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    In situ source levels of mulloway (Argyrosomus japonicus) calls.

    191034_191034.pdf (675.5Kb)
    Access Status
    Open access
    Authors
    Parsons, Miles
    McCauley, Robert
    Mackie, M
    Siwabessy, Paulus
    Duncan, Alexander
    Date
    2012
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Parsons, Miles J. G. and McCauley, Robert D. and Mackie, Michael C. and Siwabessy, Paulus J. and Duncan, Alec J. 2012. In situ source levels of mulloway (Argyrosomus japonicus) calls. Journal of the Acoustical Society of America. 132 (5): pp. 3559-3568.
    Source Title
    Journal of the Acoustical Society of America
    DOI
    10.1121/1.4756927
    ISSN
    0001-4966
    Remarks

    Copyright 2012 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Journal of the Acoustical Society of America. 132 (5): pp. 3559-3568 and may be found at http://dx.doi.org/10.1121/1.4756927

    URI
    http://hdl.handle.net/20.500.11937/42558
    Collection
    • Curtin Research Publications
    Abstract

    Mulloway (Argyrosomus japonicus) in Mosman Bay, Western Australia produce three call categories associated with spawning behavior. The determination of call source levels and their contribution to overall recorded sound pressure levels is a significant step towards estimating numbers of calling fish within the detection range of a hydrophone. The source levels and ambient noise also provide significant information on the impacts anthropogenic activity may have on the detection of A. japonicus calls. An array of four hydrophones was deployed to record and locate individual fish from call arrival-time differences. Successive A. japonicus calls produced samples at various ranges between 1 and 100 m from one of the array hydrophones. The three-dimensional localization of calls, together with removal of ambient noise, allowed the determination of source levels for each call category using observed trends in propagation losses and interference. Mean source levels (at 1 m from the hydrophone) of the three call categories were calculated as 163 ± 16 dB re 1 μPa for Category 1 calls (short call of 2–5 pulses); 172 ± 4 dB re 1 μPa for Category 2 calls (long calls of 11–32 pulses); and 157 ± 5 dB re 1 μPa for Category 3 calls (series of successive calls of 1–4 pulses, increasing in call rate).

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