Adult sex ratio (ASR) exhibits immense variation in nature, although neither the causes nor
the implications of this variation are fully understood. According to theory, the ASR is …

Parents that kill and consume their offspring often appear to be acting against their own
reproductive interests. Yet parent–offspring cannibalism is common and taxonomically …

Parental care increases the fitness of offspring at a cost to the parents in terms of residual
reproductive success. This trade‐off may be affected by ecology, life history and the social …

In species that provide parental care, parents will sometimes cannibalize their own young
(ie, filial cannibalism). Here, we quantified the frequency of whole-clutch filial cannibalism in …

Frogs and toads (Anura) exhibit some of the most diverse parental strategies in vertebrates.
Identifying the evolutionary origins of parenting is fundamental to understanding the …

Sex roles describe sex differences in courtship, mate competition, social pair‐bonds and
parental care. A key challenge is to identify associations among the components and the …

Males and females often exhibit different behaviours during mate acquisition, pair‐bonding
and parenting, and a convenient label to characterize these behaviours is sex role. The …

Many animals provide parental care to offspring. Parental sex‐roles vary extensively across
taxa, and such patterns are considered well documented. However, information on …

The evolution of parental care is beneficial if it facilitates offspring performance traits that are
ultimately tied to offspring fitness. While this may seem self‐evident, the benefits of parental …

Parental care is one of the most variable social behaviors and it is an excellent model
system to understand cooperation between unrelated individuals. Three major hypotheses …