Bumblebee flight performance in environments of different proximity
Bumblebee flight performance in environments of different proximity
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DOI：
10.1007/s00359-015-1055-y
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发表时间：
2016-02-01
影响因子：
2.1
通讯作者：
Dacke, Marie
中科院分区：
文献类型：
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作者：
Linander, Nellie;Baird, Emily;Dacke, Marie
飞行动物能够在不同复杂的环境中高精度地导航。为了控制它们在狭窄的隧道中的飞行，蜜蜂和鸟类使用由墙壁产生的明显的图像运动（称为光流）的大小。然而，在它们的自然栖息地，这些动物会遇到混乱和开放的环境。在这里，我们调查如何在附近的表面附近的大的变化影响光流为基础的飞行控制策略。我们训练大黄蜂沿着飞行，并记录墙之间的距离从60厘米到240厘米如何影响它们的飞行控制。我们的研究结果表明，随着隧道宽度的增加，横向位置和地面速度变得越来越可变。我们还发现，来自地面的光流信息对飞行控制的影响越来越大，这表明大黄蜂在大的横向和腹侧视场内灵活地测量光流，具体取决于光流最大值发生的位置。这种策略的结果是，当在狭窄的空间飞行时，大黄蜂使用来自附近障碍物的光流信息来控制飞行，而在更开放的空间中，它们主要依赖于来自地面的光流线索。
Flying animals are capable of navigating through environments of different complexity with high precision. To control their flight when negotiating narrow tunnels, bees and birds use the magnitude of apparent image motion (known as optic flow) generated by the walls. In their natural habitat, however, these animals would encounter both cluttered and open environments. Here, we investigate how large changes in the proximity of nearby surfaces affect optic flow-based flight control strategies. We trained bumblebees to fly along a flight and recorded how the distance between the walls-from 60 cm to 240 cm-affected their flight control. Our results reveal that, as tunnel width increases, both lateral position and ground speed become increasingly variable. We also find that optic flow information from the ground has an increasing influence on flight control, suggesting that bumblebees measure optic flow flexibly over a large lateral and ventral field of view, depending on where the highest magnitude of optic flow occurs. A consequence of this strategy is that, when flying in narrow spaces, bumblebees use optic flow information from the nearby obstacles to control flight, while in more open spaces they rely primarily on optic flow cues from the ground.