Showing posts with label tamil. Show all posts
Showing posts with label tamil. Show all posts

Sunday, December 19, 2021

Tamil Migration

 

Neighbour-joining tree of 21 Tamil Nadu ethnic groups. Nomenclature of the NJ tree, A and B, ancestral and derived node; C and D, branch; C1, C2 and D1, subbranch; C1a, C1b, C2a and D1a, clade; C1a1, C1b1, C1b2, C2a1 and D1a1, subclade; C1a1.1, C1b1.1, C1b2.1 and D1b1.1, cluster; C1a1.11, subcluster.

Neighbour-joining tree of 21 Tamil Nadu ethnic groups. Nomenclature of the NJ tree, A and B, ancestral and derived node; C and D, branch; C1, C2 and D1, subbranch; C1a, C1b, C2a and D1a, clade; C1a1, C1b1, C1b2, C2a1 and D1a1, subclade; C1a1.1, C1b1.1, C1b2.1 and D1b1.1, cluster; C1a1.11, subcluster.


There are many Vellala branches from http://tamilelibrary.org/articoli-352.html

Mudaliars, Pillais and Gounders have a common ancestry which many people are not aware of. All the three so called caste names were originally titles held by chieftains. These three groups actually belong to the Vellalar community, who were agricultural landlords and inhabitants of the "marutha nilam" (one of the five lands advocated by the Sangam literature). It is said that pure Tamilians should be able to trace their origin to any one of the five lands. The "marutham" (cropland) was inhabited mainly by two groups, the Vellalas (agricultural landlords) and the Pallars (agricultural peasants). This land was very fertile with lots of fields. In an ancient Tamil poem, “mukkudal pallu” (முக்கூடற் பள்ளு), murthapalli (elder Pallar women), illayapalli (younger Pallar women) and "pallan" (their Pallar husbands) make fun of the Vellalar landlord.



Later, during cultural diversification, the Vellalars started diverging into small groups, depending upon the regions of Tamil Nadu that they inhabited. Thus, those of the Thondaimandalam became the Thondaimandala vellals (Mudaliars and few Pillais). This area includes the present day areas of Chennai, Chengalpet, Kanchipuram, Vellore, Cadalore, Arcot, Vadalore, and Thrivannamalai. In these areas, the Vella Mudaliars (also called Arcot Mudaliars) are the dominant community.



Those who inhabited the areas of Chola (Thichy, Thanjavur, and Pudukottai) and Pandiya mandalams (Madurai, Thirunelvelli, Thuthukudi, Kanyakumari, and Nagerkovil) became the Shoziya Vellar (or "Chola Velar") and Pandiya Vellar respectively. Both these communities have Pillai as their surnames.



The Vellalas of the Kongu mandalam were called as Kongu Vellalas (Gounders or Kounders). This area includes Coimbatore, Salem, Pollaichi, Udagamandalam and Darmapuri, where the Kongu Vella Gounders are the dominant community. Its also said that the Pillai, Menon and Nair communities of Kerala also belong to the Vellalar community (the so called Chera Cellals).



Even though 90% of the Tamilian Vellalas have Pillai, Mudaliar or Gounder surnames, it should be remembered that not all Mudaliars, Pillais and Gounders are Vellalas. The vice versa is also true — thus sometimes some Vellalas have other surnames like Chettiar, Nayakar, and so on. Similarly the Adamudaiya Mudaliars and Senguntha Mudaliars (who form a significant number among the thondaimandala mudaliars) are, strictly speaking, non-vellals. The Adamudayars actually belong to the Mukkulathor community, which also includes the Kallars and Maravars. These three communities (as the name "Mukkulathor" — meaning three communities — have Devar has their surname. But latter the Agamudaiyars (the most upward community among the three) slowly migrated towards the northern part of Tamil Nadu, settled there, changed their surname to Mudaliar and mingled with the local Vellala Mudaliars. Similarly, the Senkunthars, who belong to the weaver community and form a significant population in Kancheepuram and Tirupur-Salem, started using Mudaliar surname for social upliftment, and started marrying with the Vella Mudaliars.



Today the caste “Thuluva Vella” includes the Vella Mudaliars, Agamudaiya Mudaliars and Senkuntha Mudaliars. Even today inter-marriage between the Vella Mudaliars and non-Vellala Mudaliars is not accepted in very orthodox families. A small but significant population of Mudaliars also exist in areas other than the Thondaimandalam, such as Madurai, Tirunelvelli, Coimbatore, etc. However, most of them are actually migrants from Thodaimandalam area.



Among the Coimbathore Gounders (even though the word generally refers to the Kongu Vallala Gounders), other non-Vella Gounder also exist including the “Vettuva Gounders” or “Vanniya Gounders”. Even though both the Vellala Gounders and Vanniya Gounders share the same surnames, they belong to a totally different communities, and marriage between these two communities is forbidden by both of them. In general, among all the vellalas, the Kongu Vellalas are unique and follow totally different customs and traditions. Endogamy is very strong among their community, and they strongly believe in the purity of their genes. They have a unique social organization called “kootam” which the equivalent of the bhraminical “gothram”. Thus persons belonging to the same “kootam” are considered as brothers and sisters, and marriage between them is forbidden. Some of the Vella Gounders were also rulers and thus are considered as Kshatriyas. Their marriages are held by senior members of their family and not by Brahmins. Their temples also have Vella Gounder priests, unlike other temples which have Brahmin priests. Thus most occupations in their society is managed by members of their own community, except for jobs with low social status.



Of the three Vellala communities, the Pillais are the most exogamous. Thus in many parts of Tamil Nadu, there are many people belonging to diverse communities wh ocall themselves as Pillais — again for obvious social upliftment. Thus, the sub-caste system among Pillais is very diverse. Even among the Vella Pillais, eight major groups can be identified: 1. the Karuneega Pillai (Kanaku Pillai mainly in Thondai mandalam area), 2. Karkattha Pillai (Thanjavur kumbakonam area — many people belonging to this community are wrongly mistaken as Brahmins due to the strong association between these two communities in the Cauvery belt area), 3. Thuluva Vella Pillai, 4. Shoziya Vella Pillai, 5. Pandiya Vella Pillai, 7. Thirunelvelli Siva Pillai, 7. Nanjil Pillai (Sengottai Pillaimar) and 8. kKerala Pillai (Chera Vellalar).



Since there are so many sub-castes, hierarchy among them is inevitable. Even though the Thirunelvelli Siva Pillais are Vella Pillais who belong to the Pandiya mandalam, they tend to differentiate themselves from the non-vegetarian Pandiya Pillais and claim supremacy. Similarly, even though the Shoziya Vellals and Karkathars both inhabit Chola mandalam and share their Pillai surnames, the vegetarian Karkathars claim supremacy over the non–vegetarian Shoziya Vellas.



Interestingly, the Thodaimandala Saiva Mudailars, Thanjavur (kumbakonam) Karkathars and Tirunelvelli Siva Pillai — though belonging to three different mandalam — tend to flock together due to common food habits (strict vegetarians) and traditions (most of them are Shaivites), and inter-marriage among them is sometimes acceptable. Each group claims supremacy over the others in terms of genetic purity, which is analogous to the fight between the “Vadakalai” and “Thenkalai” Iyengars.



Even though strictly speaking, these communities are minorities, they claim supremacy over other Pillais, Mudaliars and Gounders. Among the Pillais, the most isolated group is the Nanjil Pillais. They inhabit the Kumari mavattam (Nagerkovil and Kanyakumari). The other Tamil Pillais don’t marry with them, since these people are strongly influenced by the Kerala culture. The Nagerkovil Kanyakumari area is located on the tip of Kerala and Tamil Nadu; it was once part of Kerala and is now in Tamil Nadu). The strong Kerala influence is seen in there food habits, language (slang) and other customs which sort of differentiate them from the other Tamil Pillai communities. But since this community is of Tamilian origin, marriage with the Kerala Nairs, Menons and Pillais is prohibited. Thus the Vellala community of Tamil Nadu (and perhaps Kerala) even though has a long heritage which can be traced back to Sangam literature is largely diverse and much unknown to the modern world.


The Tuluva and Kongu vellalar are probably the new groups that came in during the Kalabhra invasion. During this Kalabhra invasion some of the newer groups won over the Sangam kings and settled down. Then there was resurgence of existing Vellalas to make the lands of these new comers into public which led to further fights. These events are documented in Sangam literature.  The Neighbourhood joining tree shows that the Kongu and Tuluva vellalars have affinity towards Telugu groups. The Veerkodi vellala seem to cluster with Maravar and the Agamudiya Vellala with Vanniars and Yadavars. Some older Vellala groups have high J2a and some L1 haplogroups. 



As seen in the diagram below, main migrations would be


  •        Ancient C migration 70-60k ybp most of who perished in Toba eruption. very few Kallars seem to carry it
  •        H1 hunter gatherer groups in Karnataka and Kerala who are Kurumba 
  •        J2a Neolithic farmers present in Toda and Vellala
  •        R2a migration during late IA from Utkal/Vanga present among Maravar, Kallar, Sinhalese etc..
  •        Gujjar H1, G etc.. found among Nadars
  •        H1, R1a found among Yadavar
  •        H1, R1a found among Iyers
  •        L1 found among Vellala and some other groups
  •        F, H, O present among Kongu Vellalas migration with Kalabhras
  •       J2b found among some Vellalas from Andhra and some Yadavar. J2b groups are found among Andhra & Kannad castes like Balija, Lingayat and some tribals like Asur and nadikuruvar etc...

      

 







Monday, February 3, 2020

Tamil caste haplogroups discussed in ArunKumar paper

 Ganesh Prasad Arun Kumar et al., Population Differentiation of Southern Indian Male Lineages Correlates with Agricultural Expansions Predating the Caste System. PLoS ONE 2012. Open access → LINK [doi:10.1371/journal.pone.0050269]


from http://forwhattheywereweare.blogspot.com/2012/12/y-dna-from-tamils-and-south-indian.html


The categories used are:
  • HTF - Hill Tribe Forager (foragers of Tamil or Malayalam language)
  • HTK - Hill Tribe Kannada (foragers of Kannada language)
  • HTC - Hill Tribe Cremation (tribals who cremate their dead, not sure if silviculturalists)
  • SC - Scheduled Castes (castes traditionally discriminated against, Dalits)
  • DLF - Dry Land Farmers 
  • AW - Artisan and Warrior related castes
  • BRH - Brahmin-related castes with irrigation farming economy

And, as I said then, the bulk of the data is in table 2, which I have the privilege of sharing with you as it really is (in two blocs, as it was in the PDF):



And now finally I can get to discuss the details with the certainty of talking about real data.


Haplogroup C


As the authors note, 90% (66/74) of all the C-M130 samples belong to C5 (M356), while the rest (8/74) tested negative for both C5 and C3 (M217), so I guess we are here before at leas one other subhaplogroup of C (because the likelihood of being Japanese C1 or Australasian C2 or C4 is practically zero).

The eight C* individuals are scattered (table S1) among several groups (all of which also display C5, as well as F*) but notably concentrated among the Piramalai Kallar (4/5 within C), which are a DLF group (corrected upon comment).

Besides C*, which may well be a remnant of either the early Eurasian expansion or of the first backflows from SE Asia (a likely not-so-likely candidate for the origin of macro-haplogroup C), the very notable presence of C5 among tribals and some farmers may well indicate that the origin of C5 is in South Asia, even if the clade also has some presence in Central and West Asia.

Haplogroup C has a high variance in this study (0.80), greatest among DLF (0.89) and HTF (0.81).

(Update: see also appendix below).

Haplogroup E


As we should expect, this lineage of African origin (with important presence in West Eurasia) is only found at low levels among farmers (DLF). It may well be a remnant of early Neolithic flows, being strongly linked with Neolithic in the case of Europe for example.


Paragroup F*


The most striking thing about Paragroup F*, i.e. F(xG,H,J,K), is that it is found at such high numbers and very especially so among the hunter-gatherers, where it is often the main lineage (or lineages). It is also important among dry land farmers and the Valayar (AW class) but it is rare to non-existent among the other caste groups, which may represent relatively recent arrivals.

Something that this confirms, along with other older data about F basal diversity, is that the main Eurasian Y-DNA haplogroup, which is of course F itself, coalesced necessarily in South Asia. 

Said that, I cannot underline enough how relevant is to find rare F sublineages (i.e. F* - so rare that have not even been properly identified by downstream markers yet) among the last forager peoples of South Asia, often as dominant clade.  

Haplotype neighbor-joining exercise was performed however, indicating founder effects (possible new haplogroups to be yet described) among tribals:

Figure 3. Reduced median network of 17 microsatellite haplotypes within haplogroup F-M89.
The network depicts clear isolated evolution among HTF populations with a few shared haplotypes between Kurumba (HTK) and Irula (HTF) populations. Circles are colored based on the 7 Major Population Groups as shown in Figure 1, and the area is proportional to the frequency of the sampled haplotypes. Branch lengths between circles are proportional to the number of mutations separating haplotypes.

However it is also obvious that there is a lot of diversity as well. In fact, paragroup F* does have a high variance in Tamil Nadu (0.81), being highest again among the DLF class (0.85).


Haplogroup G


Haplogroup G does exist in South Asia and this paper makes it evident. More so, its distribution in Tamil Nadu includes some foragers and other tribals, although it is more common among "Neolithic" classes. 

Among these the Ivayengar (BRH) show almost 27% (3/11), however other BRH populations do not show any G, while the DLF ones instead all have relevant G. Therefore this lineage may tentatively be associated in Tamil Nadu with the Neolithic.

Haplogroup G, suggested by the authors to be a Neolithic arrival, has an strikingly high variance in Tamil Nadu (0.83) with top level among the following classes: AW (1.05), SC (0.94) and BRH (0.82). 

Even if the distribution corresponds well with a Neolithic inflow the diversity is surprisingly high and it tells me that more research is needed about this lineage in South Asia. After all it is one of the basal descendants of F, whose coalescence took place no doubt in the subcontinent.


Haplogroup H


Haplgroup H is of course very common in Tamil Nadu but it must be noticed that it is concentrated in the H1(xH1a) category, as well as some notable H(xH1,H2), which tends to weight in favor of a southern ultimate origin of this important South Asian clade (as also proposed in the recent study on the Roma People). 

H* is distributed among many populations, the only class fully excluded being the BHR one, which is generally considered to be a recent historical arrival from the North (mostly confirmed by genetics). Some tribes have the highest values but then some others totally lack it. 

H* has extremely high variance levels in Tamil Nadu  (1.33), being highest among the SC class (1.46), followed by the AW one (1.18) and the DLF one (0.91). This is totally consistent with a South Asian origin of H overall.

H1* is standard issue in all populations. The highest values are among the Kannada-speaking tribals (HTK), followed by cremation-practicing tribals (HTC).

H1a instead is only found in one population at very low levels, strongly suggesting that this clade is not from the region. H2 instead is found at low levels among many groups.

Unlike H*, H1 and H2 have rather low diversity levels in Tamil Nadu: 0.41 and 0.59 respectively.

 

Haplogroup J 


J(xJ2) is found at anecdotal levels in a couple of lower class populations (one tribal and the other SC). It would be particularly interesting if we knew it is not J1 as well - but we don't. 

Most is J2(xJ2a) although J2a3 is also important among several populations.

It is generally believed that J in South Asia is of Neolithic origin and I will not question it but still... notice how important it is among several tribal foragers: >4% in four tribes, levels on average similar to those of farmers and Brahmins.

J2* is rather high in diversity (0.73), notably among the AW class (1.0), while J2a3 is very low instead (0.29).


Paragroup K(xL,R)


Or if you wish paragroups K* and P*, as well as haplogroups O and Q. 

The always interesting K* is found at low levels among some tribals and most DLF populations. However the peak is among Viyengar Brahmins. May it be haplogroup T?, L2?

O in this area is almost for sure O2a brought by Austroasiatic-speaking rice farming tribes in the Neolithic. It is found at low levels in some groups, including the Thoda "cremation tribals" (who look quite "Neolithic" also because of their high levels of J2).

P(xQ,R), which is most common towards Bengal, is found in Tamil Nadu at low levels among diverse populations. On first impression I'd say it's also a Neolithic influence although, of course, in the wider subcontinental region it must be much much older. 

Q is found at low levels in diverse populations being maybe somewhat more common among the Scheduled Castes class.


Haplogroup L


Haplogroup L is an important South Asian lineage with penetration in West and Central Asia and a center of gravity around Sindh (Pakistan), although it is also very common in West and South India. 

In Tamil Nadu L1a (L1 in the table) is common among nearly all sampled populations with peak among the dry land farmers' class.

Instead L1c (formerly L3) is relatively rare, peaking among the Scheduled Castes class. No mention is made of any other L.

Both clades show low variance in the region (0.41 and 0.22 respectively), consistent with their origin being further North.

Haplogroup R


R(xR1a1,R2) is found in several populations at non-negligible levels: near 5% among some tribals, 8% among the Parayar (SC) and the Maravar (DLF), also 12% Mukkuvar (AW) and as much as 19% among some Brahmins (the Brahacharanam who are also high in P*). This could well be R*, R1*, R1a*, R1b, etc. and indicates in my understanding target populations for future research on the hot topic of the ultimate origins of R1 and R1a (see also here). 

R* shows clearly high variance:  0.97 on average, being highest among the DLF class (1.25), followed by the BRH class (0.99)

R1a1, which may well be related to Indoeuropean expansion (or just Neolithic or whatever, better resolution is needed especially in Asia) is found at very high levels among the BRH class (45%), followed by the AW one (20%) other classes show near 10% except the hunter-gatherers (HTF and HTK) who have only anecdotal presence of this lineage. 

R1a1 shows rather low variance (0.41), rather confirming its immigrant origin from North India (incl. maybe Pakistan, Bangla Desh, Nepal...). All classes are similar for this value.

R2 (a South Asian lineage with occasional offshoots into West and Central Asia) is common in all groups except the HTF class. The highest levels (c. 15% avg.) are among cremating tribals and artisan/warrior classes. I'd say that with the likely origin of R2 somewhat to the North of this region, it seems normal that Kannada-speaking tribals (HTK, who must be immigrants from Karnataka or at least strongly influenced by this other Dravidian country's culture) have lots of it, while the more locally native HTF almost lack it instead.

R2 shows mid-level diversity on average (0.65) but the HTK class displays very high diversity for this lineage (1.05).


Different interpretations


Notice that my take and that of the authors on the autochthonous nature of each of the lineages may vary or be debatable. They say the following:

The geographical origins of many of these HGs are still debated. However, the associated high frequencies and haplotype variances of HGs H-M69, F*-M89, R1a1-M17, L1-M27, R2-M124 and C5-M356 within India, have been interpreted as evidence of an autochthonous origins of these lineages during late Pleistocene (10–30 Kya), while the lower frequency within the subcontinent of J2-M172, E-M96, G-M201 and L3-M357 are viewed as reflecting probable gene flow introduced from West Eurasian Holocene migrations in the last 10 Kya [6][7][16][23]. Assuming these geographical origins of the HGs to be the most likely ones, the putatively autochthonous lineages accounted for 81.4±0.95% of the total genetic composition of TN populations in the present study.

Mostly our differences stem on my doubts about the real origins of R1a1 (which could well be West Asian by origin) and that I imagined L1c (aka L3) as native from South Asia (uncertain now admittedly). But otherwise I agree. The hottest issue is no doubt the origin of R1a or R1a1, still unsolved. 


PC Analysis


A quick visual understanding of the relations between the different classes can be obtained from figure 2:

Figure 2. Plots representing the genetic relationships among the 31 tribal and non-tribal populations of Tamil Nadu.
(A) PCA plot based on HG frequencies. The two dimensions display 36% of the total variance. The contribution of the first four HGs is superimposed as grey component loading vectors: the HTF populations clustered in the direction of the F-M89 vector, HTK in the H1-M52 vector, BRH in the R1a1-M17 vector, while the HG L1-M27 is less significant in discriminating populations. (B) MDS plot based on 17 microsatellite loci Rst distances. The two tribal groups (HTF and HTK) are clustered at the left side of the plot while BRH form a distant cluster at the opposite side. The colors and symbols are the same as shown in Figure 1, while population abbreviations are as shown in Table 1.

Check table 1 for population codes but essentially: squares are tribes and circles caste populations; red are the HTF class, green the HTK and yellow the Brahmin-related groups (BRH).

These are the outliers: all the rest, including HTC, cluster together near the (0,0) coordinates.

It is also clearly indicated in Fig. 2A how R1a1, H1 and F* are the strongest defining markers.


Old structure

As always, take age estimates, also provided, with utmost caution and distrust. However I must mention that the main conclusion of the authors is that the haplogroup structure in the region pre-dates the introduction of the caste system as such and is, in their opinion, of Neolithic age.


 __________________________ . __________________________

Appendix (update Dec 2):


Much of the discussion below has been on the origins of haplogroup C. I have been pointed to Hammer 2006 and this haplotype NJ tree (fig 4d) of what was known back in the day as C* and C1. At that time neither Australian C4 nor Asian C5 had been described yet. However Wallacean/Melanesian/Polynesian C2 and NE Asian and Native American C3 are not shown here.

Annotations (C1C4 and root?) by me:



Maybe even more interesting is Fig. 3 from Redd 2002, which shows the whole C haplogroup tree and clearly annotates the likely root (branch to haplogroup B):


While C4 is not obvious here, the fact that South Asian (Indian subcontinent) C* is central to all the haplogroup is again underlined.

The protuberance to the top might be C5, while the one to the bottom may well correspond with the SE Asian cluster above, at least partly. The differences underline the limitations of this STR-based method alone to infer real phylogenies - but it is anyhow much better than nothing.