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Genomic insights into the peopling of the Southwest Pacific

本帖最后由 imvivi001 于 2017-3-17 01:18 编辑

Genomic insights into the peopling of the Southwest Pacific

Pontus Skoglund, Cosimo Posth, Kendra Sirak,
Matthew Spriggs, Frederique Valentin, Stuart Bedford, Geoffrey R. Clark, Christian Reepmeyer, Fiona Petchey,Daniel Fernandes,
Qiaomei Fu, Eadaoin Harney, Mark Lipson, Swapan Mallick, Mario Novak, Nadin Rohland, Kristin Stewardson, Syafiq Abdullah,
Murray P. Cox, Françoise R. Friedlaender, Jonathan S. Friedlaender, Toomas Kivisild, George Koki, Pradiptajati Kusuma, D. Andrew Merriwether
et al.
AffiliationsContributionsCorresponding authors
Nature 538, 510–513 (27 October 2016) doi:10.1038/nature19844
Received 20 April 2016 Accepted 13 September 2016 Published online 03 October 2016

The appearance of people associated with the Lapita culture in the South Pacific around 3,000 years ago1 marked the beginning of the last major human dispersal to unpopulated lands. However, the relationship of these pioneers to the long-established Papuan people of the New Guinea region is unclear. Here we present genome-wide ancient DNA data from three individuals from Vanuatu (about 3,100–2,700 years before present) and one from Tonga (about 2,700–2,300 years before present), and analyse them with data from 778 present-day East Asians and Oceanians. Today, indigenous people of the South Pacific harbour a mixture of ancestry from Papuans and a population of East Asian origin that no longer exists in unmixed form, but is a match to the ancient individuals. Most analyses have interpreted the minimum of twenty-five per cent Papuan ancestry in the region today as evidence that the first humans to reach Remote Oceania, including Polynesia, were derived from population mixtures near New Guinea, before their further expansion into Remote Oceania2, 3, 4, 5. However, our finding that the ancient individuals had little to no Papuan ancestry implies that later human population movements spread Papuan ancestry through the South Pacific after the first peopling of the islands.
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
大洋洲-古今人群-PCA1-nature2014.jpg
2017-3-17 00:38

大洋洲-古今人群-成分-nature2014.jpg
2017-3-17 00:38
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
大洋洲-人群-混合tree-nature2016.jpg
2017-3-17 00:45
     
大洋洲-早期-迁移-路径-nature2016.jpg
2017-3-17 00:45
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
记忆中本坛之前没有转载,起码这几幅图印象中没看到。 觉得蛮有意思的,对了解现代大洋洲人群血统来源、以及上古早期的‘y-O大航海人群’很有帮助。(目前没看到原文,不能肯定是O1或O3)
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
全文http://cloud.189.cn/t/jemqmef63QRj(访问码:3223)
5# 198401 谢谢,这篇文章的结论与以往的文章没有太大的区别。
5# 198401
谢谢分享,不过我的浏览器不知什么原因无法下载,如方便,可私信发给我,谢谢~
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
看附件表格内容,似乎全是女性,但是很奇怪,好像也没有mt数据,只有X测序,不知道为什么...?
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
刚才发现付大美已经转发到researchgate上了(好像是征得了其他主创的同意,尽管她本人也是主创或主要审稿人之一)。
有趣的是,这篇letter文章与nature正式发表的不同,付的老友reich赫然是通讯作者,而nature正式发表时,reich博士的名字竟然不见了,这是为什么...?
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
7# imvivi001 重新试下,应该可以下载
Previous studies of mitochondrial DNA and Y chromosomes sug-gested that present-day people of the South Pacific harbour more East Asian ancestry from female than from male ancestors3. Our genome-wide analyses confirm a significant excess of First Remote Oceanian ancestry on the X chromosome compared to the autosomes (Z scores up to 10) (Fig. 2b). Females carry two-thirds of the X chromosomes in a population but only half of the autosomes (Extended Data Fig. 6), and we compared the ancestry estimates in these two parts of the genome to obtain the most accurate estimates of sex-biased admixture in diverse Oceanians to date (Extended Data Fig. 6 and Extended Data Table 4). It has been suggested that matrilocal social structure in the primarily First Remote Oceanian ancestry populations of the region is one likely factor to explain these patterns29,30. However, it is also possible that some of these patterns reflect a scenario in which the later movement of Papuan ancestry into Remote Oceania was largely mediated by males who then mixed with resident females.--------------------------------------------------------

上次goldberg团队关于欧洲青铜时代来自欧亚草原的男性大换血论文,因为使用qpAdm方法不当,造成严重偏差(可能让小云老师白高兴了一阵子,呵呵)
这次skoglund团队,估计有付等一众超级牛人们坐镇,同时使用qpAdm, qpWave and qpGraph几种武器,基本保证了分析质量,应该值得信赖。

不过对于为何现代大洋洲的X更多的来自东亚东南亚世系,这个真不好解释。我觉得最大的可能,就是当年这些来自东亚东南地区的海上殖民者,在征服当地之后,他们的女性在社区具有天生的优越地位(可能类似中国或早期周人‘子凭母贵’的社会模式),于是他们的后代获得更多的资源配置...。同样的情况,也可以在目前日本人的血统中看到。
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
巴布亚女人
巴布亚-女人-1.jpg
2017-3-17 13:56
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
11# imvivi001 原始社会向外整体迁徙的时候,外来男子打炮相对容易,外来女性想要加入却很困难。
看附件表格内容,似乎全是女性,但是很奇怪,好像也没有mt数据,只有X测序,不知道为什么...?
imvivi001 发表于 2017-3-17 11:42
原文有mt数据,是B4a1a1a,据说是波人标志性类型,而B4a1a是菲律宾最常见的mt类型之一~
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
12# imvivi001

露点了!

为什么黄种人、白种人露点就要打马赛克,黑种人却不用?妥妥滴种族歧视!
比较有意思的是,在这几个Lapita古代女性的寿台骨中均提取到不少的Y SNP,这是为什么? 难道现代智人的女性颅骨的y snp比较多吗?
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
奇怪,马来人对波利尼西亚人的基因贡献有那么高吗?看不出来。
O3a3c* (M134+, M117-)
17# hercules

母系影响很高,父系从x上看估计至少有一半~
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
15# 鹧鸪天

  人家民族的风俗文化就是如此,咱们这叫是尊重人家的风俗习惯好不好…
物格而后知至,知至而后意诚,意诚而后心正,心正而后身修,身修而后家齐,家齐而后国治,国治而后天下平...
17# hercules应该bushi马来人吧?波利尼西亚人应该来自台湾feilvbin一线。
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