Factors affecting reproduction and mortality among baboons in the Okavango Delta, Botswana
Factors affecting reproduction and mortality among baboons in the Okavango Delta, Botswana
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DOI：
10.1023/b:ijop.0000019159.75573.13
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发表时间：
2004-04-01
影响因子：
2.5
通讯作者：
Silk, JB
中科院分区：
文献类型：
--
作者：
Cheney, DL;Seyfarth, RM;Silk, JB
我们提出了一项为期10年的研究结果，自由放养的灰足查克马狒狒（Papio ursinus griseipes）在博茨瓦纳的奥卡万戈三角洲。成年雌性和青少年的大多数死亡是由于捕食，而婴儿更有可能死于捕食。出生率和死亡率有很强的季节性影响，大多数怀孕发生在降雨量最高的时期。死亡率最高，由于捕食和捕杀在3个月期间，洪水是在其高峰期，当该组是更加分散和约束移动沿着可预测routes.The生殖参数最有可能与上级竞争能力-出生间隔和婴儿的生长速度-赋予轻微的健身优势的高级女性。然而，它被杀蚁和捕食的影响所抵消。杀婴影响高，低级别的女性比中等级别的女性，而捕食影响女性的所有职级相对平等。因此，估计女性一生的生殖成功率几乎没有与等级相关的差异。
We present results of a 10-year study of free-ranging gray-footed chacma baboons ( Papio ursinus griseipes) in the Okavango Delta of Botswana. The majority of deaths among adult females and juveniles were due to predation, while infants were more likely to die of infanticide. There were strong seasonal effects on birth and mortality, with the majority of conceptions occurring during the period of highest rainfall. Mortality due to predation and infanticide was highest during the 3-mo period when flooding was at its peak, when the group was more scattered and constrained to move along predictable routes.The reproductive parameters most likely to be associated with superior competitive ability - interbirth interval and infant growth rates - conferred a slight fitness advantage on high-ranking females. However, it was counterbalanced by the effects of infanticide and predation. Infanticide affected high-and low-ranking females more than middle-ranking females, while predation affected females of all ranks relatively equally. As a result, there were few rank-related differences in estimated female lifetime reproductive success.