tag:blogger.com,1999:blog-7785493.post1299786471156069433..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: The role of Taiwan in the Austronesian expansionDienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-7785493.post-60443797910505251952013-04-07T08:34:27.428+03:002013-04-07T08:34:27.428+03:00"Genetic distances among Taiwanese aborigines..."Genetic distances among Taiwanese aborigines (Gst50.040195) are such that inter-population variance indices are higher than those found among Pacific populations (Gst50.026919) which are geographically isolated and contain major biogeographical barriers between them in the form of vast open oceanic distances" <br /><br />Taiwanese population does not have to be very ancient to be more ancient than the Pacific population. The latter is only 3000 years old at most, and much of the eastern region is even younger. <br /><br />"For example the Maori with their more homogeneous population could represent the an earlier cultural wave with later waves coming from a more admixed source population with the same cultural behaviours". <br /><br />The 'wave' idea is widely accepted. Much of the Melanesian look of Austronesian people beyond the northern Solomon Islands is almost certainly the result of later waves from northern Solomons and the original Bismark archipelago population. However the homogeneous nature of the Maori population is probaly the result of widespread cultural connections after the initial colonisation. However it is also widely accepted that the culture of Central Polynesia has been changed significantly by developements both within the region and from further west. So in a sense Maori do represent the earliest cultural wave that began in Taiwan and developed further during its short stay in the Bismark Archipelago. terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-88921065680698861042013-04-06T19:18:57.664+03:002013-04-06T19:18:57.664+03:00Wasn't there a paper out in 2008 or so that al...Wasn't there a paper out in 2008 or so that also showed the Dai to be the ancestors of Austronesians? I think they labeled them "Taiwan Natives" though. <br />http://www.ncbi.nlm.nih.gov/pubmed/18482451Edhttps://www.blogger.com/profile/17271446965804167259noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-35575827498370012082013-04-06T00:24:38.104+03:002013-04-06T00:24:38.104+03:00Past studies have indicated that there were multip...Past studies have indicated that there were multiple waves out of Taiwan and probably reverse flow.<br /><br />These differential effects could also represent variations in the source population over time. For example the Maori with their more homogeneous population could represent the an earlier cultural wave with later waves coming from a more admixed source population with the same cultural behaviours.Anonymoushttps://www.blogger.com/profile/11000684388615334278noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-83050779261401128352013-04-05T01:20:37.004+03:002013-04-05T01:20:37.004+03:00Of interest:
"Genetic distances among Taiwan...Of interest:<br /><br />"Genetic distances among Taiwanese aborigines<br />(Gst50.040195) are such that inter-population variance<br />indices are higher than those found among Pacific populations<br />(Gst50.026919) which are geographically isolated<br />and contain major biogeographical barriers between<br />them in the form of vast open oceanic distances. Corroborating<br />these statements are the low heterozygosity<br />values (Table 1), severe heterozygote deficiencies (Supporting<br />Information Table 10), high number of loci<br />exhibiting positive inbreeding coefficient correlations<br />(Supporting Information Table 11) and the lowest intrapopulation<br />variance of all the groups of populations analyzed<br />(Hs50.743899) exhibited by the Taiwanese tribes<br />(Table 2). Altogether, these data suggest that while Taiwanese<br />tribes are genetically different from each other,<br />they are internally highly homogenous, likely due to continued<br />endogamy and genetic drift."<br /><br />Contrary to the logic of out-of-Africa theorists, the Taiwanese example clearly shows that low intragroup genetic diversity doesn't mean that the population is recent. It's high intergroup genetic diversity coupled with high linguistic differentiation that's the better predictor of a source population. German Dziebelhttps://www.blogger.com/profile/10703679732205862495noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-17991414056497307972013-04-05T01:02:08.742+03:002013-04-05T01:02:08.742+03:00"suggesting either an asymmetric migration ou..."suggesting either an asymmetric migration out of Taiwan or the loss of certain genetic signatures in some of the Taiwanese tribes due to endogamy, isolation, and/or drift". <br /><br />Probably both. <br /><br />"our results suggest that Daic populations from Southern China are the likely forefathers of the Taiwanese aborigines" <br /><br />That is new, but not unexpected, information. Linguists have long proposed a connection between Daic and Austronesian. <br /><br />"populations within Taiwan show a greater genetic impact on groups at the extremes of the current domain than populations from Indonesia, Mainland, or Southeast Asia lending support to the “Out of Taiwan” hypothesis". <br /><br />Again supporting the traditional view. I hope Maju reads this. However I'm sure he would be able to find some problem with the research. <br /><br />"It is of interest that only two of the Pacific populations,<br />NZA and NZEP, both from New Zealand, are<br />impacted by mainland Chinese groups in the admixture<br />proportions (Table 4)". <br /><br />I suspect the mainland Chinese admixture is not ancient. My brother's wife is Maori but has known Chinese ancestry via a commercial gardener one of her great grandmothers worked for. Many Chinese came out as goldminers but didn't bring women. Racist attitudes limited the options for those who didn't return to China. terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.com