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Biological and Physical Anthropology Commons™
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Articles 1 - 12 of 12
Full-Text Articles in Biological and Physical Anthropology
Social Tolerance, Cooperation, And Constraint Shape Differentiated Social Relationships In Female Chimpanzees, Stephanie Fox
Social Tolerance, Cooperation, And Constraint Shape Differentiated Social Relationships In Female Chimpanzees, Stephanie Fox
Anthropology ETDs
In this dissertation, I investigate variables that promote and constrain female-female social relationships in chimpanzees, a species where females disperse at sexual maturity, reside primarily among non-kin as adults, and where fission fusion social structure can reveal how female social behavior responds to different social contexts. I conducted my research using a combination of detailed behavioural data that I collected during a one-year field season (2019-2020) and long-term data (2010-2019) collected by the Kibale Chimpanzee Project. I show that female chimpanzees form stable, differentiated social relationships, which reflect active preferences and variation in social tolerance (Chapter 2); females leverage these …
Diet And Nutrition Of Lemurs In The Lean Season, Santiago Cassalett
Diet And Nutrition Of Lemurs In The Lean Season, Santiago Cassalett
Dissertations, Theses, and Capstone Projects
Animals must navigate complex food and nutrient environments that are constantly in flux to obtain the macro and micronutrients necessary for their growth, reproduction, and survival. The nutritional needs of animals also vary over the life course, further complicating the search for adequate foods and the nutrients within them. The hypervariable and unpredictable environment of Madagascar creates a complex nutrient landscape for lemurs in particular because they are subject to large fluctuations in food availability. These fluctuations are thought to create extreme periods of nutritional stress during the dry season (known as the lean season) for lemurs. In response, lemurs …
Dietary Development And Nutritional Ontogeny In Gorilla Beringei : A Multi-Layered, -Omics Approach, Emma C. Cancelliere
Dietary Development And Nutritional Ontogeny In Gorilla Beringei : A Multi-Layered, -Omics Approach, Emma C. Cancelliere
Dissertations, Theses, and Capstone Projects
In species who consume folivorous diets, immature individuals must contend with the challenges of extracting nutrients from fibrous foods before dietary adaptations and strategies are fully developed. Additionally, immatures have distinct nutritional needs to support their stage-specific metabolic and biophysiological requirements. To meet these stage-specific needs, while constrained by underdeveloped feeding strategies and digestive capacities, immatures may adopt distinct diets better suited to their specific developmental context. However, where dietary modification is constrained by low dietary diversity or landscape homogeneity, it is unclear how immature individuals compensate through alternative strategies. In turn, little is known about the nutritional and life …
Examining Environmental Use By Captive Lemur Catta And Varecia Rubra, Rhiannon Belcher
Examining Environmental Use By Captive Lemur Catta And Varecia Rubra, Rhiannon Belcher
All Master's Theses
There are over 100 named species of lemurs, of which 94% are considered threatened with extinction by the International Union for the Conservation of Nature (IUCN). They live in increasingly fragmented forests. To understand how best to protect them in their natural habitats, we can observe how they manipulate the environment and how they use objects, both natural and humanmade, around them. Understanding their behavior is a critical component of conservation, and observing behavior in a captive setting allows us to study lemur-environment relationships without disrupting what little habitat is left in Madagascar. In this study I investigated whether the …
Comparison Of Play Frequency In Four Sympatric Monkey Species In Kibale National Park, Uganda, Sara G. Lucci
Comparison Of Play Frequency In Four Sympatric Monkey Species In Kibale National Park, Uganda, Sara G. Lucci
Theses and Dissertations
This study describes play in red colobus (Procolobus rufomitratus), grey-cheeked mangabeys (Lophocebus albigena), black-and-white colobus (Colobus guereza), and redtail monkeys (Cercopithecus ascanius) to test Instinct-Practice Theory. Solitary locomotor play was different among the species. Rough-and-tumble play was different between male and female redtail monkeys. These results partially support Instinct-Practice Theory.
Climatic Variables Are Strong Predictors Of Allonursing And Communal Nesting In Primates, Alexandra Louppova
Climatic Variables Are Strong Predictors Of Allonursing And Communal Nesting In Primates, Alexandra Louppova
Theses and Dissertations
Allomaternal care (AMC) is widespread throughout the primate order, previous studies have focused on benefits and costs to individuals. However, our understanding of environmental impacts on AMC behaviors in primates is still limited. Our study examines how ecology and environmental factors can predict certain AMC behaviors more than others.
Effect Of Group Size On The Activity Budget Of Two Captive Chimpanzees (Pan Troglodytes), Kaeley Sullins
Effect Of Group Size On The Activity Budget Of Two Captive Chimpanzees (Pan Troglodytes), Kaeley Sullins
All Master's Theses
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 facility with new social partners, can impact each individual chimpanzee’s welfare. By tracking each chimpanzee’s activity budgets, managers can assess welfare and make improvements or adjustments if necessary. I looked at the activity budgets of two captive chimpanzees after the death of a group member and the two chimpanzees’ subsequent relocation to a novel, more socially …
Does Genotype Correlate With Phenotype? Evaluating Ruffed Lemur (Varecia Spp.) Color Vision Using Subject Mediated Automatic Remote Testing Apparatus (Smarta), Raymond Vagell
Theses and Dissertations
Ruffed lemur (Varecia spp.) color vision research was conducted using a multidisciplinary approach: psychophysics, genetic analysis, technology, and animal training. The behavioral manifestation of Varecia spp. trichromacy was shown using a touchscreen apparatus (SMARTA). Trichromats performed better than dichromats when discriminating red from green (G2 = 78.10, p < 0.001).
Collective Decision Making In Tibetan Macaques: How Followers Affect The Rules And Efficiency Of Group Movement, Amanda Rowe
Collective Decision Making In Tibetan Macaques: How Followers Affect The Rules And Efficiency Of Group Movement, Amanda Rowe
All Master's Theses
Primate societies must undergo successful collective decision making during group movement to stay cohesive and provide the ecological and evolutionary benefits of sociality. This study investigates how a fan structure facilitates successful group movement in the YA1 group of Tibetan macaques (Macaca thibetana) at Mt. Huangshan National Reserve in Anhui, China. We used structural equation modeling (SEM) to determine the relative influences of sex, age, maternal kinship, dominance, and social network centrality on the number of fans (consistent followers) an individual had, and the number of group members an individual was a fan of (fandom). SEM revealed that …
Enrichment Use & Social Interactions In A Mixed-Species Enclosure Of Sumatran (Pongo Abelij) & Bornean Orangutans (P. Pygmaeus) & Northern White-Cheeked Gibbons (Nomascus Leucogenys), Emily Veitia
All Master's Theses
Enrichment is an aspect of captive husbandry that has been shown to positively impact animals’ well-being and can be designed to encourage species-typical behaviors, such as foraging and arboreality. Enrichment can include 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 mixed-species enclosure at the Oregon Zoo, which housed two Sumatran (Pongo abelii) and two Bornean (P. pygmaeus) orangutans with …
Provisioning And Its Effects On The Social Interactions Of Tibetan Macaques (Macaca Thibetana) At Mt. Huangshan, China, Brianna I. Schnepel
Provisioning And Its Effects On The Social Interactions Of Tibetan Macaques (Macaca Thibetana) At Mt. Huangshan, China, Brianna I. Schnepel
All Master's Theses
The dispersal patterns of food resources has a significant effect on the composition of primate groups and social interactions within those groups. Humans often alter the dispersal of food. Non-humans often use affiliative behaviors to elicit tolerance or support from other group members. I investigated whether provisioned food resources alter the social interactions and group dynamics of Macaca thibetana. All-occurrence sampling and scan sampling were used for data recorded by camera traps. Trail-cameras were placed at six locations that contain natural and human food resources and recorded 60-second videos. Social behavior and proximity of the monkeys were recorded. I …
Is There Variation In The Effects Of Primate Size As Seed Dispersers?: Seed And Seedling Performance After Gut Simulation Treatments In Hydrochloric Acid, Denise Chac
Chancellor’s Honors Program Projects
No abstract provided.