Abstract
The advertisement call of Macrogenioglottus alipioi was firstly described 40 years ago from Santa Teresa municipality, Espirito Santo state, Brazil. With the advancement of digital recording and call analysis in bioacoustics, we redescribe the advertisement call of M. alipioi from a population close to its type locality, municipality of Urucuca, Bahia. Additionally, we describe the release call and provide morphometric data. The advertisement call of M. alipioi consists of a simple pulsatile structured call, which can be emitted alone or in a series of 4–9 calls. The mean call duration is 0.46 ± 0.04 s (0.35–0.55 s) and dominant frequency ranges from 344.5 to 430.7 Hz (366.2 ± 37.56 Hz). The release call of M. alipioi usually has a pulsatile spindle-shaped waveform with harmonics and sidebands in the spectrum. The mean call duration is 0.175 s ± 0.067 (0.032–0.314 s) and dominant frequency ranges from 387.60 to 559.90 Hz (420.99 Hz ± 30.63 Hz). Males (95.3 ± 5.5 mm) and females (99.6 ± 7.8 mm) do not differ in body length, although they present significant differences related to morphometric variables of the hind limbs. We provide new bioacoustical and morphometric data of M. alipioi from a population close to its type locality. This information can help future studies that aim to define the range of a species that is widely distributed in the Atlantic Forest.
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