Croaking’s activities of Amnirana albolabris (Hallowell, 1856) a frog from Banco National Park (Côte d’Ivoire)

Abstract

The croaking activities of Amnirana albolabris were studied in Banco National Park from February 2018 to January 2019. The songs were acoustically counted then, eight croaks were recorded in a male using a Techno device and analyzed sing the Sounder software 0.9.6. The see wave R package was needed to highlight the graphics in the waveform. In this species, croaking usually begins at 3 p.m. and ends at 9 a.m. The rhythm of croaking activity is early during the heavy rainy season (6 p.m.) and peaks at 9 p.m. during the short dry season and the short rainy season. The peak is reached at 24 hours during the great dry season. The average duration of croaks is 3.197 ± 2.32s. The recorded average fundamental frequency is 3960.937 ± 4133.42 Hz. The average dominant frequency reaches 1980.47 ± 2066.72 Hz and the recorded average minimum frequency is 3890.625 ± 4113.72 Hz. As for the maximum frequency average, it is 4007.81 ± 4154.6 Hz. The average duration between intervals is 6.03 ± 2.25s and the notes were repeated in each croaking between 0 and 5 times.