Microsatellite and mitochondrial DNA assessment of the genetic diversity of captive Saiga antelopes （Saiga tatarica） in China

To estimate the genetic diversity of the only captive Saiga antelope （Saiga tatarica） population in China, 40 umbilical cord samples were collected and mitochondrial （control region） and nuclear （microsatellite） variabilities were assessed. Both of the markers revealed low genetic variability （or hi...

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Published in:中国科学通报：英文版 2013 (17), p.2163-2167
Main Author: ZHAO ShaSha XU ChaoQun LIU Gang LIU ShuQiang ZHAO ChongXue CUI YaXiong HU DeFu
Format: Article
Language:English
Subjects:
Shannon信息指数
中国人口
圈养
微卫星
线粒体DNA
评估
赛加羚羊
遗传多样性
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Summary:To estimate the genetic diversity of the only captive Saiga antelope （Saiga tatarica） population in China, 40 umbilical cord samples were collected and mitochondrial （control region） and nuclear （microsatellite） variabilities were assessed. Both of the markers revealed low genetic variability （or high genetic homogeneity） within the population. The microsatellites yielded monitoring ranges of 2-6 alleles. The observed heterozygosities ranged from 0.28 to 0.83, and the expected heterozygosities were between 0.27 and 0.71. The Shannon information index （Shannon I） and Polymorphic Information Content （PIC） presented overall means of 0.87 and 0.43, respectively. The gene diversity was 0.49. We found only two haplotypes in the population, and the haplotype and nucleotide diversities were 39.1% and 1.13%, respectively. Founder events, bottlenecks and inbreeding have contributed to the low genetic variation observed in this population. Our findings revealed the extent of genetic diversity maintained in the present population and the urgency of implementing a protection plan, introducing animals from other populations to enhance saiga＇s genetic variation.
ISSN:1001-6538
1861-9541