Developmental changes in ultrasonic vocalizations by infant Japanese echolocating bats,Pipistrellus abramus
作者： Shizuko Hiryu , Hiroshi Riquimaroux
DOI: 10.1121/1.3632044
关键词: Human echolocation 、 Bioacoustics 、 Short duration 、 Audiology 、 Acoustics 、 Sound Spectrography 、 Infant Vocalization 、 Biology 、 Pipistrellus
摘要: Developmental changes in vocalizations by Pipistrellus abramus were investigated during the first post-natal month. Vocalizations pups on day of birth frequency-modulated ultrasounds from 30.0 ± 4.0 kHz to 19.3 1.9 with multiple harmonics. The terminal frequency second harmonic (TF(2)) pup corresponded that fundamental (TF(1)) adult bats (41.4 2.6 kHz), suggesting can be easily detected mother. In addition, there are two types infant vocalization: short duration echolocation precursor and long isolation calls, which showed separate developmental patterns over time.
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