Socio-ecological models aim to predict the variation in social systems based on a limited
number of ecological parameters. Since the 1960s, the original model has taken two paths …

Abstract “Monogamy” and pair bonding have long been of interest to anthropologists and
primatologists. Their study contributes to our knowledge of human evolutionary biology and …

Monogamy as a social system has been both a scientific puzzle and a sociocultural issue for
decades. In this review, we examine social monogamy from a comparative perspective with …

Individuals living in groups have to achieve collective action for successful territorial
defense. Because conflicts between neighboring groups always involve risks and costs …

Intergroup interactions in social animals can vary from hostile to affiliative and may be
influenced by factors such as competitive ability, resource values and existing intergroup …

When resources are limited and defensible, inter-group encounters in animals are often of
aggressive nature. Individuals can participate in inter-group encounters to defend mates …

Group‐living folivorous primates can experience competition for food, and feeding
competition has also been documented for solitarily foraging gummivorous and omnivorous …

Loud calls play an important function in regulating the use of space and structuring social
groups and mating systems in a wide range of taxa. In pair‐living territorial animals, where …

Loud calls (ie, long‐range acoustic signals) regulate resource competition among
neighboring groups of conspecifics in several nonhuman primate species. Ultimate …

Intraspecific variability in social systems is gaining increased recognition in primatology.
Many primate species display variability in pair‐living social organizations through …