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Cyclic change of dugong's vocal behavior

机译:儒艮发声行为的周期性变化

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摘要

We examined relationship between vocal behavior of dugongs (Dugong dugon) and (1)time of day and (2) tide around Talibong Island, using passive acoustical observation. Also, we compared the results of several data and investigate whether the same behavior can be observed over different time of year. We used underwater sound data recorded in February and March 2004, November 2006 and January 2008 off southeast of Talibong Island and analyzed the number of calls detected in unit time in relation to time and tide. We also compared the result of the analysis among three months and investigated whether there was any difference. In terms of the effects of time, more calls were detected in nighttime than in daytime (p<0.05). In terms of the effects of tide, there were significant correlation between maximum tidal range and many calls were detected when tidal range was narrow. Our findings suggest that vocalization pattern of the dugongs is influenced by such external factors as time and tidal range.
机译:我们使用被动声学观察方法研究了儒艮(Dugong dugon)的发声行为与(1)一天中的时间和(2)Talibong岛周围潮汐之间的关系。此外,我们比较了一些数据的结果,并调查了是否可以在一年中的不同时间观察到相同的行为。我们使用了2004年2月和2004年3月,2006年11月和2008年1月在塔里蓬岛东南海域记录的水下声音数据,并分析了单位时间内与时间和潮汐相关的水上电话数量。我们还比较了三个月的分析结果,并调查是否存在任何差异。从时间的影响来看,夜间检测到的呼叫数量要多于白天(p <0.05)。就潮汐的影响而言,最大潮汐范围之间存在显着的相关性,当潮汐范围狭窄时,可以检测到许多呼唤。我们的发现表明,儒艮的发声方式受时间和潮汐范围等外部因素的影响。

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  • 来源
    《海洋理工学会誌》 |2013年第1期|1-4|共4页
  • 作者单位

    Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan;

    Research Institute for Humanity and Nature, 457-4, Motoyama, Kamigamo, Kita-ku, Kyoto, 603-8047' Japan;

    Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan;

    Field Science Education and Research Center, Kyoto University, Kitashirakawa Oiwake-cho;

    Sakyo-ku,Kyoto, 606-8502, Japan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dugong; vocal behavior; call; time; tide;

    机译:儒艮声音行为;呼叫;时间;浪潮;

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