Genetic diversity of Chinese giant salamander (Andrias davidianus) based on the novel microsatellite markers
文献类型： 外文期刊
作者： Meng, Y. 1 ; Zhang, Y. 2 ; Liang, H. W. 2 ; Xiao, H. B. 2 ; Xie, C. X. 1 ;
作者机构： 1.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
2.Chinese Acad Fishery Sci, Yangtze River Fisheries Res Inst, Wuhan 43022, Peoples R China
期刊名称：RUSSIAN JOURNAL OF GENETICS （ 影响因子：0.581； 五年影响因子：0.729 ）
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收录情况： SCI
摘要： Chinese giant salamander (Andrias davidianus) is a rare amphibian species in the world. Microsatellite markers are a promising tool for accurate estimation population structure and genetic diversity. In this paper, we isolated novel microsatellite marker for Chinese giant salamander using fast isolation by AFLP of sequences containing repeats (FIASCO) method. More than 50% sequences in 132 clones had repeat number over ten times with di or trinucleeotide repeat except of (GA)_(12). Seventy pairs of primers were designed and eleven polymorphic microsatellite loci were characterized for wild and cultivated Chinese giant salamander populations. The allele number was from 3 to 9 in different loci. Polymorphism information content was from 0. 544 to 0. 702 in cultivated population. The results implied more alleles and PIC were in the wild population than cultivated population. The observed heterozygosities in two populations were higher than 0. 553. The data analysis suggested that the cultivated population has lower genetic diversity than wild population, which it's perhaps owing to inbreeding in artificial breeding. To our knowledge, it's the first time to isolated microsatellite markers for Chinese giant salamander. The result indicated that the markers were suitable for the population genetic analysis of Chinese giant salamander.
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