Resonance plays a secondary role in amplifying underwater vocalizations of Weddell seals (Leptonychotes weddellii)

During the breeding season, male Weddell seals (Leptonychotes weddellii) defend underwater territories using high amplitude trill vocalizations (some >190 dB re 1 μPa‐m). The source‐filter theory states that the characteristics of vocalizations are a product of both the sound produced at the sour...

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Bibliographic Details
Published in:Marine mammal science 2022-10, Vol.38 (4), p.1508-1523
Main Authors: Moore, Jennifer L., Terhune, John M.
Format: Article
Language:English
Subjects:
Amplitude
Amplitudes
Aquatic mammals
Breeding seasons
call amplitudes
Larynx
Leptonychotes weddellii
Marine mammals
Pharynx
phocid
Reflection
Resonance
Seals
Sound sources
Trachea
Tubes
Underwater
underwater vocalizations
Vocal tract
Vocalization behavior
Weddell seals
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Summary:During the breeding season, male Weddell seals (Leptonychotes weddellii) defend underwater territories using high amplitude trill vocalizations (some >190 dB re 1 μPa‐m). The source‐filter theory states that the characteristics of vocalizations are a product of both the sound produced at the source and the effects of soundwave reflection within the vocal tract. This study aimed to determine the relative influence of reflection (resonance). Weddell seal trills (tonal descending frequency sweeps ranging from >20 to
ISSN:0824-0469
1748-7692
DOI:10.1111/mms.12935