Portland State University PDXScholar Dissertations and Theses Dissertations and Theses 1988 Gibbon classification : the issue of species and subspecies Erin Lee Osterud Portland State University Follow this and additional works at: https://pdxscholar.library.pdx.edu/open_access_etds Part of the Biological and Physical Anthropology Commons, and the Genetics and Genomics Commons Let us know how access to this document benefits ou.y Recommended Citation Osterud, Erin Lee, "Gibbon classification : the issue of species and subspecies" (1988). Dissertations and Theses. Paper 3925. https://doi.org/10.15760/etd.5809 This Thesis is brought to you for free and open access. It has been accepted for inclusion in Dissertations and Theses by an authorized administrator of PDXScholar. Please contact us if we can make this document more accessible:
[email protected]. AN ABSTRACT OF THE THESIS OF Erin Lee Osterud for the Master of Arts in Anthropology presented July 18, 1988. Title: Gibbon Classification: The Issue of Species and Subspecies. APPROVED BY MEM~ OF THE THESIS COMMITTEE: Marc R. Feldesman, Chairman Gibbon classification at the species and subspecies levels has been hotly debated for the last 200 years. This thesis explores the reasons for this debate. Authorities agree that siamang, concolor, kloss and hoolock are species, while there is complete lack of agreement on lar, agile, moloch, Mueller's and pileated. The disagreement results from the use and emphasis of different character traits, and from debate on the occurrence and importance of gene flow. GIBBON CLASSIFICATION: THE ISSUE OF SPECIES AND SUBSPECIES by ERIN LEE OSTERUD A thesis submitted in partial fulfillment of the requirements for the degree of MASTER OF ARTS in ANTHROPOLOGY Portland State University 1989 TO THE OFFICE OF GRADUATE STUDIES: The members of the Committee approve the thesis of Erin Lee Osterud presented July 18, 1988.