中国北方豪猪亚化石的古DNA揭示了晚更新世旧大陆豪猪的进化史。

IF 3.4 Q1 Agricultural and Biological Sciences
Guilian Sheng, Jiaming Hu, Haowen Tong, Bastien Llamas, Junxia Yuan, Xindong Hou, Shungang Chen, Bo Xiao, Xulong Lai
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引用次数: 5

摘要

背景:东半球豪猪(豪猪科:豪猪科)是世界第三大啮齿类动物,栖息于欧洲南部、亚洲和非洲大部分地区。它们是温暖气候的典型标志,其分布仅限于热带和亚热带地区。在中国,豪猪广泛分布在长江以南地区。然而,在中国北方的一些遗址已经发现了化石遗迹,其中周口店遗址附近的天源洞代表了已知的最新豪猪化石记录。迄今为止,对豪猪的研究主要集中在豪猪的饲养和驯化方面,但对豪猪家族内的系统发育关系和进化历史知之甚少。结果:本研究对来自中国北部、南部和中部的7个晚更新世豪猪个体的部分线粒体12S rRNA和cyt b基因进行了测序。系统发育分析表明,天源洞豪猪与短尾豪猪亲缘关系较近,形态鉴定为下冠豪猪。结论:结合形态适应特征、相关区系和气候变化证据,分子生物学研究结果表明,豪猪在进化史上经历了一次晚第四纪灭绝。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Ancient DNA of northern China Hystricidae sub-fossils reveals the evolutionary history of old world porcupines in the Late Pleistocene.

Ancient DNA of northern China Hystricidae sub-fossils reveals the evolutionary history of old world porcupines in the Late Pleistocene.

Ancient DNA of northern China Hystricidae sub-fossils reveals the evolutionary history of old world porcupines in the Late Pleistocene.

Ancient DNA of northern China Hystricidae sub-fossils reveals the evolutionary history of old world porcupines in the Late Pleistocene.

Background: Old World porcupines (Family: Hystricidae) are the third-largest rodents and inhabit southern Europe, Asia, and most regions of Africa. They are a typical indicator of warm climate and their distribution is restricted to tropical and subtropical zones. In China, porcupines are widely distributed in southern areas of the Yangtze River. However, fossil remains have been identified in a few sites in northern China, among which Tianyuan Cave-near Zhoukoudian site-represents the latest known porcupine fossil record. So far, studies have focused mainly on porcupines' husbandry and domestication but little is known about their intrafamilial phylogenetic relationships and evolutionary history.

Results: In this study, we sequence partial mitochondrial 12S rRNA and cyt b genes for seven Late Pleistocene porcupine individuals from Northern, Southern and Central China. Phylogenetic analyses show that the Tianyuan Cave porcupines, which had been morphologically identified as Hystrix subcristata, have a closer relationship to Hystrix brachyura.

Conclusion: Together with morphological adaptation characteristics, associated fauna, and climate change evidence, the molecular results reveal that a Late Quaternary extirpation has occurred during the evolutionary history of porcupines.

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来源期刊
BMC Evolutionary Biology
BMC Evolutionary Biology 生物-进化生物学
CiteScore
5.80
自引率
0.00%
发文量
0
审稿时长
6 months
期刊介绍: BMC Evolutionary Biology is an open access, peer-reviewed journal that considers articles on all aspects of molecular and non-molecular evolution of all organisms, as well as phylogenetics and palaeontology.
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