Short-term variability of human diet at Basketmaker II Turkey Pen Ruins, Utah: Insights from bulk and single amino acid isotope analysis of hair
Short-term variability of human diet at Basketmaker II Turkey Pen Ruins, Utah: Insights from bulk and single amino acid isotope analysis of hair
复制标题
犹他州篮子二号火鸡围栏遗址人类饮食的短期变化：来自头发的批量和单一氨基酸同位素分析的见解
DOI：
10.1016/j.jasrep.2015.10.032
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Richards
中科院分区：
文献类型：
--
作者：
Catherine G. Cooper;K. Lupo;R. G. Matson;W. Lipe;Colin Smith;M. Richards
从犹他州的篮子制造者II土耳其笔遗址出土的人类头发束使用稳定的碳和氮同位素分析进行了检查，表明这些人严重依赖玉米，但他们的饮食在几个月内波动。通过连续的散装碳和氮分析和连续的单个氨基酸碳同位素分析的头发，这项研究解决了人类饮食在该网站如何变化在一个月内，如果驯化火鸡（Meleagris gallopavo）的饮食的一部分，在一年中的任何时间点的问题。头发碳同位素值范围为-9.2 ‰ ~-12.4 ‰，平均值为-10.8 ± 1.2;氮同位素值范围为6.0‰ ~ 7.3‰，平均值为6.6‰ ± 0.5。单个氨基酸的δ 13 C值也存在变异性，单个氨基酸的陆地C4特征的总体模式（亮氨酸的δ 13 C平均为-17.8 ‰ ± 1.7）。Δ 13 C缬氨酸-苯丙氨酸的含量范围为-1.6 ‰至2.6‰，也强烈表明它们是陆生食物。从这里提出的稳定同位素数据，我们认为，BMII饮食，而大量的玉米为基础，并在一年中变化，火鸡从来没有一个主食。
Strands of human hair excavated from Basketmaker II Turkey Pen Ruins in Utah were examined using stable carbon and nitrogen isotope analysis and show that these individuals were heavily reliant on maize but their diet fluctuated over a period of months. Through serial bulk carbon and nitrogen analysis and serial single amino acid carbon isotope analysis of individual strands of hair, this study addresses the questions of how human diets at the site varied over a period of months and if domesticated turkeys (Meleagris gallopavo) were part of the diet during any point of the year. Hair carbon isotope values range from − 9.2‰ to − 12.4‰ with an average of − 10.8 ± 1.2, and nitrogen isotope values range from 6.0‰ to 7.3‰ with an average of 6.6‰ ± 0.5. There was also variability in the single amino acid δ13C values, with an overall pattern of terrestrial C4signatures of individual amino acids (δ13C for leucine averaged − 17.8‰ ± 1.7). Δ13Cvaline-phenylalaninevalues ranging from − 1.6‰ to 2.6‰ also point strongly to a terrestrial diet. From the stable isotope data presented here, we suggest that BMII diet, while being heavily maize based, did vary during the year, and that turkeys were never a diet staple.