摘要: Foraging by honeybee workers was investigated from the moment of first foraging flight until death. To minimise influence factors other than senescence foragers were trained to collect food an artificial flower close their hive. During each trip repeatedly visited flower, collecting one microlitre 50% sugar solution per visit. 50 flights mean time taken portion decreased significantly and number visits increased significantly. following 50th flight, The results confirm earlier observations that behaviour is not only influenced learning, but also effects senescence.