Previous studies have identified differences based on sex in adult diet and age-based changes in the funerary treatment of children in the Neolithic of northern France. This preliminary study investigates sex-based differences and age-related changes in diet and mobility in childhood in comparison to adulthood.

Nineteen individuals from the Neolithic Yonne valley (Paris Basin) were analyzed for δ¹³C and δ¹⁵N in dentine of the second permanent molar (M2) and 15 also for δ³⁴S. Analyses were performed on different tooth parts depending on the individuals and targeted different age groups: bulk coronal (ca. 2.5–8.5 years; n = 16 adults) and root dentine (ca. 8.5–12 years; n = 1 juvenile) and dentine microsections of the entire tooth (6 age groups between 2.5 and 16 years old; n = 2 adults).

Higher δ¹⁵N values in dentine than in adult bone reflect children’s dietary specificity, possibly due to their nutritional needs during growth. There is no mean isotopic difference in coronal dentine between males and females under 9 years old. Dietary sex-based division occurs later. Two isotopic shifts are observed on the incremental profiles, indicative of social transitions, possibly sex-related, around 8–9 and 14 years old. The variability of δ³⁴S values highlights different mobility patterns between the sexes and argues for patrilocality. These results echo previous studies and offer a promising perspective which must be investigated further on a larger sample size.

先前的研究已经确定了基于成人饮食性别的差异以及法国北部新石器时代儿童丧葬治疗的年龄变化。这项初步研究调查了与成年期相比，儿童期饮食和流动性方面的性别差异和年龄相关变化。

对来自新石器时代约讷河谷（巴黎盆地）的 19 个个体进行了第二恒磨牙 (M2) 牙本质的δ ¹³ C 和 δ ¹⁵ N分析，另外¹⁵个个体也分析了 δ ³⁴ S。根据个体对不同的牙齿部位进行了分析并针对不同年龄组：大块冠状（约 2.5-8.5 岁；n = 16 名成人）和牙根牙本质（约 8.5-12 岁；n = 1 名青少年）和整个牙齿的牙本质显微切片（2.5 岁之间的 6 个年龄组）和 16 岁；n = 2 名成人）。

牙本质中的δ ¹⁵ N 值高于成人骨骼，这反映了儿童的饮食特殊性，这可能是由于他们在生长过程中的营养需求所致。9岁以下男性和女性的冠状牙本质没有平均同位素差异。基于饮食性别的分裂发生较晚。在增量剖面上观察到两个同位素变化，表明社会转型，可能与性别有关，大约在 8-9 岁和 14 岁之间。δ ³⁴ S 值的可变性突出了两性之间不同的流动模式，并支持父系所在地。这些结果与先前的研究相呼应，并提供了一个有希望的观点，必须在更大的样本量上进一步研究。