Exclusive shift from path integration to visual cues during the rapid escape run of fiddler crabs
Exclusive shift from path integration to visual cues during the rapid escape run of fiddler crabs
复制标题
招潮蟹快速逃跑过程中从路径整合到视觉提示的独特转变
DOI：
10.1016/j.anbehav.2018.08.012
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
Tomaru T and Gunji YP
中科院分区：
文献类型：
--
作者：
Murakami H;Tomaru T and Gunji YP
亮点我们研究了招潮蟹如何解决冲突的线索受到惊吓时。螃蟹响应视觉线索只有当PI表示接近他们的洞穴。这表明螃蟹之间的PI和视觉线索，而不是权衡他们之间的转换。我们讨论了与人类决策的相似之处与时间限制。动物配备了复杂的指导系统，使他们能够有效地导航。先前的研究表明，沙漠蚂蚁等觅食动物倾向于以加权的方式组合联合收割机引导系统，在接近目标的过程中，给予每个线索的权重逐渐变化。然而，当受到快速强制决策（例如在捕食风险下），动物可能会使用替代机制，如最近建议的生态相关的决定，涉及人类的时间限制。我们在这里表明，招潮蟹，Uca perplexa，scuttling到他们的洞穴时，受到威胁，只有当他们的路径整合（PI）系统表示接近他们的洞穴的视觉线索。当归巢错误施加放置假入口（视觉线索）沿着他们的归巢路径和掩盖他们的真实洞穴（PI的目标），受威胁的螃蟹改变他们的行为对视觉线索根据剩余的PI矢量长度，如果它是长的，他们继续运行，直到他们到达掩盖的真实洞穴，忽略视觉线索，但如果它是短的，他们突然停在假入口。我们的研究结果表明，招潮蟹，PI和视图是相互排斥的线索，他们立即从一个转移到另一个，如果他们接近年底的主页向量，而不是组合系统的加权方式。这可以使他们避免进入错误的洞穴，在那里他们将被驱逐的居民螃蟹和受到捕食。
HighlightsWe examined how fiddler crabs resolve a conflict between cues when startled.Crabs respond to visual cues only when PI indicates nearness to their burrows.This suggests crabs shift between PI and visual cues rather than weighting them.We discuss similarities with human decision making with time constraints.Animals are equipped with sophisticated guidance systems that enable them to navigate efficiently. Previous studies suggest that foraging animals such as desert ants tend to combine guidance systems in a weighted manner, where the weight given to each cue gradually changes during the approach to the goal. However, when subjected to rapid enforced decision making (eg under predation risk), the animal may use alternative mechanisms, as recently suggested for ecologically relevant decisions involving time constraints in humans. We show here that fiddler crabs, Uca perplexa, scuttling to their burrows when threatened, responded to visual cues only if their path integration (PI) systems indicated nearness to their burrows. When homing errors were imposed by placing fake entrances (visual cues) along their homing paths and masking their true burrows (the goal of PI), the threatened crabs altered their behaviour towards visual cues according to the remaining PI vector length; if it was long, they continued running until they arrived at the masked true burrow, ignoring the visual cue, but if it was short, they suddenly stopped at the fake entrance. Our results suggest that, for fiddler crabs, PI and the view are mutually exclusive cues and that they instantly shift from one to the other if they approach the end of the home vector, instead of combining systems in a weighted manner. This could enable them to avoid entering the wrong burrow, where they would be ejected by the resident crab and be subject to predation.
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影响因子：
2.8
作者：
Buehlmann, Cornelia;Cheng, Ken;Wehner, Ruediger
通讯作者：
Wehner, Ruediger
影响因子：
2.8
作者：
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通讯作者：
Wehner, Ruediger
影响因子：
2.8
作者：
Layne, JE;Barnes, WJP;Duncan, LMJ
通讯作者：
Duncan, LMJ
影响因子：
2.8
作者：
Layne, JE;Barnes, WJP;Duncan, LMJ
通讯作者：
Duncan, LMJ
招潮蟹的空间导航：Uca pugulator 的目标导向路径集成
DOI：
--
发表时间：
2013
期刊：
--
影响因子：
--
作者：
Luke Hong
通讯作者：
Luke Hong