Please use this identifier to cite or link to this item:
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Division of labour within flowers: heteranthery, a floral strategy to reconcile contrasting pollen fates
Authors: Vallejo-Marin, Mario
Manson, Jessamyn S
Thomson, James D
Barrett, Spencer C H
Contact Email:
Keywords: bee pollination
Bombus impatiens
evolutionary stable strategy
nectarless flowers
Solanum rostratum
stamen functions
Issue Date: Apr-2009
Publisher: Blackwell Publishing / European Society for Evolutionary Biology (ESEB)
Citation: Vallejo-Marin M, Manson JS, Thomson JD & Barrett SCH (2009) Division of labour within flowers: heteranthery, a floral strategy to reconcile contrasting pollen fates, Journal of Evolutionary Biology, 22 (4), pp. 828-839.
Abstract: In many nectarless flowering plants, pollen serves as both the carrier of male gametes and as food for pollinators. This can generate an evolutionary conflict if the use of pollen as food by pollinators reduces the number of gametes available for cross-fertilization. Heteranthery, the production of two or more stamen types by individual flowers reduces this conflict by allowing different stamens to specialize in ‘pollinating’ and ‘feeding’ functions. We used experimental studies of Solanum rostratum (Solanaceae) and theoretical models to investigate this ‘division of labour’ hypothesis. Flight cage experiments with pollinating bumble bees (Bombus impatiens) demonstrated that although feeding anthers are preferentially manipulated by bees, pollinating anthers export more pollen to other flowers. Evolutionary stability analysis of a model of pollination by pollen consumers indicated that heteranthery evolves when bees consume more pollen than should optimally be exchanged for visitation services, particularly when pollinators adjust their visitation according to the amount of polle
Type: Journal Article
DOI Link:
Rights: Published in Journal of Evolutionary Biology. Copyright: Blackwell Publishing. The definitive version is available at
Affiliation: Biological and Environmental Sciences
University of Toronto
University of Toronto
University of Toronto

Files in This Item:
File Description SizeFormat 
Vallejo-Marin et al_Rev2.doc598 kBMicrosoft WordView/Open
Vallejo-Marin et al_Rev2.pdf379.62 kBAdobe PDFView/Open

This item is protected by original copyright

Items in the Repository are protected by copyright, with all rights reserved, unless otherwise indicated.

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.