The people of Jabuticabeira II: reconstruction of the way of life in a Brazilian shellmound.
Sambaquis are huge shellmounds built along almost the entire Brazilian coast between 8000 and 600 years ago. In the present article, 14 osteological markers from 89 individuals excavated at the Sambaqui Jabuticabeira II (2890+/-55/2186+/-60 BP) are analyzed in order to reconstruct the population's health status and way of life. The present palaeopathological findings (such as lower frequency of degenerative joint diseases in legs, as compared to arms, and the rarity of traumas) together with archaeological findings support the idea of nearby resource abundance and infrequent interpersonal competition. The presence of auditory exostoses mainly in males corroborates previous findings indicating the importance of marine resources. The low caries frequency and the high degrees of dental wear point to a diet poor in cariogenic food, and rich in abrasives such as sand, shell fragments and phytoliths. This suggests a broader diet, based on marine protein as well as plants, than previously thought. The etiology of cribra orbitalia could be explained by gastrointestinal parasites or other sources of physiological stress. These parasites, in turn, could have led to higher frequencies of infectious diseases, either by the debilitation of the immune system or by the direct contact with infectious agents. Despite the periods of illness various individuals experienced, the daily life among the builders of the Sambaqui Jabuticabeira II seems to have been relatively easy due to the abundance and predictability of resources and the paucity of violent traumas.
Okumura
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Laboratório de Estudos Evolutivos Humanos, Universidade de São Paulo, Brazil. okumuram@usp.br
Eggers
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D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000884:Anthropology, Cultural; D000885:Anthropology, Physical; D001938:Brazil; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004032:Diet; D005260:Female; D006304:Health Status; D006801:Humans; D007107:Immune System; D007223:Infant; D007231:Infant, Newborn; D007592:Joint Diseases / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010272:Parasitic Diseases; D017747:Seafood; D014072:Tooth Abrasion