The Gibbons pp 91-110 | Cite as

Individual and Geographical Variability in the Songs of Wild Silvery Gibbons (Hylobates Moloch) on Java, Indonesia

  • Robert Dallmann
  • Thomas Geissmann
Part of the Developments in Primatology: Progress and Prospects book series (DIPR)


The present study focuses on the great-call phrases of wild female silvery gibbons (Hylobates moloch). The aim of this study is to answer the following questions: (1) To what degree is great-call variability within a species useful for both individual and population identification? (2) Do vocal differences among local populations correspond to geographical distances or do they show evidence for genetic isolation among populations? (3) Can vocal data be used to test the validity of subspecific taxon boundaries suggested by previously reported genetic data?

Compared with bird vocalizations, primate vocalizations, in general, and inter-population differences in these vocalizations, in particular, are rarely analyzed (but see Green 1975; Hodun et al. 1981). As Hodun et al. (1981) point out, however, there are several good reasons for studying vocalizations in more than one population of a species. Firstly, vocal differences can be used to assess affiliations among taxa and to...


Discriminant Analysis Typical Song Discriminant Function Analysis Song Repertoire Directional Microphone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



Additional tape-recordings used in the present study were kindly made available by Dr. Markus Kappeler and Dr. Björn Merker. We thank four anonymous reviewers for commenting on an earlier version of the manuscript.


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© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  1. 1.Department of NeurobiologyUniversity of Massachusetts Medical SchoolWorcesterUSA
  2. 2.Anthropological Institute, University Zürich-IrchelZurichSwitzerland

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