tag:blogger.com,1999:blog-7785493.post8545286210533331632..comments2024-01-04T04:11:55.717+02:00Comments on Dienekes’ Anthropology Blog: Neandertal demise followed contact with modern humans (but not immediately)Dienekeshttp://www.blogger.com/profile/02082684850093948970noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-7785493.post-74568605338042534622014-08-29T11:34:50.637+03:002014-08-29T11:34:50.637+03:00I am wondering what happened with the upper arqueo...I am wondering what happened with the upper arqueological levels in the El Esquilleu Cave in Northern Spain, with supposedly Mousterian industry at 23,000 B.C.Iridiohttps://www.blogger.com/profile/11414508385489395861noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-74318608285306937872014-08-23T17:47:07.257+03:002014-08-23T17:47:07.257+03:00Has anyone estimated the number of calories it wou...Has anyone estimated the number of calories it would take to support a Neanderthal? Suspect it might be more than a modern human needs. In which case it would be interesting to model what happens to populations of both when competing for limited food resources... Anonymoushttps://www.blogger.com/profile/08071679309100275155noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-46803269577069025972014-08-21T06:48:58.696+03:002014-08-21T06:48:58.696+03:00Could malaria be something to do with this?
If AM...Could malaria be something to do with this?<br /><br />If AMH moved north because of the climate getting warmer then malaria would have moved north also.<br /><br />http://www.ata.org.tn/fichier_PDF/Article2.pdf<br /><br />A review on the genetics of Sardinia mentions that malaria resistance like thalassemia has a distinct pattern of high values in the coastal regions (which were malarial until the late 1940s) and much lower values in the central mountains.<br /><br />"The distribution of the two alleles is not uniform throughout the island and a <br />negative and highly significant correlation with altitude was found (Siniscalco et al., <br />1966; Vona and Porcella, 1984). The villages mainly affected by the presence of the two <br />mutants are those of the plains and the coastal hills. The mountainous regions have <br />lower frequencies of the two alleles. This correlation is supported by the trend of the <br />two genes in the populations distributed along an axis running from the gulf of Oristano, <br />in the west of the island, across the central mountainous area, to the eastern coastal side. <br />The frequencies are very high in the two coastal sides and decrease sharply towards the <br />central mountainous area (Bodmer and Cavalli Sforza, 1977)."<br /><br /><br /><br />As malaria resistant adaptation often seem to have very negative side effects then if a population moved out of Africa into the colder north they might lose the malaria resistance genes they had originally. So if it got warmer again and malaria spread north they'd have a problem whereas the newly arrived AMH wouldn't as they'd still retain theirs.<br /><br />I don't suppose malaria leaves detectable signs in ancient bones?Greyhttps://www.blogger.com/profile/13398462488549380796noreply@blogger.comtag:blogger.com,1999:blog-7785493.post-78385630057003624862014-08-21T05:12:01.947+03:002014-08-21T05:12:01.947+03:00"Comparing the data with results obtained fro..."Comparing the data with results obtained from the earliest dated AMH sites in Europe, associated with the Uluzzian technocomplex5, allows us to quantify the temporal overlap between the two human groups. The results reveal a significant overlap of 2,600–5,400 years (at 95.4% probability). This has important implications for models seeking to explain the cultural, technological and biological elements involved in the replacement of Neanderthals by AMHs. A mosaic of populations in Europe during the Middle to Upper Palaeolithic transition suggests that there was ample time for the transmission of cultural and symbolic behaviours, as well as possible genetic exchanges, between the two groups". <br /><br />Possibly the most sensible comment on the subject I've ever read. terrythttps://www.blogger.com/profile/17327062321100035888noreply@blogger.com