Thesis (M.A.)--Washington State University, December 2007. / Includes bibliographical references (p. 39-45).

Ulm, Univ., Diss., 2008.

Thesis (Ph. D.)--University of Chicago, Dept. of Anthropology, December 2000. / Includes bibliographical references. Also available on the Internet.

Understanding stress in primates has wide ranging implications. It impacts how we understand human stress from an evolutionary perspective and how captive and laboratory primates are kept to best impact their health and well-being. Stress studies in non-human primates often focus on measuring cortisol. Cortisol can be measured in blood, urine, feces, saliva, or hair in primates. Quantification of cortisol is typically achieved by enzyme or radio immunoassay, high performance liquid chromatography, or mass spectroscopy. Once cortisol is quantified, it is traditionally related to stress in primates by determining associations to variables classically seen as potential stressors, such as dominance rank, aggression received, food availability, or moving facilities for captive primates. It is vitally important that researchers engaging in non-human primate cortisol research properly select the sample type and quantification method best suited to answer their particular research questions. It is also important that the quantification of cortisol and the subsequent reporting of methods and results obtained is done correctly and transparently so that other researchers are able to interpret and build upon previous results. In this dissertation, the past instances of non-human primate cortisol analyses are reviewed with a particular focus on urinary analyses. A critical view is taken of past methods and means of reporting results, and suggestions for better practices are made. Researchers should be reporting ranges of raw values measured for cortisol in order to help establish expected values in specific species, as well as explicit justifications for protocol modifications if any are made. A new method for assessment of urinary cortisol in bonobos (Pan paniscus) is validated and reported. A longitudinal study of captive bonobos at the Columbus Zoo and Aquarium contributed 154 urine samples for analyses over three field seasons (2012, 2013, and 2014). A commercially available cortisol EIA kit (Arbor Assays, Ann Arbor, MI) was determined to be appropriate for use in bonobos and subsequently used to test 154 urine samples. A diurnal cortisol rhythm was detected in bonobos for the first time. Individual differences were identified in AM and PM samples and will be the foundation for future behavioral association investigations.

Apes use gestures in an intentional and highly flexible manner. It has been proposed that human language originated in gestural communication and therefore ape gestures have been of great interest to primatologists and psychologists alike. The extensive, flexible and intentional nature of ape gestural communication may also provide new insights to the study of social regulation as large communicative systems are thought to be useful in navigating complex social landscapes. To date studies of bonobos and their use of gestures has occurred in limited contexts and therefore the known repertoire of bonobos is relatively small. It is also unknown as to what bonobos use gestures for and whether they use those gestures flexibly in order to regulate their social relationships. To investigate these questions I studied a captive population of bonobos for 12 months at the Milwaukee County Zoo, Wisconsin, USA. Milwaukee bonobos used 55 gesture types over the course of the study period. I found that bonobos have particular goals behind their signalling and that bonobos used gestures consistently for specific goals and that the same gestures were used for the same goals across signallers. It was therefore possible to identify to meanings behind over half of the gestures within the bonobo repertoire. Even though the meanings of gestures were consistent across signallers, the age and sex of a signaller influenced what context and for what purpose he or she used gestural communication. Particular types of signallers used gestures for particular goals and directed those gestures towards particular recipients. Bonobos also used gestures within dialog during special circumstances in order to coordinate asymmetrical interactions. These results indicate that gestural communication is an excellent medium for investigating the influence a large, intentional and flexible communication system has on managing a complex social network.

京都大学 / 0048 / 新制・課程博士 / 博士(理学) / 甲第19264号 / 理博第4119号 / 新制||理||1593(附属図書館) / 32266 / 京都大学大学院理学研究科生物科学専攻 / (主査)教授 古市 剛史, 教授 湯本 貴和, 教授 中村 克樹 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DGAM

A Dissertation submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Master of Science, November 2012. / Hominoids practice a diverse array of locomotor behavior, from obligate terrestrial bipedalism to arboreal suspensory behavior, which is reflected in the variable morphology found in their foot bones. That hominin foot bones reflect locomotor behavior is also clear, but the forms of locomotor behaviors to be inferred are less clear. Pressure plate studies indicate that the center of pressure tends to move medially in the human foot during the last half of stance phase of bipedal gaits, while it tends to remain relatively more lateral in the bonobo and chimpanzee foot during the last half of stance phase. Here is presented a comparison of metatarsals of Homo sapiens[n=22] and two species of Pan (Pan paniscus [n=15] Pan troglodytes schweinfurthii [n=22]in order to explore the relationship between Homo and Pan metatarsal morphology and foot function. Specifically, this dissertation addresses whether cortical thickness is associated with the position of maximum change in geometry on the plantar surface in metatarsals.

No description available.

付記する学位プログラム名: 霊長類学・ワイルドライフサイエンス・リーディング大学院 / 京都大学 / 新制・課程博士 / 博士(理学) / 甲第24466号 / 理博第4965号 / 新制||理||1709(附属図書館) / 京都大学大学院理学研究科生物科学専攻 / (主査)教授 古市 剛史, 准教授 Huffman Michael Alan, 教授 今井 啓雄 / 学位規則第4条第1項該当 / Doctor of Science / Kyoto University / DFAM

Despite having being discovered nearly 80 years ago, bonobos (Pan paniscus) are still one of the least well understood of the great apes, largely remaining in the shadow of their better known cousins, the chimpanzees (Pan troglodytes). This is especially evident in the domain of communication, with bonobo vocal behaviour still a neglected field of study, especially compared to that of chimpanzees. In this thesis, I address this issue by exploring the natural vocal communication of bonobos and its underlying cognition, focusing on the role that vocalisations play during two key contexts, food discovery and sex. In the context of food-discovery, I combine observational and experimental techniques to examine whether bonobos produce and understand vocalisations that convey meaningful information about the quality of food encountered by the caller. Results indicate that bonobos produce an array of vocalisations when finding food, and combine different food-associated calls together into sequences in a way that relates to perceived food quality. In a subsequent playback study, it was demonstrated that receivers are able to extract meaning about perceived food quality by attending to these calls and integrating information across call sequences. In the context of sexual interactions, I examine the acoustic structure of female copulation calls, as well as patterns in call usage, to explore how these signals are used by individuals. My results show that females emit copulation calls in similar ways with both male and female partners, suggesting that these signals have become partly divorced from a function in reproduction, to assume a greater social role. Overall, my results highlight the relevance of studying primate vocalisations to investigate the underlying cognition and suggest that vocalisations are important behavioural tools for bonobos to navigate their social and physical worlds.