Fish can encode order in their spatial map
Fish can encode order in their spatial map
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DOI：
10.1098/rspb.2004.2867
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发表时间：
2004-10-22
影响因子：
4.7
通讯作者：
de Perera, TB
中科院分区：
文献类型：
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作者：
de Perera, TB
动物必须经常通过比它们的感知范围更大的区域来确定方向。盲的墨西哥洞穴鱼，Astyanax fasciatus，依赖于通过使用其侧线器官检测物体的自诱导近场波扰动。它的感知范围（小于或等于0.05米）大大超过了它的生态测距要求（约100米）。30米）。虽然已知拥有其环境的空间地图，但不知道这种鱼如何将地方（或感知范围延伸的区域）联系在一起。利用盲洞鱼在面对明显不同的物体或环境时加速的倾向，我使用了一种行为分析来测试鱼是否可以学习和记住地标序列的顺序。据我所知，我第一次证明，盲的墨西哥洞穴鱼可以在它们的空间地图中编码顺序。对于那些必须在感知范围之外确定方向的动物来说，表现一系列空间关联的顺序的能力是一个强大的工具。由此产生的空间地图类似于拼图游戏，其中每一块代表一个位置，其大小受到动物感知范围的限制。
Animals must often orient through areas that are larger than their perceptual range. The blind Mexican cave fish, Astyanax fasciatus, depends on detecting self-induced near-field wave perturbations by objects via the use of its lateral line organ. Its perceptual range (less than or equal to 0.05 m) is greatly exceeded by its ecological ranging requirements (ca. 30 m). Although known to possess a spatial map of its environment, it is not known how this fish links places (or the area over which the perceptual range extends) together. Using the blind cave fish's propensity to accelerate when faced with objects or environments that are recognizably different, I used a behavioural assay to test whether fishes can learn and remember the order of a landmark sequence. I show, to my knowledge for the first time, that blind Mexican cave fish can encode order in their spatial map. The ability to represent the order in which a series of places are spatially linked is a powerful tool for animals that must orient beyond the limit of their perceptual range. The resulting spatial map would be analogous to a jigsaw puzzle, where each piece represents a place whose size is constrained by the animal's perceptual range.