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Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/22810
Title: Assessing Migration and Demographic Change in pre-Roman and Roman Period Southern Italy Using Whole-Mitochondrial DNA and Stable Isotope Analysis
Other Titles: The Biogeographic Origins of Iron Age Peucetians and Working-Class Romans From Southern Italy
Authors: Emery, Matthew
Advisor: Prowse, Tracy
Poinar, Hendrik
Schwarcz, Henry
Department: Anthropology
Keywords: Ancient DNA analysis; Roman bioarchaeology; stable isotope analysis; population history; Iron Age Italy; Roman Vagnari; migration
Publication Date: Jun-2018
Abstract: Assessing population diversity in southern Italy has traditionally relied on archaeological and historic evidence. Although informative, these lines of evidence do not establish specific instances of within lifetime mobility, nor track population diversity over time. In order to investigate the population structure of ancient South Italy I sequenced the mitochondrial DNA (mtDNA) from 15 Iron Age (7th – 4th c. BCE) and 30 Roman period (1st – 4th c. BCE) individuals buried at Iron Age Botromagno and Roman period Vagnari, in southern Italy, and analyzed δ18O and 87Sr/86Sr values from a subset of the Vagnari skeletal assemblage. Phylogenetic analysis of 15 Iron Age mtDNAs together with 231 mtDNAs spanning European prehistory suggest that southern Italian Iapygians share close genetic affinities to Neolithic populations from eastern Europe and the Near East. Population pairwise analysis of Iron Age, Roman, and mtDNA datasets spanning the pan-Mediterranean region (n=357), indicate that Roman maternal genetic diversity is more similar to Neolithic and Bronze Age populations from central Europe and the eastern Mediterranean, respectively, than to Iron Age Italians. Genetic distance between population age categories imply moderate mtDNA turnover and constant population size during the Roman conquest of South Italy in the 3rd century BCE. In order to determine the local versus non-local demographic at Vagnari, I measured the 87Sr/86Sr and 18O/16O of composition of 43 molars, and the 87Sr/86Sr composition of an additional 13 molars, and constructed a preliminary 87Sr/86Sr variation map of the Italian peninsula using disparate 87Sr/86Sr datasets. The relationship between 87Sr/86Sr and previously published δ18O data suggest a relatively low proportion of migrants lived at Vagnari (7%). This research is the first to generate whole-mitochondrial DNA sequences from Iron Age and Roman period necropoleis, and demonstrates the ability to gain valuable information from the integration of aDNA, stable isotope, archaeological and historic evidence.
URI: http://hdl.handle.net/11375/22810
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