We test the antiquity of a dietary life history model on Tutuila, American Samoa. Stable carbon and nitrogen isotopes in serial, age-adjusted samples of first and third molars reveal isotopic biographies of 16 individuals from five late Holocene (200-1100 RCYBP) sites. Combining this with bone collagen from a larger sample of individuals, we document a patterned dietary life history on the island. Between ages zero and two years, infants show elevated delta N-15 values, consistent with a diet rich in breast milk. In early childhood (two-10 years), individuals shift to a diet with higher delta C-13 values, suggesting greater marine protein intake. Around age 10 years, males shift to a more terrestrially focused diet, while females retain a higher marine signature. After similar to 20 years of age, males and females are more similar in diet, with a greater contribution from terrestrial resources. We argue that these shifts reflect diet-marked social transitions in life histories, especially social status and eating order within households, as predicted from the ethnographic model. When contextualized with other archaeological data, such as mortuary patterns and social organization, the isotopic biographic approach facilitates examination of diet-linked social transitions of individuals as they aged within ancient societies.
1.Univ Calif Davis, Dept Anthropol, One Shields Ave, Davis, CA 95616 USA 2.Calif State Univ Chico, Dept Anthropol, 400 West First St, Chico, CA 95929 USA 3.Kentucky Heritage Council, State Hist Preservat Off, 410 High St, Frankfort, KY 40601 USA
Recommended Citation:
Eerkens, Jelmer W.,Bartelink, Eric J.,Bartel, Julianna,et al. Isotopic Insights into Dietary Life History, Social Status, and Food Sharing in American Samoa[J]. AMERICAN ANTIQUITY,2019-01-01,84(2):336-352