Bioacoustics of Ajorama balatukanis

biology_ecology · Plazi

Ecology. This species is fairly common in Barangay Lunotan where numerous males can be heard calling on tree trunks at night. As they often call while hiding on tree trunk covered with moss (and possibly under tree bark), they are not easily sighted.

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discussion · Plazi

Remarks. The calling song of this species is described here for the first time.

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distribution · Plazi

Distribution. PHILIPPINES (Mindanao Island: Gingoog City in Misamis Oriental ) Calling song (1J, 19.2°C) ( Fig. 8 ). The calling song consists of short echemes with 10–11 discrete syllables. The first 2–3 syllables tend to be of lower amplitudes; amplitude of syllable gradually increases to a maximum and stabilises. Each echeme has a duration of 0.64±0.3 s (0.59–0.67 s). The average syllable duration is 25.9±4.3 ms (19.4–37.3 ms) and average interval between consecutive syllables is 34.3±4.2 ms (22.9–41.1 ms). The frequency spectrum is pure-tonal and forms a series of harmonics, with the energy peaking at the fundamental frequency. The dominant frequency is 4.41±0.00 kHz.

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