Does true syntax or simple auditory object support the role of skylark song dialect?
Does true syntax or simple auditory object support the role of skylark song dialect?
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DOI：
10.1016/j.anbehav.2013.09.019
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发表时间：
2013-12-01
期刊：
影响因子：
2.5
通讯作者：
Aubin, Thierry
中科院分区：
文献类型：
--
作者：
Briefer, Elodie F.;Rybak, Fanny;Aubin, Thierry
鸟鸣和人类语言之间有许多相似之处，包括声学单位的特定时间安排和方言的存在。在动物交流中，现有声学单位的时间顺序的修改很少与信息内容的变化明确联系起来，特别是在自然环境中。在这里，我们表明，鸟鸣单位（“音节”）的组织序列支持云雀社区内的个体间的关系。我们操纵的时间安排的歌曲方言变体（“共享短语”）的云雀，Alauda arvensis，一个非常大的曲目的音节和复杂的歌曲的鸣禽。当在野外进行回放实验时，云雀能够感知音节顺序的细微差异。共享短语内的音节顺序的修改改变了信息内容从“组成员”到“不熟悉的个人”，并引起更积极的反应比共享短语与保留的音节安排。共享短语往往不同的个人之间的数量连续重复相似的音节类型，但非常一致的音节类型排序。我们的研究结果表明，云雀不仅依赖于共享短语的音节类型的组成来识别组成员，而且依赖于音节类型排序。共享的短语可以被鸟类感知为嵌入在歌曲中的“听觉对象”。或者，鸟类可能会使用语法规则来识别不正确的短语，这些规则控制着组成它们群体共享的短语的音节序列。我们的分析显示，短语长度的个体间差异与一致的音节类型排序相关，这表明后一种假设更有可能。我们的研究结果表明，鸟类感知破坏的自然时间模式的歌曲单位，这种时间模式是行为上的显着，并携带信息。(C)2013年，动物行为研究协会。由爱思唯尔有限公司出版。保留所有权利。
Parallels between birdsong and human language are numerous and include particular temporal arrangements of acoustic units and the existence of dialects. In animal communication, modifications of the temporal ordering of existing acoustic units have rarely been clearly linked with changes in information content, particularly in a natural environment. Here, we show that the organization of birdsong units ('syllables') in sequences supports interindividual relationships within skylark communities. We manipulated the temporal arrangement of song dialect variants ('shared phrases') in the skylark, Alauda arvensis, a songbird with a very large repertoire of syllables and complex song. When tested with playback experiments performed in the field, skylarks were able to perceive subtle differences in the ordering of syllables. Modifications of the syllable ordering within shared phrases changed the information content from 'group member' to 'unfamiliar individual' and induced more aggressive reactions than shared phrases with a preserved syllable arrangement. Shared phrases often varied between individuals in the number of successive repetitions of similar syllable types, but were very consistent in terms of syllable type ordering. Our results indicate that skylarks rely not simply on the composition in syllable types of shared phrases to recognize group members, but on syllable type ordering. Shared phrases could be perceived by birds as 'auditory objects' embedded within songs. Alternatively, birds might identify incorrect phrases using grammatical rules governing the succession of syllables composing the phrases shared by their group. The presence of between-individual variation in phrase length, associated with consistent syllable type ordering revealed by our analysis, suggests that the latter hypothesis is more likely. Our results show that birds perceive disruptions in the natural temporal pattern of song units, and that this temporal pattern is behaviourally salient and carries information. (C) 2013 The Association for the Study of Animal Behaviour. Published by Elsevier Ltd. All rights reserved.