返回列表 回复 发帖

Nature:西亚农业在中东被发明两次

不知道这篇文章以前有没有在本坛转载过,如有,请管理员删除。
我在看【Farming invented twice in Middle East, genomes study reveals : Nature News & Comment】,分享给你,快来看! http://www.nature.com/news/farmi ... udy-reveals-1.20119
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...
Geographical divide
The team found stark differences between the genomes of Neolithic individuals from the southern Levant region, including Israel and Jordan, and those living across the Zagros Mountains in western Iran. The Zagros early farmers were instead more closely related to nearby hunter-gatherers who lived in the region before the Neolithic.
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...
本帖最后由 lindberg 于 2017-10-4 21:50 编辑

这篇文章肯定看过,不过本坛是否发过就不清楚了。

其实考古研究新石器开始后就是有两支迁徙到欧洲的农业人群,一支来自小亚西部经小亚西北部的海峡到巴尔干;另一支似乎是半渔半农,来自莱万特,在小亚西南部经大片岛屿到达希腊,第二支时间应该稍晚。

在2017年La博士那篇文章中也说过这两支人群的区别。
3# lindberg
    请问你这里说的La博士2017年的那篇文章是哪一篇吖?
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...
这篇文章肯定看过,不过本坛是否发过就不清楚了。

其实考古研究新石器开始后就是有两支迁徙到欧洲的农业人群,一支来自小亚西部经小亚西北部的海峡到巴尔干;另一支似乎是半渔半农,来自莱万特,在小亚西南部经大 ...
lindberg 发表于 2017-10-4 21:48
印象中,来自小亚细亚的农夫以当地土著与CHG的混合为主,黎凡特农夫则明显多一些basal E.的成分,而伊朗农夫则更多BE成分~
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...
4# imvivi001
记错了,应该是那篇东南欧的,Mathison的。
6# lindberg
今年lipson-纳吉-莱希豪华团队的科研成果:
Parallel palaeogenomic transects reveal complex genetic history of early European farmers

关于欧洲最早的农夫FEF,文章中如是描述:
25 Neolithic individuals (around 6500–6000 bc) from northwestern Anatolia
to represent the ancestors of the first European farmers (FEF)

...
We then added each Neolithic population to this model in turn, fitting them as a mixture of FEF and either one or two hunter-gatherer ancestry components. To check for robustness, we repeated our analyses using transversions or outgroup-ascertained SNPs only, with in-solution capture data for LOS, and with additional or alternative hunter-gatherers in the model (Extended Data Table 3 and Supplementary Information section 6), and in all cases the results were qualitatively consistent. We find that almost all ancient groups from Hungary have ancestry significantly closest to one of the more eastern WHG individuals (KO1 or VIL);

...
Germany have the greatest affinity to LOS; and all three Iberian groups
have LB1-related ancestry (Fig. 2c and Extended Data Table 3). This
pattern implies that admixture into European farmers occurred
multiple times from local hunter-gatherer populations.
Moreover, combining the proportions and sources of hunter-gatherer ancestry, populations from the three regions are distinguishable at all stages of the Neolithic period.
Therefore, any further long-range migrations that may have occurred after the initial spread of agriculture in the studied regions (and before large incursions from the steppe) were not substantial enough to homogenize the ancestry of farming populations.


For our most complete time series, from Hungary, we infer admixture dates throughout the Neolithic period that are on average mostly 18–30 generations old (500–840 years), indicating ongoing population transformation and admixture (Fig. 2c and Extended Data Table 4).
This pattern is accompanied by a gradual increase in hunter-gatherer ancestry over time, although never reaching the levels that we observe in Middle Neolithic Germany or Iberia (Fig. 2a).
Although most of the Early Neolithic samples from Hungary do not have significantly more hunter-gatherer ancestry than Neolithic Anatolians (Fig. 2a and Extended Data Tables 1, 2), one Starčevo individual, BAM17b,

is inferred to have 7.8 ± 1.7% (mean ± s.e.m.) hunter-gatherer
ancestry and a very recent ALDER date of 4.5± 1.9 (mean± s.e.m.)
generations (5865±65 bc (mean ±s.e.m.); 1.9± 0.9 generations using
a group-level estimate; Extended Data Table 4), consistent with having one or two hunter-gatherer ancestors in the past few generations.

Additionally, one newly sampled Körös individual, TIDO2a, is similar to KO1 in having around 80% WHG and 20% FEF ancestry and an ALDER date of 16.1± 3.8 generations, reinforcing the distinctive heterogeneity of the Tiszaszőlős site, the origin of both TIDO2a and KO1.

We also infer an average admixture date of 5675±55 bc for the
ALPc Middle Neolithic, again suggesting that in Hungary, interaction
between Anatolian migrants and local hunter-gatherers began in the
Early Neolithic (compare with refs 14, 23–25). The largest differences
between Alföld and Transdanubia are observed in the Middle Neolithic, with substantially more hunter-gatherer ancestry in ALPc than LBKT (Fig. 2 and Extended Data Table 3) and, overall, we observe slight trends towards more hunter-gatherer ancestry to the north and east (Extended Data Fig. 4), as expected based on the greater archaeological evidence of hunter-gatherer settlement and interactions23.
By the Late Neolithic and Chalcolithic periods, however, and especially in the Baden period (when the region became culturally unified26), our results are broadly similar across both halves of present-day Hungary.

----------------------------------------

      总的来说,小亚西部农夫与欧洲当地猎采者HG土著的融合是一个很长期的过程,不过各地情况不尽相同,在伊比利亚半岛与德国这些距离小亚较远的地区,当地土著与西亚农夫融合比较深,而环黑海地区,融合情况明显较差(可能对当地猎采者HG人群采取了驱逐政策)。
     目前缺乏安纳托利亚中部与东部的数据,还无法看到西亚农夫新石器时期对欧洲影响的全貌,需要继续等待...
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...
新石器早期(约8千年前)西亚西部农夫的Y与mt数据一瞥:
编号年代地点 纬度 经度 覆盖率性别 mtDNA Y单倍群
I07076500-6200 BCEBarcın 40.30 29.57 9.431FK1a4-
I07086500-6200 BCEBarcın 40.30 29.57 6.948MN1b1aJ2a
I07096500-6200 BCEBarcın 40.30 29.57 9.765MU3H2
I07236400-5600 BCEMenteşe 40.26 29.65 0.472MX2m2G2a2a
I07246400-5600 BCEMenteşe 40.26 29.65 0.048MK1a4I
I07266400-5600 BCEMenteşe 40.26 29.65 0.221FH or H5-C16192T-
I07276400-5600 BCEMenteşe 40.26 29.65 0.039MK1a2G
I07366500-6200 BCEBarcın 40.30 29.57 2.248FN1a1a1a-
I07446500-6200 BCEBarcın 40.30 29.57 2.39MJ1c11G2a2b2a
I07456500-6200 BCEBarcın 40.30 29.57 7.785MU8b1b1H2
I07466500-6200 BCEBarcın 40.30 29.57 8.465MK1a or K1a1G2a2b2a1c
I10966500-6200 BCEBarcın 40.30 29.57 2.865MN1a1a1I2c
I10976500-6200 BCEBarcın 40.30 29.57 2.125MW1-T119CG2a2b2a
I10986500-6200 BCEBarcın 40.30 29.57 2.994FX2d2-
I10996500-6200 BCEBarcın 40.30 29.57 0.827MT2bG2a2a1b
I11006500-6200 BCEBarcın 40.30 29.57 0.331FK1a or K1a6-
I11016500-6200 BCEBarcın 40.30 29.57 1.56MT2bH
I11026500-6200 BCEBarcın 40.30 29.57 0.55MK1a3aC1a2
I11036500-6200 BCEBarcın 40.30 29.57 1.135MK1b1b1G2a2a1b1
I15796500-6200 BCEBarcın 40.30 29.57 2.507FK1a-C150T-
I15806500-6200 BCEBarcın 40.30 29.57 2.903FH5-
I15816500-6200 BCEBarcın 40.30 29.57 2.803FU3-
I15836500-6200 BCEBarcın 40.30 29.57 9.396MK1a2G2a2a1b
I15856500-6200 BCEBarcın 40.30 29.57 3.098FJ1 or J1c-
I08546500-6200 BCEBarcın 40.30 29.57 1.571FN1a1a1a-
I07256400-5600 BCEMenteşe 40.26 29.65 0.038FN1a1a1-
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...
返回列表
baidu
互联网 www.ranhaer.org