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Enrichment Assessment for Geriatric African Old World Monkeys Under Human Care

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Enrichment Assessment for Geriatric African Old World Monkeys Under Human Care Central Washington University ScholarWorks@CWU All Master's Theses Master's Theses Spring 2018 Enrichment Assessment for Geriatric African Old World Monkeys under Human Care Amanda E. Osborne Central Washington University, [email protected] Follow this and additional works at: https://digitalcommons.cwu.edu/etd Part of the Animal Studies Commons, and the Biological and Physical Anthropology Commons Recommended Citation Osborne, Amanda E., "Enrichment Assessment for Geriatric African Old World Monkeys under Human Care" (2018). All Master's Theses. 952. https://digitalcommons.cwu.edu/etd/952 This Thesis is brought to you for free and open access by the Master's Theses at ScholarWorks@CWU. It has been accepted for inclusion in All Master's Theses by an authorized administrator of ScholarWorks@CWU. For more information, please contact [email protected]. ENRICHMENT ASSESMENT FOR GERIATRIC AFRICAN OLD WORLD MONKEYS UNDER HUMAN CARE _________________________________________________ A Thesis Presented to The Graduate Faculty Central Washington University _________________________________________________ In Partial Fulfillment of the Requirements for the Degree Master of Science Primate Behavior and Ecology _________________________________________________ by Amanda Elizabeth Osborne May 2018 CENTRAL WASHINGTON UNIVERSITY Graduate Studies We hereby approve the thesis of Amanda Elizabeth Osborne Candidate for the degree of Master of Science APPROVED FOR THE GRADUATE FACULTY ______________ ____________________________________________ Dr. Lori K. Sheeran, Committee Chair ______________ ____________________________________________ Julia Walz ______________ ____________________________________________ John Mulcahy ______________ ____________________________________________ Dean of Graduate Studies ii ABSTRACT ENRICHMENT ASSESSMENT FOR GERIATRIC AFRICAN OLD WORLD MONKEYS UNDER HUMAN CARE by Amanda Elizabeth Osborne May 2018 I proposed a study that determines whether enrichment regimes used for geriatric African Old World monkeys living under human care are effectively eliciting affiliative and active behaviors. I wanted to determine if alternating enrichment types used by the zoo staff were eliciting different social behaviors and locomotion in non- human primates based on different factors including ages, species, and sexes. My data collection took place at the Association of Zoos and Aquarium (AZA) accredited, Oregon Zoo in Portland, Oregon. I conducted my research from 11 June to 5 August 2017. I collected data from eight individuals of varying ages from three species: Allen’s swamp monkey (Allenopithecus nigroviridis), De Brazza’s monkey (Cercopithecus neglectus), and mandrill (Mandrillus sphinx), who are all members of the subfamily Cercopithecinae. I took observations were taken from 0930-1800h, seven days a week, which accounts for all hours that the primates were on display to the general public. I took 10 minute focal animal samples, and recorded behavior occurrences and durations from an ethogram. I used the ethogram to record locomotion and social interactions that occurred in the presence of provided enrichment. My study showed that my study subjects performed different behaviors during the zoo staff’s use of different enrichment regimes. Some species were more active or inactive than others, age was significantly correlated with iii inactivity, and some enrichment types elicited those inactive behaviors more than other types. The three species of my study can be ranked by their inactiveness to activeness as follows: 1) Cercopithecus neglectus, 2) Mandrillus sphinx, and 3) Allenopithecus nigroviridis. Of the six enrichment types used during my study, feeding forage/strategy, feeding strategy/toy, novel food/toy, and sensory/toy enrichment types all equally correlated with more inactivity than did olfactory/paper enrichment. I discovered that the geriatric and non-geriatric De Brazza’s are less active than all ages of swamp monkeys and mandrills. As there is little research on the evaluation of enrichment preferences for these three species of Old World monkeys, there is a need for further research from the scientific community to enable us to optimize welfare for primates under human care. iv ACKNOWLEDGEMENTS I would like to thank my advisor, Dr. Sheeran for her endless expertise and words of encouragement. I would also like to thank my committee members, Ms. Walz for her knowledge of the Oregon’s Zoo primates and her enthusiasm, and Mr. Mulcahy for his expertise in captive, geriatric care. Thank you to Arlen and Debra Prentice and Pete and Sandra Barlow for their generous financial contributions to this study. I want to thank Jake Funkhouser for his statistical expertise and assistance. I want to thank my friends and family for all of the motivation and encouragement they have given me. I would like to give special thanks to my PBE cohort for supporting me and one another throughout this academic journey. I would finally like to thank Ryan for giving me endless love and support through this particular adventure of our lives. v TABLE OF CONTENTS Chapter Page I INTRODUCTION ........................................................................................ 1 II LITERATURE REVIEW ............................................................................. 4 Cercopithecinae History .......................................................................... 4 Allenopithecus nigroviridis ..................................................................... 5 Cercopithecus neglectus .......................................................................... 6 Mandrillus sphinx.................................................................................... 9 Non-human Primate Aging ................................................................... 11 Welfare .................................................................................................. 12 Enrichment ............................................................................................ 14 Locomotion ........................................................................................... 17 Enrichment Objects ............................................................................... 18 Sensory Enrichment .............................................................................. 19 Habituation to Enrichment .................................................................... 21 Hypotheses ............................................................................................ 23 III METHODS ................................................................................................. 25 Study Site and Study Duration .............................................................. 25 Study Subjects ....................................................................................... 25 Data Collection and Sampling Schedule ............................................... 27 Focal Samples ....................................................................................... 28 Equipment ............................................................................................. 31 Analysis ................................................................................................. 32 IV RESULTS ................................................................................................... 35 vi TABLE OF CONTENTS (CONTINUED) Chapter Page Agonism ................................................................................................ 36 Affiliation .............................................................................................. 37 Active .................................................................................................... 38 Inactive .................................................................................................. 38 V DISCUSSION ............................................................................................. 40 Social Behaviors .................................................................................... 41 Affiliative Behavior .............................................................................. 41 Agonistic Behavior ................................................................................ 43 Active Behavior .................................................................................... 44 Inactive Behavior .................................................................................. 45 Research Limitations ............................................................................. 48 VI CONCLUSION ........................................................................................... 51 REFERENCES ........................................................................................... 53 vii LIST OF TABLES Table Page 1 Study Subjects and Life History ................................................................. 26 2 Agonistic, Affiliative, Active and Inactive Behaviors in Enclosure ........... 29 3 Focal Counts and Duration Sums for Correlated Enrichment Types and Behaviors ................................................................................................... 35 viii LIST OF FIGURES Figure Page 1 June 2017 Mandrill Enrichment Calendar .................................................. 27 ix CHAPTER I INTRODUCTION The scientific objective of my research is to determine whether daily enrichment regimes provided to aging, Old World monkeys under human care are effective in producing species
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