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 12 of 12 for “"Orangutans"”.
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Effects of a Riverine Dispersal Barrier on Cultural Similarity in Wild Bornean Orangutans (Pongo Pygmaeus Wurmbii)
… variation in sampling intensity for individual orangutans, several differences in innovative behaviors exhibited at each site were identified, many of which occurred in the nesting context.</p><p>The orangutan is a model taxon for such an investigation, because wild populations exhibit a wide …
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A mixed methods study of the habituation process in wild Bornean orangutans in West Kalimantan, Indonesia
… of habituation in a population of wild Bornean orangutans living in Gunung Palung National Park in West Kalimantan, Indonesia. To do so, I explore the impacts of habituation from three distinct but intersecting perspectives: behavioral, physiological, and relational. Following the …
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Did The Pandemic Lockdowns Affect The Welfare of The Sumatran Orangutans (Pongo abelii) At The Toronto Zoo?
… the welfare measures of the Toronto Zoo Sumatran orangutans (Pongo abelii) changed when visitors were reintroduced after the lockdowns were lifted. I compared behavioural and physiological measures of stress between the lockdown and visitor introduction phases. Specifically, I studied changes in …
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Enrichment Use & Social Interactions in a Mixed-Species Enclosure of Sumatran (Pongo abelij) & Bornean Orangutans (P. pygmaeus) & Northern White-Cheeked Gibbons (Nomascus leucogenys)
… housing together multiple compatible species. Orangutans are sympatric with siamangs and agile and Bornean gibbons, so several zoos house these four Asian ape species in the same enclosure, in part, as social enrichment. In my study, I observed enrichment use and social interactions in a …
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A Novel SNP Genotyping Technique to Determine Orangutan Relatedness and Genetic Diversity at Camp Leakey in Tanjung Puting, Central Kalimantan
… of dispersal patterns in wild populations of orangutans (<em>Pongo </em>spp.) have sought to confirm behavioral observations that female orangutans tend to stay near their natal range while males disperse. In order to genotype a previously unsampled wild population of endangered orangutans at …
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Ecological and Cognitive Influences on Orangutan Space Use
… evidence of habitual route networks in wild orangutans makes them ideal candidates for examining factors that affect the establishment and use of such networks. I completed three studies using new methodology to examine ecological and cognitive factors that may affect habitual route networks …
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The Influence of Forest Structure on Sumatran Orangutan Nesting and Densities in the Lowland Dipterocarp Forests of North Sumatra
Prior studies on Bornean orangutans have suggested that orangutans were primarily selecting nest sites that provided more stable and sheltered platforms thereby offering greater comfort rather than selecting for nests which reduced the risk of predation by limiting access to ground predators …
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Between Continents
… in poetry uses the metaphor of apples and orangutans to point out how exaggerated this difference really is. Jorie Graham sees in the way young writers today are simultaneously influenced by elements of poets whose philosophies mutually exclude each other "without feeling the need to be …
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The Nuances of Locomotor Strategies in Suspensory Primates (Apes): Locomotor Costs in Terms of Skeletal Injury
… and the most severe fractures, the quadrumanus orangutans will have frequent and severe fractures, but fewer than the brachiators, and the climbing and knuckle-walking chimpanzees will have the lowest fracture occurrence and severity. As a corollary, terrestrial quadrupedal baboons will have the …
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Decision-making, Inhibition and Planning in New Caledonian crows (Corvus moneduloides)
… children, human adults, Goffin’s cockatoos, and Orangutans presented with the same tasks. The third experiment tested the NC crows' use of mental representation and pre-planning to solve a metatool task. In this experiment, the apparatuses were out-of-sight of each other, meaning crows had to …
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Evolution of Nuclear Integrations of the Mitochondrial Genome in Great Apes and their Potential as Molecular Markers
… analyses of complete genomes in humans, orangutans and chimpanzees, and preliminary studies in gorillas have revealed high numt prevalence in great apes, but rigorous comparative analyses across taxa have been lacking.</p> <p>The present study aimed to systematically compare the …
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Comparative population genetics of the Hominoidea: An investigation of locus-specific and genome-wide influences
… (humans, chimpanzees, bonobos, gorillas, and orangutans) in order to test the hypothesis that a high variance in male reproductive success, as predicted from behavioral data, may influence levels of hominoid genetic diversity. First, comparative chromosome and mitochondria) DNA diversity was …