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 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.

Automated summary

Understanding the vocal behavior of cetaceans is crucial for passive acoustic applications. This study examines the vocal behavior of false killer whales in the Hawaiian Archipelago. The results show diverse vocal behavior among different encounters, with 29% using only echolocation, 16% using only whistles, and 55% using both types of vocalizations. These findings contribute valuable information for the development of automated passive acoustic cetacean tracking and classification techniques, supporting future monitoring and assessment efforts.