SELECTION FOR INCREASED BROOD SIZE IN HISTORICAL HUMAN POPULATIONS

@inproceedings{Helle2004SELECTIONFI,
  title={SELECTION FOR INCREASED BROOD SIZE IN HISTORICAL HUMAN POPULATIONS},
  author={Samuli Helle and Virpi Lummaa and Jukka Jokela},
  booktitle={Evolution; international journal of organic evolution},
  year={2004}
}
Abstract Human twinning rates are considered to either reflect the direct fitness effects of twinning in variable environments, or to be a maladaptive by-product of selection for other maternal reproductive traits (e.g., polyovulation). We used historical data (1710–1890) of Sami populations from Northern Scandinavia to contrast these alternative hypotheses. We found that women who produced twins started their reproduction younger, ceased it later, had higher lifetime fecundity, raised more… 

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