Repository Universitas Pakuan

Detail Karya Ilmiah Dosen


Judul : Female reciprocal calling of pearly tree frog (Nyctixalus margaritifer Boulenger, 1882) in West Java, Indonesia
Abstrak :

Less than 1% of female anurans vocalize. In some species, females emit calls as a response to male calls. This behaviour has been referred to as a reciprocal call. As most female frogs respond to male calls only when they are at the peak of reproduction, experimental playback becomes a beneficial method for revealing their acoustic signal. Nevertheless, the study of female calls often receives less attention from researchers because the behaviour is challenging to observe . However, a reference collection is needed for taxonomy purposes to provide clear guidelines for species identification or delimitation .Based on the results of the playback experiment, the female frogs recognized and responded to the conspecific acoustic stimuli we provided. We recorded 28 response calls emitted after the call of note groups consisting of 10 notes with a response duration of 1.7 ± 0.8 (0.09–4.44 s) and 34 calls emitted after note groups consisting of 12 notes with a response duration of 2.43 ± 1.9 (0.56–8 s). Regarding the number of call responses, these results prove that the female N. margaritifer can emit calls and be attracted to long and constant male calls, as commonly observed in other anurans (Faggioni et al. 2017).  The female calls had unpulsed characteristics consisting of numerous harmonics within a sparse spectrum , which is similar to the note type in call of a male N. margaritifer recorded by Michael Ready and male N. pictus. A total of 36 calls exhibited a dominant frequency modulation of 3.57 ± 2.67 (1.1–11.16 Hz/ms),
while 25 calls had an index modulation of 1.22 ± 0.21 (1.0–1.6). The results indicate that the female frogs consistently maintained their calls with amplitude modulation, dominant frequency modulation, or both. Nevertheless, the limitations of this study were that we only obtained recordings from four females. Therefore, future studies with representative samples are needed to explore the acoustical signal and vocalization in the female N. margaritifer.



Tahun : 2024 Media Publikasi : Jurnal Internasional
Kategori : Jurnal No/Vol/Tahun : 5410 / 2 / 2024
ISSN/ISBN : 1175-5326
PTN/S : Universitas Pakuan Program Studi : BIOLOGI
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