关键词: 普通长翼蝠福建亚种, 回声定位声波, 不同行为状态

Abstract: Miniopterus schreibersii parvipes is one of the local subspecies of China and the echolocation calls were distinct fromother species'. By analyzing the echolocation calls of the bats at different states , it was concluded that the echolocation calls were markedly different at different states , so that the bats could adapt to the different flying styles , foraging strategies and the body size of insects. The echolocation calls were recorded with Ultrasound Detector (D980 , ULTRASOUND DETECTOR , Pettersson Elektronik AB , Sweden). The sound spectrograms (frequency-time spectrograms) and the power spectra (intensity-frequency spectra) were analyzed by using Batsound 3.10 (Pettersson Elektronik AB , Sweden). The parameters included pulse duration , interpulse interval (the time from one pulse ending to the next one beginning) , dominant frequency , starting frequency of 1st harmonic and the terminal frequency of 1st harmonic. The echolocation calls were FM signals with 1 - 2 harmonics. The dominant frequency of calls was 49.35 ±4.24 kHz. The pulse duration of one complete sound was 3.46 ±1.63 ms , and the interpulse interval was 96.09 ±33.84 ms. The duty cycle is 3.5 %. The echolocation calls of Miniopterus schreibersii parvipes at 3 different states were analyzed by One-Way ANOVA of SPSS 11.5. The pulse durations of the bats during flying and holding were shorter than those during hanging and the interpulse interval during hanging was the shortest of 3 different states , while the dominant frequency during flying was the highest. Bats would face more complex environment and distinguish much more barriers when they were flying , so they use echolocation calls with short pulse duration and high dominant frequency to fly agilely.

Key words: Miniopterus schreibersii parvipes, Echolocation calls, Different activity states