The endocrinology of male rhesus macaque social and reproductive status: a test of the challenge and social stress hypotheses.
The endocrinology of male rhesus macaque social and reproductive status: a test of the challenge and social stress hypotheses.
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DOI：
10.1007/s00265-012-1420-6
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发表时间：
2013-01-01
影响因子：
2.3
通讯作者：
Maestripieri D
中科院分区：
文献类型：
--
作者：
Higham JP;Heistermann M;Maestripieri D
社会地位主要决定了雄性哺乳动物的繁殖成功，关于支配地位的内分泌学的假设刺激了对其成本和收益的前所未有的调查。在挑战假说下，男性睾酮水平根据竞争需要而上升，而社会压力假说预测糖皮质激素（GC）在社会动荡期间在高级个体中上升。在群体生活的灵长类动物，主要是狒狒，社会不稳定的时期，这两个假设提供了证据，但在季节性繁殖的物种，具有显着的社会专制，但较低的生殖偏斜的社会不稳定的数据是缺乏的。我们测试这些假设在季节性繁殖的恒河猴在圣地亚哥，波多黎各。我们记录了男性粪便GC和雄激素水平在10个月内的排名，年龄，纳塔尔状况和组任期长度，包括在社会不稳定时期，联盟的低排名男性攻击高排名的男性。雄激素，但不是GC水平上升，在交配季节，老年男性出生季节水平较低，但经历了更大的跨季节上升比年轻男性。两种内分泌测量都与等级无关，除非在社会不稳定的情况下，等级较高的个体两者的水平都较高且变化更大。高等级男性靶点在靶向时具有所有男性中最高的GC水平，并且在整个不稳定期内也具有高且可变的GC和雄激素水平。我们的研究结果为挑战和社会压力假设提供了证据。
Social status primarily determines male mammalian reproductive success, and hypotheses on the endocrinology of dominance have stimulated unprecedented investigation of its costs and benefits. Under the challenge hypothesis, male testosterone levels rise according to competitive need, while the social stress hypothesis predicts glucocorticoid (GC) rises in high ranking individuals during social unrest. Periods of social instability in group-living primates, primarily in baboons, provide evidence for both hypotheses, but data on social instability in seasonally-breeding species with marked social despotism but lower reproductive skew are lacking. We tested these hypotheses in seasonally-breeding rhesus macaques on Cayo Santiago, Puerto Rico. We documented male fecal GC and androgen levels over a 10 month period in relation to rank, age, natal status and group tenure length, including during a socially unstable period in which coalitions of lower-ranked males attacked higher-ranked males. Androgen but not GC levels rose during the mating season; older males had lower birth season levels but underwent a greater inter-season rise than younger males. Neither endocrine measure was related to rank except during social instability, when higher ranked individuals had higher and more variable levels of both. High ranking male targets had the highest GC levels of all males when targeted, and also had high and variable GC and androgen levels across the instability period. Our results provide evidence for both the challenge and social stress hypotheses.
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影响因子：
2.9
作者：
BERCOVITCH, FB;CLARKE, AS
通讯作者：
CLARKE, AS
影响因子：
2.3
作者：
Engelhardt, A;Heistermann, M;Niemitz, C
通讯作者：
Niemitz, C
影响因子：
2.4
作者：
Charpentier, M;Peignot, P;Wickings, EJ
通讯作者：
Wickings, EJ
影响因子：
3.5
作者：
Beehner JC;Gesquiere L;Seyfarth RM;Cheney DL;Alberts SC;Altmann J
通讯作者：
Altmann J
影响因子：
2.5
作者：
Cheney, DL;Seyfarth, RM;Silk, JB
通讯作者：
Silk, JB