Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 82 for “"Chimpanzees"”.
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Social Decision-Making in Bonobos and Chimpanzees
… in humans’ closest living relatives, bonobos and chimpanzees. In Chapter 1, I review existing literature on theory of mind—or the ability to understand others’ psychological states—in these species. I also present a theoretical framework to guide further investigation of social cognition in …
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Tactical behaviour and decision making in wild chimpanzees
… poses something of a paradox. In captivity, chimpanzees show cognitive abilities which seem only rarely used in the wild. The contention of this thesis is that the added complexity which a fission-fusion social system imposes on a Machiavellian primate requires complex decision-making, and …
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Love, hatred and indifference in chimpanzees: Personality, Subjective Well-Being, and dyadic-level behavior in captive chimpanzees (Pan troglodytes): Does something more than rank, age and sex drive the nature of interpersonal relationships in chimpanzees?
… items. The Affable domain scale correlated with chimpanzees who were scored high neutral in social interactions, and the agonistic scale correlated with low neutral score in social interactions.
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Paternity and father-offspring relationships in wild chimpanzees, Pan troglodytes schweinfurthii.
… be important in a patrilineal species such as chimpanzees as males will remain with fathers and other paternal kin for life, as will females until they disperse. Thus, this study aimed to further our understanding of importance of paternal kinship in social behavior by examining the most direct …
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The Effect of Sound on Captive Chimpanzees (<i>Pan troglodytes</i>)
… primates are not as well understood. Captive chimpanzees are exposed to markedly different acoustic environments than their wild counterparts. This study assessed the organic soundscape of a chimpanzee sanctuary, the Fauna Foundation, in Carignan, Québec, Canada. Noninvasive, observational …
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Captive Chimpanzees' (<i>Pan troglodytes</i>) Night-Time Enrichment Selection and Use
<p>Captive chimpanzees (<em>Pan troglodytes</em>) engage with enrichment objects extensively during the daytime, yet relatively little is known regarding their use of available enrichment at night. This study examined night-time enrichment use in three adult chimpanzees at the Chimpanzee and Human …
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A Cognitive Task as Enrichment for Chimpanzees (<i>Pan troglodytes</i>) in Sanctuary
<p>Chimpanzees (<em>Pan troglodytes</em>) hold an especially powerful attraction for researchers interested in cognition and how it developed to the degree observed in humans specifically and primates more generally. Chimpanzees are behaviorally complex primates with compelling data supporting …
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Infant care, nutritional development and lactation in chimpanzees at Ngogo, Kibale National Park, Uganda
… infants were weaned, in approximately 50 infant chimpanzees (Pan troglodytes schweinfurthii) and their mothers of one wild community at Ngogo, Uganda. Measuring nutritional development in wild primates is difficult through observations alone because confirming dietary intake of infants is …
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Ecology and Conservation of wild Chimpanzees in the Nimba Mountain, Côte d'Ivoire and Guinea
Primate Research Group
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Evidence of Language Prerequisites in Pan: Orofacial-Motor and Breath Control in Chimpanzees and Bonobos
… which contains our closest extant relatives: chimpanzees (Pan troglodytes) and bonobos (Pan paniscus). We hypothesized that OFM and BC would be present in both species of Pan and that bonobos would demonstrate increased OFM and BC due to their stronger reliance on vocal communication compared …
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Differences in the Communicative Behavior and Neurobiology of Chimpanzees (Pan troglodytes) and Bonobos (Pan paniscus)
<p>Chimpanzees and bonobos have distinctly different vocalizations, but it is unclear why these differences have evolved. We hypothesized that differences in habitat and feeding ecology have selected for bonobos to have an increased reliance on vocal communication compared to chimpanzees. To …
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The Evolution of Extended Sexual Receptivity in Chimpanzees: Variation, Male-Female Associations, and Hormonal Correlates
… coercion and the risk of infanticide, female chimpanzees (Pan troglodytes) respond to this conflict by exhibiting an exaggerated sexual swelling that advertises sexual receptivity while concealing the exact timing of ovulation. Sexual swellings impose significant costs, yet can persist into …
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Effect of Group Size on the Activity Budget of Two Captive Chimpanzees (<i>Pan troglodytes</i>)
<p>Captive facilities housing chimpanzees are required to provide adequate care and provisions such as dietary, social, and environmental enrichment to promote the psychological well-being of the apes in their care. Chimpanzees are social creatures and changes in groups as well as relocation to a …
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