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首页> 外文期刊>The Journal of the Acoustical Society of America >Developmental changes in ultrasonic vocalizations by infant Japanese echolocating bats, Pipistrellus abramus
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Developmental changes in ultrasonic vocalizations by infant Japanese echolocating bats, Pipistrellus abramus

机译:婴儿日本回声定位蝙蝠Pipistrellus abramus在发声方面的发展变化

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摘要

Developmental changes in vocalizations by Pipistrellus abramus were investigated during the first post-natal month. Vocalizations by pups on the day of birth were frequency-modulated ultrasounds from 30.0 4.0 kHz to 19.3 1.9 kHz with multiple harmonics. The terminal frequency of the second harmonic (TF _2) of pup vocalizations corresponded to that of the fundamental (TF_1) in adult bats (41.4 2.6 kHz), suggesting that pup vocalizations can be easily detected by the mother. In addition, there are two types of infant vocalization: short duration echolocation precursor and long duration isolation calls, which showed separate developmental patterns over time.
机译:在出生后的头一个月内,对Pipistrellus abramus的发声变化进行了研究。幼崽在出生当天发出的声音是频率从30.0 4.0 kHz到19.3 1.9 kHz的具有多个谐波的超声。幼崽发声的二次谐波(TF _2)的终末频率与成年蝙蝠的基频(TF_1)的终末频率(41.4 2.6 kHz)相对应,这表明母亲可以很容易地检测出幼崽发声。此外,婴儿发声有两种类型:短时回声定位前体音和长时隔离声,它们随时间呈现出不同的发展模式。

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