Cody W. Thompson, Faisal Ali Anwarali Khan, Frederick B. Stangl Jr, Robert J. Baker and Robert D. Bradley Multilocus analyses indicate a mosaic distribution of hybrid populations in ground squirrels (genus Ictidomys) Ecology and Evolution 3
DNA sequence data from mitochondrial cytochrome-b (Cytb) and Y-linked structural maintenance of chromosomes (SmcY) genes were combined with 478 nuclear loci obtained from (AFLP) to assess the extent of hybridization and genetic spatial structure of populations in two hybridizing species of ground squirrel (Ictidomys parvidens and I. tridecemlineatus). Based on AFLP analyses of 134 individuals from 28 populations, 10 populations were identified that possessed hybrid individuals. Overall estimates of FST values revealed strong support for population structure in the Cytb dataset; however, analyses of the SmcY gene and the AFLP data indicated ongoing gene flow between species.
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