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Naidu, A.; Fitak, R.R.; Culver, M. | |
Potential barriers restricting gene flow among mountain lions in Arizona | |
2014 Conference Proceeding | |
We investigated the population genetic structure of mountain lions (Puma concolor) in Arizona from hunter-harvested tissue and scat samples collected during 2008-2012. Our goal was to examine what geographic features are potentially restricting gene flow among mountain lions in the state. We genotyped 466 DNA samples for 10 well-known Felis catus microsatellite DNA markers, and with "PumaPlex" - a panel of 26 single nucleotide polymorphisms (SNPs) recently developed for population genetic studies on mountain lions. We found the highest statistical support for four sub-populations of mountain lions in Arizona. Geographic visualization of these sub-populations suggested that Interstate highways (particularly Interstate - 10 west of Phoenix, Interstate- 17 and Interstate 40) and the lower Colorado River might be restricting gene flow among mountain lions. To corroborate genetic data on mountain lion population substructure and connectivity, we are currently creating a GIS-based habitat suitability model for mountain lions that will provide us with the potential corridors for mountain lion movement across these barriers. Data generated from this study will be useful for wildlife managers, stakeholders, and conservation planners in making regional or statewide management decisions for mountain lions, designating wildlife corridor areas, and facilitating collaborative research between individuals, laboratories and agencies. |
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