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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
One fig to bind them all: Host conservatism in a fig wasp community unraveled by cospeciation analyses among pollinating and nonpollinating fig wasps
Evolution, Volume 62, No. 7, Year 2008
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Description
The study of chalcid wasps that live within syconia of fig trees (Moraceae, Ficus), provides a unique opportunity to investigate the evolution of specialized communities of insects. By conducting cospeciation analyses between figs of section Galoglychia and some of their associated fig wasps, we show that, although host switches and duplication have evidently played a role in the construction of the current associations, the global picture is one of significant cospeciation throughout the evolution of these communities. Contrary to common belief, nonpollinating wasps are at least as constrained as pollinators by their host association in their diversification in this section. By adapting a randomization test in a supertree context, we further confirm that wasp phylogenies are significantly congruent with each other, and build a "wasp community" supertree that retrieves Galoglychia taxonomic subdivisions. Altogether, these results probably reflect wasp host specialization but also, to some extent, they might indicate that niche saturation within the fig prevents recurrent intrahost speciation and host switching. Finally, a comparison of ITS2 sequence divergence of cospeciating pairs of wasps suggests that the diversification of some pollinating and nonpollinating wasps of Galoglychia figs has been synchronous but that pollinating wasps exhibit a higher rate of molecular evolution. © 2008 The Author(s).
Authors & Co-Authors
Jousselin, Emmanuelle
France, Montpellier
Inrae's Occitanie-montpellier Centre
van Noort, Simon
South Africa, Cape Town
Iziko South African Museum
Berry, Vincent
France, Montpellier
Laboratoire D'informatique, de Robotique et de Microélectronique de Montpellie
Rasplus, Jean Yves
France, Montpellier
Inrae's Occitanie-montpellier Centre
Rønsted, Nina A.
United Kingdom, Richmond
Jodrell Laboratory
Erasmus, J. Christoff
South Africa, Pretoria
University of Pretoria
Greeff, Jaco M.
South Africa, Pretoria
University of Pretoria
Statistics
Citations: 107
Authors: 7
Affiliations: 5
Identifiers
Doi:
10.1111/j.1558-5646.2008.00406.x
e-ISSN:
15585646
Study Design
Randomised Control Trial
Study Approach
Qualitative