A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Human longevity and early reproduction in pre-industrial Sami populations
Tekijät: Helle S, Kaar P, Jokela J
Kustantaja: BLACKWELL PUBLISHING LTD
Julkaisuvuosi: 2002
Lehti:: Journal of Evolutionary Biology
Tietokannassa oleva lehden nimi: JOURNAL OF EVOLUTIONARY BIOLOGY
Lehden akronyymi: J EVOLUTION BIOL
Vuosikerta: 15
Numero: 5
Aloitussivu: 803
Lopetussivu: 807
Sivujen määrä: 5
ISSN: 1010-061X
DOI: https://doi.org/10.1046/j.1420-9101.2002.00447.x
Tiivistelmä
Senescence is predicted to be associated with the intensity and timing of reproduction at an earlier age. Here, we examine the phenotypic association between reproduction and post-reproductive survival in three pre-industrial human populations that lived in Northern Scandinavia during 1640-1870. In both sexes longevity was independent of the total number of born or adult children, whereas early reproduction was negatively associated with the longevity of females and males. Our results thus do not support the view that reproductive investment as such has a negative impact on longevity, but suggest that survival costs are associated with the scheduling of reproduction. We discuss, however, an alternative point of view suggesting that less intense selection for early reproduction, extended parental care, and social structure allowing kin selection through the effects of close relatives are factors that have selected for the long post-reproductive life span in humans.
Senescence is predicted to be associated with the intensity and timing of reproduction at an earlier age. Here, we examine the phenotypic association between reproduction and post-reproductive survival in three pre-industrial human populations that lived in Northern Scandinavia during 1640-1870. In both sexes longevity was independent of the total number of born or adult children, whereas early reproduction was negatively associated with the longevity of females and males. Our results thus do not support the view that reproductive investment as such has a negative impact on longevity, but suggest that survival costs are associated with the scheduling of reproduction. We discuss, however, an alternative point of view suggesting that less intense selection for early reproduction, extended parental care, and social structure allowing kin selection through the effects of close relatives are factors that have selected for the long post-reproductive life span in humans.
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