A Theoretical Investigation of Speciation by Reinforcement

@article{Spencer1986ATI,
  title={A Theoretical Investigation of Speciation by Reinforcement},
  author={Hamish G. Spencer and Brian McArdle and David M. Lambert},
  journal={The American Naturalist},
  year={1986},
  volume={128},
  pages={241 - 262}
}
The reinforcement model of speciation holds an important place in modern evolutionary thought. A closer examination of the model using a computer simulation reveals that there are a number of implicit assumptions necessary for reinforcement to work. 1. It requires that reproductive characters form part of an open genetic system with high heritability and that there is considerable variability within this system. 2. The two strains must coexist throughout the period in which selection is acting… Expand
SPECIATION BY REINFORCEMENT OF PREMATING ISOLATION
  • L. Liou, T. Price
  • Biology, Medicine
  • Evolution; international journal of organic evolution
  • 1994
TLDR
Computer simulations and a multilocus genetic model are used to reevaluate the theory of reinforcement and consider the evolution of female preferences for a male secondary sexual trait and the likelihood of extinction is lowered. Expand
Speciation by Natural and Sexual Selection: Models and Experiments
TLDR
It is shown that the geographical context of speciation can be viewed as a form of assortative mating and this provides a framework for interpreting results from laboratory experiments, which are found to agree generally with theoretical predictions about conditions that are favorable to the evolution of prezygotic isolation. Expand
Speciation by reinforcement.
  • R. Butlin
  • Biology, Chemistry
  • Trends in ecology & evolution
  • 1987
TLDR
The formation of new species must involve the evolution of barriers to gene flow within existing species, but how these barriers arise remains a problem and recent studies suggest serious limitations on the efficacy of reinforcing selection and a lack of well-substantiated examples. Expand
Reinforcement: the road not taken
TLDR
It is argued that traveling down The Road Not Taken (apologies to Frost), that is, taking into consideration mating system and patterns of gamete utilization, leads to novel and more precise predictions of the circumstances under which reinforcement should occur. Expand
Divergent Outcomes of Reinforcement Speciation: The Relative Importance of Assortative Mating and Migration Modification
TLDR
The results reveal that assortative mating may evolve faster and under a broader range of biological conditions than migration modification, however, direct evolutionary interactions favor migration modification when populations experience strong divergent selection. Expand
Conflict over fertilization underlies the transient evolution of reinforcement
TLDR
A population genetic model of interspecific conflict over reinforcement, inspired by ‘gametophytic factors’, is developed, which demonstrates that this conflict results in the transient evolution of reinforcement – after female preference for a conspecific gamete trait rises to high frequency, male traits adaptively introgress into the other population. Expand
Speciation by reinforcement: a model derived from studies of Drosophila.
TLDR
It is suggested that an increase in the level of female mating discrimination can yield reinforcement without further divergence of either male characters or female preferences, and selection on mating discrimination is a viable mechanism for reinforcement and may allow speciation under less stringent conditions than selection on female preference. Expand
Population genetic keys to speciation
TLDR
A general result on the joint evolution of underdominance in tness and positive assortative mating is used to evaluate the signicance of hybrid disadvantage and prezygotic incompatibility in speciation. Expand
Adaptive speciation: the role of natural selection in mechanisms of geographic and non-geographic speciation.
  • J. M. Baker
  • Biology, Medicine
  • Studies in history and philosophy of biological and biomedical sciences
  • 2005
TLDR
It is argued that the biological debate instead concerns the scope of particular speciation mechanisms which assign different roles to natural selection at various stages of divergence, and whether divergence with gene flow is possible (or significant) and whether the isolating mechanisms producing it are adaptive. Expand
Three Modes of Adaptive Speciation in Spatially Structured Populations
TLDR
This work incorporates both frequency-dependent competition and local adaptation into a single model and finds that the two mechanisms can operate together, leading to a third speciation mode in which speciation is initiated by selection against maladapted migrants but completed by within-deme competition in a distinct second phase. Expand
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