Echolocation calls of Rhinolophus ferrumequinum at its different states

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Echolocation calls of Rhinolophus ferrumequinum at its different states

SUN Keping¹; FENG Jiang¹; JIN Longru^2,3;LIU Ying¹; WU Lei¹;LI Zhenxin¹

¹Department of Environmental Science and Engineering, Northeast Normal University, Changchun 130024, China; ²Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110015, China; ³Graduate University of Chinese Academy of Sciences, Beijing 100039, China

Received:2005-10-31 Revised:2006-03-09 Online:2006-08-10 Published:2006-08-10

Abstract

Abstract: In this study, Rhinolophus ferrumequinum was trained in a 9 m × 4 m × 4 m net room, an Ultrasound Detector Advice was used to record its echolocation calls, and the video-recordings were synchronized with acoustic recordings. The results showed that the echolocation calls of R. ferrumequinum were of (FM/) CF/FM type. The pulse duration and interpulse interval decreased abruptly when the bat approached prey items, and the terminal FM component became more dominant. Foraging buzz was emitted at the moment of capture. There were significant differences in pulse repetition rate, dominant frequency, pulse duration, interpulse interval, and duty cycle during the bat was at flying and hanging.

Key words: SUCROS, Windbreaks, Production ecology, Summer corn

SUN Keping¹; FENG Jiang¹; JIN Longru^2,3;LIU Ying¹; WU Lei¹;LI Zhenxin¹. Echolocation calls of Rhinolophus ferrumequinum at its different states[J]. cje.

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Echolocation calls of Rhinolophus ferrumequinum at its different states

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