, Volume 47, Issue 4, pp 393–396 | Cite as

Diurnal distribution of loud calls in sympatric wild indris (Indri indri) and ruffed lemurs (Varecia variegata): implications for call functions

  • Thomas GeissmannEmail author
  • Thomas Mutschler
Short Communication


We carried out a short study on the diurnal call distribution of two sympatric lemurs in the Réserve Naturelle Intégrale Zahamena (eastern Madagascar). Whereas indris (Indri) song bouts were clearly concentrated in the early morning hours, the roar/shriek choruses of ruffed lemurs (Varecia) exhibited a much more even distribution throughout the day. These differences in distribution pattern support earlier claims that indri song bouts are more likely to serve territorial functions, whereas ruffed lemur loud calls may serve both spacing and/or alarm call functions.


Calls Diurnal distribution Function of calls Song Madagascar 



We thank the Direction des Eaux et Forêts for permission to conduct research in the Réserve Naturelle Intégrale Zahamena and Mamirina Rakotorahalany Josoa, Rajaonarivo Aimé Bernard and M. Ratodymanana for assistance in the field. Two anonymous reviewers kindly read and commented on our manuscript. T.G. was supported by a grant from the Deutsche Forschungsgemeinschaft.


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Copyright information

© Japan Monkey Centre and Springer-Verlag 2006

Authors and Affiliations

  1. 1.Anthropological InstituteUniversity Zürich-IrchelZürichSwitzerland

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