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The Genomic Formation of South and Central Asia

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Republication from biorxiv

 

Abstract

The genetic formation of Central and South Asian populations has been unclear because of an absence of ancient DNA. To address this gap, we generated genome-wide data from 362 ancient individuals, including the first from eastern Iran, Turan (Uzbekistan, Turkmenistan, and Tajikistan), Bronze Age Kazakhstan, and South Asia. Our data reveal a complex set of genetic sources that ultimately combined to form the ancestry of South Asians today. We document a southward spread of genetic ancestry from the Eurasian Steppe, correlating with the archaeologically known expansion of pastoralist sites from the Steppe to Turan in the Middle Bronze Age (2300-1500 BCE). These Steppe communities mixed genetically with peoples of the Bactria Margiana Archaeological Complex (BMAC) whom they encountered in Turan (primarily descendants of earlier agriculturalists of Iran), but there is no evidence that the main BMAC population contributed genetically to later South Asians. Instead, Steppe communities integrated farther south throughout the 2nd millennium BCE, and we show that they mixed with a more southern population that we document at multiple sites as outlier individuals exhibiting a distinctive mixture of ancestry related to Iranian agriculturalists and South Asian hunter-gathers.

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India: Five distinct ancestral components and a complex structure revealed by genomic reconstruction of the history of extant populations

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Republication from pnas.org

(A) Scatterplot of 331 individuals from 18 mainland Indian populations by the first two PCs extracted from genome-wide genotype data. Four distinct clines and clusters were noted; these are encircled using four colors. (B) Estimates of ancestral components of 331 individuals from 18 mainland Indian populations. A model with four ancestral
 components (K = 4) was the most parsimonious to explain the variation and similarities of the genomewide genotype data on the 331 individuals. Each individual is represented by a vertical line partitioned into colored segments whose lengths are proportional to the contributions of the ancestral components to the genome of the individual. Population
labels were added only after each individual’s  ancestry had been estimated. We have used green and red to represent ANI and ASI ancestries; and cyan and blue with the inferred AAA and ATB ancestries. These colors correspond to the colors  used to encircle clusters of individuals in A. (Also see  SI Appendix, Figs. S2 and S3.)

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Significance

India, harboring more than one-sixth of the world population, has been underrepresented in genome-wide studies of variation. Our analysis reveals that there are four dominant ancestries in mainland populations of India, contrary to two ancestries inferred earlier. We also show that (i) there is a distinctive ancestry of the Andaman and Nicobar Islands populations that is likely ancestral also to Oceanic populations, and (ii) the extant mainland populations admixed widely irrespective of ancestry, which was rapidly replaced by endogamy, particularly among Indo-European–speaking upper castes, about 70 generations ago. This coincides with the historical period of formulation and adoption of some relevant sociocultural norms.

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THE HEPHTHALITES (WHITE HUNS) AND THE GENESIS OF THE AVARS

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By  Periklis    Deligiannis1

an  Avar  horseman,  armed  with  a  composite  bow  and  a  nomad  cavalry  spear  (copyright:  V. Vuksic).

The  first  European  mention  of  the  Hephthalites  or  White  Huns  comes  from  the  Byzantine  chronicler  Procopius,  a  contemporary  of  Emperor  Justinian.  Procopius  recorded  related  comments  of  a  Byzantine  envoy  to  the  Sassanids,  who  traveled  to  eastern  Iran.  The  Chinese  chronicles  mention  the  Hephthalites  as  “Ye-ti-i-li-do”  or  simpler  as  “Ye-ta”.   It  seems  that  the  Hephthalites  were  originally  a  Hunnic  tribe,  which  was  mixed  deeply  with  the  Iranians  and  Tocharians  of  central  Asia, concluding  as  a  mixed  hunnic-iranian-tocharian  people.  This  explains  the  possibility  of  adopting  around  500  AD  the  Iranian  language  and  several  Iranian  personal  names.

The  powerful  Hephthalites  managed  to  establish  two  nomadic  “empires”  in  central  Asia,  eastern  Iran  and  India.  In  390,  their  relatives,  the  Khionite  Huns  (known  to  the  Romans  as  “Kidarites”)  paved  the  way  for  their  expansion,  when  they  defeated  the  Sassanid  Persians  and  settled  in  Bactria  and  Sogdiana  (roughly  modern  Uzbekistan  and  northern  Afghanistan).  In  420-427  AD,  the  Hephthalites  unleashed  from  their  Central  Asian  cradle,  murderous  raids  in  Persia  reaching  the  city  of  Ragai  (modern  Tehran),  until  they  were  defeated  overwhelmingly  by  the  Sassanids  (427).  But  they  came  back  and  in  454  managed  to  defeat  the  Sassanids,  intensifying  again  their  raids  in  Iran.  In  464,  new  Hephthalite  raids  forced  the  Sassanian  King  Phiruz  to  deal  with  them  in  a  series  of  wars.  The  wars  ended  in  475  with  a  peace  treaty,  which  provided  for  an  annual  payment  of  ransom  by  the  Sassanids  to  the  Hephthalites.  Meanwhile,  in  468  the  Sassanids  attacked   the  Khionite/Kidarite  Huns  slaying  them  en  masse.  The  Hephthalites  took  advantage  of  the  destruction  of  the  threatening  Khionites  and  expelled  their  remnants  from  Bactria-Sogdiana,  which  they  annexed  (473-475).  Continue reading

Weaponry of the Indian subcontinent (India, Pakistan, Bangladesh, Sri-Lanka) (part I)

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01

This is a collection of weapons from the Indian subcontinent of the last centuries, that is the eras of the Mughal Empire, the Maratha Confederation and the British sovereignty. They belong to Hindu, Moslem and much less Buddhist (mostly Sri-Lankan) armies as well and are typical of Indian warfare during those centuries. The following images include a Maratha armour and elaborate helmet (front and side view), four other

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Contributions to Slingshot, Journal on ancient and medieval warfare

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slingshot_cover_309

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[Slingshot 308, September-October 2016]

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Some time now I’m contributing to Slingshot, the research Journal of the Society of Ancients (published since 1964), specialized in ancient and medieval warfare, tactics and wargaming.

Many thanks for this to Paul Innes and Nick Harbud.

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Periklis Deligiannis

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MAKE IT JUST AS THE ENEMY’S (part II): European-inspired helmets and Continental Asiatic-inspired armour of the Philippines, Indonesia and Insular Malaysia

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CONTINUED FROM PART I

08Burgonet style
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