Figure 1.
Sampling locations used in the study.
Codes 1–7 represent the Tibetan pig populations of Shannan, Linzhi, Changdu, Diqing, Ganzi, Aba and Hezuo, respectively. Codes 8–12 represent the Yunnan pig populations of Baoshan, Diannanxiaoer, Gaoligongshan, Saba and Wujin, respectively.
Table 1.
Haplotype distribution between domestic pigs and wild boars.
Figure 2.
Median joining networks of haplogroup M in the Pacific Islands (A), ISEA (B), Yunnan (C) and SEA (D) regions.
The haplotypes are symbolized by circles and separated by one substitutional step. The length of each branch is proportional to the number of associated mutations. The size of the circle is proportional to the frequency of the haplotype and the white and black areas of the circle represent the proportion of this frequency made up by domestic pigs and wild boars respectively. Subgroup M2 is identified in B, C and D, and subgroup M3 in A, B, C and D.
Figure 3.
Median joining networks of the M1 subgroup.
The haplotypes are symbolized by circles and are separated by one substitutional step. The length of each branch is proportional to the number of associated mutations. The four core haplotypes are indicated with bold lines. The size of the circle is proportional to the frequency of the haplotype and the white and black areas of the circle represent the proportion of this frequency made up by domestic pigs and wild boars. Three large red dots represent the three diversity centers of the Tibetan highlands, Southeastern Asia (SEA) and the middle and down stream region of the Yangtze River (MDYZ). The other 12 regions exhibited diversities that decreased along a gradient (see Table 2 for regional diversity). The abbreviations for the regions are explained in the main text.
Table 2.
Regional distributions of core haplotypes, derived haplotypes and unique haplotypes of domestic pigs and wild boars within subgroup M1.