Genetic Diversity, Population Structure And Population Demography Of Chinese Wild Boar (Sus Scrofa): A Microsatellite Analysis

The wild boar (Sus scrofa) which inhabited wide areas of continents except Antarctica or some islets had high adaptability to environment, is a fecund ancestral species of domestic pigs. In this paper, the microsatellite DNA variation was applied to discuss the genetic diversity, population structure and population demography of wild boars inhabited in Mainland of China, the results could be summarized as:1. A review of application about microsatellites in population genetic study was given.2. The genetic diversity level of Chinese wild boar is higher than European wild boar, Australian wild boar, and Chinese domestic pigs. This indicated the Chinese wild boar has long population history and larger effective population size than the European and Australian wild boar.3. The MDS based on F_st study showed that Yangtze River was not a barrier to the wild boar population migration, and North China Plain, Qinling Mountains and Great Xingan Mountains were barriers to wild boar populations. The result is in consonance with Li (2005) using mtDNA analyses. The FCA results showed there was no significant geographical dispersal or major taxonomic groups in Chinese wild boars, and the genetic divergence among wild boar was not significant using microsatellite data. The Chinese wild boar population departured from Hardy-Weinberg equilibrium caused by heterozygosity deficiency indicated that the wild boar population was subdivided for habitat fragmentation.