Declaration Dr. Thomas H. Pringle - Buffalo Field Campaign
Declaration Dr. Thomas H. Pringle - Buffalo Field Campaign
Declaration Dr. Thomas H. Pringle - Buffalo Field Campaign
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• United States Department of Agriculture, Animal and Plant Health Inspection<br />
Service (USDA-APHIS)<br />
• Montana Fish, Wildlife, and Parks (MFWP)<br />
• Wyoming Game and Fish (WGF)<br />
• Montana Department of Livestock (MDOL)<br />
Previous genetic studies of the GYA bison relied upon opportunistic sampling<br />
animals captured on winter ranges outside of park boundaries. Over forty microsatellite<br />
loci were used to assess genetic diversity and evaluate whether more than one<br />
subpopulation exists within YNP bison (Halbert 2003). Population substructure analyses<br />
conducted in STRUCTURE (Pritchard et al. 2000) suggested the presence of three<br />
subpopulations (or breeding groups) for 166 bison exiting the park though the northern<br />
boundary, and one primary subpopulation for 63 bison exiting through West Yellowstone<br />
(Halbert 2003). Although, Halbert (2003) tested for genetic differentiation between YNP<br />
and GTNP bison herds (FST = 0.102), the rate and direction of gene flow between these<br />
parks was not thoroughly assessed. Because bison were not sampled at the geographic<br />
locations of breeding groups within the parks, population structure could not be<br />
confirmed, and the partitioning of genetic diversity among breeding groups remained<br />
unknown.<br />
An expanded assessment of population structure and gene flow between GYA<br />
bison populations through non-invasive fecal sampling, microsatellite studies, and the<br />
addition of mtDNA sequencing could confirm whether population structure among<br />
breeding groups truly exists. YNP bison breeding groups are known to congregate in two<br />
primary geographic locations (Lamar Valley/ Mirror Plateau and Hayden Valley), and<br />
3