Strong reproductive skew among males in the multiply mated swordtail Xiphophorus multilineatus (Teleostei).

@article{Luo2005StrongRS,
  title={Strong reproductive skew among males in the multiply mated swordtail Xiphophorus multilineatus (Teleostei).},
  author={Jing Luo and Matthias Sanetra and Manfred Schartl and Achim Meyer},
  journal={The Journal of heredity},
  year={2005},
  volume={96 4},
  pages={346-55}
}
Male swordtails in the genus Xiphophorus display a conspicuous ventral elongation of the caudal fin, the sword, which arose through sexual selection due to female preference. Females mate regularly and are able to store sperm for at least 6 months. If multiple mating is frequent, this would raise the intriguing question about the role of female choice and male-male competition in shaping the mating system of these fishes. Size-dependent alternate mating strategies occur in Xiphophorus; one such… CONTINUE READING
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