Baltic BA ancestry in the Wielbark culture


Coordinates - Eurogenes Global 25
Anatolia_BA - Bronze Age populations without outliers
CWC-Yamnaya - German CWC and Yamnaya Samara
HG - Serbian Iron Gates, Motala HG, NOR_North_LN_HG, NOR_Meso, NOR_N_HG
N - Polish GAC, German LBK
N-HG - Blatterhohle, Wartberg

Comments

Arza said…
Claims that samples from Kowalewko represent unmixed and purely Germanic population are clearly contradicted by the genomic data.

The only question is whether the Uralic admixture is true or it's there due to the low quality of these sequences.
ambron said…
Poles have much more Baltic BA:

Target: Polish
Distance: 0.7167% / 0.00716747
47.0 Baltic_EST_BA
30.2 Corded_Ware_DEU
22.8 HUN_Baden_LCA

However, this value is significantly overpriced through Northeast Poland. On the other hand, Wielkopolanie, i.e. historical heirs of the Kowalewko population, have more or less the same amount of Baltic BA as East Germans.
Arza said…
That's cool, but what about the Baltic BA in Wielbark and other IA populations?

Or in modern Swedes to whom ancient samples from Central Europe are always compared (and such comparison usually ends with a conclusion that these samples are "strongly Germanic")?
ambron said…
Margaryan concluded that there was a massive population flow from the Southeast Baltic to Scandinavia during the Iron Age.
ambron said…
So it is worth seeing where the Baltic BA component appears at earliest:

Target: POL_EBA:I6579
Distance: 1.5155% / 0.01515521
50.4 Corded_Ware_DEU
24.4 Baltic_EST_BA
14.4 SRB_Iron_Gates_HG
10.2 HUN_Baden_LCA
0.6 Baltic_LVA_MN
Arza said…
There are even older samples. I'll blog about them all.
ambron said…
Are you talking about S11953 and I6531, or about more?
ambron said…
Baltic BA in Kowalewko was rather of local origin, judging by earlier samples from a close neighborhood:

Corded_Ware_POL:N47
Corded_Ware_CZE 47.3%
POL_Globular_Amphora 20.3%
___ Baltic_EST_BA 19.6%___
POL_BKG_N_o1 12.8%
POL_BKG_N 0%
POL_BKG_N_o2 0%
Corded_Ware_Baltic_early 0%
dist 2.5287

Corded_Ware_POL:N49
Corded_Ware_CZE 51.6%
___ Baltic_EST_BA 21.5%___
POL_BKG_N_o1 9%
Corded_Ware_Baltic_early 5.7%
POL_BKG_N_o2 4.7%
POL_BKG_N 4.3%
POL_Globular_Amphora 3.2%
dist 1.9501
Arza said…
More of course.

Re: Kowalewko
I also think that it was local, but we will see how it'll pan out.
ambron said…
If more, that's great!
ambron said…
In this context, it is worth paying attention to the participation of pre-medieval East European admixture from Athanasiadis paper:

Poles - 76.19%
Danes - 13.23-21.27%
the Dutch - 20.06%
Swedes - 17.39%
Germans - 17.22%
Norwegians - 13.24
Arza said…
The problem is that we never know what such "components" represent. Looking at these numbers I have no idea where would it plot on a PCA. Probably it's just steppe and EEF combined with a small percent of Baltic_BA.

ambron said…
Archaeological DNA is implemented into programs calibrated on contemporary genomes, where the number of division into characteristic components correlates with geography and informs about the approximate age of the component. This is where we know that Baltic BA correlates best with the old East European admixture, not the other way around.
Suevi said…
We find evidence for the link between people (Goths) and material culture (Wielbark culture) evidenced by the close genetic relationships between Kow-OVIA and Mas-VBIA populations. South Scandinavia is a candidate region for the
genetic ancestors of Goths represented in the populations from Kow-OVIA and Mas-VBIA, as evidenced by close genetic links of both population with the JIA.

https://drive.google.com/file/d/1ArNWSItiEYw0JvcK4ZdZqYrwnSmtNlUQ/view?usp=sharing
Arza said…
@ Suevi

They've used only four IA populations:
Jutland IA,
Iberian IA,
Scythian,
Scytho-Syberian.

One doesn't need six millions in cash to know, that Jutland will be the most similar one.

Only detailed autosomal analysis can tell where they're from. And as you can see looking at the Baltic BA levels among them it won't be simple "they were Goths form South Scandinavia".