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Genetic Consequences of Range Expansions

Excoffier, Laurent, Foll, Matthieu, Petit, Rémy J.·2009·Annual Review of Ecology, Evolution, and Systematics

Abstract

Although range expansions have occurred recurrently in the history of most species, their genetic consequences have been little investigated. Theoretical studies show that range expansions are quite different from pure demographic expansions and that the extent of recent gene flow conditions expected patterns of molecular diversity within and between populations. Spatially explicit simulation studies have led to unexpected and fascinating results about genetic patterns emerging after a range expansion. For instance, spatial expansions can generate allele frequency gradients, promote the surfing of rare variants into newly occupied territories, induce the structuring of newly colonized areas into distinct sectors of low genetic diversity, or lead to massive introgression of local genes into the genome of an invading species. Interestingly, most of these patterns had been previously attributed to distinct selective processes, showing that taking into account the dynamic nature of a species range can lead to a paradigm shift in our perception of evolutionary processes.

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Metadata

Authors
Excoffier, L., Foll, M., & Petit, R. J.
Venue
Annual Review of Ecology, Evolution, and Systematics
Published
2009-12-01
Volume
40
Issue
1
Pages
481-501
ISSN
  • 1543-592X (ISSN-L)
  • 1545-2069
OpenAlex
W2113401798
Cited by
1,341
References
5
FWCI
4.25
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Genetic Consequences of Range Expansions. https://app.cochat.ai/papers/10.1146/annurev.ecolsys.39.110707.173414
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Excoffier, L., Foll, M., & Petit, R. J. (2009). Genetic Consequences of Range Expansions. Annual Review of Ecology, Evolution, and Systematics. https://doi.org/10.1146/annurev.ecolsys.39.110707.173414

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