Sexual dimorphism of acoustic signals in the oriental white stork: Non-invasive identification of sex in birds
Sexual dimorphism of acoustic signals in the oriental white stork: Non-invasive identification of sex in birds
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DOI：
10.2108/zsj.21.817
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发表时间：
2004-08-01
影响因子：
0.9
通讯作者：
Kimura, T
中科院分区：
文献类型：
--
作者：
Eda-Fujiwara, H;Yamamoto, A;Kimura, T
鸟类性别鉴定对于濒危物种的圈养繁殖具有重要意义。在濒危物种东方白色鹳（Ciconia boyciana）中，两性都能通过上下颚的碰撞发出声音，从而产生一种被称为“咔嗒”的声音信号。我们研究了男性和女性的结构，以确定是否是性别二态性。两种性别的咔嗒声的声学结构被证明是二态的基本频率方面，女性咔嗒声有较高的基本频率。基频与喙长呈显著正相关，表明喙的形态有助于咔嗒声的两性异形。该方法不需要捕获鸟类，仅通过声音信号就可以进行鸟类性别鉴定，是一种非侵入性的鸟类性别鉴定方法，可用于鸟类的生态和保护研究。
Identification of the sex of birds is important for captive breeding of endangered species. In the oriental white stork (Ciconia boyciana), an endangered species, both sexes produce an acoustic signal called "clatter" by rattling their mandibles together to generate sounds. We examined the structure of male and female clatter to determine whether clatter is sexually dimorphic. The acoustic structure of the clatter of the two sexes proved to be dimorphic with respect to the fundamental frequency; female clatter had higher fundamental frequencies. The fundamental frequency correlated significantly and positively with bill length, suggesting that bill morphology contributes to the sexual dimorphism of clatter. Sexing can be done by acoustic signals without capturing birds, and thus is useful as a non-invasive sexing method for ecological and conservation studies of birds.