Departamento de Geografía e Historia, Unidad de Docencia e Investigación de Prehistoria, Arqueología e Historia Antigua, Facultad de Humanidades, Universidad de La Laguna, San Cristobal de La Laguna, Spain.
Departamento de Ciencias Históricas, Facultad de Geografía e Historia, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain.
Am J Biol Anthropol. 2023 Oct;182(2):300-317. doi: 10.1002/ajpa.24828. Epub 2023 Aug 2.
This study presents isotopic information for incremental dentine collagen and bone bulk collagen from individuals from the Canary Islands (Tenerife and Gran Canaria) to explore dietary differences during childhood life.
Eight individuals have been studied, which comprises 122 δ N and δ C incremental dentine measurements and eight bulk bone collagen analyses. A baseline of potentially consumed food sources has been developed for comparative purposes. A food reconstruction using isotopic transferred signals (FRUITS) model of probable contributions of each food source towards the diet of each individual has been developed. All samples but one belongs to the later period of indigenous occupation of the archipelago.
The dentine collagen data are presented in correlated δ C and δ N plots per individual, showing the isotopic changes throughout time. δ N values for each individual tend to be variable whereas δ C data are generally more stable with a range of +9.1 to +14‰ for δ N and -17.4 to -20.8‰ for δ C.
The isotopic analysis allows for the reconstruction of eight dietary profiles, which allow us to estimate the different dietary protein sources. The FRUITS model shows different percentages of the primary food sources for each individual. Where both δ C and δ N are elevated, this could be indicative of a higher marine contribution to the diet. There appear to be two main dietary profiles identifiable in the dataset and these may be related to changes in status or place of residence. Short-term variations in δ C and δ N and opposing co-variance of isotopic values can be indicative of nutritional stress, although metabolic changes during growth are also considered.
本研究提供了来自加那利群岛（特内里费岛和大加那利岛）个体的增量牙本质胶原和骨皮质胶原的同位素信息，以探讨儿童期生活中的饮食差异。
研究了 8 个人，其中包括 122 个 δ N 和 δ C 增量牙本质测量值和 8 个骨皮质胶原分析值。为了比较目的，建立了一个潜在消耗食物来源的基线。使用同位素传递信号（FRUITS）模型，建立了个体饮食中每种食物来源可能贡献的食物重建模型。除了一个样本外，所有样本都属于该群岛后期的原住民居住时期。
牙本质胶原数据以每个个体的相关 δ C 和 δ N 图呈现，显示了随时间的同位素变化。每个个体的 δ N 值往往变化较大，而 δ C 值通常更稳定，范围为 δ N +9.1 到 +14‰，δ C -17.4 到 -20.8‰。
同位素分析允许重建 8 种饮食模式，这使我们能够估计不同的饮食蛋白质来源。FRUITS 模型显示了每个个体的主要食物来源的不同百分比。如果 δ C 和 δ N 都升高，这可能表明饮食中海洋贡献更高。在数据集中似乎可以识别出两种主要的饮食模式，这可能与地位或居住地的变化有关。δ C 和 δ N 的短期变化以及同位素值的相反协方差可能表明存在营养压力，尽管也考虑了生长期间的代谢变化。
