Specialist Osmia bees forage indiscriminately among hybridizing Balsamorhiza floral hosts

  title={Specialist Osmia bees forage indiscriminately among hybridizing Balsamorhiza floral hosts},
  author={James H. Cane},
  • J. Cane
  • Published 6 April 2011
  • Biology, Medicine
  • Oecologia
Pollinators, even floral generalists (=polyleges), typically specialize during individual foraging bouts, infrequently switching between floral hosts. Such transient floral constancy restricts pollen flow, and thereby gene flow, to conspecific flowers in mixed plant communities. Where incipient flowering species meet, however, weak cross-fertility and often similar floral traits can yield mixed reproductive outcomes among pollinator-dependent species. In these cases, floral constancy by… Expand
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