Accuracy of phonotaxis by the green treefrog (Hyla cinerea)
Accuracy of phonotaxis by the green treefrog (Hyla cinerea)
复制标题
绿色树蛙（Hyla cinerea）趋声的准确性
DOI：
10.1007/bf00661127
复制
发表时间：
1979
期刊：
影响因子：
--
通讯作者：
R. R. Capranica
中科院分区：
文献类型：
--
作者：
J. Rheinlaender;H. Gerhardt;D. D. Yager;R. R. Capranica
1.对42只雌性绿色树蛙进行了156次声定位研究（Hyla cinerea）在3.75米的距离上对人工合成的交配叫声进行了录像（0.9 kHz和0.9、2.7和3.0 kHz）。2.为了量化趋声性的准确性，测量跳跃角γ和头部定向角α（图2）当动物距离声源1米或更远时。3.趋声性对三成分叫声的反应非常准确，这在行为上等同于雄性的自然交配叫声。平均跳跃角度为
$$\bar \gamma = 16.1^\circ$$
(Fig. 5）。头部扫描发生在大约25%的跳跃之前。扫描后头部方向的准确性甚至更高
$$（\bar \alpha = 8.4^\circ）$$
以及随后的跳跃
$$（\bar \gamma = 11.8^\circ）$$
(Fig. 4.关于两个合成呼叫，没有发现跳跃准确性的统计学显著差异（表1）。因此，3 kHz左右的高频成分，通常发现在交配呼叫，不提高声音定位的准确性。5.我们的结果进行了讨论，在脊椎动物和无脊椎动物的声音定位模型，我们认为，树蛙的耳朵必须作为一个声压梯度接收器。
Summary1.Phonotactic approaches (N=156) of 42 female green treefrogs (Hyla cinerea) were videotaped over a distance of 3.75 m in response to synthetic mating calls (0.9 kHz and 0.9, 2.7 and 3.0 kHz).2.To quantify the accuracy of phonotaxis, jump anglesγ and head orientation angles α were measured (Fig. 2) when the animals were 1 m or farther from the sound source.3.Phonotaxis was extremely accurate in response to the 3-component call, which is behaviorally equivalent to the male's natural mating call. The mean jump angle was
$$\bar \gamma = 16.1^\circ$$
(Fig. 5). Head scanning occurred prior to about 25% of the jumps. The accuracy of head orientation after scanning was even greater
$$(\bar \alpha = 8.4^\circ )$$
as were the subsequent jumps
$$(\bar \gamma = 11.8^\circ )$$
(Fig. 6 and Table 1).4.With respect to the two synthetic calls no statistically significant differences in jump accuracy were found (Table 1). Thus the high frequency components around 3 kHz, normally found in the mating call, do not enhance the accuracy of sound localization.5.Our results are discussed in terms of models of sound localization in vertebrates and invertebrates, and we suggest that the treefrog's ear must act as a sound pressure gradient receiver.