Existing data on bonobo and chimpanzee dental eruption timing are derived predominantly from captive individuals or deceased wild individuals. However, recent advances in noninvasive photographic monitoring of living, wild apes have greatly expanded our knowledge of chimpanzee dental eruption in relatively healthy individuals under naturalistic conditions. We employ similar methods to expand on this knowledge by reporting deciduous dental eruption ages in living, wild bonobos and chimpanzees from LuiKotale, Democratic Republic of the Congo and Gombe National Park, Tanzania, respectively. Deciduous dental eruption ages in our sample generally fall within the range of variation previously documented for captive chimpanzees. We also found substantial variation in deciduous canine eruption timing, particularly among bonobos. One bonobo had a deciduous canine present by 227 days old while another did not have a deciduous canine present at 477 days old. As more data accumulate from these populations, future studies should consider sources of variation in deciduous canine eruption timing and relationships with other aspects of life history.

中文翻译：

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LuiKotale no黑猩猩和Gombe黑猩猩体内的乳牙萌发

有关bo黑猩猩和黑猩猩牙齿萌发时间的现有数据主要来自圈养个体或已死亡的野生个体。但是，无生命野生猿摄影监视的最新进展极大地扩展了我们在自然条件下相对健康的个体对黑猩猩牙齿萌出的认识。我们通过报告分别来自刚果民主共和国LuiKotale和坦桑尼亚贡贝国家公园的活体，野生bo黑猩猩和黑猩猩的乳牙蛀牙年龄，采用了类似的方法来扩展这一知识。我们的样本中的乳牙萌发年龄通常落在先前为圈养黑猩猩记录的变异范围内。我们还发现落叶犬的喷发时间有很大差异，尤其是bo黑猩猩。一个bo黑猩猩有227天大的落叶犬，而另一个another黑猩猩却有477天大的落叶犬。随着从这些人群中积累的更多数据，未来的研究应考虑落叶犬萌发时间的变化来源以及与生活史其他方面的关系。