Fisheries Science

, 77:765 | Cite as

Impacts of hatchery release on genetic structure of rock carp Procypris rabaudi in the upper Yangtze River, China

  • Fei Cheng
  • Qingjiang Wu
  • Ming Liu
  • K. V. Radhakrishnan
  • Brian R. Murphy
  • Songguang Xie
Original Article Biology

Abstract

Rock carp Procypris rabaudi is a vulnerable endemic fish in the upper Yangtze River. Hatchery release has been carried out as a major stock enhancement strategy for this species. Ten microsatellite loci were chosen to compare genetic variation between one wild population and two hatchery groups to evaluate the potential impacts of hatchery release on the genetic structure of the wild population. Two different models indicated strong evidence of recent bottlenecks in all groups. The hatchery groups were lower in the mean number of alleles per locus, allelic richness, and allelic diversity compared with the wild population. The 80% membership coefficient indicated that 14% of the wild fish could be assigned as hybrids of wild and hatchery fish. Our results suggested that hatchery release will further reduce the natural genetic diversity in the wild population, change the genetic structure of the rock carp population, and may not benefit restoration of this vulnerable fish species.

Keywords

Genetic impacts Hatchery release Hybrid individual Microsatellite Procypris rabaudi Yangtze River 

Notes

Acknowledgments

This research was financially supported by the National Basic Research Program of China (973 Program, no. 2010CB429005), the Nature Conservancy, State Key Laboratory of Freshwater Ecology and Biotechnology (no. Y15C01), the Chinese Academy of Sciences Visiting Professorship for Senior International Scientists issued to B.R.M. (no. 2010T2S25) and the One-Hundred Talents Program of the Chinese Academy of Sciences issued to S.X. We would like to thank those who helped in sampling the rock carp: Yongbin Cheng, Yong Liao, and Eryou Jiang.

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Copyright information

© The Japanese Society of Fisheries Science 2011

Authors and Affiliations

  • Fei Cheng
    • 1
    • 2
    • 3
  • Qingjiang Wu
    • 1
  • Ming Liu
    • 1
    • 3
  • K. V. Radhakrishnan
    • 1
    • 3
  • Brian R. Murphy
    • 4
  • Songguang Xie
    • 1
    • 3
  1. 1.Key Laboratory of Biodiversity and Conservation of Aquatic Organisms, Institute of HydrobiologyChinese Academy of SciencesWuhanChina
  2. 2.Graduate School of the Chinese Academy of SciencesBeijingChina
  3. 3.Huaian Research Center, Institute of HydrobiologyChinese Academy of SciencesHuaianChina
  4. 4.The Department of Fisheries and Wildlife Sciences and Conservation Management InstituteVirginia Polytechnic Institute and State UniversityBlacksburgUSA

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