Molecular Phylogeny and Phylogeography of Suidae
摘要
Although the Suidae animals were one of the most prosperous mammals, their taxa and phylogeny were poorly studied. To bridge this research gap, the complete mit ochondrial DNA cyt b sequences (1 140 bp)of one red river pig (Potamochoer us porcus), one bearded pig (Sus barbatus), and several Eurasian wild boar s (Sus scorfa) were determined with direct PCR sequencing method. Incorporat ed with the sequences of other Suidae species obtained from GenBank, the phyloge ntic trees of Suidae species were constructed by Neighbor-Joining and Most Pars imony method. Our results showed that the babirousa was sister group of all othe r species. The African species clustered into a single clade, while the Eurasian species formed the other clade. The phylogenetic positions of the Sus speci es were consistent with their geographical distribution. Based on our phylogeogr aphical results, the Sus species could be classified into three groups: (1) the relatively primitive animals from Philippine Islands (such as S. cebifrons and S. philippensis), Sulawesi and it's adjacent islands (S. celebensis), (2) the Eurasian wild boars (S. scrofa and the mysterious S. salva nius), and (3) other pigs (such as S. barbatus and S. verrucosus), whi ch might further diverged as the islands type (such as S. barbatus from Suma tra and Borneo) and the continental type (such as Malay Peninsula wild boar).