Vertical transmission of learned signatures in a wild parrot
Vertical transmission of learned signatures in a wild parrot
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DOI：
10.1098/rspb.2011.0932
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发表时间：
2012-02-07
影响因子：
4.7
通讯作者：
Bradbury, Jack W.
中科院分区：
文献类型：
--
作者：
Berg, Karl S.;Delgado, Soraya;Bradbury, Jack W.
学习鸟鸣是一种广泛使用的动物模型，用于理解人类语言的习得。雄性鸣禽通常在生命早期的敏感时期从成年雄性那里学习歌曲，并通过唱歌来吸引配偶和保卫领土。据推测，在所有350多个鹦鹉物种中，两性个体通常在一生中学习声音信号，以满足各种各样的社会功能。尽管与人类有着有趣的相似之处，但还没有实验研究证明野生鹦鹉的声音产生是后天习得的。我们研究了接触呼叫学习的视频操纵巢的一个著名的显着人口的绿腰鹦鹉（Forpus passerinus）在委内瑞拉。幼稚的雏鸟的性别单独开发独特的联络电话在巢中，我们的实验表明，签名属性是从两个主要的照顾者。这代表了第一个实验证据的机制，潜在的社会获得的性状在野生鹦鹉种群的传输。
Learned birdsong is a widely used animal model for understanding the acquisition of human speech. Male songbirds often learn songs from adult males during sensitive periods early in life, and sing to attract mates and defend territories. In presumably all of the 350+ parrot species, individuals of both sexes commonly learn vocal signals throughout life to satisfy a wide variety of social functions. Despite intriguing parallels with humans, there have been no experimental studies demonstrating learned vocal production in wild parrots. We studied contact call learning in video-rigged nests of a well-known marked population of green-rumped parrotlets (Forpus passerinus) in Venezuela. Both sexes of naive nestlings developed individually unique contact calls in the nest, and we demonstrate experimentally that signature attributes are learned from both primary care-givers. This represents the first experimental evidence for the mechanisms underlying the transmission of a socially acquired trait in a wild parrot population.