Whistles of beluga whales in the reproductive gathering off Solovetskii Island in the White Sea
Whistles of beluga whales in the reproductive gathering off Solovetskii Island in the White Sea
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DOI：
10.1134/s1063771007040148
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发表时间：
2007-07-01
影响因子：
0.8
通讯作者：
Bel'kovich, V. M.
中科院分区：
文献类型：
--
作者：
Belikov, R. A.;Bel'kovich, V. M.
分析了白海索洛维茨基岛附近白鲸繁殖聚集时记录的哨声。根据哨声频率轮廓的绝对特征和形状，将哨声分为16种类型。哨声属于相对较低的频段，含有大量的谐波，具有简单的频率轮廓形状。不同类型的哨声平均时长从0.1%到1.7%不等，S最大基频平均值在1.4kHz到4.5kHz之间，每个信号的平均拐点个数在0到9个之间。与其他种群不同的是，平哨是最频繁的发声，在白海的繁殖聚集中观察到的白鲸最常发出V形频率轮廓的短口哨。
Whistles recorded in a reproductive gathering of beluga whales near Solovetskii Island in the White Sea are analyzed. On the basis of the absolute characteristics and shape of the frequency contour, whistles are classed into 16 types. Whistles belong to a relatively low frequency band, contain many harmonics, and have a simple shape of frequency contour. The average whistle duration varies from 0.1 to 1.7 s for different types, the average value of the maximum fundamental frequency varies from 1.4 to 4.5 kHz, and the average number of inflection points is from 0 to 9 per signal. In contrast to other populations, where flat whistles are the most frequent vocalizations, beluga whales observed in the reproductive gathering in the White Sea most often produce short whistles with a V-shaped frequency contour.