MIXED LONGITUDINAL-STUDY OF DENTAL EMERGENCE IN THE CHIMPANZEE, PAN-TROGLODYTES (PRIMATES, PONGIDAE)
MIXED LONGITUDINAL-STUDY OF DENTAL EMERGENCE IN THE CHIMPANZEE, PAN-TROGLODYTES (PRIMATES, PONGIDAE)
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DOI：
10.1002/ajpa.1330860212
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发表时间：
1991-10-01
影响因子：
2.8
通讯作者：
MAHONEY, CJ
中科院分区：
文献类型：
--
作者：
CONROY, GC;MAHONEY, CJ
在过去的10年里，对58只已知年龄和性别的黑猩猩(22只雄性，36只雌性)的混合纵向样本进行了牙齿出现年龄的检查。这项研究提供了目前可用的关于已知年龄和性别的黑猩猩牙齿出现的最完整的数据集。恒牙和乳牙的萌出年龄的汇总统计数据和累积频率百分位数都被提供。男性和女性的百分位数也进行了比较，揭示了一些出现年龄的性二型性。拔牙方式的比较表明，上牙和下牙之间有一些统计学上的显着差异，但上牙和下牙的反牙列之间没有统计学上的差异。Kendall的等级相关系数(Tau)表明，个体内第一磨牙和门牙出现的时间存在相关性。此外，在第一磨牙和中切牙的出现之间也观察到了显著的时差。文中还介绍了一些出现序列的多态现象。这些发现为未来黑猩猩的生长、发育和人口学研究提供了重要的基线信息，也有助于古人类学中与早期原始人牙齿成熟模式相关的几个当前问题。
Dental emergence ages are examined for a mixed longitudinal sample of 58 chimpanzees of known age and sex (22 males, 36 females) followed over the past 10 years. This study provides the most complete data set currently available on dental emergence in chimpanzees of known age and sex. Summary statistics and cumulative frequency percentiles of emergence ages are presented for both the permanent and the primary teeth. Male and female percentiles are also compared and reveal a number of cases of sexual dimorphism in emergence ages. Comparisons of emergence means reveal some statistically significant differences between upper and lower teeth but not between antimeres in the upper or lower dentition. Kendall's rank correlation coefficient (tau) suggests a correlation in timing between first molar and incisor emergence within individuals. In addition, a significant time lag was observed between first molar and central incisor emergence. A number of emergence sequence polymorphisms are presented as well. These findings provide important baseline information for future studies of chimpanzee growth, development, and demography and also contribute to several current issues in paleoanthropology relating to dental maturation patterns in early hominids.