Possible role of mother-daughter vocal interactions on the development of species-specific song in gibbons.
Possible role of mother-daughter vocal interactions on the development of species-specific song in gibbons.
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DOI：
10.1371/journal.pone.0071432
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Masataka N
中科院分区：
文献类型：
--
作者：
Koda H;Lemasson A;Oyakawa C;Rizaldi;Pamungkas J;Masataka N
母婴声音互动在人类语言的发展中起着至关重要的作用。然而，对非人灵长类动物发声发育过程中母亲的作用知之甚少。在这里，我们报告的第一个证据，母亲和女儿的声音相互作用，有助于声乐发展的长臂猿，唱歌和一夫一妻制的猿类。长臂猿以其在配偶之间的物种特异性二重唱而闻名，但对两代人之间的二重唱在长臂猿歌曲发展中的作用知之甚少。我们观察到唱歌的自由放养的母亲和他们的亚成年女儿之间的相互作用之前，移民。女儿们以不同的速度与母亲同时歌唱。首先，我们观察到女儿之间的显着声学变化。母亲和女儿之间的共唱率与歌曲同步的时间精度呈负相关。此外，与其他成年女性的歌曲相比，与母亲合唱较少的女儿的歌曲在声学上更类似于母亲的歌曲。据报道，所有变量都受到情侣社交关系的影响。因此，这些相关性将通过母亲-女儿的社会关系，这将是在女儿的发展修改。在这里，我们假设的女儿谁共同唱不太经常，以及同步，并收敛声学与母亲的声学模式将在一个更先进的阶段，社会独立的亚成年女性移民之前。第二，我们观察到母亲和女儿之间的声音匹配时，共同唱歌，这表明短期的声乐灵活性。第三，我们发现，母亲们在合唱时比单独唱歌时更能将歌曲调整到一种刻板的模式。这种声音的调整是更强的母亲与女儿谁共同唱less. These结果表明存在社会介导的声乐灵活性，在gills亚成人和成人，母亲和女儿共同唱歌的相互作用，可能会提高声乐发展。更多的比较工作，特别是纵向和实验，现在需要澄清母亲的角色在歌曲的发展。
Mother-infant vocal interactions play a crucial role in the development of human language. However, comparatively little is known about the maternal role during vocal development in nonhuman primates. Here, we report the first evidence of mother-daughter vocal interactions contributing to vocal development in gibbons, a singing and monogamous ape species. Gibbons are well known for their species-specific duets sung between mates, yet little is known about the role of intergenerational duets in gibbon song development. We observed singing interactions between free-ranging mothers and their sub-adult daughters prior to emigration. Daughters sang simultaneously with their mothers at different rates. First, we observed significant acoustic variation between daughters. Co-singing rates between mother and daughter were negatively correlated with the temporal precision of the song’s synchronization. In addition, songs of daughters who co-sang less with their mothers were acoustically more similar to the maternal song than any other adult female’s song. All variables have been reported to be influenced by social relationships of pairs. Therefore those correlations would be mediated by mother-daughter social relationship, which would be modifiable in daughter’s development. Here we hypothesized that daughters who co-sing less often, well-synchronize, and converge acoustically with the maternal acoustic pattern would be at a more advanced stage of social independence in sub-adult females prior to emigration. Second, we observed acoustic matching between mothers and daughters when co-singing, suggesting short-term vocal flexibility. Third, we found that mothers adjusted songs to a more stereotyped pattern when co-singing than when singing alone. This vocal adjustment was stronger for mothers with daughters who co-sang less. These results indicate the presence of socially mediated vocal flexibility in gibbon sub-adults and adults, and that mother-daughter co-singing interactions may enhance vocal development. More comparative work, notably longitudinal and experimental, is now needed to clarify maternal roles during song development.
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影响因子：
8.2
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