Oral health and the postcontact adaptive transition: A contextual reconstruction of diet in Mórrope, Peru.

This work explores the effects of European contact on Andean foodways in the Lambayeque Valley Complex, north coast Peru. We test the hypothesis that Spanish colonization negatively impacted indigenous diet. Diachronic relationships of oral health were examined from the dentitions of 203 late-pre-Hispanic and 175 colonial-period Mochica individuals from Mórrope, Lambayeque, to include observations of dental caries, antemortem tooth loss, alveolar inflammation, dental calculus, periodontitis, and dental wear. G-tests and odds ratio analyses across six age classes indicate a range of statistically significant postcontact increases in dental caries, antemortem tooth loss, and dental calculus prevalence. These findings are associated with ethnohistoric contexts that point to colonial-era economic reorganization which restricted access to multiple traditional food sources. We infer that oral health changes reflect creative Mochica cultural adjustments to dietary shortfalls through the consumption of a greater proportion of dietary carbohydrates. Simultaneously, independent skeletal indicators of biological stress suggest that these adjustments bore a cost in increased nutritional stress. Oral health appears to have been systematically worse among colonial women. We rule out an underlying biological cause (female fertility variation) and suggest that the establishment of European gender ideologies and divisions of labor possibly exposed colonial Mochica women to a more cariogenic diet. Overall, dietary change in Mórrope appears shaped by local responses to a convergence of colonial Spanish economic agendas, landscape transformation, and social changes during the postcontact transition in northern Peru. These findings also further the understandings of dietary and biocultural histories of the Western Hemisphere.

Economic intensification and degenerative joint disease: life and labor on the postcontact north coast of Peru.

This study tests the hypothesis that the colonial economy of the Lambayeque region of northern coastal Peru was associated with a mechanically strenuous lifestyle among the indigenous Mochica population. To test the hypothesis, we documented the changes in the prevalence of degenerative joint disease (or DJD) in human remains from the late pre-Hispanic and colonial Lambayeque Valley Complex. Comparisons were made using multivariate odds ratios calculated across four age classes and 11 principle joint systems corresponding to 113 late pre-Hispanic and 139 postcontact adult Mochica individuals. Statistically significant patterns of elevated postcontact DJD prevalence are observed in the joint systems of the shoulder, elbow, wrist, and knee. More finely grained comparison between temporal phases indicates that increases in prevalence were focused immediately following contact in the Early/Middle Colonial period. Analysis of DJD by sex indicates postcontact males experienced greater DJD prevalence than females. Also, trends between pre- and postcontact females indicate nearly universally elevated DJD prevalence among native colonial women. Inferred altered behavioral uses of the upper body and knee are contextualized within ecological, ethnohistoric, and ethnoarchaeological frameworks and appear highly consistent with descriptions of the local postcontact economy. These patterns of DJD appear to stem from a synergism of broad, hemispheric level sociopolitical alterations, specific changes to Mochica activity and behavior, regional economic intensification, and local microenvironmental characteristics, which were all focused into these biological outcomes by the operation of a colonial Spanish political economy on the north coast of Peru from A.D. 1536 to 1751.

Contact in the Andes: bioarchaeology of systemic stress in colonial Mórrope, Peru.

The biocultural interchange between the Eastern and Western Hemispheres beginning in the late fifteenth century initiated an unprecedented adaptive transition for Native Americans. This article presents findings from the initial population biological study of contact in the Central Andes of Peru using human skeletal remains. We test the hypothesis that as a consequence of Spanish colonization, the indigenous Mochica population of Mórrope on the north coast of Peru experienced elevated systemic biological stress. Using multivariate statistical methods, we examine childhood stress reflected in the prevalence of linear enamel hypoplasias and porotic hyperostosis, femoral growth velocity, and terminal adult stature. Nonspecific periosteal infection prevalence and D(30+)/D(5+) ratio estimations of female fertility characterized adult systemic stress. Compared to the late pre-Hispanic population, statistically significant patterns of increased porotic hyperostosis and periosteal inflammation, subadult growth faltering, and depressed female fertility indicate elevated postcontact stress among both children and adults in Mórrope. Terminal adult stature was unchanged. A significant decrease in linear enamel hypoplasia prevalence may not indicate improved health, but reflect effects of high-mortality epidemic disease. Various lines of physiological, archaeological, and ethnohistoric evidence point to specific socioeconomic and microenvironmental factors that shaped these outcomes, but the effects of postcontact population aggregation in this colonial town likely played a fundamental role in increased morbidity. These results inform a model of postcontact coastal Andean health outcomes on local and regional scales and contribute to expanding understandings of the diversity of indigenous biological variation in the postcontact Western Hemisphere.