The visual centring response in desert ants, Cataglyphis fortis.
The visual centring response in desert ants, Cataglyphis fortis.
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沙漠蚂蚁 Cataglyphis fortis 的视觉集中反应。
DOI：
10.5167/uzh-663
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发表时间：
2002
期刊：
影响因子：
--
通讯作者：
R. Wehner
中科院分区：
文献类型：
--
作者：
Daniel Heusser;R. Wehner
沙漠蚂蚁Cataglyphis fortis在杂乱的环境中穿行时，倾向于沿着由相邻的低矮灌木形成的小巷中线沿着行进。通过诱导觅食蚂蚁走过人工通道，研究了这种“集中反应”。通道的侧壁或者是均匀的黑色，或者设置有固定的或移动的黑白白色光栅。光栅的运动速度和空间周期以及壁的高度可以在通道的左手侧和右手侧独立地变化。结果清楚地表明，蚂蚁在展示它们的居中反应时，试图平衡的既不是它们左右视野中的自我诱导的图像速度，也不是它们左右视野中的对比度频率，而是两侧地标所对的垂直角度。当蚂蚁在通道中移动时，它们总是调整行走轨迹的横向位置，以使两只眼睛的墙壁所对的垂直角度相同。
When negotiating their way through cluttered environments, desert ants, Cataglyphis fortis, tend to run along the midlines of the alleys formed by adjacent low shrubs. This 'centring response' was investigated by inducing foraging ants to walk through artificial channels. The sidewalls of the channel were either homogeneously black or provided with stationary or moving black-and-white gratings. The speed of motion and the spatial period of the gratings and the height of the walls could be varied independently on the left-hand and right-hand sides of the channel. The results clearly show that the ants, while exhibiting their centring responses, try to balance neither the self-induced image speeds nor the contrast frequencies seen in their left and right visual fields, but the vertical angle subtended by the landmarks on either side. When manoeuvring through the channel, the ants always adjust the lateral positions of their walking trajectories in such a way that the vertical angles subtended by the walls are identical for both eyes.