Males increase call frequency, not intensity, in response to noise, revealing no Lombard effect in the little torrent frog.

ABSTRACT: Noise is one of the main factors that can influence the processes of sound communication across a wide range of animal groups. Although the effects of ambient noise on animal communication, including anthropogenic noise, have received increasing attention, few studies have examined changes in the fine structure of acoustic signals produced by vocalizing species in constantly noisy environments. Here, we used natural recordings to determine the associations between stream noise and call parameters in the little torrent frog (Amolops torrentis). We also used playbacks of stream noise recorded in natural habitats and playbacks of white noise to examine how male vocal signals change with increasing noise levels. The results show that noise intensity has a significant effect on male call

SUBMITTER: Zhao L 

PROVIDER: S-EPMC6303699 | biostudies-literature | 2018 Dec

REPOSITORIES: biostudies-literature