Biodiv Sci ›› 2008, Vol. 16 ›› Issue (6): 607-612.DOI: 10.3724/SP.J.1003.2008.08179

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Genetic diversity and evolution of Fujian domestic duck breeds

Huifang Li1,*(), Wenjuan Xu1, Wenqi Zhu1, Sumei Xue2, Kuanwei Chen1   

  1. 1 Institute of Poultry Science, Chinese Academy of Agricultural Sciences, Yangzhou 225003
    2 College of Animal Science, Fujian Agriculture and Forestry University, Fuzhou 350002
  • Received:2008-07-28 Accepted:2008-10-17 Online:2008-11-20 Published:2008-11-20
  • Contact: Huifang Li
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To study the genetic diversity and evolution of four breeds of Fujian domestic ducks, the 667 bp control region (D-loop) of mitochondrial DNA from 32 individual domestic ducks and eight spot-billed ducks (Anas zonorhyncha) were sequenced. The results showed that in the D-loop region of four domestic duck breeds, the content of A, G, C and T nucleotides was 25.5%, 15.2%, 33.5% and 25.8%, respectively. Eight haplotypes were found, in which Hap2 (consistent with haplotype A7 in GenBank) was dominant. The average haplotype diversity (Hd) and nucleotide diversity (Pi) of domestic ducks were 0.75202 and 0.21%, respectively. The Hdand Pi of Jinding duck was the highest among the four domestic duck breeds. Kimura 2-parameter genetic distance among the four duck breeds were 0.00094-0.00395. Combined with the sequences of mallard (A. platyrhynchos) and spot-billed ducks taken from GenBank, a total of 30 haplotypes were used in the phylogenetic analysis, and the results showed that the four domestic duck breeds originated from A. platyrhynchos.

Key words: domestic ducks, D-loop region, genetic diversity, evolution