Biological affinities of Brazilian pre-colonial coastal communities explored through bootstrapped biodistances of dental non-metric traits

Autor(es)

Fidalgo, Daniel ; Wesolowski, Veronica ; Hubbe, Mark

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ARCHAEOLOGICAL SCIENCE; v. 138, p. 9-pg., 2022-01-20.

Resumo

Based on dental morphology, it was recently suggested that the Southeast Coast of Brazil was inhabited by different biological groups throughout the Holocene. Among those that inhabited Sa similar to o Paulo state, coastal shellmound builders seem biologically distant from riverine shellmound builders. Additionally, individuals that later built ichthyological sites are also biologically distant from both early coastal or riverine populations. However, mainly due to low sample sizes, such conclusions may not be reliable, and require further inquiry. Here, we explore the confidence interval of biological affinities among five archaeological series (Piacaguera, Buraca similar to o, Ten ' orio, Mar Virado and Moraes), composed by 128 individuals from different chronological and archaeological backgrounds. We use a bootstrapping analysis of biodistances, which illustrates the expected error that results from sample sizes, by generating density estimations based on the observed biological affinities among series. Our results contradict previous claims based on dental analyses by showing that individuals from ichthyological sites cannot actually be considered distinct from Southeast coastal and riverine shellmound builders. On the other hand, it shows that early coastal and riverine shellmound builders are not biologically related, thus supporting prior assumptions of high phenotypic variation among Southeast shellmound builders, at least within the scope of Sa similar to o Paulo state. Finally, although shellmound builders are related to individuals from ichthyological sites to some extent, early and later coastal shellmound builders of this area do not appear to be biologically related, which further highlights the complex dynamics of population movement in the area. (AU)

• Processo FAPESP: 19/18289-3 - Morfologia dentária dos construtores de sambaquis fluviais e costeiros do litoral Sul-Sudeste do Brasil
• Beneficiário: Daniel Filipe Ferreira Fidalgo
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado
• Processo FAPESP: 17/20637-4 - Morfologia dentária de séries osteológicas humanas pré-coloniais do litoral Sudeste do Brasil: contribuições para o estudo de variabilidade morfológica em populações sambaquieiras
• Beneficiário: Daniel Filipe Ferreira Fidalgo
• Modalidade de apoio: Bolsas no Brasil - Doutorado