Dynamics of the association between a long-lived understory myrmecophyte and its specific associated ants
- 4 August 2010
- journal article
- research article
- Published by Springer Science and Business Media LLC in Oecologia
- Vol. 165 (2), 369-376
- https://doi.org/10.1007/s00442-010-1739-5
Abstract
Myrmecophytic symbioses are widespread in tropical ecosystems and their diversity makes them useful tools for understanding the origin and evolution of mutualisms. Obligate ant–plants, or myrmecophytes, provide a nesting place, and, often, food to a limited number of plant–ant species. In exchange, plant–ants protect their host plants from herbivores, competitors and pathogens, and can provide them with nutrients. Although most studies to date have highlighted a similar global pattern of interactions in these systems, little is known about the temporal structuring and dynamics of most of these associations. In this study we focused on the association between the understory myrmecophyte Hirtella physophora (Chrysobalanaceae) and its obligate ant partner Allomerus decemarticulatus (Myrmicinae). An examination of the life histories and growth rates of both partners demonstrated that this plant species has a much longer lifespan (up to about 350 years) than its associated ant colonies (up to about 21 years). The size of the ant colonies and their reproductive success were strongly limited by the available nesting space provided by the host plants. Moreover, the resident ants positively affected the vegetative growth of their host plant, but had a negative effect on its reproduction by reducing the number of flowers and fruits by more than 50%. Altogether our results are important to understanding the evolutionary dynamics of ant–plant symbioses. The highly specialized interaction between long-lived plants and ants with a shorter lifespan produces an asymmetry in the evolutionary rates of the interaction which, in return, can affect the degree to which the interests of the two partners converge.Keywords
This publication has 36 references indexed in Scilit:
- The evolution of intermediate castration virulence and ant coexistence in a spatially structured environmentEcology Letters, 2009
- Conflict over Reproduction in an Ant‐Plant Symbiosis: Why Allomerus octoarticulatus Ants Sterilize Cordia nodosa TreesThe American Naturalist, 2009
- Mechanisms driving the specificity of a myrmecophyte-ant associationBiological Journal of the Linnean Society, 2009
- Comparison between the Anatomical and Morphological Structure of Leaf Blades and Foliar Domatia in the Ant-plant Hirtella physophora (Chrysobalanaceae)Annals of Botany, 2008
- Tree life histories in a montane subtropical forest: species differ independently by shade‐tolerance, turnover rate and substrate preferenceJournal of Ecology, 2007
- A general model for the evolution of mutualismsJournal of Evolutionary Biology, 2006
- Ecology of an Improbable Association: The Pseudomyrmecine Plant‐antTetraponera tessmanniand the Myrmecophytic LianaVitex thyrsiflora(Lamiaceae) in Cameroon1Biotropica, 2005
- Parasites of mutualismsBiological Journal of the Linnean Society, 2001
- Amazonian ant–plant interactions and the nesting space limitation hypothesisJournal of Tropical Ecology, 1999
- Breakage and Regrowth of Piper Species in Rain Forest UnderstoryBiotropica, 1989