Bioacoustic analysis of frog calls from northeast India.
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Date
1993-09
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Abstract
Mating calls of three frog species abundant in northeast India Rana tigerina,
Rana cyanophlyctis and Rana 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 of Rana cyanophlyctis
with those of the sibling Rana 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 of Rana
limnocharis, indicating that the present morphotype Rana limnocharis in northeast India is
composed of several species.
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Keywords
Indian frogs, frog call, bioacoustic analysis, taxonomy
Citation
Roy Debjani, Elepfandt Andreas. Bioacoustic analysis of frog calls from northeast India. Journal of Biosciences. 1993 Sept; 18(3): 381-393.