ACOUSTICALLY INDUCED CALL MODIFICATION IN THE WHITE-LIPPED FROG, LEPTODACTYLUS-ALBILABRIS
ACOUSTICALLY INDUCED CALL MODIFICATION IN THE WHITE-LIPPED FROG, LEPTODACTYLUS-ALBILABRIS
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DOI：
10.1016/s0003-3472(88)80198-2
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发表时间：
1988-09-01
期刊：
影响因子：
2.5
通讯作者：
MOORE, SW
中科院分区：
文献类型：
--
作者：
LOPEZ, PT;NARINS, PM;MOORE, SW
通过野外回放实验，研究了白色细趾鱼的发声行为。为了评估男性对广播强度逐渐增加的自然“啁啾”(广告叫声)和自然“咯咯”(攻击性叫声)刺激的反应，分析了啁啾叫声的三个参数(强度、主频率和重复率)。在被测试的男性中，69%的人表现出明显的啁啾强度增加，两种刺激类型的水平都增加了。作为对啁啾刺激回放的反应，雄性在91-42赫兹的平均范围内主动修改了它们啁啾叫声的主要频率，在一个案例中高达400赫兹。此外，17只雄性中有12只通过增加或降低鸣叫的主要频率，将它们的叫声频率移向啁啾刺激的主要频率(2175赫兹)。作为对自然窃笑刺激的反应，83%的雄性蜂鸣的主要频率要么减少了，要么没有显著变化。所有8名男性都被分析了啁啾频率和强度，结果表明啁啾强度增加了，同时也伴随着啁啾主频率的增加。这些结果首次定量地证明了无尾两栖动物的广告叫声强度和优势频率的可塑性。讨论了广告叫声改变对白纹伊蚊雄性交配成功的可能影响。
The vocalization behaviour of Leptodactylus albilabris was investigated using field playback experiments. To assess the response of males to pre-recorded natural ''chirp'' (advertisement call) and natural ''chuckle'' (aggressive call) stimuli of gradually increasing broadcast intensity, three parameters (intensity, dominant frequency and repetition rate) of the chirp call were analyzed. Of the males tested, 69% showed a significant increase in chirp intensity with increased levels of both stimulus types. In response to playback of the chirp stimulus, males actively modified the dominant frequency of their chirp calls over a mean range of 91-42 Hz, and in one case as much as 400 Hz. Moreover, 12 of 17 males shifted the frequency of their call towards the dominant frequency of the chirp stimulus (2175 Hz) by either increasing or decreasing the dominant frequency of their chirp calls. In response to the natural chuckle stimulus, 83% of the males showed either a decrease or no significant change in the dominant frequency of their chirps. All eight males for which both the chirp frequency and intensity were analysed and that showed an increase in chirp intensity also showed a concomitant increase in chirp dominant frequency. These results are the first to document quantitatively the plasticity of advertisement call intensity and dominant frequency in an anuran. The possible effects of advertisement call modification on male mating success in L. albilabris is discussed.