Visual and acoustic communication in the Brazilian torrent frog, Hylodes asper (Anura : Leptodactylidae)
Visual and acoustic communication in the Brazilian torrent frog, Hylodes asper (Anura : Leptodactylidae)
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巴西洪蛙 Hylodes asper（无尾：Leptodactylidae）的视觉和听觉交流
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
A. Giaretta
中科院分区：
文献类型：
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作者：
C. Haddad;A. Giaretta
我们研究了白天活动的青蛙Hylodes Asper的信号、领地和求偶行为。在涉及雄性、雌性和亚成体的种内互动中，视觉和声音交流被使用。Hylodes Asper拥有复杂的视觉交流系统，其中脚部下垂是在视觉信号曲目中观察到的最独特的显示。瀑布和激流产生的飞溅区在溪流附近产生了几乎恒定的高湿度，降低了干燥的风险，从而使海燕能够进行日常活动。虽然在鸣叫地点测量的环境声压级(SPL)与广告叫声的SPL相似，但海燕的高音叫声与水流产生的噪音在光谱上是不同的。因此，水流产生的环境噪音可能不会显著干扰该物种的声学交流。洪流和瀑布产生的噪音和几乎恒定的高湿度，加上光线的可用性，可能有利于阿斯佩尔对比色和视觉交流的演变。雄性阿斯佩尔在水下挖掘洞穴，这些洞穴很可能是用来遮挡卵和防止离合器漂流到下游的。
We studied the signaling, territorial, and courtship behaviors of the diurnal frog Hylodes asper. Visual and acoustic communication were used during intraspecific interactions involving males, females, and subadults. Hylodes asper has a complex visual communication system, of which foot-flagging is the most distinctive display observed in the repertoire of visual signals. The splash zone produced by the waterfalls and torrents creates a high, nearly constant, humidity near the streams, reducing the risk of desiccation which enables the diurnal activity of H. asper Although the ambient sound pressure levels (SPL), measured at the calling sites, are similar to the SPL of the advertisement calls, the high-pitched calls of H. asper are spectrally different from the noise produced by the water current. Thus, the ambient noise produced by the water current may not interfere significantly with the acoustic communication of this species. The noise and the nearly constant and high humidity produced by the torrents and waterfalls, along with the availability of light, probably favored the evolution of contrasting colors and visual communication in H. asper. Males of H. asper excavate underwater chambers that are probably used to shelter the eggs and to prevent the clutch from being drifted downstream.