Article
A continuum of genetic divergence from sympatric host races to species in the pea aphid complex.
Proceedings of the National Academy of Sciences of the United States of America - 5 May 2009
Peccoud Jean, Ollivier Anthony, Plantegenest Manuel, Simon Jean-Christophe
Abstract excerpt
Sympatric populations of insects adapted to different host plants, i.e., host races, are good models to investigate how natural selection can promote speciation in the face of ongoing gene flow. However, host races are documented in very few model systems and their gradual evolution into good species, as assumed under a Darwinian view of species formation, lacks strong empirical support. We aim at resolving this...
Topics
- Base Sequence
- Ecology
- Gene Flow
- Genetic Variation
- Molecular Sequence Data
- Pisum sativum
- Phylogeny
- Reproduction