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Between-task consistency, temporal stability and the role of posture in simple reach and fishing hand preference in chimpanzees (Pan troglodytes)
Contributor(s):: Díaz, Sergio, Murray, Lindsay, Roberts, Sam G. B., Rodway, Paul
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Experimentally evaluating the function of self-directed behaviour in two adult mandrills (Mandrillus sphinx)
Contributor(s):: Leeds, A., Lukas, K. E.
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Refinements to captive chimpanzee (Pan troglodytes) care: a self-medication paradigm
Contributor(s):: Webb, S. J. N., Hau, J., Schapiro, S. J.
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Looking for Visitor's Effect in Sanctuaries: Implications of Guided Visitor Groups on the Behavior of the Chimpanzees at Fundació Mona
| Contributor(s):: Jana López-Álvarez, Yaiza Sanjorge, Sara Soloaga, Dietmar Crailsheim, Miquel Llorente
The question of ‘if and how captive primates are affected by visitors’ has gained increasing attention over the last decades. Although the majority reported undesirable effects on behavior and wellbeing, many studies reported contradicting results. Most of these studies were...
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Effects of Rearing on the Behaviour of Zoo-Housed Chimpanzees (Pan troglodytes)
| Contributor(s):: Spiezio, C., Vaglio, S., Vandelle, C., Sandri, C., Regaiolli, B.
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The ability to recognize dog emotions depends on the cultural milieu in which we grow up
| Contributor(s):: Amici, F., Waterman, J., Kellermann, C. M., Karimullah, K., Bräuer, J.
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Metagenomic analysis of dental calculus in ancient Egyptian baboons
| Contributor(s):: Ottoni, C., Guellil, M., Ozga, A. T., Stone, A. C., Kersten, O., Bramanti, B., Porcier, S., Van Neer, W.
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Utilitarianism for animals, Kantianism for people? Harming animals and humans for the greater good
| Contributor(s):: Caviola, Lucius, Kahane, Guy, Everett, Jim A. C., Teperman, Elliot, Savulescu, Julian, Faber, Nadira S.
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Human caregivers are integrated social partners for captive chimpanzees
| Contributor(s):: Funkhouser, J. A., Mayhew, J. A., Mulcahy, J. B., Sheeran, L. K.
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Chimpanzees use multiple strategies to limit aggression and stress during spatial density changes
| Contributor(s):: Duncan, Luke Mangaliso, Jones, Megan Anne, van Lierop, Mathew, Pillay, Neville
The regulation of aggression in captive animals is an important welfare concern. Captive environments typically provide limited space for animals and many species exhibit heightened aggression in response to spatial restriction. However, primates appear to regulate aggression under these...
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Behavioral correlates and welfare implications of informal interactions between caretakers and zoo-housed chimpanzees and gorillas
| Contributor(s):: Chelluri, Gita I., Ross, Stephen R., Wagner, Katherine E.
In captive animal facilities, human staff members are a relevant part of the animals’ social environment in addition to providing care and managing the social group. Structured, predictable interactions and relaxed, spontaneous contacts may all affect the animals’ behavior and well-being, both...
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Volunteer experience influences the conclusions of behavioural experiments
| Contributor(s):: Duncan, Luke Mangaliso, Pillay, Neville
Volunteers offer an inexpensive and rapid means of collecting behavioural data, but their reliability is often overlooked. Past research has suggested that observers that were inexperienced are equally adept at recording behaviour as experienced observers, and inexperience was regarded as being...
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Physiological and welfare consequences of transport, relocation, and acclimatization of chimpanzees (Pan troglodytes)
| Contributor(s):: Schapiro, Steven J., Lambeth, Susan P., Jacobsen, Kirsten Rosenmaj, Williams, Lawrence E., Nehete, Bharti N., Nehete, Pramod N.
Manipulations of the environments of captive nonhuman primates often have welfare consequences to the animals, including behavioral effects, and for certain manipulations, physiological effects as well. The processes of transporting, relocating, and acclimatizing nonhuman primates across...
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Chimpanzees with positive welfare are happier, extraverted, and emotionally stable
| Contributor(s):: Robinson, Lauren M., Altschul, Drew M., Wallace, Emma K., Úbeda, Yulán, Llorente, Miquel, Machanda, Zarin, Slocombe, Katie E., Leach, Matthew C., Waran, Natalie K., Weiss, Alexander
Facilities housing captive animals are full of staff who, every day, interact with the animals under their care. The expertise and familiarity of staff can be used to monitor animal welfare by means of questionnaires. It was the goal of our study to examine the association between chimpanzee (Pan...
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Adult-adult social play in captive chimpanzees: Is it indicative of positive animal welfare?
| Contributor(s):: Yamanashi, Yumi, Nogami, Etsuko, Teramoto, Migaku, Morimura, Naruki, Hirata, Satoshi
Play is sometimes considered as an indicator of positive animal welfare. However, it is not yet sufficiently understood whether or not social play among adults can be considered as such an indicator because it is rare in adult animals. This study investigates the factors that influence social...
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Captive Audiences: Interactions Between Visitors and Bonobos at the San Diego Zoo
| Contributor(s):: Elena Miyoko Carver
Primate exhibits in American zoological parks, especially those featuring the great apes, are among the most compelling, complex, and popular exhibits for visitors, and are a primary way the American public becomes familiar with our closest living relatives. In this study, I approach the...
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Dogs (Canis familiaris), but Not Chimpanzees (Pan troglodytes), Understand Imperative Pointing
| Contributor(s):: Katharina C. Kirchhofer, Felizitas Zimmermann, Juliane Kaminski, Michael Tomasello
Chimpanzees routinely follow the gaze of humans to outside targets. However, in most studies using object choice they fail to use communicative gestures (e.g. pointing) to find hidden food. Chimpanzees' failure to do this may be due to several difficulties with this paradigm. They may, for...
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The impact of atypical early histories on pet or performer chimpanzees
| Contributor(s):: Hani D. Freeman, Stephen R. Ross
It is widely accepted that an animal’s early history, including but not limited to its rearing history, can have a profound impact on later behavior. In the case of captive animals, many studies have used categorical measures such as mother reared or human reared that do not...
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Reconsidering coprophagy as an indicator of negative welfare for captive chimpanzees
| Contributor(s):: Hopper, Lydia M., Freeman, Hani D., Ross, Stephen R.
For captive chimpanzees, 'abnormal' behaviours include behaviours observed only in captivity (i.e. species-atypical behaviours) and those that are performed at higher rates in captivity compared to in the wild. Both types are used as metrics for evaluating captive primates' welfare....
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Is the conduct of medical research on chimpanzees compatible with their rights as a near-human species?
| Contributor(s):: Prince, AM
