Carr S M, Ballinger S W, Derr J N, Blankenship L H, Bickham J W
Proc Natl Acad Sci U S A. 1986 Dec;83(24):9576-80. doi: 10.1073/pnas.83.24.9576.
Sympatric populations of white-tailed deer and mule deer (Odocoileus virginianus and Odocoileus hemionus, respectively) on a west Texas ranch share a common mitochondrial DNA restriction map genotype. Phylogenetic analysis indicates that this genotype is more characteristic of O. virginianus than of O. hemionus. The genotype of west Texas deer differs from that of O. virginianus from South Carolina by five mutational events (1.3% sequence divergence), whereas it differs from that of O. hemionus from California by 17 events (5.5% divergence). We suggest that interspecies hybridization has occurred, primarily between mule deer bucks and white-tailed deer does, with preferential absorption of hybrid offspring into the mule deer gene pool. Introgressive hybridization may be involved in ongoing displacement of mule deer by white-tailed deer in west Texas.
在得克萨斯州西部一个牧场中，白尾鹿和骡鹿（分别为弗吉尼亚鹿和黑尾鹿）的同域种群共享一种常见的线粒体DNA限制性图谱基因型。系统发育分析表明，这种基因型更具弗吉尼亚鹿而非黑尾鹿的特征。得克萨斯州西部鹿的基因型与南卡罗来纳州的弗吉尼亚鹿相比，有五个突变事件（序列差异1.3%），而与加利福尼亚州的黑尾鹿相比，有17个事件（差异5.5%）。我们认为已经发生了种间杂交，主要是骡鹿雄鹿与白尾鹿雌鹿之间的杂交，杂交后代优先融入骡鹿基因库。渐渗杂交可能参与了得克萨斯州西部骡鹿被白尾鹿持续取代的过程。
