Duet Vocalizations among Different Populations of Sulawesi Tarsiers

Author: Nietsch A.

Source: International Journal of Primatology, Volume 20, Number 4, August 1999 , pp. 567-583(17)

Publisher: Springer

Abstract:

A most conspicuous vocal behavior of Sulawesi tarsiers is the loud calls that males and females coordinate into duets. Differences in the acoustic structure of this display relate to specific differentiation in Tarsius spectrum and T. dianae. More recent studies on dueting behavior indicated the existence of a new species of tarsiers on the Togian Islands in Tomini Bay. I analyzed the duet calls of the Togian tarsier to assess the differences in acoustic structure of duet calls between this putative new species and T. spectrum or T. dianae. Discriminant function analysis revealed that Togian tarsiers, T. spectrum and T. dianae, are clearly separated by acoustic characteristics in songs. The degree of separation of the Togian tarsiers from the mainland species support them being a distinct species.

Keywords: Vocal duet; Tarsius spectrum; Tarsius dianae; Togian tarsiers

Language: English

Document Type: Research article

Affiliations: 1: Institut für Verhaltensbiologie, Freie Universität Berlin, Haderslebener Str. 9, D-12163 Berlin, Germany

Publication date: 1999-08-01

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