Factors influencing pollination and fruit set in Epidendrum radicans


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Factors influencing pollination and fruit set in  Epidendrum radicans

Material Information

Title:
Factors influencing pollination and fruit set in Epidendrum radicans
Translated Title:
Factores que influyen en la polinización y el cuajado de las frutas de Epidendrum radicans
Creator:
Dixon, Megan
Publication Date:
Language:
Text in English

Subjects

Subjects / Keywords:
Pollination by animals ( lcsh )
Polinizado por animales ( lcsh )
Plants--Reproduction ( lcsh )
Plantas--Reproduccion ( lcsh )
Mimicry (Biology) ( lcsh )
Mimetismo (Biologia) ( lcsh )
Costa Rica--Puntarenas--Monteverde Zone--San Luis
Costa Rica--Puntarenas--Zona de Monteverde--San Luis
CIEE Spring 2005
CIEE Primavera 2005
Genre:
Reports

Notes

Abstract:
Food deception mimicry is a device in which plants lure pollinators with flowers that don’t contain a reward. Flowers that use deception may use two taxa mimicry, automimicry, or mimicry based on naivete. Epidendrum radicans has been documented to take advantage of two taxa mimicry only in close geographic range. This study finds that although pollinia removal and pollination is low in monospecific patches of E. radicans, successful pollination is a product of pollinator naivete and/or long distance two taxa mimicry. The likelihood of pollinator visitation increases for each plant with inflorescence size. Pollination rate peaks with the peak in migrating populations of naïve butterflies. With low rates of pollination, it is highly likely that thriving populations rely heavily on vegetative reproduction. In the case of pollination, pollinia removal leads the plant to drop its flower early. I hypothesize that this mechanism promotes genetic diversity within the population. ( ,,, )
Abstract:
La mímica del engaño del alimento es un dispositivo en el que la planta atrae a los polinizadores con flores que no contienen una recompensa. Las flores que utilizan el engaño pueden utilizar la mímica de dos taxones, o auto mímica, o la mímica basada en la candidez. Se ha reportado que Epidendrum radicans se aprovecha de la mímica de dos taxones sólo en ámbitos geográficos pequeños. Este estudio determinó que aunque la eliminación de las polinias y la polinización sean bajas en grupos monoespecíficos de E. radicans, la polinización exitosa es un producto de la candidez polinizadora y/o la mímica de dos taxones a larga distancia. La probabilidad de las visitas de los polinizadores aumenta con el tamaño de la inflorescencia para cada planta. La tasa de polinización alcanza el máximo con el pico en las poblaciones migratorias de mariposas cándidas. Es muy probable que las poblaciones prósperas con tasas bajas de polinización dependan sobremanera de la reproducción vegetativa. La eliminación del pollinia lleva a la planta a botar la flor prematuramente. Se propuso que este mecanismo promueve la diversidad genética dentro de la población.
Biographical:
Student affiliation: Department of Biology, Northeastern University
Biographical:
Born Digital

Record Information

Source Institution:
Monteverde Institute
Holding Location:
Monteverde Institute
Rights Management:
This item is licensed with the Creative Commons Attribution Non-Commercial No Derivative License. This license allows others to download this work and share them with others as long as they mention the author and link back to the author, but they can’t change them in any way or use them commercially.
Resource Identifier:
M39-00227 ( USFLDC DOI )
m39.227 ( USFLDC Handle )

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Book

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Full Text
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Dixon, Megan
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Factores que influyen en la polinizacin y el cuajado de las frutas de Epidendrum radicans
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Factors influencing pollination and fruit set in Epidendrum radicans
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c 2005-05
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Food deception mimicry is a device in which plants lure pollinators with flowers that dont contain a reward. Flowers that use deception may use two taxa mimicry, automimicry, or mimicry based on naivete. Epidendrum radicans has been documented to take advantage of two taxa mimicry only in close geographic range. This study finds that although pollinia removal and pollination is low in monospecific patches of E. radicans, successful pollination is a product of pollinator naivete and/or long distance two taxa mimicry. The likelihood of pollinator visitation increases for each plant with inflorescence size. Pollination rate peaks with the peak in migrating populations of nave butterflies. With low rates of pollination, it is highly likely that thriving populations rely heavily on vegetative reproduction. In the case of pollination, pollinia removal leads the plant to drop its flower early. I hypothesize that this mechanism promotes genetic diversity within the population.
La mmica del engao del alimento es un dispositivo en el que la planta atrae a los polinizadores con flores que no contienen una recompensa. Las flores que utilizan el engao pueden utilizar la mmica de dos taxones, o auto mmica, o la mmica basada en la candidez. Se ha reportado que Epidendrum radicans se aprovecha de la mmica de dos taxones slo en mbitos geogrficos pequeos. Este estudio determin que aunque la eliminacin de las polinias y la polinizacin sean bajas en grupos monoespecficos de E. radicans, la polinizacin exitosa es un producto de la candidez polinizadora y/o la mmica de dos taxones a larga distancia. La probabilidad de las visitas de los polinizadores aumenta con el tamao de la inflorescencia para cada planta. La tasa de polinizacin alcanza el mximo con el pico en las poblaciones migratorias de mariposas cndidas. Es muy probable que las poblaciones prsperas con tasas bajas de polinizacin dependan sobremanera de la reproduccin vegetativa. La eliminacin del pollinia lleva a la planta a botar la flor prematuramente. Se propuso que este mecanismo promueve la diversidad gentica dentro de la poblacin.
546
Text in English.
650
Pollination by animals
Plants--Reproduction
Mimicry (Biology)
Costa Rica--Puntarenas--Monteverde Zone--San Luis
4
Polinizado por animales
Plantas--Reproduccin
Mimetismo (Biologa)
Costa Rica--Puntarenas--Zona de Monteverde--San Luis
653
Tropical Ecology Spring 2005
Ecologa Tropical Primavera 2005
655
Reports
720
CIEE
773
t Monteverde Institute : Tropical Ecology
856
u http://digital.lib.usf.edu/?m39.358


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