Comparative phylogeography of an ant-plant mutualism: an encounter in the Andes

  • Sanchez Andrade, Adriana (Coinvestigador)
  • Richardson, James Edward (Coinvestigador)
  • Torres, María Fernanda (Estudiante)
  • Stone, Graham (Coinvestigador)

    Proyecto: Proyecto de Investigación

    Detalles del proyecto

    Descripción

    Evolutionary processes in ant-plant mutualisms are mediated by intrinsic features of the association and by change through time in abiotic components of the system (e.g. geography and climate). Incorporating both biotic and abiotic components and the phylogenies of the taxa involved is central to understanding their respective roles in mutualism evolution. We used a comparative phylogeographic approach to assess the effects of the Andean uplift on the mutualism between ¬Azteca ants and an ant plant, Tococa guianensis, and to ask whether plant and ant diversification were promoted by geography or by the association. We used a combination of nuclear and organellar sequence data to resolve relationships between populations of ants and plants at sites spanning the northern Andes Cordillera in Colombia. To test for phylogenetic and chronological congruence between taxa and major uplift events, we used fossil calibrations and estimated the timing of diversification. We found phylogeographic structure in both Azteca and T. guianensis that coincides spatially and temporally with peaks of activity during the Andean uplift. However, lineage divergence occurs earlier in Azteca than in T. guianensis. We suggest that the Andean uplift had a greater impact on lineage diversification than the mutualism.
    EstadoFinalizado
    Fecha de inicio/Fecha fin1/1/1612/31/22

    Objetivos de desarrollo sostenible de las Naciones Unidas

    En 2015, los estados miembros de las Naciones Unidas acordaron 17 Objetivos de desarrollo sostenible (ODS) globales para erradicar la pobreza, proteger el planeta y garantizar la prosperidad para todos. Este proyecto contribuye al logro de los siguientes ODS:

    • ODS 15: Vida de ecosistemas terrestres

    Fuente principal de financiación

    • Capacidad Instalada (Unidad Académica)

    Localización

    • Bogotá D.C.

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