АвторТема: Genetic studies on the prehispanic population buried in Punta Azul cave  (Прочитано 1432 раз)

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Genetic studies on the prehispanic population buried in Punta Azul cave (El Hierro, Canary Islands)
Alejandra C. Ordóñez, , R. Fregel, , A. Trujillo-Mederos, , Montserrat Hervella, , Concepción de-la-Rúa, Matilde Arnay-de-la-Rosa

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Highlights
• A total of 61 samples from Punta Azul were analyzed for ancient DNA.
• Success rate: molecular sexing 88.5%, uniparental markers 90.16%, STR 45.9%.
• There is a complete fixation of the H1-16260 mtDNA lineage.
• Y-chromosome results show the presence of three lineages: E-M81, R-M269, and E-M33.
• Matrilineality could explain the behaviors in maternal and paternal lineages.

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Abstract
The aim of this study was to establish the genetic studies of the population from one of the most important known aboriginal funerary spaces of the island of El Hierro (Canary Islands), the Punta Azul cave, which harbors remains of 127 individuals. Sixty-one adult tibiae were examined, 32 left and 29 right. Radiocarbon dating yields an antiquity of 1015–1210 AD. We have obtained an overall success rate of 88.5% for the molecular sexing, and of 90.16% for the uniparental markers. Short tandem repeats (STR) profiles were also possible for 45.9% of the samples. This performance is a consequence of the good conservation of the bones in their archaeological context. The mtDNA composition of the sample is characterized by the complete fixation of the H1-16260 lineage. These results can be explained by a mixture of consecutive founding events, a bottleneck episode at the beginning of the colonization and/or as a consequence of genetic drift. Paternal lineages were also affected by these processes but in a less acute way. These differences lead us to propose social behaviors as an explanation for this difference. The maternal transmission of the lineages, mentioned in ethnohistorical sources of the Archipelago, could be an explanation. These results could be in agreement with endogamous practices, but the autosomal STR results indicate a relative high diversity. These results have allowed us to characterize the Punta Azul cave population and see the way in which geographical isolation, the process of adaptation and specific social behaviors affected the aboriginal population of the Island.

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Оффлайн YaroslavАвтор темы

  • Сообщений: 17896
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  • Рейтинг +4309/-13
  • 76% East Europe + 17% Finland
  • Y-ДНК: J1a2b1a ZS3067, ЖМ: I2a1a2b1a1a1a1 FT37540, МЖМ: G2a2b1a1a1a2b2a FT159945
  • мтДНК: K1b1a1 T199C, МЖ: H13a1a1d
Re: Genetic studies on the prehispanic population buried in Punta Azul cave
« Ответ #2 : 03 Декабрь 2016, 18:03:43 »
Отлично, спасибо за ссылку!

 

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