Biodiv Sci ›› 2008, Vol. 16 ›› Issue (6): 533-538.DOI: 10.3724/SP.J.1003.2008.08105

• Editorial • Previous Articles     Next Articles

A comparison of genetic diversity between wild and cultured populations of the Chinese giant salamander, Andrias davidianus, based on microsa-tellite analyses

Yan Meng, Yanqing Yang, Yan Zhang, Hanbing Xiao*   

  1. 1 Key Laboratory of Freshwater Ecology and Healthy Aquaculture, Chinese Academy of Fishery Sciences, Jingzhou,
    Hubei 434000
    2 Key Laboratory of Freshwater Biodiversity Conservation and Utilization, Ministry of Agriculture, Yangtze River Fish-eries Research Institute, Chinese Academy of Fishery Sciences, Jingzhou, Hubei 434000
  • Online:2008-11-20 Published:2008-11-20
  • Contact: Hanbing Xiao

Abstract: The Chinese giant salamander (Andrias davidianus) is world’s largest amphibian and is endemic to China. Wild populations of the species have declined drastically, while domesticated populations have increased in recent years. To estimate genetic variation in the Chinese giant salamander, we analyzed ten microsatellite loci of 44 individuals from two wild and one domesticated populations. A total of 52 alleles were found from seven loci shown to be polymorphic. The number of alleles ranged from 6 to 9 (mean 7.4). The polymorphism information content (PIC) of all populations at all loci exceeded 0.54 except the YQY at GS134 (0.3750), suggesting high polymorphism at microsatellite markers. Compared with the wild popula-tions, some alleles in the domesticated population were drifted and the PIC was lower. Our results may pro-vide a theoretical basis for conservation and exploitation of giant salamanders in China.

Key words: Brassica napus, EST-SSR, polymorphism, genetic distance, cluster analysis