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首页> 外文期刊>Animal Cognition >Not using the obvious: desert ants, Melophorus bagoti, learn local vectors but not beacons in an arena
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Not using the obvious: desert ants, Melophorus bagoti, learn local vectors but not beacons in an arena

机译:没有使用明显的东西:沙漠蚂蚁,Melophorus bagoti,学习局部矢量,但不学习舞台上的信标

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Many ant species travel large distances to find food, sometimes covering distances that are up to one million times their body length. Even when these foraging trips follow convoluted paths, the ants usually find their way back to their nest with precision (Wehner et al. in J Exp Biol 199:129-140, 1996). Ants have been shown to use both compass cues in the sky (pattern of polarised light) and landmarks on Earth to return to their nest. We present two experiments conducted on a solitary foraging ant: Melophorus bagoti in their natural habitat in the central Australian desert. Ants were trained and tested in situ. We tested foragers' ability to exit a circular arena which provided an undifferentiated panorama. Artificial visual landmarks were located near a small exit. On tests in which path integration information was not available, foragers did not use artificial landmarks as beacons. Instead, they oriented in the learned exit direction, whether or not it pointed to the nest. We suggest that M. bagoti foragers learned a context-specific local vector when cued by the context of the circular arena. Our findings present the first evidence that M. bagoti foragers learn context-specific compass directions to chart their initial path home.
机译:许多蚂蚁会长途跋涉寻找食物,有时覆盖的距离可能高达其体长的一百万倍。即使当这些觅食旅行遵循曲折的路径时,蚂蚁通常也会精确地找到返回巢穴的方式(Wehner等人,J Exp Biol 199:129-140,1996)。蚂蚁已被证明既可以使用天空中的指南针提示(偏振光的模式),也可以使用地球上的地标返回它们的巢穴。我们介绍了在一种单独的觅食蚂蚁上进行的两个实验:Melophorus bagoti在澳大利亚中部沙漠的自然栖息地。对蚂蚁进行了现场培训和测试。我们测试了觅食者退出圆形竞技场的能力,该竞技场提供了无与伦比的全景。人工视觉地标位于一个小出口附近。在无法获得路径整合信息的测试中,觅食者并未使用人工地标作为信标。取而代之的是,它们面向学习的出口方向,无论它是否指向嵌套。我们建议M. bagoti觅食者在受到圆形竞技场背景的提示时学会了特定于上下文的局部矢量。我们的发现提供了第一个证据,证明巴格蒂布氏酵母(M. bagoti)觅食者会学习特定于上下文的指南针方向,以绘制其初始归途。

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