Oecologia

, Volume 165, Issue 2, pp 369–376

Dynamics of the association between a long-lived understory myrmecophyte and its specific associated ants

  • Jérôme Orivel
  • Luc Lambs
  • Pierre-Jean G. Malé
  • Céline Leroy
  • Julien Grangier
  • Thierry Otto
  • Angélique Quilichini
  • Alain Dejean
Population ecology - Original Paper

DOI: 10.1007/s00442-010-1739-5

Cite this article as:
Orivel, J., Lambs, L., Malé, PJ.G. et al. Oecologia (2011) 165: 369. doi: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

Allomerus decemarticulatus Hirtella physophora Lifespan Mutualism Myrmecophyte 

Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  • Jérôme Orivel
    • 1
  • Luc Lambs
    • 2
    • 3
  • Pierre-Jean G. Malé
    • 4
    • 5
  • Céline Leroy
    • 1
  • Julien Grangier
    • 4
    • 5
  • Thierry Otto
    • 2
    • 3
  • Angélique Quilichini
    • 1
    • 6
  • Alain Dejean
    • 1
  1. 1.CNRS, UMR Ecologie des Forêts de GuyaneKourou CedexFrance
  2. 2.Université de Toulouse, UPS, INPT, EcoLab (Laboratoire d’Ecologie Fonctionnelle)ToulouseFrance
  3. 3.CNRS, EcoLab (Laboratoire d’Ecologie Fonctionnelle)ToulouseFrance
  4. 4.Université de Toulouse, UPS, EDB (Laboratoire Evolution et Diversité Biologique)ToulouseFrance
  5. 5.CNRS, EDB (Laboratoire Evolution et Diversité Biologique)ToulouseFrance
  6. 6.Jardin Botanique Henri GaussenToulouseFrance

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