Intergeneric Hybrid Baboons
Source: International Journal of Primatology, Volume 18, Number 4, 199708 , pp. 597-627(31)
Abstract:Though belonging to genera that have been distinct for several million years, gelada and common baboons—Theropithecus gelada and Papio hamadryas sensu lato, respectively—interbreed occasionally, even in the wild. A female hamadryas at Bihere Tsige Park, Addis Ababa, Ethiopia, apparently favored a gelada male over eligible conspecifics and produced several offspring with him. The F1 hybrids were large but developmentally normal. In skull and tooth form, and to a lesser extent in postcranial proportions, they were intermediate between the parental forms but lacked most of their parents' derived, (sub)species-specific epigamic characters. A female infant born to a subadult F1 was sired by a hamadryas. The backcross infant appeared normal and was still flourishing at about 2.5 years. Though perhaps impeded by natural selection against poorly adapted hybrids, theoretically interspecific hybridization could exceed mutation as a source of novel, preadapted genes in the wild.
Document Type: Research Article
Affiliations: 1: Department of Anthropology, New York University, New York, New York 10003 2: Department of Anthropology, Washington University, St. Louis, Missouri 63130. Department of Biology, Addis Ababa University, Addis Ababa, Ethiopia 3: Department of Anthropology, Washington University, St. Louis, Missouri 63130. Department of Anatomy and Neurobiology, Washington University Medical School, St. Louis, Missouri
Publication date: 1997-01-01