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“…Nocturnal colour vision in A. dorsata is interesting because, despite being primarily diurnal, its colour vision capabilities extend into dim light, while the ‘model’ European honeybee Apis mellifera is reported to be colour-blind at twilight. …”
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“…Here we confirm flight activity of hornet workers in dim twilight. We studied the eyes and ocelli of European hornets (Vespa crabro) and common wasps (Vespula vulgaris) with the goal to find the optical and anatomical adaptations that enable them to fly in dim light. …”
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“…To disclose whether they can discriminate colours in dim light a behavioural dual choice experiment was performed. …”
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“…We hypothesize that the precise spectral tuning of the ocular media is mostly relevant for detecting weak UV signals, e.g. in dim hollow-nests of passerines and parrots. The correlation between eye size and UV transparency of the ocular media suggests little or no lens pigmentation. …”
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“…This article is part of the themed issue ‘Vision in dim light’.…”
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