Animal Studies Commons^™

Cooperative Bargaining During Mate Competition: A Test In Male Guppies, Maddisen Bell

All Master's Theses

Competition for mating opportunities among individuals of the same sex is a well-documented phenomenon, yet the extent of cooperation in such contexts remains underexplored. This study aims to investigate the occurrence of cooperative bargaining between two males in scenarios of limited and equal female availability, using non-wild descendants of the Trinidad guppy (Poecilia reticulata) as a model species. Four experimental trials assessed courtship length (in seconds) and male-female and male-male interactions, including courtship and aggressive behaviors based on previous research (Magurran et al., 1991). The analysis included the examination of the duration of courtship, the number of aggressive …

The Auricular Surface Of Chimpanzees (Pan Troglodytes) As An Indicator Of Age, Kalila Garrison

All Master's Theses

Great ape skeletal remains are scarce and their use in biological profile estimations has been limited. Skeletal remains analysis provides key demographic information and ecological context to the individual. Chimpanzees (Pan troglodytes) share skeletal morphological characteristics with humans, and this study seeks to understand if two noninvasive methods using the auricular surface of the ilium to age human skeletal remains could be applied to chimpanzees. The sample consisted of n = 8 individual left auricular surfaces from known age groups of both sexes. Firstly, the Buckberry and Chamberlain Method assigns numerical values to five different traits on the auricular …

Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison

All Master's Theses

Grooming is one of the crucial social behaviors of primate species that functions to remove parasites and maintain social bonds. Although, much data exists to support the idea that grooming is essential in forming and sustaining social bonds among individuals, there is a lack of information about the extent to which it removes ectoparasites or contributes to the spread of internal parasites. To fill this gap in the literature, we investigated the relationship between social contact behavior including grooming and intestinal parasite infection in Tibetan macaques (Macaca thibetana). This species lives at Mt. Huangshan in China. We used …

The Use Of Field Philosophy In Conserving The World's Rarest Ape, The Hainan Gibbon (Nomascus Hainanus): A Philosophical Engagement With Researchers And Conservationists, Jocelyn Callahan

All Master's Theses

The Hainan gibbon (Nomascus hainanus) is the world’s rarest ape. Their position on the brink of extinction raises many questions about conservation, existence, and agency. To explore these issues and draw attention to this Critically Endangered primate, I considered the Hainan gibbon from the perspective of field philosophy (i.e., philosophy carried out in the field with non-philosophers). I conducted semi-structured interviews with eight researchers/conservationists and analyzed their creative works. I collected additional information through a systematic literature review. I asked four research questions: (1) Based on their lived experiences, how do researchers and conservationists understand the Hainan gibbon? …

Using Primates As A Flagship Species In Marketing Campaigns: Effects On Proenvironmental Attitudes And Behavioral Intentions, Taylor Barber

All Master's Theses

Shade coffee plantations grow coffee under a canopy of trees and provide alternative habitats for many bird and primate species, known as agroecosystems, particularly in Latin America. The aim of the current project was to better educate the public about shade plantations and the positive effects they can have on conservation for primates. In addition, marketing tactics such as the presence of a shade plantation certification label and howler monkey images were assessed for their effects on consumer purchasing intentions as well as participant support for biodiversity and sustainability. Participants were recruited through the Department of Psychology’s research system at …

Staff Perceptions Of Responsibility And Implementation Of Cognitive Enrichment For Non-Human Primates In Zoo Settings, Ember Nevada Toth

All Master's Theses

In zoos, caregivers have considered enrichment as vital for their animal collections’ physical health and development. Since primate species are endangered and continue to decline in numbers in their natural habitat, zoos are steadily becoming the only places we can view and learn about them. In today’s zoos, cognitive enrichment—which falls into overlapping categories of enrichment and does not yet have a universally accepted definition—is either absent or inconsistently offered. Providing challenges to stimulate cognitive well-being has been found to influence the overall welfare of captive primates. Cognitive enrichment is considered very important according to zookeeper surveys but is not …

Chimpanzee (Pan Troglodytes) Skin Temperature During Resting Behavior At Different Ambient Temperatures, Benjamin Lake

All Master's Theses

Thermal imaging, as a tool in psychological research, has been used to distinguish mental states evoked by different environmental and social cues, with prior research across several species. Ambient temperature can affect the precision of the measures of body temperature, however, so we investigated a methodology for recording thermal imaging data in sanctuary-housed chimpanzees (Pan troglodytes) while they engaged in resting behavior across different ambient temperatures. Data were collected on 30 adult chimpanzees (16 females and 14 males) ranging in age from 21 to 53 years (Mage = 33.4 years, SD = 8.0). The chimpanzees lived in nine social groups …

Infant-Maternal Behaviors During Non-Maternal Infant Handling Interactions In Captive Long- Tailed Macaques (Macaca Fascicularis), Kristy Abney

All Master's Theses

The main caregiver of an infant Long-tailed macaque (Macaca fascicularis) is their mother. However, mothers often allow infant-handling interactions with other individuals in their group. While there are many hypotheses to explain the infant-handling phenomenon, there are few systematic investigations of how mothers respond to non-mother infant-handling interactions. At Alpha Genesis Inc., I conducted 33 focal follows for each mother-infant dyad (N = 10) over an eight-week period on captive macaques to determine if infant behaviors during infant-handling interactions resulted in mothers interrupting the interaction; if mothers were more likely to interrupt infant-handling interactions when infants showed signs …

A Preliminary Assessment Of Compassion Fatigue In Chimpanzee Caregivers, Mary Lee A. Jensvold

Anthropology and Museum Studies Faculty Scholarship

Compassion fatigue is defined as “traumatization of helpers through their efforts at helping others”. It has negative effects on clinicians including reduced satisfaction with work, fatigue, irritability, dread of going to work, and lack of joy in life. It is correlated with patients’ decreased satisfaction with care. Compassion fatigue occurs in a variety of helping professions including educators, social workers, mental health clinicians, and it also appears in nonhuman animal care workers. This study surveyed caregivers of chimpanzees using the ProQOL-V to assess the prevalence of compassion fatigue among this group. Compassion satisfaction is higher than many other types of …

An Evaluation Of Ethograms Measuring Distinct Features Of Enrichment Use By Captive Chimpanzees (Pan Troglodytes), Julia L. Greeson, Kara I. Gabriel, John B. Mulcahy, Bonnie King Hendrickson, Susan D. Lonborg, Jay C. Holloway

Student Published Works

Environmental enrichment provides mental stimulation and minimizes abnormal behaviors in captive animals. In captive chimpanzees, individual animals may vary in the ways in which they benefit from enrichment or use enrichment devices, so investigating nuances in enrichment use may improve the welfare of captive chimpanzees. In the current study, three ethograms measuring distinct features of enrichment use (i.e., enrichment object, manipulation behavior, and social context) were evaluated by coding videos of captive chimpanzees (Pan troglodytes) at Chimpanzee Sanctuary Northwest in Cle Elum, WA. A total of 732 min and 58 s of video footage was coded from a larger video …

Is Chimpanzee (Pan Troglodytes) Wounding Frequency Affected By The Presence Versus Absence Of Visitors? A Multi-Institutional Study, Robin Elana Salak, Christina Cloutier Barbour

Student Published Works

Visitor effect studies have had inconsistent results, due in part to the inability to control for all confounding variables such as time of day, seasonal weather patterns, and so forth. This study represents the first instance where chimpanzee (Pan troglodytes) wounding frequencies were investigated across extensive time periods in the presence and complete absence of visitors, thus eliminating many visitor-related variables. Additional variables were eliminated through the zoo selection process, based on institutional responses to a 29-question survey, providing a novel approach to the question of visitor effects. The aim of this study was to determine if visitors …

Activity Levels Of Bat Species At Interstate Highway Sites With And Without Wildlife Underpasses In The Washington Cascades, Jenna Chapman

All Master's Theses

Roads force wildlife to navigate degraded and fragmented habitats across the globe, creating barriers to movement and increasing the risk of mortality. This includes bats, whose movements between foraging and roosting habitats may be impeded by roads. Wildlife crossing structures (WCS) are a common mitigation strategy to increase connectivity, but investigation into bat activity in and around these structures is limited. I investigated bat species presence and activity along Interstate-90 in the Cascade Range of Washington State. My goal was to test whether all bat species found in the nearby forest were also active along the highway, and whether bat …

Examining The Function Of Stone Wrapping Behavioral Pattern In Balinese Long-Tailed Macaques (Macaca Fascicularis), Patricia Mitchell

All Master's Theses

Long-tailed macaques (LTMs, Macaca fascicularis) have multiple stone handling (SH) patterns that vary in form and complexity across different populations, but little is known about the group of Balinese LTM’s motivation to wrap stones in the Monkey Forest of Ubud, Indonesia. This study focuses on whether the SH pattern, wrap (WRP), is an object play behavior with the potential of becoming a more functionally complex behavior (e.g., tool use). SH sequences were collected using all-occurrence and focal sampling and examined using the program Behavioral Observation Research Interactive Software (BORIS). In total, 322 minutes of footage were reviewed for both stones …

Habitat Characteristics Or Protected Area Size: What Is More Important For The Composition And Diversity Of Mammals In Nonprotected Areas?, Wenbo Li, Jinhua Li, Peipei Yang, Bowen Li, Chao Liu, Lixing Sun

Biology Faculty Scholarship

The margins of protected areas are usually considered to have greater forest degradation, and given that most mammals live outside protected areas, researchers and conservation practitioners are increasingly recognizing that nonprotected areas must be incorporated into conservation strategy. However, the strategy used to manage these areas still involves increasing the size of protected areas, while not considering the habitat characteristics and requirements of the species. In this study, during a 3-year period, camera trap and habitat characteristic surveys were used to estimate composition, diversity, and habitat characteristics of mammals to determine habitat characteristics or increase the size of protected areas …

Sex-Specific Variation Of Social Play In Wild Immature Tibetan Macaques, Macaca Thibetana, Tong Wang, Xi Wang, Paul A. Garber, Bing-Hua Sun, Lixing Sun, Dong-Po Xia, Jin-Hua Li

Biology Faculty Scholarship

Theories proposed to explain social play have centered on its function in establishing social relationships critical for adulthood, its function in developing motor skills needed to survive, and promoting cognitive development and social learning. In this study, we compared variations in social play among infant and juvenile male and female Macaca thibetana. Given that this species is characterized by female philopatry and male dispersal, we hypothesized that immature females use social play as a mechanism to develop bonds that persist through adulthood whereas immature males use play to develop social skills needed to successfully enter new groups. The results indicated …

Effects Of Hierarchical Steepness On Grooming Patterns In Female Tibetan Macaques (Macaca Thibetana), Dong-Po Xia, Xi Wang, Paul A. Garber, Bing-Hua Sun, Lori K. Sheeran, Lixing Sun, Jin-Hua Li

Anthropology and Museum Studies Faculty Scholarship

Hierarchical steepness, defined as status asymmetries among conspecifics living in the same group, is not only used as a main characteristic of animal social relationships, but also represents the degree of discrepancy between supply and demand within the framework of biological market theory. During September and December 2011, we studied hierarchical steepness by comparing variation in grooming patterns in two groups of Tibetan macaques (Macaca thibetana), a primate species characterized by a linear dominance hierarchy. Using a focal sampling method, we collected behavioral data from two provisioned, free-ranging groups (YA1 and YA2) at Mt. Huangshan, China. We found …

Sexual Interference Behaviors In Male Adult And Subadult Tibetan Macaques (Macaca Thibetana), Kui-Hai Pang, Amanda K. Rowe, Lori K. Sheeran, Dong-Po Xia, Lixing Sun, Jin-Hua Li

Anthropology and Museum Studies Faculty Scholarship

Male nonhuman primate sexual interference, which includes copulation interruption and copulation harassment, has been related to reproductive success, but its significance has been challenging to test. Copulation interruption results in the termination of a copulation before ejaculation, whereas copulation harassment does not. We conducted this study using the all-occurrence behavior sampling method on sexual interference behaviors of seven adult and four subadult male Tibetan macaques (Macaca thibetana) in mating and non-mating seasons at Mt. Huangshan, China, from August 2016 to May 2017. Our results showed that males’ individual proportion of copulation interruption and harassment was higher during the mating season …

No Ape Left Behind: Orangutan Conservation Education Project, Danna Boshak

All Graduate Projects

Orangutans are critically endangered and if action is not taken, their extinction is imminent. Zoological institutions worldwide serve as an educational means to engage the broader public in conservation awareness and action behaviors. The Association of Zoos and Aquariums (AZA) created the Saving Animals From Extinction (SAFE) initiative to provide zoos with a platform to expand conservation efforts beyond their institutions. In collaboration with the Orangutan SAFE (OSAFE) education committee, the No Ape Left Behind: Orangutan Conservation Education Project develops educational activity resources that provide information about orangutan behavior and ecology as well as action items that individuals can take …

Extirpation Risk Of The Endangered Golden Langur (Trachypithecus Geei) Inside And Outside Biological Corridors, Langthel Sub-District, Trongsa, Central District Bhutan, Kuenzang Dorji

All Master's Theses

I assessed extirpation risks of the golden langur (Trachypithecus geei) in two landscapes (inside and outside the biological corridor). Working with a team of trained scientists, I collected data on group size, feeding range, sleeping sites, and predation on golden langurs from Langthel sub-districts, Trongsa district, central Bhutan. I used scan sampling to follow 24 groups of golden langurs (15 groups outside and 9 groups inside the biological corridor) to estimate average group sizes in the two landscapes. I confirmed their sleeping sites and recorded the physiognomies of sleep sites and dimensions of the trees used as sleeping …

The Human—Long-Tailed Macaque (Macaca Fascicularis) Interface At Don Chao Poo Forest, Phana, Thailand, Ashton M. Asbury

All Master's Theses

When provisioned food is available, human-macaque coexistence may result in altered macaque behaviors and the possibility of bidirectional disease transmission through interspecies contact. Don Chao Poo forest in Thailand is a conservation site where ~ 1,000 long-tailed macaques (Macaca fascicularis) live and interact with people, which includes being provisioned by volunteers and visitors. Phana macaques are habituated to human presence as a result of their frequent interactions with people. I tested whether 1) men and women are equally likely to have contact interactions with macaques, 2) adult and immature macaques are equally likely to have contact interactions with …

Evaluating Compassion Satisfaction And The Risk Of Compassion Fatigue Among Those Working At Non-Human Primate Sanctuaries And Wildlife Centers, Madalyn Rantala

All Master's Theses

Compassion fatigue, an occupational risk commonly associated with caregiving professions, can have adverse effects for individual employee wellbeing, organizational productivity, and the quality of care that patients receive. Within animal-care worker samples, previous research suggests that around 25 percent of employees are at a high risk of developing compassion fatigue (i.e., experiencing burnout and secondary traumatic stress concurrently). To my knowledge, this thesis is the first study to explore compassion fatigue within the primate sanctuary field. Thirty-nine eligible participants completed an online survey that probed professional quality of life via the ProQOL 5, perceived workplace support via the Trauma-Informed Organizational …

Playing With Relatives: Genetic Kinship And Play Behavior In Juvenile Tibetan Macaques, Riley Derby

All Master's Theses

This thesis is composed of a journal-ready article and an accompanying appendix containing data and figures. In this thesis, I statistically analyzed the relationship between player age, player sex, genetic kinship and social play duration in juvenile Tibetan macaques.

Chapter I provides a general introduction and addresses current and past literature on the behavior, ecology and play among macaque genera and Tibetan macaques within this study. I review the fitness benefits of play behavior and the influence of kin selection on macaque social life. Additionally, I review the existing literature on Tibetan macaque play and how the current study will …

Patterning And Quality Of Male-Male Interactions In Hamadryas Baboons (Papio Hamadryas), John Calcitrai

All Master's Theses

The social structure of a primate group is defined as the content, quality, and patterning of interactions and relationships among the members of the social group. Ecological variables, stress physiology, and phylogenetic inertia play a role in regulating measures of interactions and relationships between non-human primates. To examine social dynamics among male hamadryas baboons, video recordings of focal follows of this species were coded for three behavioral categories: self-directed behaviors (SDB), socio-positive behaviors, and agonistic behaviors. The analysis of self-directed behaviors revealed no differences in SDB across males of differing sex classes (i.e., Leader Male, Follower Male, or Solitary Male), …

Infant Attraction: Why Social Bridging Matters For Female Leadership In Tibetan Macaques, Xi Wang, Dong-Po Xia, Lixing Sun, Paul A. Garber, Randall C. Kyes, Lori K. Sheeran, Bing-Hua Sun, Bo-Wen Li, Jin-Hua Li

Biology Faculty Scholarship

Leadership is a key issue in the study of collective behavior in social animals. Affiliation–leadership models predict that dyadic partner preferences based on grooming relationships or alliance formation positively affect an individual’s decision to follow or support a conspecific. In the case of many primate species, females without young infants are attracted to mother–infant dyads. However, the effects of mother–infant–female associations on affiliation–leadership models remain less clear. In free-ranging Tibetan macaques Macaca thibetana, we used social network analysis to examine the importance of “mother-infant-adult female” social bridging events as a predictor of who leads and who follows during group …

Mommy Issues: Do Differential Rearing Histories Affect The Social Behavior Of Captive Chacma Baboons (Papio Ursinus), Madeleine Spencer

All Master's Theses

I observed the behavior of 17 chacma baboons (Papio ursinus) in order to understand the relationship between rearing history, dominance hierarchy, and social behavior. The Centre for Animal Rehabilitation and Education (C.A.R.E.) has utilized hand-rearing in the past and is currently using a surrogate-rearing method. Hand-rearing involves one or more primary caregivers attending to an infant for 6 – 12 months. Surrogate-rearing involves one individual being the primary surrogate for the first 3 months of the infant’s life prior to bonding her or him to an adult female baboon before integrating both back into the surrogate’s troop. Mother-reared …

Effects Of Different Housing Configurations On Captive Chimpanzee (Pan Troglodytes) Behavior In Holding Area During Construction, Kailyn Campbell

All Master's Theses

In this study, I explored the behaviors, social interactions, and effects different housing configurations on chimpanzees in a zoological environment during a period of construction. I collected noninvasive, observational data at the Oregon Zoo in Portland, Oregon on a small group of chimpanzees, three females and one male, between the ages of 45 and 50 that are split daily into two separate groups of two. I used the focal animal sampling method to record behaviors from an adapted ethogram. I hypothesized that the Oregon Zoo chimpanzees would behave differently depending on which chimpanzee they were housed with. I predicted that …

The Development Of Social Behavior In The Tibetan Macaque (Macaca Thibetana), Rose Amrhein

All Master's Theses

Social cognition is vital for the proper integration into adulthood for any highly social animal species. The development of social intelligence during the childhood and adolescence of a social organism affects the individual throughout its life. This social intelligence allows for the establishment and maintenance of bonds through the formation of empathy, the understanding of intention and emotion, and theory of mind in some species. Changes to the rate and effectiveness of social development could lead to an individual incapable of integrating into the social environment of adulthood. Yet, much still needs to be learned about the process and influences …

Effects Of A Voluntourism Experience On Perceptions And Attitudes Toward Environmental Sustainability And Science, Mireille Gonzalez

All Master's Theses

The current study explored the impact of a volunteer tourism experience at a community-based conservation (CBC) organization on volunteer perceptions, attitudes, and values toward conservation, the environment, and science. The Madagascar Research and Conservation Institute (MRCI) is a CBC organization that utilizes volunteers as a data collection resource and workforce for conservation and community outreach initiatives. The current study analyzed data from volunteer experience evaluations (VEE), which included pre- and post-experience self-report surveys comprised of qualitative and quantitative response sections, completed by 45 voluntourists over a three-month span. The quantitative findings indicate that the voluntourist experience improved participants’ self-reported attitudes …

How Researchers Address Ethical Concerns Regarding Habituating Nonhuman Primates: Results Of A Survey And Suggestions For Future Practice, Victoria M. Green

All Master's Theses

In this study, I analyzed primatologists’ perceptions regarding the habituation of wild nonhuman primates. I distributed an online survey to primatologists and received 406 responses, 286 of which were used in data analysis. I used two sets of six-scale Likert scoring questions to determine respondents’ perceived ethical concerns and ethical duties. Exploratory factor analysis of 11 items revealed three factors regarding ethical concern, including concerns for the indirect harms of habituation (M = 5.03; SD = 0.89), unhabituated behavior after habituation is established (M = 4.98; SD = 1.08), and harms during habituation (M = 3.94; SD …

Playing It Cool: Characterizing Social Play, Bout Termination, And Candidate Play Signals Of Juvenile And Infant Tibetan Macaques (Macaca Thibetana), Kaitlin R. Wright, Jessica A. Mayhew, Lori K. Sheeran, Jake A. Funkhouser, Ronald S. Wagner, Li-Xing Sun, Jin-Hua Li

All Faculty Scholarship for the College of the Sciences

Play behaviors and signals during playful interactions with juvenile conspecifics are important for both the social and cognitive development of young animals. The social organization of a species can also influence juvenile social play. We examined the relationships among play behaviors, candidate play signals, and play bout termination in Tibetan macaques (Macaca

thibetana) during juvenile and infant social play to characterize the species play style. As Tibetan macaques are despotic and live in groups with strict linear dominance hierarchies and infrequent reconciliation, we predicted that play would be at risk of misinterpretation by both the individuals engaged in the play …