Effectiveness and Importance of Pollinators to the Star Cactus (Astrophytum asterias)

@inproceedings{Blair2008EffectivenessAI,
  title={Effectiveness and Importance of Pollinators to the Star Cactus (Astrophytum asterias)},
  author={Andrew W. Blair and Paula S. Williamson},
  year={2008}
}
Abstract Astrophytum asterias (star cactus) is an obligate outcrosser that does not reproduce vegetatively, so all reproduction is the result of inter-plant transfer of pollen by insects. By measuring seed set resulting from single pollinator visits, we evaluated effectiveness (mean seed set per visit) and importance of pollinator (effectiveness times frequency of visitation) of insects visiting flowers of A. asterias. Results indicate that the most common visitor, Macrotera lobata, is a… 
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