Evolutionary stability and the rarity of grandmothering

@article{Field2017EvolutionarySA,
  title={Evolutionary stability and the rarity of grandmothering},
  author={Jared M Field and Michael B. Bonsall},
  journal={Ecology and Evolution},
  year={2017},
  volume={7},
  pages={3574 - 3578}
}
Abstract The provision of intergenerational care, via the Grandmother Hypothesis, has been implicated in the evolution of postfertile longevity, particularly in humans. However, if grandmothering does provide fitness benefits, a key question is why has it evolved so infrequently? We investigate this question with a combination of life‐history and evolutionary game theory. We derive simple eligibility and stability thresholds, both of which must be satisfied if intergenerational care is first to… 

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References

SHOWING 1-10 OF 36 REFERENCES
Grandmothering drives the evolution of longevity in a probabilistic model.
Evolution of longevity, age at last birth and sexual conflict with grandmothering.
Grandmothers and the evolution of human longevity
  • K. Hawkes
  • Biology
    American journal of human biology : the official journal of the Human Biology Council
  • 2003
TLDR
Using modern humans and chimpanzees to represent, respectively, genus Homo and australopithecines, two corollaries of the grandmother hypothesis are focused on: that ancestral age‐specific fertility declines persisted in the authors' genus, while 2) senescence in other aspects of physiological performance slowed down.
Grandmothering, menopause, and the evolution of human life histories.
TLDR
This hypothesis also accounts for the authors' late maturity, small size at weaning, and high fertility, and has implications for past human habitat choice and social organization and for ideas about the importance of extended learning and paternal provisioning in human evolution.
The evolution of prolonged life after reproduction.
Grandmotherhood : The evolutionary significance of the second half of female life
By the year 2030, the average life expectancy of women in industrialized countries could reach ninety-exceeding that of men by about ten years. At the present time, postmenopausal women represent
Antiquity of postreproductive life: Are there modern impacts on hunter‐gatherer postreproductive life spans?
TLDR
Effects of the modern world on hunter‐gatherer adult mortality, with special reference to the Hadza, suggests that such effects are not sufficient to deny the existence of substantial life expectancy at the end of the childbearing career.
Evolutionary ecology of human life history
TLDR
The evolution of menopause, the curtailing of female reproduction long before death, and parental investment in children in competition with each other may be key to understanding both of these unusual human phenomena.
Longevity Among Hunter‐ Gatherers: A Cross‐Cultural Examination
TLDR
This work argues for an adaptive life span of 68-78 years for modern "Homo sapiens" based on analysis of mortality profiles obtained from small-scale hunter-gatherer and horticultural populations from around the world, and integrates information on age-specific dependency and resource production to help explain the adaptive utility of longevity in humans from an evolutionary perspective.
Evolution and the Theory of Games
In the Hamadryas baboon, males are substantially larger than females. A troop of baboons is subdivided into a number of ‘one-male groups’, consisting of one adult male and one or more females with
...
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