Understanding how and why menopause has evolved is a long-standing challenge across
disciplines. Females can typically maximize their reproductive success by reproducing for …

Parents often sacrifice their own future reproductive success to boost the survival of their
offspring, a phenomenon referred to as parental investment. In several social mammals …

Age-related changes in the patterns of local relatedness (kinship dynamics) can be a
significant selective force sha** the evolution of life history and social behaviour. In …

Bigg's (Transient) killer whales (Orcinus orca) display incredible cooperative hunting
techniques and a complex social organization. We describe the predation behavior of Bigg's …

Understanding the evolution of menopause presents a long-standing scientific challenge 1,
2, 3—why should females cease ovulation prior to the end of their natural lifespan? In …

Flourishing recent comparative studies on senescence have revealed an uncovered
diversity across the tree of life of the shapes of the age trajectories of mortality (actuarial …

We present the current available knowledge about sexual behavior and mating systems in
the killer whale, Orcinus orca, focusing primarily on the most well-studied ecotype, the …

Wolves of the Sea is a commonly used moniker for mammal-hunting killer whales, but they
are more than that with unique and blended characteristics of mammalian social carnivores …

Reproductive senescence is widespread across mammals, but only a small number of
species have physiological reproductive cessation and an extended post-reproductive …

Life-history theory suggests that individuals should reproduce until death, yet females of a
small number of mammals live for a significant period after ceasing reproduction, a …