Shifts in frequency-modulated pulses recorded during an encounter with Blainville's beaked whales (Mesoplodon densirostris)

TitleShifts in frequency-modulated pulses recorded during an encounter with Blainville's beaked whales (Mesoplodon densirostris)
Publication TypeJournal Article
Year of Publication2016
AuthorsKeating J.L, Barlow J, Rankin S.
JournalJournal of the Acoustical Society of America
Volume140
PaginationEL166-EL171
Date Published2016/08
Type of ArticleArticle
ISBN Number0001-4966
Accession NumberWOS:000383916100004
Keywordsclicks; echolocation signals; prey; pseudorca-crassidens; transmission beam pattern
Abstract

Echolocation signals produced by beaked whales (family: Ziphiidae) include frequency-modulated (FM) pulses that appear to have species-specific characteristics. To date there has been no established evidence that a single species of beaked whale might produce more than one type of FM pulse. In 2014 a group of Blainville's beaked whales (Mesoplodon densirostris) were sighted off of Southern California; recordings included FM pulses with significant increases in peak frequency, center frequency, and -10 dB bandwidth relative to FM pulses previously attributed to this species. This research suggests there may be greater variation in received beaked whale FM pulses than previously understood.

DOI10.1121/1.4959598
Student Publication: 
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