Signal detection theory, lateral-line excitation patterns and prey capture behaviour of mottled sculpin
Signal detection theory, lateral-line excitation patterns and prey capture behaviour of mottled sculpin
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DOI：
10.1006/anbe.1999.1179
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发表时间：
1999-08-01
期刊：
影响因子：
2.5
通讯作者：
Coombs, S
中科院分区：
文献类型：
--
作者：
Coombs, S
本文测量了斑点斑点金枪鱼(Cottus Bairdi)朝向偶极电流源(50赫兹振动球)的频率，作为源距离(2-18厘米)和方位角(鱼的前方0度或90度)的函数。随着震源距离从4 cm增加到12 cm，正侧震源的定向频率从70%以上下降到50%以下。当响应偏差(在没有信号的情况下响应的频率)与性能指标d‘一起考虑时，正面(12.5 cm)和横向(11.6 cm)源的阈值距离(d’下降到1的距离)是本研究中使用的鱼的平均标准长度的1.35-1.45倍。在距离小于8 cm时，横向源的d‘值明显较高(即性能较好)，尽管在任何给定距离，鱼的正面刺激峰值水平是横向源的两倍，但性能差异可能与空间激发模式的差异有关，特别是沿侧线系统相反的压力梯度方向的分布，横向源存在，而额源没有。(C)1999年动物行为研究协会。
The frequency with which blinded mottled sculpin, Cottus bairdi, oriented towards a dipole current source (50-Hz vibrating sphere) was measured as a function of source distance (2-18 cm) and azimuth (either 0 degrees in front or 90 degrees to the side of the fish). The orienting frequency declined from over 70% to under 50% as source distance increased from 4 to 12 cm for both frontal and lateral sources. When response biases (frequency of responding in the absence of the signal) were taken into account with the performance metric d', threshold distances (distances at which d' fell to 1) for frontal (12.5 cm) and lateral (11.6 cm) sources were 1.35-1.45 times the mean standard length of fish used in this study. At distances less than 8 cm, d' values were considerably higher (i.e. performance was better) for the lateral source, despite the fact that peak stimulus levels at the fish were twice as high for frontal as for lateral sources at any given distance, Performance differences may be related to differences in spatial excitation patterns, in particular the distribution of opposing pressure gradient directions along the lateral-line system, present for lateral sources, but absent for frontal sources. (C) 1999 The Association for the Study of Animal Behaviour.