Present address: Nationaal Herbarium Nederland, Wageningen University Branch, and Biosystematics Group, Wageningen University and Research Centre, Generaal Foulkesweg 37, 6703 BL Wageningen, The Netherlands; E-mail: firstname.lastname@example.org.
MACROEVOLUTIONARY DATA SUGGEST A ROLE FOR REINFORCEMENT IN POLLINATION SYSTEM SHIFTS
Article first published online: 8 MAY 2007
Volume 60, Issue 8, pages 1596–1601, August 2006
How to Cite
van der Niet, T., Johnson, S. D. and Linder, H. P. (2006), MACROEVOLUTIONARY DATA SUGGEST A ROLE FOR REINFORCEMENT IN POLLINATION SYSTEM SHIFTS. Evolution, 60: 1596–1601. doi: 10.1111/j.0014-3820.2006.tb00504.x
- Issue published online: 8 MAY 2007
- Article first published online: 8 MAY 2007
- Received December 20, 2005. Accepted May 26, 2006.
- Cape flora;
- distribution ranges;
Abstract . Reproductive isolation can evolve either as a by-product of divergent selection or through reinforcement. We used the Cape flora of South Africa, known for its high level of pollination specialization, as a model system to test the potential role of shifts in pollination system in the speciation process. Comparative analysis of 41 sisterspecies pairs (representing Geraniaceae, Iridaceae, and Orchidaceae) for which complete pollinator, edaphic, and distribution data are available showed that for sister species with overlapping distribution ranges, pollination system shifts are significantly associated with edaphic shifts. In contrast, there is no significant association between pollination system shifts and edaphic shifts for allopatric sister species. These results are interpreted as evidence for reinforcement.