Speciation driven by natural selection in Drosophila

@article{Noor1995SpeciationDB,
  title={Speciation driven by natural selection in Drosophila},
  author={Mohamed A. F. Noor},
  journal={Nature},
  year={1995},
  volume={375},
  pages={674-675}
}
  • M. Noor
  • Published 22 June 1995
  • Biology, Medicine
  • Nature
REINFORCEMENT is the process by which natural selection strengthens sexual isolation between incipient species, reducing the frequency of maladaptive hybridization and hence completing reproductive isolation. Although this model of speciation was once widely accepted1,2, its plausibility3,4 and experimental support5–7 have been recently attacked. Here we provide an example of speciation by reinforcement, in the North American fruitfly Drosophila pseudoobscura. The results suggest that females… Expand
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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
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TLDR
This work has come up with the strongest evidence yet in favour of reinforcement, by studying divergent populations of the European flycatcher, and suggests that natural selection might act directly to increase reproductive isolation in these populations. Expand
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TLDR
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A BIOGEOGRAPHIC GENETIC APPROACH FOR TESTING THE ROLE OF REINFORCEMENT: THE CASE OF DROSOPHILA PSEUDOOBSCURA AND D. PERSIMILIS
TLDR
More parsimonious explanations such as reinforcement without genetic exchange (model II) and ecological differentiation, which require high levels of preexisting reproductive isolation between populations, are suggested. Expand
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TLDR
Understanding of the evolution of sexual isolation can be enhanced by isolating the roles of diverse ecological and evolutionary processes, and it is shown that sexual isolation involves, at least in part, olfactory communication. Expand
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TLDR
How this process can occur, the conditions under which it is most likely to occur, and the empirical data needed to evaluate the hypothesis that reinforcement can initiate speciation are described are described. Expand
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