Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/327616
Type: Artigo
Title: Does Intraspecific Behavioural Variation Of Pollinator Species Influence Pollination? A Quantitative Study With Hummingbirds And A Neotropical Shrub
Author: Maruyama
P. K.; Justino
D. G.; Oliveira
P. E.
Abstract: Floral visitors differ in their efficacy as pollinators, and the impact of different pollinator species on pollen flow and plant reproduction has been frequently evaluated. In contrast, the impact of intraspecific behavioural changes on their efficacy as pollinators has seldom been quantified. We studied a self-incompatible shrub Palicourea rigida (Rubiaceae) and its hummingbird pollinators, which adjust their behaviour according to floral resource availability. Fluorescence microscopy was used to access pollen tube growth and incompatibility reaction in pistils after a single visit of territorial or intruder hummingbirds in two populations. To characterise the plant populations and possible differences in resource availability between areas we used a three-term quadrat variance method to detect clusters of floral resources. Within-species variation in foraging behaviour, but not species identity, affected pollinator efficacy. Effectively, hummingbirds intruding into territories deposited more compatible pollen grains on P. rigida stigmas than territory holders in both study areas. Additionally, territory holders deposited more incompatible than compatible pollen grains. Our results imply that intraspecific foraging behaviour variation has consequences for pollination success. Quantifying such variation and addressing the implications of intraspecific variability contribute to a better understanding of the dynamics and consequences of plant-pollinator interactions.
Subject: Amazilia Fimbriata
Cerrado
Palicourea Rigida
Pollen Tube
Pollinator Efficacy
Rubiaceae
Territorial Behaviour
Editor: Wiley-Blackwell
Hoboken
Rights: fechado
Identifier DOI: 10.1111/plb.12492
Address: http://onlinelibrary.wiley.com/doi/10.1111/plb.12492/abstract
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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