Similarities in echolocation strategy and click characteristics between a Pseudorca crassidens and a Tursiops truncatus

Stuart D. Ibsen, Jacqueline Krause-Nehring, Paul E. Nachtigall, Whitlow W.L. Au, Marlee Breese

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

A previous comparative analysis of normalized click amplitude spectra from a Tursiops truncatus has shown that those frequencies with the lowest click-to-click variability in spectral content were the frequencies the animal paid attention to during target discrimination tasks. In that case, the dolphin only paid attention to the frequency range between 29-42 kHz which had a significantly higher degree of consistency in spectral content than frequencies above 42 kHz. Here it is shown that despite their morphological and behavioral differences, this same pattern of consistency was used by a Pseudorca crassidens performing a similar discrimination task. This comparison between species provides a foundation for using spectral level variability to determine the frequencies most important for echolocation in rare species and non-captive animals. Such results provide key information for successful management.

Original languageEnglish (US)
Pages (from-to)3085-3089
Number of pages5
JournalJournal of the Acoustical Society of America
Volume130
Issue number5
DOIs
StatePublished - Nov 1 2011

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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