Matsudaira Kazunari, Reichard Ulrich H, Malaivijitnond Suchinda, Ishida Takafumi
Unit of Human Biology and Genetics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan.
Primates. 2013 Jan;54(1):33-7. doi: 10.1007/s10329-012-0323-5. Epub 2012 Aug 15.
Inter-specific hybrid zones for Hylobates gibbons are known in Southeast Asia. Among these, one hybrid zone between Hylobates lar and H. pileatus is located in Khao Yai National Park, Thailand. To find molecular evidence for the natural hybridization of the gibbons in this region, we studied mitochondrial DNA (mtDNA) of 68 gibbons of the H. lar phenotype living adjacent to the hybrid zone. Nucleotide sequencing of a fragment of mtDNA spanning hyper variable segment I showed that nine gibbons had an mtDNA haplotype of H. pileatus, and that seven of these nine gibbons belonged to a single maternal lineage over three generations. It is thus confirmed that introgression between H. lar and H. pileatus exists and the initial hybridization took place ages ago.
合趾猿的种间杂交区域在东南亚是已知的。其中，白掌长臂猿（Hylobates lar）和戴帽长臂猿（H. pileatus）之间的一个杂交区域位于泰国的考艾国家公园。为了找到该地区长臂猿自然杂交的分子证据，我们研究了生活在杂交区域附近的68只具有白掌长臂猿表型的长臂猿的线粒体DNA（mtDNA）。对跨越高变区I的一段mtDNA片段进行核苷酸测序表明，9只长臂猿具有戴帽长臂猿的mtDNA单倍型，并且这9只长臂猿中的7只属于三代以上的单一母系谱系。因此证实了白掌长臂猿和戴帽长臂猿之间存在基因渗入，并且最初的杂交发生在很久以前。
