Polygyny without wealth: popularity in gift games predicts polygyny in BaYaka Pygmies.
Polygyny without wealth: popularity in gift games predicts polygyny in BaYaka Pygmies.
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DOI：
10.1098/rsos.150054
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发表时间：
2015-05
影响因子：
3.5
通讯作者：
Migliano AB
中科院分区：
文献类型：
--
作者：
Chaudhary N;Salali GD;Thompson J;Dyble M;Page A;Smith D;Mace R;Migliano AB
在不积累财富的狩猎采集社会中，一夫多妻婚姻的发生在很大程度上仍未得到探索，因为资源的可用性取决于男性的狩猎能力，并受到缺乏存储的限制。狩猎采集社会为人类进化提供了最深刻的见解，因为它们代表了我们物种进化历史的大部分。为了阐明狩猎采集者一夫多妻制的演变，我们研究了巴亚卡俾格米人的婚姻模式。我们调查了（i）巴亚卡狩猎采集者的一夫多妻率； (ii) 一夫多妻制是否给巴亚卡男性带来健康益处； (iii) 在不存在财富不平等的情况下，巴亚卡人中一夫多妻制的其他解释是什么？为了理解后者，我们探讨了表型品质（身高和力量）和社会资本（礼物游戏的受欢迎程度）的差异。我们发现一夫多妻制的男性具有更高的生殖适应性。社会资本和受欢迎程度，而不是表型质量，可能是一些男性狩猎采集者在农业和财富积累出现之前维持一夫多妻制婚姻的重要机制。
The occurrence of polygynous marriage in hunter–gatherer societies, which do not accumulate wealth, remains largely unexplored since resource availability is dependent on male hunting capacity and limited by the lack of storage. Hunter–gatherer societies offer the greatest insight in to human evolution since they represent the majority of our species' evolutionary history. In order to elucidate the evolution of hunter–gatherer polygyny, we study marriage patterns of BaYaka Pygmies. We investigate (i) rates of polygyny among BaYaka hunter–gatherers; (ii) whether polygyny confers a fitness benefit to BaYaka men; (iii) in the absence of wealth inequalities, what are the alternative explanations for polygyny among the BaYaka. To understand the latter, we explore differences in phenotypic quality (height and strength), and social capital (popularity in gift games). We find polygynous men have increased reproductive fitness; and that social capital and popularity but not phenotypic quality might have been important mechanisms by which some male hunter–gatherers sustained polygynous marriages before the onset of agriculture and wealth accumulation.