Impact of central complex lesions on innate and learnt visual navigation in ants.
Impact of central complex lesions on innate and learnt visual navigation in ants.
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DOI：
10.1007/s00359-023-01613-1
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发表时间：
2023-07
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影响因子：
--
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中科院分区：
文献类型：
--
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木蚁是优秀的导航员，它们结合了先天和后天的导航策略，在巢穴和觅食地之间穿梭。蚂蚁的视觉导航已被广泛研究，然而，我们很少有直接证据表明其潜在的神经机制。在这里，我们对木蚁的中央复合体（CX）进行了横向机械损伤，这是一种中线结构，已知可以让昆虫保持相对于自身方向的感觉线索的方向，并控制运动。我们观察了两组蚂蚁，并观察了它们在一个有大型视觉地标的舞台上的行为。第一组蚂蚁是naïve，当完好无损时，这些蚂蚁对显眼的地标表现出明显的先天吸引力。第二组蚂蚁被训练瞄准地标旁边的食物位置。naïve蚂蚁朝向视觉线索的总体方向不会因损伤而改变，但被训练到邻近地标性食物位置的蚂蚁的方向受到影响。因此，CX病变对习得的视觉引导有特定的影响。我们还观察到，侧边病变改变了转向的细节，受损蚂蚁花更少的时间转向病变的同侧。结果证实了CX在控制中的作用，并强调了它在依赖于来自其他大脑区域的信息的习得行为的实施中的重要作用。在线版本包含补充材料，可在10.1007/s00359-023-01613-1获得。
Wood ants are excellent navigators, using a combination of innate and learnt navigational strategies to travel between their nest and feeding sites. Visual navigation in ants has been studied extensively, however, we have little direct evidence for the underlying neural mechanisms. Here, we perform lateralized mechanical lesions in the central complex (CX) of wood ants, a midline structure known to allow an insect to keep track of the direction of sensory cues relative to its own orientation and to control movement. We lesioned two groups of ants and observed their behaviour in an arena with a large visual landmark present. The first group of ants were naïve and when intact such ants show a clear innate attraction to the conspicuous landmark. The second group of ants were trained to aim to a food location to the side of the landmark. The general heading of naïve ants towards a visual cue was not altered by the lesions, but the heading of ants trained to a landmark adjacent food position was affected. Thus, CX lesions had a specific impact on learnt visual guidance. We also observed that lateralised lesions altered the fine details of turning with lesioned ants spending less time turning to the side ipsilateral of the lesion. The results confirm the role of the CX in turn control and highlight its important role in the implementation of learnt behaviours that rely on information from other brain regions. The online version contains supplementary material available at 10.1007/s00359-023-01613-1.
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影响因子：
9.2
作者：
Buehlmann, Cornelia;Graham, Paul;Knaden, Markus
通讯作者：
Knaden, Markus
影响因子：
9.2
作者：
Beetz, M. Jerome;Kraus, Christian;El Jundi, Basil
通讯作者：
El Jundi, Basil
影响因子：
2.8
作者：
Guo, Peiyuan;Ritzmann, Roy E.
通讯作者：
Ritzmann, Roy E.
影响因子：
3
作者：
Grob R;Fleischmann PN;Grübel K;Wehner R;Rössler W
通讯作者：
Rössler W
DOI：
10.1242/jeb.243687
发表时间：
2022-02-01
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Franzke M;Kraus C;Gayler M;Dreyer D;Pfeiffer K;El Jundi B
通讯作者：
El Jundi B