PHYSICAL MATURATION AND AGE ESTIMATES OF YELLOW BABOONS, PAPIO-CYNOCEPHALUS, IN AMBOSELI NATIONAL-PARK, KENYA
PHYSICAL MATURATION AND AGE ESTIMATES OF YELLOW BABOONS, PAPIO-CYNOCEPHALUS, IN AMBOSELI NATIONAL-PARK, KENYA
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DOI：
10.1002/ajp.1350010404
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发表时间：
1981-01-01
影响因子：
2.4
通讯作者：
HAUSFATER, G
中科院分区：
文献类型：
--
作者：
ALTMANN, J;ALTMANN, S;HAUSFATER, G
在对肯尼亚安博塞利国家公园的野生狒狒进行的纵向研究中，我们收集了身体发育和生殖成熟的数据。重申和扩展我们早期的结果，我们证明，在该领域的发展里程碑发生的年龄比相比，那些在广泛的供应或圈养约为5：3。一些发育里程碑的年龄范围非常狭窄和离散，而其他里程碑则存在相当大的个体间变异性和更渐进的变化。对于婴儿，只有胼胝体旁皮肤从粉红色到灰色的变化发生在很短的年龄跨度内。对于年龄较大的动物，容易识别出两个重要的发育事件，并且发生在相当窄的年龄范围内：雄性在5至6岁时睾丸迅速增大，雌性在4至5年半时开始初潮。在本报告中，我们考虑了加速或延迟成熟的一些后果。我们进一步探讨了对不同的研究问题采用不同年龄段标准的必要性。
In a longitudinal study of individually identified wild baboons in Amboseli National Park, Kenya, we collected data on physical development and reproductive maturation. Confirming and extending our earlier results, we demonstrated that the ratio of ages at which developmental milestones occur in the field as compared to those under extensive provisioning or in captivity were approximately 5:3. The age range for some developmental milestones was quite narrow and discrete, while for others there was considerable between‐individual variability and more gradual changes. For infants, only the change from pink to gray of the paracallosal skin occurred within a brief age span. For older animals two important developmental events are readily identified and occur within a fairly narrow age range: Rapid enlargement of testes at 5 to 6 years for males and onset of menarche at 4 to 5 ½ years for females. In the present report, we considered some consequences of accelerated or delayed maturation. We further explored the need to employ different age‐class criteria for different research problems.