Direct male-male competition can facilitate invasion of new colour types in Lake Victoria cichlids

@article{Dijkstra2005DirectMC,
  title={Direct male-male competition can facilitate invasion of new colour types in Lake Victoria cichlids},
  author={Peter D Dijkstra and Ole Seehausen and Ton G. G. Groothuis},
  journal={Behavioral Ecology and Sociobiology},
  year={2005},
  volume={58},
  pages={136-143}
}
The possibility that disruptive sexual selection alone can cause sympatric speciation is currently a subject of much debate. The initial difficulty for new and rare ornament phenotypes to invade a population, and the stabilisation of the resulting polymorphism in trait and preference make this hypothesis problematic. Recent theoretical work indicates that the invasion is facilitated if males with the new phenotype have an initial advantage in male-male competition. We studied a pair of… CONTINUE READING
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