Search for a resource-based trade-off between lifetime reproductive effort and women's post-reproductive survival in preindustrial Sweden

The Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
Samuli Helle

Abstract

A reduced survival as a potential cost of high lifetime reproductive effort in women has intrigued human evolutionary biologists for more than a century. However, we do not currently have compelling evidence for the delayed survival costs of reproduction. Reasons for this may include several methodological issues like environmental confounding, measurement of individuals' lifetime reproductive effort using demographic data, and the practice of mortality selection that are all likely to compromise our ability to reliably detect trade-offs at the phenotypic level. The current research aims to address all these issues by using structural equation modelling (SEM) to examine the potential trade-off between women's lifetime reproductive effort and their post-reproductive mortality in a large data set of 6,594 women from preindustrial northern Sweden that has not previously been used for this purpose. Despite this, the results showed only weak evidence for a trade-off between lifetime reproductive effort and post-reproductive mortality, one that was confined to only those women who had high lifetime reproductive effort and spend more than 20 years in widowhood. The socio-economic status of the family or mother's ethnic background did ...Continue Reading

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Citations

Aug 27, 2019·Ageing Research Reviews·Adiv A JohnsonBoris Shoshitaishvili

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