Syunik Particularity
Davidski has produced new G25 coordinates based on the Skourtanioti et al. (2025) paper, including the 25 new samples from Syunik. He removed noisy SNPs that were almost certainly the result of postmortem damage. After this correction, the PCA of the “Hellenistic” era Syunik samples appears more compact and less heterogeneous, while modern Syunik individuals plot within the Aghitu Hellenistic cluster.
The conclusions remain the same as in the previous post regarding the Aghitu cave samples.
Some samples that show a shift toward the Iranian Plateau are probably from the Achaemenid/Orontid period (600–300 BC) rather than the Hellenistic period (300 BC–1 AD). The shift toward the Iranian Plateau is even stronger in a Late Antique sample from Caucasian Albania, specifically from the Shamakhi region. Therefore, it may be argued that Iranian influence was probably stronger in the eastern parts of the South Caucasus than in other regions of historic Armenia and the Caucasus. However, this influence appears to have been transient in Armenia, given that modern Syunik Armenians do not show a strong shift toward the Iranian Plateau.
The reason why Syunik does not display an abrupt genetic change in the post-Urartian period — similar to what is observed in the Araratian Plain, Sevan, and Shirak regions — is probably that Urartu did not exercise strong control over Syunik and did not establish new cities there with relocated populations. As a result, the Etiuni genetic profile persisted longer, and the transition to the modern genetic profile was gradual.
A similar pattern of gradual change may have occurred in other parts of historic Armenia that did not experience strong control by the Urartian Empire. Examples include Artsakh, Utik, and parts of Gugark.
These data support the theory proposed in Petrosyan and Palyan (2023) regarding the post-Urartian genetic shift. We suggested that this shift was a consequence of Urartu’s population relocation policies.
Additionally, it is possible that after the fall of the Biainean dynasty in Van, the Biainean elite relocated to the Araratian Plain — a theory suggested by some scholars. However, this hypothesis requires additional data in order to be confirmed or falsified.