Variability in reproductive success viewed from a life-history perspective in Baboons

Article Abstract:

A summary of how foraging environment, social status, and group size contribute to within-population variance in reproductive success for savannah baboons is presented. The extent to which savannah baboons change their foraging environments by shifting home ranges and seeking rich food sources and how low-ranking females, which disproportionately bear the costs of social life, may mitigate those costs is discussed.

Environmental aspects, Natural history, Baboons, Animal reproduction

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Reproductive adaptations to a large-brained fetus open a vulnerability to anovulation similar to polycystic ovary syndrome

Article Abstract:

Successful female reproductive adaptations to accommodate the growth demands of large-brained primate fetuses that facilitate a particular vulnerability of higher primates to hypergonadotropic disruption of ovulatory function are proposed. These reproductive abnormalities are found in women who exhibit a prevalent human infertility syndrome, polycystic ovary syndrome (PCOS).

Primates, Stein-Leventhal syndrome, Polycystic ovary syndrome, Anovulation

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Kin influence on female reproductive behavior: the evidence from reconstitution of the Bejsce Parish registers, 18th to 20th centuries, Poland

Article Abstract:

A study was conducted to analyze the kin effects on fertility in order to check if help received from kinsmen enhances a recipients reproduction in terms of parity transition risk, completed fertility and the number of survivors. The results indicate that completed fertility and parity-specific transition risks are strongly influenced by various kin groups.

Human reproduction, Kin selection (Evolution), Kin selection (Natural selection)

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