Kollarits Dennis, Wappl Christian, Ringler Max
Department of Integrative Zoology, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria.
Department of Behavioural Biology, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria.
Herpetozoa. 2017 Jan 30;29(3-4):115-124.
Acoustic species recognition in anurans depends on spectral and temporal characteristics of the advertisement call. The recognition space of a species is shaped by the likelihood of heterospecific acoustic interference. The dendrobatid frogs (Cope, 1875) and (Dunn, 1931) occur syntopically in south-west Costa Rica. A previous study showed that these two species avoid acoustic interference by spectral stratification. In this study, the role of the temporal call structure in the advertisement call of was analyzed, in particular the internote-interval duration in providing species specific temporal cues. In playback trials, artificial advertisement calls with internote-intervals deviating up to ± 90 % from the population mean internote-interval were broadcast to vocally active territorial males. The phonotactic reactions of the males indicated that, unlike in closely related species, internote-interval duration is not a call property essential for species recognition in . However, temporal call structure may be used for species recognition when the likelihood of heterospecific interference is high. Also, the close-encounter courtship call of male is described.
无尾两栖类的声学物种识别取决于求偶鸣叫的频谱和时间特征。一个物种的识别空间受到异种声学干扰可能性的影响。丛蛙属（科普，1875年）和（邓恩，1931年）在哥斯达黎加西南部同域分布。先前的一项研究表明，这两个物种通过频谱分层避免声学干扰。在本研究中，分析了丛蛙属求偶鸣叫中时间鸣叫结构的作用，特别是音符间隔持续时间在提供物种特异性时间线索方面的作用。在回放试验中，向活跃鸣叫的领地雄性播放音符间隔与种群平均音符间隔偏差高达±90%的人工求偶鸣叫。雄性的趋声反应表明，与近缘物种不同，音符间隔持续时间不是丛蛙属物种识别所必需的鸣叫属性。然而，当异种干扰可能性很高时，时间鸣叫结构可用于物种识别。此外，还描述了雄性丛蛙近距离求偶鸣叫。
