n African Entomology - Inventory of insect visitors, foraging behaviour and pollination efficiency of honeybees ( L.) (Hymenpoptera: Apidae) on plum ( Lindl.) (Rosaceae) in the Constantine area, Algeria

Volume 21, Issue 2
  • ISSN : 1021-3589



A list of insect visitors of plum was established during the 2009 and 2010 flowering period for an orchard in Constantine. Four orders of insects were encountered on flowers: Hymenoptera, Diptera, Lepidoptera and Coleoptera. The last three orders made very few visits. The honeybee was the most abundant visitor in both years, representing 79% and 78% of recorded visits. Foraging honeybees visited on average nine flowers per minute and 27 flowers per tree, and flights were most frequent between adjacent trees of different rows (56%). Only the flowers that received between three and five honeybee visits yielded fruit and the percentages of fruits formed were similar (31.6% and 30.4% in 2009 and 2010, respectively).

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