High-pitched tonal signals of beluga whales (Delphinapterus leucas) in a summer assemblage off Solovetskii Island in the White Sea |
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Authors: | R A Belikov V M Bel’kovich |
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Institution: | (1) Shirshov Institute of Oceanology, Russian Academy of Sciences, Nakhimovskii pr. 36, Moscow, 117997, Russia |
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Abstract: | High-frequency whistles of beluga whales are analyzed. The signals are recorded in a belgua summer assemblage off Solovetskii
Island in the White Sea. The high-frequency whistles are narrowband signals with a continuous waveform and a fundamental frequency
above 5 kHz. On the average, they make up 7.7% of the total vocal production of the animals. Based on the shape of the fundamental
frequency contour and its time-frequency parameters, the high-frequency whistles are classed into 12 types. The HF whistles
have a mean fundamental frequency of 9.7 kHz, an average bandwidth of 3.3 kHz, and an average duration of 1.0 s. The number
of inflection points per signal ranges from 0 to 56 with a mean of 2.3. The predominant types are flat (50%), rising (23%),
and wavy (7%) high-frequency whistles. Presumably, beluga whales can use some of the whistle types for short-range communication
and other types for long-range communication.
Published in Russian in Akusticheskiĭ Zhurnal, 2006, Vol. 52, No. 2, pp. 156–164.
The article was translated by the authors. |
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