Molecular genetic diversity and origin of Chinese domestic duck breeds

H.-F Li,J.-T Shu,W.-Q Zhu,W.-T Song,K.-W Chen,W Han

doi:10.5194/aab-53-609-2010

Abstract

Abstract. The 667 bp control region of mitochondrial DNA from 8 representative domestic duck breeds in China, which were all native preserved duck breeds, and a mallard (6 Anas zonorhyncha individuals) were sequenced. The genetic polymorphism and the origin of the 8 domestic ducks were analysed. The result showed that the haplotype diversity (Hd) and average nucleotide diversity (Pi) were 0.67136 and 0.19 %, respectively. Hd and Pi of Youxian Sheldrake were the highest in the 8 domestic duck breeds. Kimura-2 parameter genetic distance between the breeds ranged from 0.00056 to 0.00414. The NJ phylogenetic tree and reduced median-joining network chart were constructed by the total 38 haplotypes and 96 sequences, which included 12 sequences of Anas platyrhynchos from GenBank, 6 sequences of Anas zonorhyncha from GenBank and 78 sequences of this study (72 domestic ducks and 6 Anas zonorhyncha). The maternal origin of the 8 domestic ducks all originated from Anas platyrhynchos.

Highlights

The duck species belongs to the Anseriformes, Anatidae, Anas platyrhynchos domestic
The dualism view was that Chinese domestic ducks were originated from archaic Anas platyrhynchos and Anas zonorhyncha, domesticated in different areas respectively, or from the generations crossed by Anas platyrhynchos and Anas zonorhyncha (Qiu 1998, Chang 1995)
The 8 representative breeds including various breed types in China were selected in our study. In this survey, combined with the sequences of Anas platyrhynchos and Anas zonorhyncha, the mitochondrial DNA (mtDNA) D-loop sequences from 8 representative domestic duck breeds were amplified, sequenced, and analysed to reveal the diversity, origin and evolution of these breeds

Summary

Introduction

The duck species (domestic duck) belongs to the Anseriformes, Anatidae, Anas platyrhynchos domestic. Li et al.: Molecular genetic diversity and origin of Chinese domestic duck breeds The monadism view affirmed by overseas scholars was that Chinese domestic ducks were originated from wide Anas platyrhynchos.

Results

Conclusion