Developmental plasticity of human reproductive development: Effects of early family environment in modern-day France
Developmental plasticity of human reproductive development: Effects of early family environment in modern-day France
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DOI：
10.1016/j.physbeh.2008.09.005
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发表时间：
2008-12-15
影响因子：
2.9
通讯作者：
Raymond, Michel
中科院分区：
文献类型：
--
作者：
Alvergne, Alexandra;Faurie, Charlotte;Raymond, Michel
在第一项研究中，我们调查了法国大学男女学生的大样本组中，在儿童早期没有父亲和继父的存在如何影响与生殖发育有关的生理和行为特征（如初潮年龄、首次性交年龄和性伴侣数量）。我们评估了哪些年龄对家庭组成的变化敏感，发现当父亲不在时，月经初潮发生得更早。特别是当孩子在0到5岁之间时。在青春期早期父亲的缺席与第一次性行为的年龄较小和性伴侣数量增加有关，对于男性和女性来说。在此期间，继父的存在进一步提前了第一次性交的年龄。我们还测量了男女的睾酮水平，并分析了它们与父母分居的关系，发现父母分居的年轻女性下午的睾酮水平显着更高。在第二项研究中，我们分析了法国工人的大样本中的直接健身措施（如子女和孙辈的数量），发现童年时期父母分居与健身变化无关。我们讨论是否有经验的修改在早期的家庭环境中的个人的生殖结果的表达成本或适应性策略。(C)2008年爱思唯尔公司All rights reserved.
in a first study, we investigated how the absence of a father and the presence of a stepfather during early childhood affected physiological and behavioral traits related to reproductive development (such as age of menarche, age of first sexual intercourse and number of sexual partners) in a large sample set of male and female French university students. We evaluated which ages were sensitive to modifications in the family composition and found that menarche occurred earlier when the father was absent. particularly when the child was between 0 and 5 years of age. Father absence during early adolescence was associated with a younger age at first sexual intercourse and an increased number of sexual partners, for both sexes. The presence of a stepfather during this period further advanced the age of first sexual intercourse. We also measured testosterone levels in both sexes and analyzed their association with parental separation, and found that young women with separated parents had significantly higher afternoon levels of testosterone. In a second study, we analyzed direct fitness measures (such as number of children and grandchildren) in a large sample of French workers and found that parental separation during childhood was not associated with fitness variation. We discuss whether the reproductive outcomes of individuals having experienced modifications in the early family environment are the expression of costs or adaptive strategies. (C) 2008 Elsevier Inc. All rights reserved.