Abstract
SUMMARYThe effects of sugar type (sucrose, glucose, fructose, and mixed monosaccharide), reward relative energy content, and floral colour (blue vs. white, or blue vs. yellow) on foraging behaviour of Asian hive bees (Apis cerana indica) visiting artificial flower patches were studied. In colour dimorphic flower patches, bees visited both flower colours extensively when caloric values of rewards were equivalent; some individuals randomly foraged with respect to colour while many bees showed various degrees of preference. When ‘nectar’ caloric rewards differed between flower morphs, bees switched to the flower colour with the greater reward irrespective of flower patch colour dimorphism. Energy maximization (calories/time) was a robust predictor of A. cerana behaviour with respect to the sugar types. The foraging behaviour of A. cerana differed from that reported for A. mellifera. Although both species foraged in accordance with predictions of an energy maximization model on blue-white dimorphic flower pat...
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