Cetaceans are fully aquatic predatory mammals that have successfully colonized virtually all
marine habitats. Their adaptation to these habitats, so radically different from those of their …

The theory of sexual selection is the most widely accepted theory explaining the evolution of
mating systems and secondary sexual characters. Polygyny is the most common mating …

Reproductive senescence is evident across many mammalian species. An emerging
perspective considers components of reproductive senescence as evolutionarily distinct …

Sexual segregation is widespread in mammals, although the proximate causes are poorly
understood in monomorphic species. Indo-Pacific bottlenose dolphins (Tursiops aduncus) …

Research on sex biases in longevity in mammals often assumes that male investment in
competition results in a female survival advantage that is constant throughout life. We use 35 …

Highlights•In bottlenose dolphins, homophily increased from the calf stage to the juvenile
stage.•Calves and juveniles showed high social activity.•Juveniles avoided adult …

Chimpanzees (Pan troglodytes) have a complex mating system in which both sexes use
multiple tactics. Most copulations occur in group contexts, and high‐ranking males can gain …

Evolution is rapidly gaining attention as an important driver of ecological process. Yet,
evolution via sexual selection has generally been omitted from this emerging synthesis. Our …

Obtaining morphometric data on free-ranging marine megafauna is difficult, as traditional
methods rely on post-mortem or live-capture techniques. We linked stereo-laser …

Animal sociality is of significant interest to evolutionary and behavioural ecologists, with
efforts focused on the patterns, causes and fitness outcomes of social preference. However …