Conflictual speciation: species formation via genomic conflict

Crespi, B. and Nosil, P. (2013) Conflictual speciation: species formation via genomic conflict. Trends in Ecology & Evolution, 28 (1). pp. 48-57.

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Abstract

A remarkable suite of forms of genomic conflict has recently been implicated in speciation. We propose that these diverse roles of genomic conflict in speciation processes can be unified using the concept of ‘conflictual speciation’. Conflictual speciation centers on the evolution of reproductive isolation as a byproduct of antagonistic selection among genomic elements with divergent fitness interests. Intragenomic conflicts are expected to readily generate Dobzhansky–Muller incompatibilities, due to population-specific interactions between opposing elements, and thus they could be especially important in speciation. Moreover, selection from genomic conflicts should be relatively unrelenting across ecological and evolutionary time scales. We explain how intragenomic conflicts can promote, or sometimes constrain, speciation, and describe evidence relating conflicts to the evolution of reproductive isolation.

Item Type:	Article
Additional Information:	funded by the European Research Council (Starter Grant NatHisGen), and B.C. thanks NSERC for support. [Appendix A. Supplementary data Supplementary data associated with this article can be found at http://dx.doi.org/10.1016/j.tree.2012.08.015.]
Uncontrolled Keywords:	speciation; intragenomic conflict; reproductive isolation; genomic conflict; post-zygotic isolation
Author Affiliation:	Department of Biological Sciences, Simon Fraser University, Burnaby, B.C. V5A 1S6, Canada
Subjects:	Crop Improvement > Genetics/Genomics
Divisions:	General
Depositing User:	Mr Siva Shankar
Date Deposited:	18 Mar 2014 09:43
Last Modified:	18 Mar 2014 09:43
Official URL:	http://dx.doi.org/10.1016/j.tree.2012.08.015
URI:	http://eprints.icrisat.ac.in/id/eprint/12902

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