Bioacoustic analysis of frog calls from northeast India |
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Authors: | Debjani Roy Andreas Elepfandt |
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Institution: | (1) Institute of Self Organising Systems and Biophysics, North Eastern Hill University, Mawkynroh-Umshing, Mawlai, 793 022 Shillong, India;(2) Department of Biology, University of Konstanz, D-78434 Konstanz, Germany |
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Abstract: | Mating calls of three frog species abundant in northeast IndiaRana tigerina,Rana cyanophlyctis andRana limnocharis were recorded in the fields of Assam and Meghalaya during their breeding season (July-August, 1991). The calls were analysed
for their temporal and spectral characters. They were species specific, with distinct call duration and call period, number
of pulses per call and interpulse interval, and dominant frequency and frequency domain. A comparison of the mating calls
ofRana cyanophlyctis with those of the siblingRana ehrenbergi from Yemen showed differences in their temporal and spectral characters, supporting the suggestion that these two species
are distinct species, rather than subspecies of the same species. Differences in the temporal and spectral pattern were found
in the mating calls of morphologically alike specimens ofRana limnocharis, indicating that the present morphotypeRana limnocharis in northeast India is composed of several species. |
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Keywords: | Indian frogs frog call bioacoustic analysis taxonomy |
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