Department of Biological Sciences, Simon Fraser University, Burnaby, BC, Canada.
Trends Ecol Evol. 2013 Jan;28(1):48-57. doi: 10.1016/j.tree.2012.08.015. Epub 2012 Sep 18.
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.
最近有一系列引人注目的基因组冲突形式被牵涉到物种形成中。我们提出，这些基因组冲突在物种形成过程中的不同作用可以用“冲突性物种形成”的概念来统一。冲突性物种形成的核心是生殖隔离的进化，这是基因组元素之间具有不同适应利益的拮抗选择的副产品。由于对立元素之间的种群特异性相互作用，种内冲突预计会很容易产生 Dobzhansky-Muller 不相容性，因此它们在物种形成中可能尤为重要。此外，基因组冲突的选择应该在生态和进化时间尺度上相对持续不断。我们解释了种内冲突如何促进或有时限制物种形成，并描述了与冲突相关的生殖隔离进化的证据。
