Competition for pollinators and intracommunal spectral dissimilarity of flowers

Détails

ID Serval
serval:BIB_9F804C19D92C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Competition for pollinators and intracommunal spectral dissimilarity of flowers
Périodique
Plant Biology
Auteur(s)
van der Kooi  Casper J., Pen  Ido, Staal  Marten, Stavenga  Doekele G., Elzenga  J.Theo M.
Statut éditorial
Publié
Date de publication
2016
Volume
18
Numéro
1
Pages
56-62
Langue
anglais
Résumé
Competition for pollinators occurs when in a community of flowering plants several simultaneously flowering plant species depend on the same pollinator. Competition for pollinators increases interspecific pollen transfer rates, thereby reducing the number of viable offspring. In order to decrease interspecific pollen transfer, plant species can distinguish themselves from competitors by having a divergent phenotype. Floral colour is an important signalling cue to attract potential pollinators and thus a major aspect of the flower phenotype. In this study we analyse the amount of spectral dissimilarity of flowers among pollinator-competing plants in a Dutch nature reserve. We expected pollinator-competing plants to exhibit more spectral dissimilarity than non-competing plants. Using flower-visitation data of two years we determined the amount of competition for pollinators by different plant species. Plant species that were visited by the same pollinator were considered specialist and competing for that pollinator, whereas plant species visited by a broad array of pollinators were considered non-competing generalists. We used principal component analysis to quantify floral reflectance and we found evidence for enhanced spectral dissimilarity among plant species within specialist pollinator guilds (i.e. groups of plant species competing for the same pollinator). This is the first study that examines intracommunal dissimilarity in floral reflectance with a focus on the pollination system.
Mots-clé
Reproductive character displacement, flower coloration, biotic interactions, plant-pollinator signalling, principal component analysis
Création de la notice
12/03/2015 17:51
Dernière modification de la notice
20/08/2019 15:05
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