普通长翼蝠回声定位声波的地理进化研究

here is apparent geographic variation in intraspecific acoustic signals of mammals, especially in the Chiroptera which depend mainly upon acoustic signals to navigate and locate at night, but both the cause and the significance of geographic variation in acoustic signals remains poorly understood. In this study, the patterns of geographic variation of the echolocation calls in Miniopterus fuliginosus were investigated in a large geographic scale by recording their echolocation calls. Additionally, we also estimated factors affecting geographic variation of echolocation calls in M. fuliginosus by integrating corresponding geographic, climatic and morphological data. The results showed that there were significant differences in start frequency, end frequency and peak frequency of echolocation calls in M. fuliginosus among colonies. No significant correlation between the forearm length difference and the acoustic Euclidean distance could be found, manifesting body size of M. fuliginosus does not strongly constraint geographic variation of echolocation calls in bats. Moreover, climate conditions did not correlate with significantly acoustic Euclidean distance. However, the geographic distance correlated significantly with the acoustic Euclidean distance, indicating that cultural drift may promote the geographic variation of echolocation calls in M. fuliginosus.