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How important is intraspecific genetic admixture to the success of colonising populations?

How important is intraspecific genetic admixture to the success of colonising populations?
How important is intraspecific genetic admixture to the success of colonising populations?
Genetic admixture of divergent intraspecific lineages is increasingly suspected to have an important role in the success of colonising populations. However, admixture is not a universally beneficial genetic phenomenon. Selection is typically expected to favour locally adapted genotypes and can act against admixed individuals, suggesting that there are some conditions under which admixture will have negative impacts on population fitness. Therefore, it remains unclear how often admixture acts as a true driver of colonisation success. Here, we review the population consequences of admixture and discuss its costs and benefits across a broad spectrum of ecological contexts. We critically evaluate the evidence for a causal role of admixture in successful colonisation, and consider that role more generally in driving population range expansion.
0169-5347
233-242
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Darling, John A.
62153b55-176a-4909-8925-a7374af27bb1
Rius, Marc
c4e88345-4b4e-4428-b4b2-37229155f68d
Darling, John A.
62153b55-176a-4909-8925-a7374af27bb1

Rius, Marc and Darling, John A. (2014) How important is intraspecific genetic admixture to the success of colonising populations? Trends in Ecology & Evolution, 29, (4), pp. 233-242. (doi:10.1016/j.tree.2014.02.003).

Record type: Article

Abstract

Genetic admixture of divergent intraspecific lineages is increasingly suspected to have an important role in the success of colonising populations. However, admixture is not a universally beneficial genetic phenomenon. Selection is typically expected to favour locally adapted genotypes and can act against admixed individuals, suggesting that there are some conditions under which admixture will have negative impacts on population fitness. Therefore, it remains unclear how often admixture acts as a true driver of colonisation success. Here, we review the population consequences of admixture and discuss its costs and benefits across a broad spectrum of ecological contexts. We critically evaluate the evidence for a causal role of admixture in successful colonisation, and consider that role more generally in driving population range expansion.

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More information

Accepted/In Press date: 15 March 2014
Published date: April 2014
Organisations: Ocean and Earth Science

Identifiers

Local EPrints ID: 363147
URI: http://eprints.soton.ac.uk/id/eprint/363147
ISSN: 0169-5347
PURE UUID: a1a7ee0f-30e5-42f8-b487-8263dfbc99f3

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Date deposited: 17 Mar 2014 11:41
Last modified: 18 Jul 2017 02:43

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Contributors

Author: Marc Rius
Author: John A. Darling

University divisions

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