Specialist Osmia bees forage indiscriminately among hybridizing Balsamorhiza floral hosts

@article{Cane2011SpecialistOB,
  title={Specialist Osmia bees forage indiscriminately among hybridizing Balsamorhiza floral hosts},
  author={James H. Cane},
  journal={Oecologia},
  year={2011},
  volume={167},
  pages={107-116}
}
  • 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
Pollinator sharing and low pollen–ovule ratio diminish reproductive success in two sympatric species of Portulaca (Portulacaceae)
TLDR
Both plant species are self-compatible, but produce fewer fruits and seeds after self-pollination than after cross- pollination, which is likely due to diminished flow of conspecific pollen grains, as the pollen–ovule ratio was extraordinarily small. Expand
Pollen carryover between sequential foraging trips by a solitary bee: Implications for distant outcrossing
TLDR
Carryover should mitigate inbreeding depression in threatened plant populations, or conversely, sometimes contaminate seed crops, with relevance for spatially isolating foundation seed fields and coexistence of GMO and conventional crops. Expand
Breeding Biology and Bee Guild of Douglas' Dustymaiden, Chaenactis douglasii (Asteraceae, Helenieae)
TLDR
Through manual pollination experiments, C. douglasii was found to be only weakly self-fertile; 15% of flowers from geitonogamy and autogamy treatments yielded filled achenes, and freely visited flowers from a wild population produced 91% fertile achene, indicating that seed production was not pollinator limited. Expand
Solitary bees - Potential vectors for gene flow from cultivated to wild strawberries
TLDR
It is concluded that wild bees are important shared flower visitors of both F. vesca and F. ananassa and are potential vectors for gene flow between cultivated and wild strawberries. Expand
Bees learn preferences for plant species that offer only pollen as a reward
TLDR
Pollen foraging behavior must be considered when seeking to account for similarities and differences in flowers of different species, according to the preferences of foraging pollinators. Expand
A review and updated classification of pollen gathering behavior in bees (Hymenoptera, Apoidea)
TLDR
This classification sets the groundwork for further research on various topics, including behavioral plasticity in different species, comparisons between generalists and specialists, and the relative effectiveness of different pollen gathering behaviors. Expand
A brief review of monolecty in bees and benefits of a broadened definition
TLDR
It is suggested that the utility of monolecty in bees would improve if it was applied to those bees species that use a single genus (not species) of flowering host. Expand
Plant Guide: Arrowleaf balsamroot (Balsamorhiza sagittata [Pursh] Nutt.)
TLDR
A wide variety of wildlife utilizes arrowleaf balsamroot, including deer, elk, bighorn sheep and pronghorn, and the seeds are eaten by birds and rodents. Expand
Foraging Behavior, Taxonomy, and Morphology of Bees (Hymenoptera: Apoidea), with an Emphasis on Perdita (Hymenoptera: Andrenidae)
Perdita subgenus Heteroperdita Timberlake, a distinctive subgenus of 22 species from the southwestern United States and adjacent Mexico, all specialists on Tiquilia (Boraginaceae), is revised. NineExpand
Bee foraging choice and implications for plant coexistence
TLDR
It is suggested that within the context of a youth-services agency using a mobile application, using a tablet or computer to provide real-time information about an individual’s educational needs is a viable process. Expand

References

SHOWING 1-10 OF 89 REFERENCES
Floral resource utilization by solitary bees (Hymenoptera: Apoidea) and exploitation of their stored foods by natural enemies.
TLDR
The evolution of resource specialization (including parasitism) in bees presents excellent opportunities to investigate phenotypic mechanisms responsible for evolutionary change. Expand
Pollen‐Foraging Dynamics of Subalpine Bumblebees (Bombus Latr.)
TLDR
It is concluded that in a biotic community well-coordinated with the physical environment, limited flower constancy of pollen-foraging pollinators appears to contribute a necessary degree of adaptive versatility through sharing of insect and floral resources. Expand
Pollination biology of the endangered Blowout Penstemon (Penstemon haydenii S. Wats.: Scrophulariaceae) in Nebraska1
TLDR
Management plans for conservation of Penstemon haydenii need to recognize its need for pollinators, and that the health of pollinator populations may be site-specific. Expand
Pollinator-mediated selection on a flower color polymorphism in experimental populations of Antirrhinum (Scrophulariaceae).
We quantified pollinator visit behavior, pollen receipt and export, and changes in allele and genotype frequencies from initial Hardy- Weinberg conditions in experimental arrays of two color morphsExpand
Flower constancy of the stingless bee Trigona carbonaria Smith (Hymenoptera: Apidae: Meliponini)
TLDR
The constancy of floral choice by Trigona carbonaria Smith in a garden is tested by examining, using a scanning electron microscope, the composition of the pollen loads of individual foragers over time, which enhances the pollinator efficacy of these insects by increasing the chances of pollen being transferred to stigmas of the same plant species. Expand
Pollination biology in hybridizing Baptisia (Fabaceae) populations.
TLDR
Results suggest that reproductive isolation is not responsible for the rarity of backcrossing in naturally hybridizing B. leucophaea and B. sphaerocarpa populations. Expand
Flower-visiting bees and the breakdown of the tristylous breeding system of Eichhornia azurea (Swartz) Kunth (Pontederiaceae).
TLDR
The disappearance of the short-styled morph from this region is likely correlated with the absence of Ancyloscelis gigas Friese, a specialized long-tongued bee that is oligolectic on this plant in other localities. Expand
Origins and ecological consequences of pollen specialization among desert bees
TLDR
Repeated origins of pollen specialization to one host plant where bloom occurs least predictably is a counter–example to prevailing theories that postulate such traits originate where the plant grows best and blooms most reliably. Expand
Floral constancy in bumble bees: handling efficiency or perceptual conditioning?
TLDR
It is suggested that constancy is due to some form of perceptual conditioning whereby individual bees become temporarily sensitized to one or a few floral cues. Expand
Pollination needs of arrowleaf balsamroot, Balsamorhiza sagittata (Heliantheae: Asteraceae)
TLDR
Through manual pollination field trials, the species was found to have a mixed pollination system, primarily xenogamous but partially self-compatible, and two species of Osmia bees rely mostly on Balsamorhiza and its close relative, Wyethia , for pollen. Expand
...
1
2
3
4
5
...