Department of Animal Sciences, Shanghai Jiao Tong University, China.
Biochem Genet. 2010 Dec;48(11-12):924-37. doi: 10.1007/s10528-010-9373-9. Epub 2010 Aug 27.
There are extensive debates concerning the origin and the necessity of conservation of Pudong White pigs in the Taihu region of China. To elucidate their genetic ancestry, we sequenced the complete mtDNA D-loop sequences of 25 Pudong White pigs and 9 Shawutou pigs from the Taihu region and reanalyzed 158 published sequences of other breeds in GenBank. Haplotypes of all pigs were classified into two clades, A and E, but Pudong White pigs were found only in clade A. The results of population differentiation demonstrated that there were few genetic exchanges among the eight populations. Furthermore, divergence time estimates suggested that the Pudong White pigs split from four types of Taihu pigs at about 0.26-0.75 million years ago. Overall, the results suggest that the Pudong White pig is a unique population, and conservation practice should concentrate on preserving this isolated population.
关于中国太湖地区浦东白猪的起源和保护的必要性存在广泛的争论。为了阐明其遗传起源，我们对 25 头浦东白猪和 9 头来自太湖地区的沙乌头猪的完整 mtDNA D-环序列进行了测序，并重新分析了 GenBank 中 158 个其他品种的公布序列。所有猪的单倍型分为两个分支，A 和 E，但浦东白猪仅存在于分支 A 中。种群分化的结果表明，这 8 个种群之间的遗传交流很少。此外，分歧时间估计表明，浦东白猪大约在 26 万至 75 万年前从 4 种太湖猪中分离出来。总的来说，研究结果表明，浦东白猪是一个独特的群体，保护实践应该集中在保护这个孤立的群体上。
