations in terms of syllable acoustics, temporal emission patterns, and typical syllable sequences. Emotion-related acoustic cues are evident within the call structure by context-specific syllable types or variations in the temporal emission pattern. We designed a paradigm that could evoke aggressive vocalizations while monitoring heart rate as an objective measure of internal physiological state. Changes in the magnitude and duration of elevated heart rate scaled to the level of evoked aggression, confirming the behavioral state classifications assessed by vocalizations and behavioral displays. These results reveal a complex acoustic communication system among big brown bats in which acoustic cues and call structure signal the emotional state of a caller.
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DOI：
10.1098/rspb.1998.0286
发表时间：
1998-02-07
影响因子：
4.7
作者：
Boughman, JW
通讯作者：
Boughman, JW
影响因子：
1.7
作者：
ESSER, KH
通讯作者：
ESSER, KH
影响因子：
2.4
作者：
Bastian, Anna;Schmidt, Sabine
通讯作者：
Schmidt, Sabine
影响因子：
1.7
作者：
DAVIS, WH;BARBOUR, RW;HASSELL, MD
通讯作者：
HASSELL, MD
影响因子：
2.3
作者：
BARCLAY, RMR;FENTON, MB;THOMAS, DW
通讯作者：
THOMAS, DW