Tropical Ecology and Conservation [Monteverde Institute]

Alternative Title

La relación entre la publicidad floral y la eliminación de las polinias en Oerstedella exasperata (Orchidaceae)


Mary Snayd



Download Full Text (142 KB)

Publication Date

December 2007


The purpose of this study was to examine how the floral displays and morphology of Oerstedella exasperata affect reproductive success. This species of orchid is typified by extreme variability in both inflorescence and floral characteristics. In particular there is a wide distribution regarding the degree of symmetry observed in the labellum. The degrees of symmetry are characterized by variations within the fringe symmetry and bilateral symmetry. Furthermore, the surface area of the labellum varies greatly within a population. These remarkably diverse phenotypic morphologies and the summation of the floral traits can enhance or reduce the reproductive success of particular species. To test the relationship between floral advertisement and reproductive success, each flower was examined and grouped according to pollinia presence or removal. Results indicated that pollinia removal was not affected by the degree of bilateral or fringe symmetry or by the size of the labellum. Furthermore, within the 100 individuals examined, the asymmetrical trends were considered directional for bilateral symmetry but nondirectional for fringe symmetry. El propósito de este estudio era examinar cómo los patrones de asimetría en los rasgos morfológicos florales de Oerstedella exasperata afecta el éxito reproductivo de esta especie.


Orchids, Orquideas, Flowers--Morphology, Flores--Morfologia, Costa Rica--Puntarenas--Monteverde Zone--Monteverde, Costa Rica--Puntarenas--Zona de Monteverde--Monteverde, CIEE Fall 2007, CIEE Otoño 2007


Student affilliation : Department of Biology, Northeastern University Born Digital

Subject: topical

Orchids; Orquideas; Flowers--Morphology; Flores--Morfologia; CIEE Fall 2007; CIEE Otoño 2007

Subject: geographic

Costa Rica--Puntarenas--Monteverde Zone--Monteverde; Costa Rica--Puntarenas--Zona de Monteverde--Monteverde



Holding Location

Monteverde Institute MVI



Relationship between floral advertisement and pollinia removal in Oerstedella exasperata (Orchidaceae)



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