Here we report Sr and Zn isotope ratios of teeth of medieval to early modern Breton people a population whose diet is known from historical, archeological and collagen isotope data. Most of the population, buried in the Dominican convent of Rennes, France, consists of parliamentary nobles, wealthy commoners and ecclesiastics, who had a diet rich in animal products. Our aim is to assess how the Zn isotope ratios of their teeth compare to those of other French historical populations previously studied, which were characterized by cereal-based diets, and those of modern French individuals, who daily eat animal products. We describe a clear offset (∼0.35‰) between local and non-local human individuals in Zn isotope ratios. The δ⁶⁶Zn_tooth values of local individuals overlap that of modern French people, and are lower than those of local carnivores. Non-local δ⁶⁶Zn values are similar to those of historical individuals analyzed previously. We conclude the lower Zn isotope ratios of local humans relative to the associated fauna can be explained by the consumption of carnivorous fish and pork, in agreement with historical, zooarchaeological and collagen (C, N, S) isotope data. Zn isotopes could therefore be a tracer of fish and/or substantial meat consumption in ancient populations.

中文翻译：

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使用锌同位素比率追踪鱼类和肉类的密集消费：来自不列颠历史人口的证据（法国雷恩）。

在这里，我们报告中世纪和近现代的布列塔尼人牙齿的Sr和Zn同位素比，该人群的饮食从历史，考古和胶原同位素数据中得知。大部分人口被埋葬在法国雷恩的多米尼加修道院内，他们中的议会贵族，富裕的平民和教会牧师的饮食都富含动物产品。我们的目的是评估其牙齿的Zn同位素比与先前研究的其他法国历史人群（以谷物为基础的饮食为特征）以及现代法国个体（每天食用动物产品）的锌同位素比如何。我们在锌同位素比率中描述了本地人和非本地人之间的明显偏差（〜0.35‰）。的δ ⁶⁶锌_齿当地人的价值观与现代法国人的价值观重叠，但低于当地食肉动物的价值观。非本地δ ^66个锌值类似于那些历史人物的先前分析。我们得出结论，与历史，动物考古学和胶原（C，N，S）同位素数据相吻合，可以通过食用肉食性鱼类和猪肉来解释相对于相关动物而言，本地人类较低的Zn同位素比率。因此，锌同位素可能是古代人口中鱼类和/或大量肉类消费的示踪剂。