Acta Theriologica

, Volume 50, Issue 1, pp 23–30

Patterns of genetic variation within a captive population of Amur tigerPanthera tigris altaica

  • Dong Zheng
  • Xuedong Liu
  • Jianzhang Ma
Article

Abstract

Eight founders and thirty-one descendants were sampled as the Founder group and the Offspring group respectively from a captive population of Amur tigerPanthera tigris altaica Temminck, 1844 for population genetic analysis with RAPD and ISSR markers. Integrated with demographic data during the initial recovery stage, results showed: (1) increasing the population size (N) and the effective population size (Ne) greatly retard lose of genetic variation induced mainly by genetic drift and selection; (2) recombination and admixture could cause the Offspring group (5.711%) and the Founder group (10.383%) to hold different linkage disequilibrium (LD); (3) further Ohta’s variance analysis indicated genetic drift (87.3%) and epistatic selection (12.7%) maintained LD in population, whereas GENEDROP analysis supported epistatic selection largely derived from artificial selection of managers; (4) both Tajima’s test and Fu’s test confirmed the statistic neutrality of genetic markers used, moreover the positive value of Tajima’sD (0.090) together with the result that π (25.286) was bigger than ϑ (24.898) revealed the Founder group was admixture population, while the negative Tajima’sD value (−0.053) together with the result that π (23.679) was less than ϑ (23.912) disclosed the Offspring group experienced selective sweep.

Key words

Panthera tigris altaica gene diversity captive population linkage disequilibrium neutrality test 

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Copyright information

© Mammal Research Institute, Bialowieza, Poland 2005

Authors and Affiliations

  • Dong Zheng
    • 1
  • Xuedong Liu
    • 1
  • Jianzhang Ma
    • 1
  1. 1.College of Wildlife ResourcesNortheast Forestry UniversityHarbinChina

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