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Sex differences in adult lifespan and aging rates of mortality across wild mammals

2020; National Academy of Sciences; Volume: 117; Issue: 15 Linguagem: Inglês

10.1073/pnas.1911999117

1091-6490

Jean‐François Lemaître, Victor Ronget, Morgane Tidière, Dominique Allainé, Vérane Berger, Aurélie Cohas, Fernando Colchero, Dalia A. Conde, Michael Garratt, András Liker, Gabriel Marais, Alexander Scheuerlein, Tamás Székely, Jean‐Michel Gaillard,

Neuroendocrine regulation and behavior

Significance In human populations, women live longer than men. While it is commonly assumed that this pattern of long-lived females vs. short-lived males constitutes the rule in mammals, the magnitude of the sex differences in lifespan and increase of mortality rate with advancing age remain to be quantified. Here, we demonstrate that, in the wild, mammalian females live longer than males but we did not detect any sex differences in aging rates. Contrary to a widespread hypothesis, we reveal that sex differences in life history strategies do not detectably influence the magnitude of sex differences in either lifespan or aging rates. Instead, our findings suggest these differences are predominantly shaped by complex interactions between local environmental conditions and sex-specific reproductive costs.