Female testosterone, dominance rank, and aggression in an Ethiopian population of hybrid baboons
Female testosterone, dominance rank, and aggression in an Ethiopian population of hybrid baboons
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DOI：
10.1002/ajp.20172
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发表时间：
2005-09-01
影响因子：
2.4
通讯作者：
Whitten, PL
中科院分区：
文献类型：
--
作者：
Beehner, JC;Phillips-Conroy, JE;Whitten, PL
关于雌性睾酮（T）测量值与行为之间关系的研究，特别是在自由放养的灵长类动物种群中，仍然很少。在这项研究中，我们使用粪便类固醇分析，以研究季节，生殖和社会因素对女性T在一组自由放养的杂交狒狒（Papio sp.）在埃塞俄比亚的阿瓦什国家公园。我们收集了25名成年女性在11个月内的行为和激素数据。固相萃取和放射免疫测定（RIA）技术被用来定量T每周从每个女性收集的776个粪便样本。结果表明：（1）雌性个体在妊娠期和雨季的T值高于其他时期;（2）雌性个体的优势等级与T值呈正相关;（3）雌性个体的T值与攻击性在个体内呈正相关，但在个体间不呈正相关。妊娠期间较高的T浓度与其他已发表的灵长类动物妊娠概况一致。结合觅食的数据，雨季增加T可能表明女性的竞争。等级-T关系可能由替代者或攻击性介导。最后，我们讨论了基于学科内和跨学科分析的对牺牲-行为关系的不同解释。
Studies on the relationship between female testosterone (T) measures and behavior, particularly in free-ranging primate populations, remain scant. In this study we used fecal steroid analysis to examine the effects of seasonal, reproductive, and social factors on female T in a group of free-ranging hybrid baboons (Papio sp.) in the Awash National Park of Ethiopia. We collected behavioral and hormonal data from 25 adult females across an 11-month period. Solid phase extraction and radioimmunoassay (RIA) techniques were used to quantify T in 776 fecal samples collected weekly from each female. The results indicate that 1) the females had elevated T during pregnancy and during the wet season relative to other periods, 2) female dominance rank was positively related to T measures, and 3) female T and aggression were positively related within subjects but not across subjects. Higher T concentrations during pregnancy are consistent with other published profiles of pregnancy in primates. In combination with data on foraging, wet season increases in T may indicate contest competition for females. The rank-T relationship may be mediated by supplants or aggression. Finally, we discuss the different interpretations of the hormone-behavior relationship based on within- and across-subject analyses.