Behavioral ecologists have devoted considerable effort to identifying the sources of variation
in individual reproductive success. Much of this work has focused on the characteristics of …

While direct influences of the environment on population growth and resilience are well
studied, indirect routes linking environmental changes to population consequences are less …

Social environments have an important effect on a range of ecological processes, and form
a crucial component of selection. However, little is known of the link between personality …

Within-group variation in sociality has been linked to correlates of fitness across vertebrates.
Individuals that form strong social bonds with a few partners, or are well integrated into a …

Understanding determinants of differential reproductive success is at the core of
evolutionary biology because of its connection to fitness. Early work has linked variation in …

Abstract In Shark Bay, Western Australia, male bottlenose dolphins form a complex nested
alliance hierarchy. At the first level, pairs or trios of unrelated males cooperate to herd …

Almost all animal social groups show some form of fission–fusion dynamics, whereby group
membership is not spatio‐temporally stable. These dynamics have major implications at …

People who are more socially integrated or have higher socio-economic status live longer.
Recent studies in non-human primates show striking convergences with this human pattern …

Age-related social selectivity is a process in which older humans reduce their number of
social partners to a subset of positive and emotionally fulfilling relationships. Although …

Many studies highlight the correlation between social ties and fitness, yet often cannot
reveal how ties influence fitness. This review is aimed to facilitate the formulation and testing …