English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/58665
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:


The evolution of worker-queen polymorphism in Cataglyphis ants: Interplay between individual-and colony-level selections

AuthorsAmor, Fernando; Ortega, P.; Jowers, Michael J.; Cerdá, Xim ; Billen, J.; Lenoir, Alain; Boulay, Raphaël
Issue Date2011
CitationBehavioral Ecology and Sociobiology 65: 1473- 1482 (2011)
AbstractIn many ants, young queens disperse by flying away from their natal nest and found new colonies alone (independent colony founding, ICF). Alternatively, in some species, ICF was replaced by colony fission, in which young queens accompanied by workers found a new colony at walking distance from the mother nest. We compared the queen morphology of Cataglyphis floricola, which disperses by fission, with that of its most likely living ancestor, Cataglyphis emmae, which disperses by ICF. As in other species, the transition from ICF to fission is associated with queen miniaturization. Interestingly, C. floricola presents two types of small queens: brachypters (with short non-functional wings) and ergatoids (worker-like apterous queens). Ergatoids are, on average, 2.8 mg lighter and have half the number of ovarioles than brachypters, which limits the advantage for a colony to produce ergatoids instead of brachypters. Furthermore, more ergatoids are produced than brachypters, but their individual survival rate is lower. During colony fission, 96% of the cocoons containing brachypters but only 31% of those containing ergatoids are transferred to the daughter nests where, after emergence, they compete for becoming the next queen. The remaining queen cocoons, which stay in the mother queen's nest, are eliminated by workers upon emergence, probably to maintain monogyny. This waste of energy suggests that producing ergatoids instead of brachypters is unlikely to increase colony efficiency. We argue that the evolution of ergatoids could derive from a selfish larval strategy, developing into worker-like queens in spite of the colony interest. © 2011 Springer-Verlag.
Identifiersdoi: 10.1007/s00265-011-1157-7
issn: 0340-5443
Appears in Collections:(EBD) Artículos
Files in This Item:
File Description SizeFormat 
behav.pdf309,45 kBAdobe PDFThumbnail
Show full item record
Review this work

Related articles:

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.