Factors influencing weight changes in callitrichids at the Bronx zoo
Abstract Callitrichids are small monkeys with high metabolic rates who appear to be susceptible to spontaneous diseases and possibly to environmental changes creating challenges in maintaining them in captivity. This study investigates whether life events (i.e. medical, social and housing changes) can influence weight. In previous research, body mass has been shown to be correlated […]
Infant access and handling in sooty mangabeys and vervet monkeys
Access to one’s newborn infant is a commodity that can be traded for other benefits such as grooming in nonhuman primates. According to the biological market paradigm, the price paid should fluctuate with the number of newborns in the group. We investigated the grooming sessions between mothers with infants less than 3 months old and […]
Fitness Consequences of Maternal Rearing Strategies in Warthogs: Influence of Group Size and Composition
Cooperatively breeding species are defined by the presence of individuals who help in rearing the offspring of others. This seemingly altruistic behaviour has been difficult to define and the help provided has not always resulted in a reproductive advantage to the recipient. We examine maternal rearing strategies in the common warthog, Phacochoerus africanus, a facultative, […]