Reproductive trade-offs in extant hunter-gatherers suggest adaptive mechanism for the Neolithic expansion
Identifieur interne : 000026 ( Main/Exploration ); précédent : 000025; suivant : 000027Reproductive trade-offs in extant hunter-gatherers suggest adaptive mechanism for the Neolithic expansion
Auteurs : Abigail E. Page [Royaume-Uni] ; Sylvain Viguier [Royaume-Uni] ; Mark Dyble [Royaume-Uni] ; Daniel Smith [Royaume-Uni] ; Nikhil Chaudhary [Royaume-Uni] ; Gul Deniz Salali [Royaume-Uni] ; James Thompson [Royaume-Uni] ; Lucio Vinicius [Royaume-Uni] ; Ruth Mace [Royaume-Uni] ; Andrea Bamberg Migliano [Royaume-Uni]Source :
- Proceedings of the National Academy of Sciences of the United States of America [ 0027-8424 ] ; 2016.
Abstract
The rise of agriculture during the Neolithic period has paradoxically been associated with worldwide population growth despite increases in disease and mortality. We examine the effects of sedentarization and cultivation on disease load, mortality, and fertility among Agta foragers. We report increased disease and mortality rates associated with sedentarization alongside an even larger increase in fertility associated with both participation in cultivation and sedentarization. Thus, mothers who transition to agriculture have higher reproductive fitness. We provide the first empirical evidence, to our knowledge, of an adaptive mechanism behind the expansion of agriculture, explaining how we can reconcile the Neolithic increase in morbidity and mortality with the observed demographic expansion.
Url:
DOI: 10.1073/pnas.1524031113
PubMed: 27071109
PubMed Central: 4855554
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en"><title>Significance</title>
<p>The rise of agriculture during the Neolithic period has paradoxically been associated with worldwide population growth despite increases in disease and mortality. We examine the effects of sedentarization and cultivation on disease load, mortality, and fertility among Agta foragers. We report increased disease and mortality rates associated with sedentarization alongside an even larger increase in fertility associated with both participation in cultivation and sedentarization. Thus, mothers who transition to agriculture have higher reproductive fitness. We provide the first empirical evidence, to our knowledge, of an adaptive mechanism behind the expansion of agriculture, explaining how we can reconcile the Neolithic increase in morbidity and mortality with the observed demographic expansion.</p>
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