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在雄性猿中,对交配竞争的荷尔蒙反应
Bernard Thierry1, Nancy Rebout2, Michael Heistermann3
1Laboratoire de Psychologie Sociale et Cognitive, CNRS, Université Clermont Auvergne, Clermont-Ferrand, France.
Hormones and behavior
|June 30, 2023
概括
像葡萄糖皮质激素和雄激素这样的激素与雄性交配的努力有关,而不是在Tonkean中的主导地位. 保护伴侣的行为,而不是社会地位,在繁殖过程中显著影响男性激素水平.
科学领域:
- 灵长类的生殖内分泌学
- 行为生态学 行为生态学
- 灵长类社会系统.
背景情况:
- 葡萄糖皮质激素和雄激素激素对于灵长类动物的男性生殖力度至关重要.
- 在交配竞争期间,荷尔蒙产量往往会增加,但很难从主导地位中解脱交配挑战的影响.
- 由于宽松的统治层次和全年繁殖,托尼提供了一个独特的模型,简化了交配竞争的动态.
研究的目的:
- 为了研究男性激素水平 (葡萄糖皮质激素和雄激素) 和生殖努力与子的支配地位之间的关系.
- 确定影响男性激素度的因素,包括交配竞争,群体规模和女性吸引力.
- 为了澄清葡萄皮质类药物和雄激素在这种物种社会系统中的雄性生殖策略中的特定作用.
主要方法:
- 在80个月内对两个被囚禁的猿群体进行了纵向研究.
- 记录女性生殖状态和男性/女性行为.
- 收集男性尿液样本以测量葡萄糖皮质醇和雄激素度.
主要成果:
- 在守护伴侣的行为期间,男性尿动雄激素水平显著增加.
- 没有发现男性主导地位对葡萄糖皮质激素水平有显著影响.
- 在伴侣守护期间,只观察到男性等级对雄激素的边际影响,这表明荷尔蒙与交配努力比等级更相关.
结论:
- 子中的葡萄皮质醇和雄激素更直接地参与男性交配的努力,而不是建立主导地位.
- 这些发现强调了特定物种的社会体系对这些激素在生殖竞争中的功能的影响.
- 荷尔蒙反应主要是由与确保交配机会相关的直接挑战和努力驱动的.
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