Adult size varies from 50 to 70 kg at the equator to twice that size in the extreme reaches of the Canadian Yukon and Patagonian pampas. brownii) are classified as endangered or threatened by the U. The pattern of variation within and among subspecies was employed to verify phylogeographic subdivision and to interpret the natural history of the species.
We also appreciate the expert technical assistance and insightful advice of Marilyn Raymond, Melody Roelke-Parker, Victor David, Clay Stephens, Janice Martenson, Stan Cevario, Carlos Driscoll, Al Roca, and Ellen Frazier. Until the recent Holocene, pumas coexisted with a diverse array of carnivores including the American lion (Panthera atrox), the North American cheetah (Miracynonyx trumani), and the saber toothed tiger (Smilodon fatalis).
The content of this publication does not necessarily reflect the views or policies of the Department of Health and Human Services, nor does mention of trade names, commercial products, or organizations imply endorsement by the U. Genomic DNA specimens from 315 pumas of specified geographic origin (261 contemporary and 54 museum specimens) were collected for molecular genetic and phylogenetic analyses of three mitochondrial gene sequences (16S r RNA, ATPase-8, and NADH-5) plus composite microsatellite genotypes (10 feline loci).
1995; Johnson and O'Brien 1997; Pecon-Slattery and O'Brien 1998; Van Valkenburgh et al. Pumas most certainly arrived in South America 2-4 MYBP during the Great American Interchange, when eutherian carnivores first migrated south from North America with the geologic joining of the Panamanian land bridge (Marshall et al. Molecular markers show that individuals from the North American continent comprise a large pan-mictic population and display reduced genetic variation relative to South American pumas, an indication of an historic founder effect in the North American puma ancestry.
Clarifying comments by the Institute within these highlights appear in square brackets.
From the Laboratory of Genomic Diversity, National Cancer Institute, Frederick Cancer Research and Development Center, Frederick, MD 21702-1201.