Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland
How to optimally allocate time, energy and investment in an effort to maximize one's reproductive success is a fundamental problem faced by all organisms. This effort is complicated when the production of each additional offspring dilutes the total resources available for parental investment. A...
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ftdryad:oai:v1.datadryad.org:10255/dryad.108708 2023-05-15T16:50:21+02:00 Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland Lynch, Robert Francis 2016-04-25T14:51:35Z http://hdl.handle.net/10255/dryad.108708 https://doi.org/10.5061/dryad.q3nn7 unknown doi:10.5061/dryad.q3nn7/1 doi:10.1098/rsos.160087 PMID:27293787 doi:10.5061/dryad.q3nn7 Lynch RF (2016) Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland. Royal Society Open Science 3(5): 160087. http://hdl.handle.net/10255/dryad.108708 quantity-quality tradeoff Lifetime reproductive success Parental investment life history traits heritability Article 2016 ftdryad https://doi.org/10.5061/dryad.q3nn7 https://doi.org/10.5061/dryad.q3nn7/1 https://doi.org/10.1098/rsos.160087 2020-01-01T15:30:56Z How to optimally allocate time, energy and investment in an effort to maximize one's reproductive success is a fundamental problem faced by all organisms. This effort is complicated when the production of each additional offspring dilutes the total resources available for parental investment. Although a quantity–quality trade-off between producing and investing in offspring has long been assumed in evolutionary biology, testing it directly in humans is difficult, partly owing to the long generation time of our species. Using data from an Icelandic genealogy (Íslendingabók) over two centuries, I address this issue and analyse the quantity–quality trade-off in humans. I demonstrate that the primary impact of parents on the fitness of their children is the result of resources and or investment, but not genes. This effect changes significantly across time, in response to environmental conditions. Overall, increasing reproduction has negative fitness consequences on offspring, such that each additional sibling reduces an individual's average lifespan and lifetime reproductive success. This analysis provides insights into the evolutionary conflict between producing and investing in children while also shedding light on some of the causes of the demographic transition. Article in Journal/Newspaper Iceland Dryad Digital Repository (Duke University) |
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Dryad Digital Repository (Duke University) |
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quantity-quality tradeoff Lifetime reproductive success Parental investment life history traits heritability |
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quantity-quality tradeoff Lifetime reproductive success Parental investment life history traits heritability Lynch, Robert Francis Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
topic_facet |
quantity-quality tradeoff Lifetime reproductive success Parental investment life history traits heritability |
description |
How to optimally allocate time, energy and investment in an effort to maximize one's reproductive success is a fundamental problem faced by all organisms. This effort is complicated when the production of each additional offspring dilutes the total resources available for parental investment. Although a quantity–quality trade-off between producing and investing in offspring has long been assumed in evolutionary biology, testing it directly in humans is difficult, partly owing to the long generation time of our species. Using data from an Icelandic genealogy (Íslendingabók) over two centuries, I address this issue and analyse the quantity–quality trade-off in humans. I demonstrate that the primary impact of parents on the fitness of their children is the result of resources and or investment, but not genes. This effect changes significantly across time, in response to environmental conditions. Overall, increasing reproduction has negative fitness consequences on offspring, such that each additional sibling reduces an individual's average lifespan and lifetime reproductive success. This analysis provides insights into the evolutionary conflict between producing and investing in children while also shedding light on some of the causes of the demographic transition. |
format |
Article in Journal/Newspaper |
author |
Lynch, Robert Francis |
author_facet |
Lynch, Robert Francis |
author_sort |
Lynch, Robert Francis |
title |
Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
title_short |
Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
title_full |
Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
title_fullStr |
Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
title_full_unstemmed |
Data from: Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland |
title_sort |
data from: parents face quantity-quality tradeoffs between reproduction and investment in offspring in iceland |
publishDate |
2016 |
url |
http://hdl.handle.net/10255/dryad.108708 https://doi.org/10.5061/dryad.q3nn7 |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
doi:10.5061/dryad.q3nn7/1 doi:10.1098/rsos.160087 PMID:27293787 doi:10.5061/dryad.q3nn7 Lynch RF (2016) Parents face quantity-quality tradeoffs between reproduction and investment in offspring in Iceland. Royal Society Open Science 3(5): 160087. http://hdl.handle.net/10255/dryad.108708 |
op_doi |
https://doi.org/10.5061/dryad.q3nn7 https://doi.org/10.5061/dryad.q3nn7/1 https://doi.org/10.1098/rsos.160087 |
_version_ |
1766040514162851840 |