Acoustic features contributing to the individuality of wild agile gibbon (Hylobates agilis agilis) songs

Chisako Oyakawa, Hiroki Koda, Hideki Sugiura

    研究成果: Article査読

    28 被引用数 (Scopus)

    抄録

    We examined acoustic individuality in wild agile gibbon Hylobates agilis agilis and determined the acoustic variables that contribute to individual discrimination using multivariate analyses. We recorded 125 female-specific songs (great calls) from six groups in west Sumatra and measured 58 acoustic variables for each great call. We performed principal component analysis to summarize the 58 variables into six acoustic principal components (PCs). Generally, each PC corresponded to a part of the great call. Significant individual differences were found across six individual gibbons in each of the six PCs. Moreover, strong acoustic individuality was found in the introductory and climax parts of the great call. In contrast, the terminal part contributed little to individual identification. Discriminant analysis showed that these PCs contributed to individual discrimination with high repeatability. Although we cannot conclude that agile gibbon use these acoustic components for individual discrimination, they are potential candidates for individual recognition.

    本文言語English
    ページ(範囲)777-790
    ページ数14
    ジャーナルAmerican Journal of Primatology
    69
    7
    DOI
    出版ステータスPublished - 2007 7 1

    ASJC Scopus subject areas

    • 生態、進化、行動および分類学
    • 動物科学および動物学

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