UNDERWATER ACOUSTIC-SIGNALS OF NARWHAL (MONODON-MONOCEROS)
UNDERWATER ACOUSTIC-SIGNALS OF NARWHAL (MONODON-MONOCEROS)
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DOI：
10.1139/z78-079
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发表时间：
1978-01-01
影响因子：
1.4
通讯作者：
FISHER, HD
中科院分区：
文献类型：
--
作者：
FORD, JKB;FISHER, HD
本文分析和描述了来自加拿大巴芬岛北方独角鲸的水下声音记录。脉冲和纯音发声的频率范围略大于以前观察到的。早些时候关于独角鲸只产生窄带声音的报道得到了证实。独角鲸的脉冲似乎具有定位和通信信号的潜在功能。脉冲系列具有不规则的重复率类似于回声定位点击圈养的飞燕，并建议他们服务于类似的目的。脉冲序列有规律的变化，重复率和不同的听觉音调可能作为社会信号。一些可识别的不同脉冲音调的定期重复表明，独角鲸具有类似于其他几种齿鲸的“签名”呼叫。
Underwater sound recordings of the narwhal from northern Baffin Island [Canada] are analyzed and described. Frequency ranges of pulsed and pure tone vocalizations were somewhat greater than previously observed. An earlier report that narwhals generate exclusively narrow-band sound was confirmed. Narwhal pulses appear to have a potential function as both orientation and communication signals. Pulse series having irregular repetition rates resemble the echolocation clicks of captive delphinids, and it is suggested that they serve a similar purpose. Pulse series having regular changes in repetition rate and distinct aural tones probably serve as social signals. The regular recurrence of a number of recognizably distinct pulsed tones suggests that the narwhal has ''signature'' calls similar to several other odontocetes.