Contemporary hybridization between female mule deer and male white-tailed deer in west Texas differs from the hypothesized sex mating patterns recovered from ancient hybridization events

IF 1 4区 生物学 Q3 ZOOLOGY Canadian Journal of Zoology Pub Date : 2023-09-27 DOI:10.1139/cjz-2023-0082
Emily Wright, Jacob Bayouth, Joseph Bayouth, Asha Worsham, Grant McDaniel, Tess Hollinger, Vivienne Lacy, Emma Johnston, David Pipkin, Emma Roberts, Robert D. Bradley
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Abstract

Introgressive hybridization between members of Odocoileus was examined using the mitochondrial cytochrome-b (maternal marker) and paternal sex-determining region Y ( Sry) genes. Eight out of 130 free-ranging individuals from the Panhandle and Trans-Pecos regions of Texas were determined to possess the mitochondrial haplotype of mule deer ( Odocoileus hemionus (Rafinesque, 1817)) and the paternal haplotype of white-tailed deer ( Odocoileus virginianus Rafinesque, 1832). Results indicated that hybridization between deer species in Texas (6.15%) was more broadly distributed than previously reported. Previous studies demonstrated that ancient hybridization events (1.32 mya) involved the capture of the white-tailed deer mitochondrial genome by mule deer, indicating a male mule deer × a female white-tailed deer directionality relevant to hybridization. Alternatively, contemporary hybridization events indicated a reversal in directionality and suggested a cross between a female mule deer × a male white-tailed deer. The Sry gene and species assignment based on morphological characters consistently were in agreement. Further, phylogenetic relationships between Odocoileus virginianus couesi and Odocoileus hemionus eremicus warrant additional investigation as recent hybridization (>200 years) may be a mechanism that allowed these two subspecies to evolve a unique evolutionary trajectory.
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得克萨斯西部雌骡鹿和雄白尾鹿的当代杂交不同于从古代杂交事件中恢复的假设的性交配模式
利用线粒体细胞色素-b(母体标记)和父系性别决定区Y (Sry)基因,研究了耳盘菌成员间的渐渗杂交。来自德克萨斯州Panhandle和Trans-Pecos地区的130只自由放养的个体中有8只被确定具有骡子鹿(Odocoileus hemionus (Rafinesque, 1817))的线粒体单倍型和白尾鹿(Odocoileus virginianus Rafinesque, 1832)的父本单倍型。结果表明:得克萨斯州鹿种间杂交分布较广(6.15%);先前的研究表明,古代杂交事件(1.32 mya)涉及白尾鹿被骡鹿捕获的线粒体基因组,表明雄骡鹿×雌白尾鹿的方向性与杂交有关。另外,当代杂交事件表明方向性发生了逆转,表明雌性骡鹿与雄性白尾鹿杂交。Sry基因与基于形态特征的种配一致。此外,由于最近的杂交(200年)可能是使这两个亚种进化出独特进化轨迹的一种机制,因此值得进一步研究弗吉尼亚长尾蛇和hemionus eremicus长尾蛇之间的系统发育关系。
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来源期刊
Canadian Journal of Zoology
Canadian Journal of Zoology 生物-动物学
CiteScore
2.40
自引率
0.00%
发文量
82
审稿时长
3 months
期刊介绍: Published since 1929, the Canadian Journal of Zoology is a monthly journal that reports on primary research contributed by respected international scientists in the broad field of zoology, including behaviour, biochemistry and physiology, developmental biology, ecology, genetics, morphology and ultrastructure, parasitology and pathology, and systematics and evolution. It also invites experts to submit review articles on topics of current interest.
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