Evolutionary dynamics of culturally transmitted, fertility-reducing traits
Evolutionary dynamics of culturally transmitted, fertility-reducing traits
复制标题
文化传播、生育力降低特征的进化动态
DOI:
10.1101/619882
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发表时间:
2020
影响因子:
--
通讯作者:
Komarova, Natalia L
中科院分区:
文献类型:
--
作者:
Wodarz, Dominik;Stipp, Shaun;Hirshleifer, David;Komarova, Natalia L
Human populations in many countries have undergone a phase of demographic transition, characterized by a major reduction in fertility at a time of increased resource availability. A key stylized fact is that the reduction in fertility is preceded by a reduction in mortality and a consequent increase in population density. Various theories have been proposed to account for the demographic transition process, including maladaptation, increased parental investment in fewer offspring, and cultural evolution. None of these approaches, including formal cultural evolutionary models of the demographic transitions, have addressed a possible direct causal relationship between a reduction in mortality and the subsequent decline in fertility. We provide mathematical models in whichlow mortalityfavours the cultural selection of low-fertility traits. This occurs because reduced mortality slows turnover in the model, which allows the cultural transmission advantage of low-fertility traits to outrace their reproductive disadvantage. For mortality to be a crucial determinant of outcome, a cultural transmission bias is required where slow reproducers exert higher social influence. Computer simulations of our models that allow for exogenous variation in the death rate can reproduce the central features of the demographic transition process, including substantial reductions in fertility within only one to three generations. A model assuming continuous evolution of reproduction rates through imitation errors predicts fertility to fall below replacement levels if death rates are sufficiently low. This can potentially explain the very low preferred family sizes in Western Europe.
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DOI:
--
发表时间:
2004
期刊:
影响因子:
--
作者:
Nadia Kesteman
通讯作者:
Nadia Kesteman
DOI:
--
发表时间:
1957
期刊:
影响因子:
--
作者:
杉浦 榮三
通讯作者:
杉浦 榮三
DOI:
10.1098/rspb.2012.1751
发表时间:
2012-12-22
影响因子:
4.7
作者:
Kim, Peter S.;Coxworth, James E.;Hawkes, Kristen
通讯作者:
Hawkes, Kristen
影响因子:
1.4
作者:
FELDMAN, MW;CAVALLISFORZA, LL
通讯作者:
CAVALLISFORZA, LL
DOI:
--
发表时间:
1981
期刊:
影响因子:
--
作者:
L. Cavalli;M. Feldman
通讯作者:
M. Feldman