Multiple maternal origins of chickens: Out of the Asian jungles
Multiple maternal origins of chickens: Out of the Asian jungles
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DOI：
10.1016/j.ympev.2005.09.014
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发表时间：
2006-01-01
影响因子：
4.1
通讯作者：
Zhang, YP
中科院分区：
文献类型：
--
作者：
Liu, YP;Wu, GS;Zhang, YP
长期以来，家鸡对人类社会的食物、宗教、娱乐和装饰用途都很重要，但鸡在欧亚大陆的起源和系统地理学仍然不确定。本文通过分析欧亚大陆834只家鸡（Gallus Gallus domesticus）以及来自东南亚和中国的66只野生红色丛林鸡（Gallus Gallus）的线粒体DNA高变段I (HVS-I)，评估了它们的起源和系统地理历史。系统发育分析显示9个mtDNA分支（A-I）高度分化，其中7个分支同时包含红丛林鸡和家鸡。在鸡中没有特定品种的进化枝。A、B、E支系普遍分布于欧亚大陆，而其他支系则局限于南亚和东南亚。C支系主要分布在日本和中国东南部，而F支系和G支系仅分布于中国云南。D支系的地理分布与斗鸡活动的分布密切相关。统计测试检测到每个分支内的种群扩张。这些不同的分布模式和扩张特征表明，不同的进化支可能分别起源于不同的地区，如云南、中国南部和西南及其周边地区（如越南、缅甸和泰国）以及印度次大陆，这支持了南亚和东南亚的多起源理论。(c) 2005爱思唯尔公司版权所有。
Domestic chickens have long been important to human societies for food, religion, entertainment, and decorative uses, yet the origins and phylogeography of chickens through Eurasia remain uncertain. Here, we assessed their origins and phylogeographic history by analyzing the mitochondrial DNA hypervariable segment I (HVS-I) for 834 domestic chickens (Gallus gallus domesticus) across Eurasia as well as 66 wild red jungle fowls (Gallus gallus) from Southeast Asia and China. Phylogenetic analyses revealed nine highly divergent mtDNA clades (A-I) in which seven clades contained both the red jungle fowls and domestic chickens. There was no breed-specific clade in the chickens. The clades A, B, and E are distributed ubiquitously in Eurasia, while the other clades were restricted to South and Southeast Asia. Clade C was mainly distributed in Japan and Southeast China, while clades F and G were exclusive to Yunnan, China. The geographic distribution of clade D was closely related to the distribution of the pastime of cock fighting. Statistical tests detect population expansion within each subclade. These distinct distribution patterns and expansion signatures suggest that different clades may originate from different regions, such as Yunnan, South and Southwest China and/or surrounding areas (i.e., Vietnam, Burma, and Thailand), and the Indian subcontinent, respectively, which support the theory of multiple origins in South and Southeast Asia. (c) 2005 Elsevier Inc. All rights reserved.