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Ecological Divergence and the Origins of Intrinsic Postmating Isolation with Gene Flow
Joint Authors
Nosil, Patrik
Feder, Jeffrey L.
Agrawal, Aneil F.
Source
International Journal of Ecology
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-08-22
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Biology
Abstract EN
The evolution of intrinsic postmating isolation has received much attention, both historically and in recent studies of speciation genes.
Intrinsic isolation often stems from between-locus genetic incompatibilities, where alleles that function well within species are incompatible with one another when brought together in the genome of a hybrid.
It can be difficult for such incompatibilities to originate when populations diverge with gene flow, because deleterious genotypic combinations will be created and then purged by selection.
However, it has been argued that if genes underlying incompatibilities are themselves subject to divergent selection, then they might overcome gene flow to diverge between populations, resulting in the origin of incompatibilities.
Nonetheless, there has been little explicit mathematical exploration of such scenarios for the origin of intrinsic incompatibilities during ecological speciation with gene flow.
Here we explore theoretical models for the origin of intrinsic isolation where genes subject to divergent natural selection also affect intrinsic isolation, either directly or via linkage disequilibrium with other loci.
Such genes indeed overcome gene flow, diverge between populations, and thus result in the evolution of intrinsic isolation.
We also examine barriers to neutral gene flow.
Surprisingly, we find that intrinsic isolation sometimes weakens this barrier, by impeding differentiation via ecologically based divergent selection.
American Psychological Association (APA)
Agrawal, Aneil F.& Feder, Jeffrey L.& Nosil, Patrik. 2011. Ecological Divergence and the Origins of Intrinsic Postmating Isolation with Gene Flow. International Journal of Ecology،Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-472021
Modern Language Association (MLA)
Agrawal, Aneil F.…[et al.]. Ecological Divergence and the Origins of Intrinsic Postmating Isolation with Gene Flow. International Journal of Ecology No. 2011 (2011), pp.1-15.
https://search.emarefa.net/detail/BIM-472021
American Medical Association (AMA)
Agrawal, Aneil F.& Feder, Jeffrey L.& Nosil, Patrik. Ecological Divergence and the Origins of Intrinsic Postmating Isolation with Gene Flow. International Journal of Ecology. 2011. Vol. 2011, no. 2011, pp.1-15.
https://search.emarefa.net/detail/BIM-472021
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-472021