Berbesque J Colette, Hoover Kara C
Centre for Research in Evolutionary, Social and Inter-Disciplinary Anthropology, University of Roehampton, London, United Kingdom.
Department of Anthropology, University of Alaska Fairbanks, Fairbanks, AK, United States of America.
PeerJ. 2018 Feb 13;6:e4367. doi: 10.7717/peerj.4367. eCollection 2018.
Digital photographs taken under controlled conditions were used to examine the incidence of linear enamel hypoplasia defects (LEHs) in burials from the Buckeye Knoll archaeological site (41VT98 Victoria county, Texas), which spans the Early to Late Archaic Period (ca. 2,500-6,500 BP uncorrected radiocarbon). The majority (68 of 74 burials) date to the Texas Early Archaic, including one extremely early burial dated to 8,500 BP. The photogrammetric data collection method also results in an archive for Buckeye Knoll, a significant rare Archaic period collection that has been repatriated and reinterred. We analyzed the incidence and developmental timing of LEHs in permanent canines. Fifty-nine percent of permanent canines ( = 54) had at least one defect. There were no significant differences in LEH frequency between the maxillary and mandibular canines ( = 640.5, 1 = 37, 2 = 43, = .110). The sample studied ( = 92 permanent canines) had an overall mean of 0.93 LEH defect per tooth, with a median of one defect, and a mode of zero defects. Average age at first insult was 3.92 (median = 4.00, range = 2.5-5.4) and the mean age of all insults per individual was 4.18 years old (range = 2.5-5.67). Age at first insult is consistent with onset of weaning stress-the weaning age range for hunter-gatherer societies is 1-4.5. Having an earlier age of first insult was associated with having more LEHs ( = 54, rho = -0.381, = 0.005).
在可控条件下拍摄的数码照片，用于研究七叶树丘考古遗址（位于得克萨斯州维多利亚县41VT98）墓葬中线性釉质发育不全缺陷（LEHs）的发生率，该遗址跨越了古代早期到晚期（约公元前2500 - 6500年，未经校正的放射性碳年代）。大多数墓葬（74座中的68座）可追溯到得克萨斯州古代早期，其中包括一座可追溯到公元前8500年的极其早期的墓葬。摄影测量数据收集方法还为七叶树丘建立了一个档案库，这是一个重要的、稀有的古代时期藏品，已被归还并重新安葬。我们分析了恒牙犬齿中LEHs的发生率和发育时间。59%的恒牙犬齿（n = 54）至少有一处缺陷。上颌和下颌犬齿的LEH频率没有显著差异（χ² = 640.5，df = 37，df = 43，p = 0.110）。所研究的样本（n = 92颗恒牙犬齿）每颗牙齿的LEH缺陷总体平均为0.93处，中位数为1处缺陷，众数为0处缺陷。首次受影响的平均年龄为3.92岁（中位数 = 4.00，范围 = 2.5 - 5.4），个体所有受影响的平均年龄为4.18岁（范围 = 2.5 - 5.67）。首次受影响的年龄与断奶压力的开始时间一致——狩猎采集社会的断奶年龄范围是1 - 4.5岁。首次受影响的年龄越早，LEHs就越多（n = 54，rho = -0.381，p = 0.005）。
