Dynamics of forager arrivals and nectar renewal in flowers of Anchusa strigosa

Ronen Kadmon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Long-tongued Anthophora spp. bees collecting nectar from flowers of Anchusa strigosa (Boraginaceae) exhibit systematic foraging. Successive forager arrivals at individual flowers are not independent, and the time elapsed between successive arrivals at a particular flower is distributed more uniformly than be expected on the basis of a random arrival process. Distributions of inter-arrival time for individual flowers show standard deviation/mean ratios of 0.44-0.79, a range which is consistent with results obtained for two other plant-pollinator systems. The rate at which nectar is renewed between successive forager arrivals is independent of the amount of nectar in the flower, and the renewal process is strongly linear. Practical and theoretical implications of these results are discussed.

Original languageAmerican English
Pages (from-to)552-555
Number of pages4
Issue number4
StatePublished - Dec 1992


  • Anthophora
  • Bees
  • Nectar renewal
  • Nectar standing crop
  • Systematic foraging


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