Discrimination of coloured stimuli by honeybees: Alternative use of achromatic and chromatic signals
Discrimination of coloured stimuli by honeybees: Alternative use of achromatic and chromatic signals
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DOI：
10.1007/s003590050044
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发表时间：
1997-03-01
期刊：
影响因子：
--
通讯作者：
Menzel, R
中科院分区：
文献类型：
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作者：
Giurfa, M;Vorobyev, M;Menzel, R
使用Y-迷宫实验装置，将蜜蜂Apis mellifera训练到针对无色背景呈现的彩色圆盘。在随后的测试中，他们被要求在训练过的光盘和另一种光盘之间做出选择，这种光盘的色彩特性不同，或者与背景产生的非彩色绿色对比度不同。在两种实验情况下进行测试：一种是圆盘对着30度的视角（如蜜蜂在Y迷宫中的决策点所看到的），另一种是角度为6.5度或5度（取决于实验）。在30度的视角下，蜜蜂的选择行为是由色彩特性的差异决定的，而不是由绿色对比度的差异决定的。另一方面，对于6.5度和5度圆盘，它是由绿色对比度的差异决定的，而不是由色彩特性的差异决定的。因此，在目前的歧视任务，蜜蜂使用彩色或无色线索，这取决于在眼睛的刺激所对的视角。进一步实验的结果证实了上述结论，并且表明蜜蜂学习了经过训练的和未得到奖励的替代品之间的绿色对比度差异，在该实验中，将经过训练的圆盘与产生不同量的绿色对比度的圆盘进行测试。
Using a Y-maze experimental set-up, honeybees Apis mellifera were trained to a coloured disc presented against an achromatic background. In subsequent tests they were given a choice between the trained disc and an alternative disc that differed either in its chromatic properties, or in the amount of achromatic green contrast that it produced against the background. Tests were conducted in two experimental situations: one in which discs subtended a visual angle of 30 degrees (as viewed by the bee at the decision point in the Y-maze), and another in which the angle was 6.5 degrees or 5 degrees (depending on the experiment). At the visual angle of 30 degrees, the bees' choice behaviour was governed by the differences in chromatic properties, and not by the differences in the amount of green contrast. With the 6.5 degrees- and 5 degrees-discs, on the other hand, it was governed by the differences in the amount of green contrast, and not by the differences in chromatic properties. Consequently, in the present discrimination task, bees use either chromatic or achromatic cues, depending on the visual angle subtended by the stimuli at the eye. Results of a further experiment, in which the trained disc was tested against discs that produced various amounts of green contrast, confirm the above conclusion and show, in addition, that bees learn the green-contrast difference between a trained and a non-rewarded alternative.