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Population Structure and Biodiversity of Chinese Indigenous Duck Breeds Revealed by 15 Microsatellite Markers

  • Liu, W. (Department of Animal Genetics and Breeding, College of Animal Science and Technology China Agricultural University) ;
  • Hou, Z.C. (Department of Animal Genetics and Breeding, College of Animal Science and Technology China Agricultural University) ;
  • Qu, L.J. (Department of Animal Genetics and Breeding, College of Animal Science and Technology China Agricultural University) ;
  • Huang, Y.H. (State Key Laboratory for AgroBiotechnology, China Agricultural University) ;
  • Yao, J.F. (Department of Animal Genetics and Breeding, College of Animal Science and Technology China Agricultural University) ;
  • Li, N. (State Key Laboratory for AgroBiotechnology, China Agricultural University) ;
  • Yang, N. (Department of Animal Genetics and Breeding, College of Animal Science and Technology China Agricultural University)
  • Received : 2007.02.09
  • Accepted : 2007.08.26
  • Published : 2008.03.01

Abstract

Duck (Anas platyrhynchos) is one of the most important domestic avian species in the world. In the present research, fifteen polymorphic microsatellite markers were used to evaluate the diversity and population structure of 26 Chinese indigenous duck breeds across the country. The Chinese breeds showed high variation with the observed heterozygosity (Ho) ranging from 0.401 (Jinding) to 0.615 (Enshi), and the expected heterozygosity (He) ranging from 0.498 (Jinding) to 0.707 (Jingjiang). In all of the breeds, the values of Ho were significantly lower than those of He, suggesting high selection pressure on these local breeds. AMOVA and Bayesian clustering analysis showed that some breeds had mixed together. The FST value for all breeds was 0.155, indicating medium differentiation of the Chinese indigenous breeds. The FST value also indicated the short domestication history of most of Chinese indigenous ducks and the admixture of these breeds after domestication. Understanding the genetic relationship and structure of these breeds will provide valuable information for further conservation and utilization of the genetic resources in ducks.

Keywords

Duck;Population Structure;Biodiversity;Microsatellites

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