Place memory in crickets
Place memory in crickets
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把记忆放在蟋蟀身上
DOI：
10.1098/rspb.2007.1647
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
B. Webb
中科院分区：
文献类型：
--
作者：
J. Wessnitzer;M. Mangan;B. Webb
已知某些昆虫物种使用地标重新定位巢穴或食物地点，但昆虫之间这种能力的普遍性，以及昆虫的位置记忆是否可以用于新的任务设置，尚不清楚。我们测试了蟋蟀使用周围的视觉线索，重新定位一个看不见的目标在模拟的莫里斯水迷宫，一个标准的范式对啮齿动物的空间记忆测试的能力。成年雌性双斑蟋蟀被释放到一个竞技场，地板加热到令人厌恶的温度，有一个隐藏的凉爽点。在10次试验中，找到凉爽点所需的时间显著减少。当在竞技场墙壁上提供自然场景时，获得了最佳性能。动物可以从新的起点重新定位。当场景旋转时，它们优先接近对应于旋转的虚构目标位置。我们注意到，这种导航能力并不一定意味着动物具有内部空间表征。
Certain insect species are known to relocate nest or food sites using landmarks, but the generality of this capability among insects, and whether insect place memory can be used in novel task settings, is not known. We tested the ability of crickets to use surrounding visual cues to relocate an invisible target in an analogue of the Morris water maze, a standard paradigm for spatial memory tests on rodents. Adult female Gryllus bimaculatus were released into an arena with a floor heated to an aversive temperature, with one hidden cool spot. Over 10 trials, the time taken to find the cool spot decreased significantly. The best performance was obtained when a natural scene was provided on the arena walls. Animals can relocate the position from novel starting points. When the scene is rotated, they preferentially approach the fictive target position corresponding to the rotation. We note that this navigational capability does not necessarily imply the animal has an internal spatial representation.