Communication sounds produced by captive narrow-ridged finless porpoises (Neophocaena asiaeorientalis)
Communication sounds produced by captive narrow-ridged finless porpoises (Neophocaena asiaeorientalis)
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圈养窄脊江豚（Neophocaena asiaeorientalis）发出的交流声音
DOI：
10.1007/s10164-022-00755-0
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发表时间：
2022
影响因子：
0.9
通讯作者：
Yoshioka Motoi
中科院分区：
文献类型：
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作者：
Terada Tomoyoshi;Morisaka Tadamichi;Wakabayashi Ikuo;Yoshioka Motoi
牙齿鲸是验证声音交流的复杂性与社会性有关这一假设的理想模型。与对具有复杂社会系统的几种齿鲸物种的大量研究相比，对具有简单社会系统的物种（如窄脊江豚（Neophocaena asiaeorientalis））的声音交流的研究很少。在日本鸟羽水族馆对6只圈养的窄脊江豚（2雄4雌）的声音和行为进行了记录，以揭示该物种声音交流的存在。我们比较了在三个录音组和行为之间产生各种声音类型的频率和概率。我们确定了两种新的声音类型，是独立于回声定位点击。“包声”是一个脉冲序列，具有重复的脉冲包（声音序列的几个脉冲与不规则的，短的脉冲间隔），并产生了一个海豚组。“猝发脉冲”是一种脉冲串，其中脉冲间的间隔明显短于包声中的脉冲间隔，并且在接触行为期间产生。我们认为这两种声音类型是窄脊江豚的交流声音。
Toothed whales are the ideal model to validate the hypothesis that the complexity of sound communication relates to sociality. Compared to the numerous studies on several toothed whale species with complex social systems, there are very few studies on sound communication in species with simple social systems, such as narrow-ridged finless porpoises (Neophocaena asiaeorientalis). The sounds and behaviors of six captive narrow-ridged finless porpoises (two males and four females) were recorded at the Toba Aquarium, Japan, to reveal the existence of sound communication in this species. We compared the frequency and probability of the production of various sound types in three recording groups and between behaviors. We identified two novel sound types that were separate from echolocation clicks. The “packet sound” was a pulse sequence with repeated pulse packets (sound series of a few pulses with irregular, short inter-pulse intervals) and was produced by the one-porpoise group. The “burst pulses” was a pulse train in which the inter-pulse intervals were significantly shorter than those in packet sounds and were produced during contact behaviors. We considered that these two sound types were the communication sounds in narrow-ridged finless porpoises.