Vocal behavior of false killer whale (Pseudorca crassidens) acoustic subgroups

Understanding the vocal behavior of cetaceans is an important component of many passive acoustic applications. This study quantifies the vocal behavior of acoustic subgroups of false killer whales (Pseudorca crassidens) from the Hawaiian Archipelago. The acoustic subgroups (N = 523) exhibit diverse...

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Bibliographic Details
Published in:Frontiers in Marine Science
Main Authors: Pina Gruden, Yvonne M. Barkley, Jennifer L. K. McCullough
Format: Article in Journal/Newspaper
Language:English
Published: Frontiers Media S.A. 2023
Subjects:
acoustic behavior
false killer whales
echolocation clicks
whistles
towed hydrophone array
passive acoustics
Science
Q
General. Including nature conservation
geographical distribution
QH1-199.5
Killer Whale
Online Access:https://doi.org/10.3389/fmars.2023.1147670
https://doaj.org/article/a123a9e65aa1488988f70b25a5ebcedd
Description
Summary:Understanding the vocal behavior of cetaceans is an important component of many passive acoustic applications. This study quantifies the vocal behavior of acoustic subgroups of false killer whales (Pseudorca crassidens) from the Hawaiian Archipelago. The acoustic subgroups (N = 523) exhibit diverse vocal behavior that varies between encounters. Overall, 29% of acoustic subgroups only echolocate, 16% only whistle, and 55% emit both types of vocalizations. These results contribute important information for developing automated passive acoustic cetacean tracking, localization, and classification techniques, and thus, support future cetacean monitoring and assessment efforts.

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