The oxidative cost of unstable social dominance
The oxidative cost of unstable social dominance
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DOI：
10.1242/jeb.104851
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发表时间：
2014-08-01
影响因子：
2.8
通讯作者：
Charpentier, Marie J. E.
中科院分区：
文献类型：
--
作者：
Beaulieu, Michael;Mboumba, Sylvere;Charpentier, Marie J. E.
在不稳定的社会条件下，较高的社会地位预计会产生健身成本。氧化平衡的破坏可能是这些影响的基础，但氧化应激的标记物如何与社会等级和稳定性相关尚不清楚。我们在山训中研究了交配季节是否会根据他们的社会地位不同而对他们的氧化平衡产生不同的影响。在交配季节之外，级别高的雄性表现出最低水平的氧化损伤，而在交配季节，他们是唯一经历氧化损伤增加的雄性。相比之下，交配季节增加了所有雌性的氧化应激，无论她们的社会地位如何。这些结果支持这样一种假设，即社会等级和社会稳定之间的耦合导致了氧化应激方面的不同成本，这可能解释了个体之间对社会引发的健康问题的敏感性差异。
High social rank is expected to incur fitness costs under unstable social conditions. A disruption of the oxidative balance may underlie such effects, but how markers of oxidative stress vary in relation to social rank and stability is unknown. We examined in mandrills whether the mating season characterized by social instability between males (but not between females) affected their oxidative balance differently according to their social rank. Outside the mating season, high-ranking males showed the lowest levels of oxidative damage, while during the mating season, they were the only males to experience increased oxidative damage. In contrast, the mating season increased oxidative stress in all females, irrespective of their social rank. These results support the hypothesis that the coupling between social rank and social stability is responsible for differential costs in terms of oxidative stress, which may explain inter-individual differences in susceptibility to socially induced health issues.