Carbon isotope ratios of human tooth enamel record the evidence of terrestrial resource consumption during the Jomon period, Japan
Carbon isotope ratios of human tooth enamel record the evidence of terrestrial resource consumption during the Jomon period, Japan
复制标题
人类牙釉质碳同位素比记录日本绳文时代陆地资源消耗的证据
DOI：
10.1002/ajpa.22775
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发表时间：
2015
影响因子：
2.8
通讯作者：
T.E.
中科院分区：
文献类型：
--
作者：
Kusaka;S.;Uno;K.T.;Nakano;T.;Nakatsukasa;M.;Cerling;T.E.
考古遗迹有力地表明，全新世日本狩猎采集者绳纹人以陆生植物作为主要食物来源。然而，骨胶原的碳氮同位素分析表明，它们主要利用海洋资源。我们假设这种不一致源于蛋白质合成途径和牙釉质与骨胶原中蛋白质衍生碳的不同比例。骨胶原的碳同位素比率反映了膳食蛋白质的碳同位素比率，可能提供了饮食的偏倚信号，而牙釉质的碳同位素比率反映了所有宏量营养素（碳水化合物、脂质和蛋白质）的综合饮食。方法为了评估考古证据与骨胶原同位素数据在饮食推断上的差异，本研究对绳纹时代中后期（距今5000 - 2300年）四个沿海遗址的绳纹牙釉质碳同位素进行了研究。结果绳纹人牙齿的碳同位素含量与同时期陆生哺乳动物的碳同位素含量相当，表明植物和陆生哺乳动物是绳纹人主要的食物来源。牙釉质对海洋资源的饮食依赖性显著低于骨胶原。牙釉质和胶原蛋白的同位素差异以及胶原蛋白中的氮同位素差异在个体和种群水平上呈负相关，表明日粮中陆源和海洋资源的比例是不同的。结论本研究强调了牙釉质和骨胶原耦合在碳同位素研究中重建史前人类饮食的有效性。[J] .中国生物医学工程学报，2016,33(2):444 - 444。©2015 Wiley期刊公司
ObjectiveArchaeological remains strongly suggest that the Holocene Japanese hunter‐gatherers, the Jomon people, utilized terrestrial plants as their primary food source. However, carbon and nitrogen isotope analysis of bone collagen indicates that they primarily exploited marine resources. We hypothesize that this inconsistency stems from the route of protein synthesis and the different proportions of protein‐derived carbon in tooth enamel versus bone collagen. Carbon isotope ratios from bone collagen reflect that of dietary protein and may provide a biased signal of diet, whereas isotope ratios from tooth enamel reflect the integrated diet from all macronutrients (carbohydrates, lipids, and proteins).MethodsIn order to evaluate the differences in inferred diet between the archaeological evidence and bone collagen isotope data, this study investigated carbon isotopes in Jomon tooth enamel from four coastal sites of the Middle to Late–Final Jomon period (5,000–2,300 years BP).ResultsCarbon isotope ratios of human teeth are as depleted as coeval terrestrial mammals, suggesting that C3plants and terrestrial mammals were major dietary resources for the Jomon people. Dietary dependence on marine resources calculated from enamel was significantly lower than that calculated from bone collagen. The discrepancy in isotopic ratios between enamel and collagen and the nitrogen isotope ratio in collagen shows a negative correlation on individual and population levels, suggesting diets with variable proportions of terrestrial and marine resources.ConclusionThis study highlights the usefulness of coupling tooth enamel and bone collagen in carbon isotopic studies to reconstruct prehistoric human diet. Am J Phys Anthropol 158:300–311, 2015. © 2015 Wiley Periodicals, Inc.