Pollination ecology of <i>Rodriguezia granadensis</i> (Orchidaceae)


  • Nhora H. Ospina-Calderón Departamento de Biología, Maestría en Biología-Ecología, Universidad Nacional de Colombia, Bogotá, Colombia
  • Carol A. Duque-Buitrago Programa de Biología. Universidad de Caldas, Manizales, Colombia
  • Raymond L. Tremblay Center for Applied Tropical Ecology and Conservation , PO Box 23360, University of Puerto Rico, Río Piedras, Puerto Rico, USA
  • J. Tupac Otero Departamento de Ciencias Biológicas, Universidad Nacional de Colombia, Palmira, Colombia




self-mimetism, floral baits, deceit pollination, Euglossine bee, melitophily, reproductive success


In this paper we describe the phenotypic variation and pollination ecology of the twig orchid epiphyte Rodriguezia granadensis. The species presents flower color polymorphism (pink to white), suggesting that different color forms might be pollinated by different pollinators. To evaluate this hypothesis, one hundred plants were monitored in the field and their flowering phenology and color polymorphism was noted, two peaks of flowering were noted over the year. We evaluated the reproductive success (pollinaria removal and fruit set) and the visit of potential pollinators to both morphs. Fruit production by autogamy, geitonogamy, xenogamy, and emasculation were compared. Sugar concentration in the nectar was measured with a refractometer. Potential pollinators, euglossini bees, were attracted using methyl salicylate and eugenol. We evidenced that R. granadensis is pollinated by nectar-foraging euglossine bees. The fluctuation in nectar production and the scarce reproductive success among individuals suggests that the orchids may employ an attraction-deceit system as a self-mimetic or a diffuse rewarding phenomenon. 


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How to Cite

Ospina-Calderón, N. H., Duque-Buitrago, C. A., Tremblay, R. L., & Otero, J. T. (2015). Pollination ecology of &lt;i&gt;Rodriguezia granadensis&lt;/i&gt; (Orchidaceae). Lankesteriana: International Journal on Orchidology, 15(2). https://doi.org/10.15517/lank.v15i2.20745

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