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Lookup NU author(s): Dr Liangliang Yang,
Dr Andrew Temple,
Professor Per Berggren
This is the authors' accepted manuscript of an article that has been published in its final definitive form by Acoustical Society of America, 2021.
For re-use rights please refer to the publisher's terms and conditions.
Odontocetes produce ultrasonic clicks for navigation and foraging. These arecommonly categorized as regular or buzz clicks based on the inter-click interval. Buzzclicks are linked to foraging behaviors and may be subdivided into slow buzz clicks forprey chase, and regular buzz clicks for prey capture. This study recorded these threeclick types produced by white-beaked dolphins ( Lagenorhynchus albirostris ) off theNorthumberland coast, UK. Acoustic parameters, (including duration, centroidfrequency, and root-mean-squared bandwidth) were calculated and compared acrossthe three click types. The results showed that the regular clicks had shorter durationsand higher frequencies than both the buzz click types. The regular buzz clicks hadlonger durations, lower frequencies, and narrower bandwidths than the slow buzzclicks. Additionally, regardless of click type, about 30% of the clicks had high-frequency(200-250 kHz) secondary peaks and > 90% of the clicks displayed spectral peak andnotch patterns between 20 and 80 kHz. These findings are useful for future quantitativeassessment of the echolocation performance of white-beaked dolphins in the wild. Thepatterns of spectral peaks and notches identified may facilitate for acousticidentification of this species.
Author(s): Yang L, Sharpe M, Temple AJ, Berggren P
Publication type: Article
Publication status: Published
Journal: Journal of the Acoustical Society of America
Online publication date: 04/03/2021
Acceptance date: 01/02/2021
Date deposited: 22/04/2021
ISSN (electronic): 0001-4966
Publisher: Acoustical Society of America
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