Social learning of vocal structure in a nonhuman primate?
Social learning of vocal structure in a nonhuman primate?
复制标题
非人类灵长类动物中声乐结构的社会学习？
DOI：
10.1186/1471-2148-11-362
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发表时间：
2011-12-16
影响因子：
3.4
通讯作者：
Zuberbühler K
中科院分区：
文献类型：
--
作者：
Lemasson A;Ouattara K;Petit EJ;Zuberbühler K
非人类灵长类动物的交流被认为与人类的语言有着根本的不同，主要是由于它们在发声控制方面的巨大差异。与一些海洋哺乳动物和鸟类相比，非人类灵长类动物缺乏这些能力尤其引人注目，这在某种程度上产生了进化难题。人类能够自主控制发声和学习他人发声的生物学根源和潜在的进化压力是什么？一种假设是，这种能力是从人类祖先的阶段逐渐进化而来的，类似于现代灵长类动物的声音行为。支持这一点的研究来自于记录不同灵长类物种有限的声音灵活性和趋同性的研究，通常是在社交互动中使用的声音。然而，这些模式背后的机制目前尚不清楚。具体来说，很难排除基于遗传相关性的解释，这表明这种声音的灵活性可能不是社会学习的结果。为了解决这一点，我们比较了自由放养的坎贝尔猴的声音相似性的程度，作为他们的社会纽带和遗传相关性的函数。我们计算了三个不同的指数来比较呼叫频率轮廓之间的相似性，梳理相互作用的持续时间和伴侣之间基于微卫星的遗传相关性。我们发现一个显着的正相关关系，债券的强度和声学的相似性是独立的遗传相关性。遗传因素决定了灵长类动物特定的叫声，而社会因素可以影响某些叫声类型的精细结构。这一发现符合更普遍的假设，即人类的语言是从早期的灵长类动物的声音交流逐渐进化而来的。
Non-human primate communication is thought to be fundamentally different from human speech, mainly due to vast differences in vocal control. The lack of these abilities in non-human primates is especially striking if compared to some marine mammals and bird species, which has generated somewhat of an evolutionary conundrum. What are the biological roots and underlying evolutionary pressures of the human ability to voluntarily control sound production and learn the vocal utterances of others? One hypothesis is that this capacity has evolved gradually in humans from an ancestral stage that resembled the vocal behavior of modern primates. Support for this has come from studies that have documented limited vocal flexibility and convergence in different primate species, typically in calls used during social interactions. The mechanisms underlying these patterns, however, are currently unknown. Specifically, it has been difficult to rule out explanations based on genetic relatedness, suggesting that such vocal flexibility may not be the result of social learning. To address this point, we compared the degree of acoustic similarity of contact calls in free-ranging Campbell's monkeys as a function of their social bonds and genetic relatedness. We calculated three different indices to compare the similarities between the calls' frequency contours, the duration of grooming interactions and the microsatellite-based genetic relatedness between partners. We found a significantly positive relation between bond strength and acoustic similarity that was independent of genetic relatedness. Genetic factors determine the general species-specific call repertoire of a primate species, while social factors can influence the fine structure of some the call types. The finding is in line with the more general hypothesis that human speech has evolved gradually from earlier primate-like vocal communication.
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影响因子：
9.2
作者：
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通讯作者：
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