Biological and Physical Anthropology Commons^™

Juvenile Play Behavior In Cohabitating Captive Siamangs (Symphalangus Syndactylus) And Orangutans (Pongo Abelii), Jo Gansemer

Field Notes: A Journal of Collegiate Anthropology

This research looks at the social play habits of a juvenile orangutan and juvenile siamang housed together at the San Diego Zoo, hypothesizing that the juvenile apes would prefer heterospecific juveniles as play partners over conspecific adults in the absence of conspecific juveniles. Using the San Diego Ape Cam for ten hours of focal animal sampling, the activity budgets for the juveniles were assembled, with emphasis on the rates of social versus solo play. The study confirmed, in this specific context, that the apes preferred heterospecific juvenile play to conspecific play with adults.

Managing Sociality Of A Captive Female Bornean Orangutan From Breeding To Post-Partum At The Smithsonian's National Zoo, Marie Vergamini

Theses and Dissertations

The Association of Zoos and Aquariums’ Orangutan Species Survival Plan® aims to maintain 100 Bornean orangutans (Pongo pygmaeus) in captivity. Because investment in breeding these lineages is high, properly managing sociality of potential mothers is essential. This study assessed how behaviors of a captive breeding female at the Smithsonian’s National Zoo changed from pre-gestation through the offspring’s sixth month of age to improve breeding recommendations.

The infant Bornean orangutan was born September 2016. Results indicate that during breeding, the mother socialized most with two adult females. During pregnancy, the pregnant female socialized in less energy-consuming ways, i.e. grooming. …

Pantomime In Great Apes: Evidence And Implications, Ann E. Russon, Kristin Andrews

Kristin Andrews, PhD

We recently demonstrated, by mining observational data, that forest-living orangutans can communicate using gestures that qualify as Pantomime. Pantomimes, like other iconic gestures, physically resemble their referents. More elaborately, pantomimes involve enacting their referents. Holding thumb and finger together at the lips and blowing between them to mean balloon is one example. Here we sketch evidence of pantomime in other great apes, methodological concerns, and sophisticated cognitive capabilities that great ape pantomimes suggest.