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On distress cales of male Hemidactylus brookii parvimaculatus Deraniyagala, 1953 (Reptilia: Gekkonidae) from Sri Lanka

Author:

Dieter Gramentz

Földerichstraße 7 D-13595 Berlin, DE
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Abstract

Two types of distress calls were recorded from three male Hemidactylus brookiii parvimaculatus. One type consisted of clicks and one of a single squeak. Twelve calls were analysed. Distress calls comprising a squeak had an average length of 0.070 sec while those comprising clicks averaged 0.329 sec. The difference in length of the two types of calls was significant (P<0.05). Average maximum sound intensity of all calls was 76.9 dB and was reached between 3045 Hz and 7473 Hz (x = 4451 Hz). Maximum frequency varied from 7194 Hz to 16238 Hz having an average of 13393 Hz and the average minimum frequency was 1230 Hz. All squeak distress calls showed harmonics, whereas no harmonics occurred in calls with clicks.

Key words: Hemidactylus brookii parvimaculatus, bioacoustics, distress call, Sri Lanka.

DOI: 10.4038/tapro.v1i1.2773

TAPROBANICA, April, 2009. Vol. 01, No. 01: pp. 19-23
How to Cite: Gramentz, D., (2011). On distress cales of male Hemidactylus brookii parvimaculatus Deraniyagala, 1953 (Reptilia: Gekkonidae) from Sri Lanka. TAPROBANICA: The Journal of Asian Biodiversity. 1(1), pp.19–23. DOI: http://doi.org/10.4038/tapro.v1i1.2773
Published on 27 Jan 2011.
Peer Reviewed

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