Evidence for cumulative cultural evolution in bird song.

Evidence for cumulative cultural evolution in bird song.
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鸟类鸣唱中累积文化进化的证据。

DOI:
10.1098/rstb.2020.0322
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发表时间:
2022-01-31
期刊:
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子:
--
通讯作者:
Lachlan RF
Lachlan RF
中科院分区:
其他
文献类型:
--
作者:
Williams H;Lachlan RF

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在非人类动物的累积文化进化研究中,重点往往是增加现有社会习得行为形式的有效性的渐进变化,例如迁移路径的改进。在本文中,我们比较了不同物种的歌曲来描述模式的演变在声学结构的鸟鸣,并探讨了什么样的积木可能的基础上累积的文化进化的鸟鸣使用比较的方法。我们认为发生了三个步骤:第一,通过社会学习模仿独立的声音或音符;第二,形成音符类型的类别;第三,将音符类型组装成具有定义结构的序列。然后,简单的序列可以重复以形成简单的歌曲,或者与其他序列连接以形成分段的歌曲,从而增加复杂性。由于复制错误和创新,注释和排序规则的变体形式可能会出现。由于学习偏差或选择,增加信号效率,或由于文化漂移,一些变异可能在人群中建立起来。因此,鸟鸣的累积文化进化来自于认知过程,如声音模仿,记忆过程中的分类和应用于基本声学构建块的学习偏见。这篇文章是一个讨论会议的问题的一部分“集体知识的出现和累积文化的动物,人类和机器”。
In studies of cumulative cultural evolution in non-human animals, the focus is most often on incremental changes that increase the efficacy of an existing form of socially learned behaviour, such as the refinement of migratory pathways. In this paper, we compare the songs of different species to describe patterns of evolution in the acoustic structure of bird songs, and explore the question of what building blocks might underlie cumulative cultural evolution of bird song using a comparative approach. We suggest that three steps occurred: first, imitation of independent sounds, or notes, via social learning; second, the formation of categories of note types; and third, assembling note types into sequences with defined structures. Simple sequences can then be repeated to form simple songs or concatenated with other sequences to form segmented songs, increasing complexity. Variant forms of both the notes and the sequencing rules may then arise due to copy errors and innovation. Some variants may become established in the population because of learning biases or selection, increasing signal efficiency, or because of cultural drift. Cumulative cultural evolution of bird songs thus arises from cognitive processes such as vocal imitation, categorization during memorization and learning biases applied to basic acoustic building blocks. This article is part of a discussion meeting issue ‘The emergence of collective knowledge and cumulative culture in animals, humans and machines’.
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