Heterospecific Acoustic Interference: Effects on Calling in Oophaga pumilio |
| |
Authors: | Wong Stefanie Parada Humberto Narins Peter M |
| |
Institution: | Department of Ecology and Evolutionary Biology, University of California, Los Angeles, California 90095, U.S.A.;Department of Physiological Science, 621 Charles E. Young Drive South, Room LSB 4835, University of California, Los Angeles, California 90095-1606, U.S.A. |
| |
Abstract: | Call rate suppression is a common short-term solution for avoiding acoustic interference in animals. It has been widely documented between and within frog species, but the effects of non-anuran calling on frog vocalizations are less well known. Heterospecific acoustic interference on the calling of male Oophaga pumilio (formerly Dendrobates pumilio) was studied in a lowland, wet tropical forest in SE Nicaragua. Acoustic playback experiments were conducted to characterize the responses of O. pumilio males to interfering calls of cicadas, two species of crickets, and a sympatric dendrobatid frog, Phyllobates lugubris. Call rate, call bout duration, percent of time calling, dominant frequency, and latency to first-call were analyzed. Significant call rate suppression was observed during all stimulus playbacks, yet no significant differences were found in spontaneous call rates during pre- and postplayback trials. Dominant frequency significantly decreased after P. lugubris playback and first-call latency significantly decreased in response to both cicada and tree cricket playbacks. These results provide robust evidence that O. pumilio males can dynamically modify their calling pattern in unique ways, depending on the source of the heterospecific acoustic interference. |
| |
Keywords: | amphibian call rate suppression Dendrobatidae playback experiments vocalizations |
本文献已被 PubMed 等数据库收录! |
|