Conservation Genetics

, Volume 7, Issue 1, pp 117–127

Phylogeography and Origin of Sheep Breeds in Northern China

Authors

    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
    • Departments of Molecular Cardiology and Cardiovascular MedicineThe Cleveland Clinic Foundation
    • Department of BioinformaticsHarbin Medical University
  • Shen-Jin Lu
    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
    • Linyi Normal University
  • Guan-Yu Hou
    • College of Animal Science and VeterinaryInner Mongolia Agricultural University
  • Wei-Jun Guan
    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
  • Hong-Bin Li
    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
  • Xia Li
    • Department of BioinformaticsHarbin Medical University
  • Qian-Jun Zhao
    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
  • Jun Guo
    • Division of Animal Resources and ConservationInstitute of Animal Science, Chinese Academy of Agricultural Sciences
Article

DOI: 10.1007/s10592-005-8670-z

Cite this article as:
Ma, Y., Rao, S., Lu, S. et al. Conserv Genet (2006) 7: 117. doi:10.1007/s10592-005-8670-z

Abstract

With the establishment of modern sheep production systems in China, various forms of hybridization with Western breeds and between native breeds have been utilized for genetic improvement. At the same time, the progressive destruction or deterioration of sheep habitat has accompanied urbanization in China. Together these factors have accelerated the loss of genetic diversity, or even resulted in the extinction of some indigenous breeds. It is therefore important that efficient strategies for surveillance, evaluation, conservation and utilization of available genetic resources are developed for this species. In this study, a total of 30 microsatellite markers were used to assess genetic diversity for 12 native breeds and one Western sheep breed in Northern China. The high polymorphism information contents at the 30 markers, varying from averages of 0.519 to 0.666 for the 13 breeds, imply the retention of natural variation from source populations in the domestic breeds from different geographic regions in China. Analysis of genetic differentiation revealed substantial divergence among these breeds. Neutrality tests indicated that more than one third of the 30 loci were in departure from neutrality, implying that some evolutionary forces (e.g. selection and migration) had acted on these populations. Phylogenetic and phylogeographic analyses displayed a remarkable degree of consistency between geographic origins, breeding histories and the pattern of genetic differentiation.

Keywords

genetic distancegenetic diversitymicrosatellitephylogeographysheep

Copyright information

© Springer 2006