Genetic Effects of Captive Breeding Cause a Rapid, Cumulative Fitness Decline in the Wild

@article{Araki2007GeneticEO,
  title={Genetic Effects of Captive Breeding Cause a Rapid, Cumulative Fitness Decline in the Wild},
  author={Hitoshi Araki and Becky Cooper and Michael Scott Blouin},
  journal={Science},
  year={2007},
  volume={318},
  pages={100 - 103}
}
Captive breeding is used to supplement populations of many species that are declining in the wild. The suitability of and long-term species survival from such programs remain largely untested, however. We measured lifetime reproductive success of the first two generations of steelhead trout that were reared in captivity and bred in the wild after they were released. By reconstructing a three-generation pedigree with microsatellite markers, we show that genetic effects of domestication reduce… 
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827 Citations

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Maternal effects can inflate rate of adaptation to captivity

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    Proceedings of the National Academy of Sciences
  • 2012
Christie et al. (3) inferred evolutionary change in a single generation of maintenance in captivity of a wild steelhead population by using a multigenerational pedigree analysis to demonstrate that domestication selection can explain the precipitous decline in fitness observed in hatchery steelhead released into the Hood River in Oregon.

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53 References

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The results suggest that the apparent short-term demographic advantages of a supplementation program can be quite deceiving and that long-term supplementation programs are expected to result in genetic transformations that can eventually lead to natural populations that are no longer capable of sustaining themselves.

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