AUTHOR=Gruden Pina , Barkley Yvonne M. , McCullough Jennifer L. K. 

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

JOURNAL=Frontiers in Marine Science

VOLUME=10

YEAR=2023

URL=https://www.frontiersin.org/journals/marine-science/articles/10.3389/fmars.2023.1147670

DOI=10.3389/fmars.2023.1147670

ISSN=2296-7745

ABSTRACT=<p>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 (<italic>Pseudorca crassidens</italic>) 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.</p>