Phase-dependent visual control of the zigzag paths of navigating wood ants.
Phase-dependent visual control of the zigzag paths of navigating wood ants.
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对导航木蚁之字形路径的相位依赖视觉控制。
DOI：
10.1016/j.cub.2013.10.014
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Lent DD
中科院分区：
文献类型：
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作者：
Lent DD
动物有时会走曲折的道路到达目的地。昆虫在地面上追踪气味踪迹[1 - 3]或在空气中沿着气味羽流向上移动[4，5]，通常遵循之字形路径。一些昆虫[6 - 8]采取曲折的方式接近视觉目标，可能是为了获得视差信息。一只动物是如何保持它的整体路径朝着目标的方向而不破坏一个之字形的模式的？我们在这里描述了木蚁在熟悉的视觉场景引导下的策略。如果行进方向正确，蚂蚁会在曲折路径上的每个转折点后短暂地面对目标;如果行进方向错误，它们会在这个转折点迅速转向，以便将场景正确地放置在视网膜上。这种扫视式的转弯在锯齿形的其他地方是罕见的。类似地，当场景被跳转到视网膜上的一个新位置时，蚂蚁会等到锯齿形的预期目标面向阶段，然后才转向纠正强加的错误。正确的定时，间歇性控制允许动物调整其路径，而不会损害锯齿形图案在收集视觉信息或使用气味线索进行引导方面的额外作用。
Animals sometimes take sinuous paths to a goal. Insects, tracking an odor trail on the ground [1–3] or moving up an odor plume in the air [4, 5], generally follow zigzag paths. Some insects [6–8] take a zigzag approach to visual targets, perhaps to obtain parallax information. How does an animal keep its overall path in the direction of the goal without disrupting a zigzag pattern? We describe here the wood ant's strategy when guided by a familiar visual scene. If their travel direction is correct, ants face the goal briefly after each turning point along their zigzag path. If the direction is wrong, they turn rapidly at this point to place the scene correctly on their retina. Such saccade-like turns are rare elsewhere in the zigzag. Similarly, when the scene is made to jump to a new position on their retina, ants wait until an expected goal-facing phase of the zigzag before turning to correct the imposed error. Correctly timed, intermittent control allows an animal to adjust its path without compromising additional roles for the zigzag pattern in gathering visual information or in using odor cues for guidance.