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    Whistle characteristics of Indo-Pacific bottlenose dolphins (Tursiops aduncus) in the Fremantle Inner Harbour, Western Australia

    Access Status
    Fulltext not available
    Authors
    Ward, R.
    Parnum, Iain
    Erbe, Christine
    Salgado Kent, Chandra
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Ward, R. and Parnum, I. and Erbe, C. and Salgado Kent, C. 2016. Whistle characteristics of Indo-Pacific bottlenose dolphins (Tursiops aduncus) in the Fremantle Inner Harbour, Western Australia. Acoustics Australia. 44 (1): pp. 159-169.
    Source Title
    Acoustics Australia
    DOI
    10.1007/s40857-015-0041-4
    ISSN
    0814-6039
    School
    Centre for Marine Science and Technology
    URI
    http://hdl.handle.net/20.500.11937/39803
    Collection
    • Curtin Research Publications
    Abstract

    Bottlenose dolphins use whistles to communicate with their conspecifics and maintain group cohesion. We recorded 477 whistles of Indo-Pacific bottlenose dolphins (Tursiops aduncus) in the Fremantle Inner Harbour, Western Australia, on nine occasions over a six-week period during May/June 2013. Over half (57 %) of the whistles had complex contours exhibiting at least one local extremum, while 32 % were straight upsweeps, 5 % downsweeps and 6 % constant-frequency. About 60 % of whistles occurred in trains. Fundamental frequency ranged from 1.1 to 18.4 kHz and whistle duration from 0.05 to 1.15 s. The maximum numbers of local extrema and inflection points were 7 and 9, respectively. Whistle parameters compared well to those of measurements made from other T. aduncus populations around Australia. Observed differences might be due to ambient noise rather than geographic separation.

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