Serial Cognition and Personality in Macaques

We examined the associations between serial cognition and personality in rhesus macaques (Macaca mulatta). Nine macaques were tested on a simultaneous chaining task to assess their cognitive abilities. They were also rated for personality traits and scored according to a previously extracted six component structure derived from free-ranging rhesus macaques. Friendliness and Openness were positively […]

Complexities of Using Wild versus Captive Activity Budget Comparisons for Assessing Captive Primate Welfare

Activity budget comparisons between groups or individuals in the wild and those in captivity are commonly used to determine the range of wild-type behaviors that nonhuman animals in captivity perform. These comparisons are conducted with the view that individuals displaying a greater range of wild-type behaviors have enhanced welfare. Such comparisons have a greater appeal […]

Oxytocin modulates mate-guarding behavior in marmoset monkeys

In socially-monogamous species, intolerance of interactions between a pairmate and a sexual rival (i.e., mate-guarding) promotes the preservation of long-lasting partnerships. One promising neurobiological candidate for the regulation of mate-guarding behavior in monogamous primates is the oxytocin (OT) system, given its established role in both the development of monogamous bonds and the behavioral processes that […]

Implementing portable touchscreen-setups to enhance cognitive research and enrich zoo-housed animals

To understand the evolutionary development of cognition, comparing the cognitive capacities of different animal species is essential. However, getting access to various species with sufficient sample sizes can be very challenging. Zoos, housing large ranges of animal taxa, would offer ideal research environments, but zoo-based studies on cognition are still rare. The use of touchscreen-computers […]

Menopause: A Comparative Life History Perspective

As a life history characteristic of human females, menopause is universal, it occurs halfway through the maximum lifespan of the species, and it consistently occurs at approximately age 50 in different populations. Menopause is fundamentally distinct from the reproductive senescence that has been described for a very small number of very old individual alloprimates. Menopause […]

Macaques: enrichment for nonhuman primates

This book serves as an introduction to the basic behavior and environmental enrichment of several species of nonhuman primates that are more commonly used in education, research and entertainment. In many ways, this book is meant to be a “how to” manual; it is not intended to be a broad scientific review of the primate […]

Life-long well being: Applying animal welfare science to nonhuman primates in sanctuaries

Nonhuman primates have become common in sanctuaries, and a few such facilities even specialize in their care. Sanctuaries can improve the well being of many unwanted primates, especially in terms of housing and socialization. However, diverse facilities call themselves sanctuaries, and they have varying conditions, care programs, and restrictions. In addition, a general lack of […]

Cage Use and Feeding Height Preferences of Captive Common Marmosets (Callithrix j. jacchus) in Two-Tier Cages

Determining appropriate feeding regimes has important welfare implications for cap-tive primates. This study examined the preference of food bowl heights in 6 pairs of common marmosets (Callithrix jacchus) housed in a 2-tier cage system. Given that marmosets are arboreal and spend most of their time in the upper half of their cages, we predicted that […]

Social organization as an expression of role behavior among Old World monkeys

Except for a few hours after birth, maternal status or maternal role behavior does not reduce the frequency of agonistic behaviors toward a subordinate mother. Although each species social adaptations can be understood only within the framework of its lifeway and ecology, there are phylogenetic adaptations which structure both signal systems and role behaviors. The […]

Unique Behavior of the Mona Monkey (Cercopithecus mona): All-Male Groups and Copulation Calls

Central to understanding any species or group of species is the manner in which they reproduce‚ and by extension‚ the manner and frequencies with which males and females interact with one another and with members of their own sex. Group formation and interactions among group members provide insight into individual reproductive strategies. Unique social groupings […]