Gahtlan explicit and succinct statement of the supposed function of these two mechanisms
was that of Zuckerman [1932]:«The main factor that determines social groupings in sub …

The aim of this review is to present a coherent explanation of the ultimate causation and the
evolution of primary social systems. The explanation is based on the assumption that social …

Social groups are maintained by communication between individuals, which is brought
about by a series of largely innately determined gestures and responses. The way in which …

This paper discusses the bearing of variations in certain aspects of social structure on the
survival and reproductive success of individuals. Possible factors limiting the female's size …

The concept of dominance and dominance hierarchies has aroused much debate over the
last 15 years. Since its adoption by the early primatologists-notably Zuckerman (1932)-from …

In order to explain the variation in primate social systems, socio-ecology has focussed on
the role of ecological factors to explain female associations and relationships and on the …

One of the most obvious changes that has occurred in behavioural biology in recent years is
that it has become conspicuously a problem orientated subject. Moreover, one of the most …

Of all vertebrates, primates are among the most amenable to study in the wild. They are
mostly large diurnal creatures that can readily be habituated to close observation, often to …

This chapter examines attempts to integrate several of the preceding hypotheses into a more
general theory of social structure. It presents a few hypotheses relating to other aspects of …

Previous analyses of the evolution of primate groups have typically examined the problem in
a different way, focussing on both sexes together rather than on females. The classical …