Sperm whales exhibit variation in echolocation tactics with depth and sea state but not naval sonar exposures

• Published in: Marine Mammal Science
• Main Authors: Isojunno, Saana, von Benda-Beckmann, Alexander, Wensveen, Paul, Kvadsheim, Petter, Lam, Frans-Peter, Gkikopoulou, Kalliopi Charitomeni, Pöyhönen, Viivi, Tyack, Peter Lloyd, Benti, Benjamin, Foskolos, Ilias, Bort, Jacqueline, Neves, Miguel, Biassoni, Nicoletta, Miller, Patrick James
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2021
• Subjects: Anthropogenic noise; Continuous active sonar; DTAG; Auditory masking; Lombard; Sperm whale
• Online Access: https://research-portal.st-andrews.ac.uk/en/publications/b119c739-0f24-4979-99a7-b11b23496243; https://doi.org/10.1111/mms.12890; https://research-repository.st-andrews.ac.uk/bitstream/10023/26546/1/IsojunnoEtAl2021.pdf; https://research-repository.st-andrews.ac.uk/bitstream/10023/26546/2/IsojunnoEtAl2021_supplement.pdf

Auditory masking by anthropogenic noise may impact marine mammals relying on sound for important life functions, including echolocation. Animals have evolved antimasking strategies, but they may not be completely effective or cost-free. We formulated seven a priori hypotheses on how odontocete echol...