Population Differences and Acoustic Stability in Male Songs of Wild Western Black Crested Gibbons (Nomascus concolor) in Mt. Wuliang, Yunnan

Population differences and acoustic stability in male songs of the western black crested gibbon (Nomascus concolor) at Mt. Wuliang, Yunnan, were investigated using data collected over 4 years. Detectable vocal differences were found between the western and eastern populations within Mt. Wuliang. Discriminant functions calculated using the phrases recorded in 2007–2008 correctly classified phrases recorded in 2009, and discriminant functions produced from phrases recorded in 2007–2009 could correctly classify phrases recorded in 2010 for 4 of 5 males. Results showed that the male songs of western black crested gibbons remain relatively stable over years. In light of the acoustic individuality in male songs of this gibbon species, which has recently been proved, and the acoustic stability shown in this research, we suggest that the song of male individuals may be useful in monitoring individuals or family groups of this species.

[1]  Xuelong Jiang,et al.  Status and distribution pattern of black crested gibbon (Nomascus concolor jingdongensis) in Wuliang Mountains, Yunnan, China: implication for conservation , 2006, Primates.

[2]  R. L. Tilson,et al.  Individuality in the Female Songs of Wild Kloss’ Gibbons (Hylobates klossii) on Siberut Island, Indonesia , 1985 .

[3]  T. Geissmann.  Duet‐splitting and the evolution of gibbon songs , 2002, Biological reviews of the Cambridge Philosophical Society.

[4]  D. Weary,et al.  Use of male blue monkey “Pyow” calls for long‐term individual identification , 1992, American journal of primatology.

[5]  Folia Primatologica,et al.  Inheritance of Song Parameters in the Gibbon Song, Analysed in 2 Hybrid Gibbons (Hylobates pileatus , 2002 .

[6]  I. Volodin,et al.  Examination of pair-duet stability to promote long-term monitoring of the endangered red-crowned crane (Grus japonensis) , 2009, Journal of Ethology.

[7]  J. Newman,et al.  Individuality and stability of isolation peeps in squirrel monkeys , 1979, Animal Behaviour.

[8]  R. Dooling,et al.  Vocal plasticity in budgerigars (Melopsittacus undulatus): evidence for social factors in the learning of contact calls. , 1994, Journal of comparative psychology.

[9]  Xuelong Jiang,et al.  [Sonogram structure and timing of duets of western black crested gibbon in Wuliang Mountain]. , 2010, Dong wu xue yan jiu = Zoological research.

[10]  G. Cowlishaw.  Song Function in Gibbons , 1992 .

[11]  T. Geissmann,et al.  The relationship between duet songs and pair bonds in siamangs, Hylobates syndactylus , 2000, Animal Behaviour.

[12]  T. Geissmann,et al.  Individuality in the female songs of wild Silvery Gibbons (Hylobates moloch) on Java, Indonesia , 2001 .

[13]  T. Geissmann,et al.  Vocal Diversity and Taxonomy of Nomascus in Cambodia , 2006, International Journal of Primatology.

[14]  E. H. Haimoff,et al.  Individuality in the songs of wild agile gibbons (Hylobates agilis) of Peninsular Malaysia , 1985, American journal of primatology.

[15]  Clive K. Catchpole,et al.  The stability of the vocal signature in phee calls of the common marmoset, Callithrix jacchus , 1993, American journal of primatology.

[16]  D. Chivers,et al.  COVARVARIATION IN THE GREAT CALLS OF REHABILITANT AND WILD GIBBONS (HYLOBATES ALBIBARBIS) , 2007 .

[17]  Xuelong Jiang,et al.  Singing behavior and singing functions of black‐crested gibbons (Nomascus concolor jingdongensis) at Mt. Wuliang, central Yunnan, China , 2009, American journal of primatology.

[18]  J. French,et al.  Individuality but not Stability in Marmoset Long Calls , 2010 .

[19]  J. Ruppell.  Vocal Diversity and Taxonomy of Nomascus in Central Vietnam and Southern Laos , 2010, International Journal of Primatology.

[20]  W. Brockelman,et al.  Inheritance of stereotyped gibbon calls , 1984, Nature.

[21]  Xuelong Jiang,et al.  Altitudinal Ranging of Black-Crested Gibbons at Mt. Wuliang, Yunnan: Effects of Food Distribution, Temperature and Human Disturbance , 2010, Folia Primatologica.

[22]  T. Geissmann.  Inheritance of Song Parameters in the Gibbon Song, Analysed in 2 Hybrid Gibbons (Hylobates pileatus × H. lar) , 1984 .

[23]  Thomas Geissmann,et al.  Individuality in male songs of wild black crested Gibbons (Nomascus concolor) , 2011, American journal of primatology.

[24]  Chisako Oyakawa,et al.  Acoustic features contributing to the individuality of wild agile gibbon (Hylobates agilis agilis) songs , 2007, American journal of primatology.

[25]  J T Marshall,et al.  Gibbons and Their Territorial Songs , 1976, Science.