紫外線除去フィルムが3種のハナバチ類の外役行動に及ぼす影響

概要

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Foraging by three species of bees (Ceratina japonica, Megachile rotundata and Plebeia droryana) was studied in greenhouses roofed with ultraviolet-absorbing (UVA) film, and common agricultural (CA) film. C.japonica could not fly and kept guard at the entrance of nests. M.rotundata left their nests, but most individuals kept flying beneath the ceiling continuously and could not return to their nests. In the highly-eusocial bee P.droryana, some individuals performed foraging. The ratio of foraging tasks on nectar, pollen and resin were 24.5%, 19.3% and 56.2% under UVA film, and 71.8%, 19.8%, and 8.4% under CA film. Resin foraging was performed normally even under UVA film. Resin foragers might be able to orientate with only landmarks and without UV light, because they have wide experience of extranidal tasks.
日本応用動物昆虫学会の論文
1993-08-25