Underwater Sounds of Cephalorhynchus heavisidii (Mammalia:Cetacea)
Underwater Sounds of Cephalorhynchus heavisidii (Mammalia:Cetacea)
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Cephalorhynchus heavisidii（哺乳动物：鲸类）的水下声音
DOI：
10.2307/1379330
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发表时间：
1977
影响因子：
1.7
通讯作者：
Peter B. Best
中科院分区：
文献类型：
--
作者：
W. Watkins;William E. Schevill;Peter B. Best
在南非西海岸记录了重头喙龙的水下声音。这些海豚发出的声音都是低电平的脉冲声，带宽限制在5千赫兹（kHz）以下，通常小于2千赫兹，主要的重点经常在800赫兹左右，次要的非谐波重点在2到5千赫兹之间。他们记录了三种基本的声音重复率——慢速的咔哒声、短脉冲爆发声和一系列快速的脉冲，这些脉冲足以产生有音调的“哭声”。哭声的持续时间从0.4秒到2秒不等，是最常见的声音。在新西兰海域的C. hectori和南美洲南部海域的C. eutropia和C. commersonii也记录到了类似的声音。这些声音类似于许多由凤鸣虫发出的声音，凤鸣虫也有相似的外表、栖息地和行为。
Underwater sounds of Cephalorhynchus heavisidii were recorded from the west coast of South Africa. The sounds from these porpoises were all low level, pulsed sounds, restricted in bandwidth to less than 5 kiloHertz (kHz), often to less than 2 kHz, with major emphases frequently at around 800 Hz and secondary non-harmonic emphases at frequencies between 2 to 5 kHz. Three basic sound repetition rates were noted—clicks at slow rates, short bursts of pulses, and series of pulses at a rapid enough rate to produce a tonal “cry” sound. The cry sound varied in duration from 0.4 to over 2 seconds and was the most common sound heard. Similar sounds were recorded from C. hectori , off New Zealand, and C. eutropia and C. commersonii off southern South America. These sounds resemble many of those produced by Phocoena phocoena , which also has similar appearance, habitat, and behavior.