Publications

hybridization between multiple fence lizard lineages in an ecotone: locally discordant variation in mitochondrial dna, chromosomes, and morphology.	we investigated a hybrid zone between two major lineages of fence lizards (sceloporus cowlesi and sceloporus tristichus) in the sceloporus undulatus species complex in eastern arizona. this zone occurs in an ecotone between great basin grassland and conifer woodland habitats. we analysed spatial variation in mtdna (n=401; 969 bp), chromosomes (n=217), and morphology (n=312; 11 characters) to characterize the hybrid zone and assess species limits. a fine-scale population level phylogenetic analys ...	2007	17305859
evidence for concerted movement of nuclear and mitochondrial clines in a lizard hybrid zone.	moving hybrid zones provide compelling examples of evolution in action, yet long-term studies that test the assumptions of hybrid zone stability are rare. using replicated transect samples collected over a 10-year interval from 2002 to 2012, we find evidence for concerted movement of genetic clines in a plateau fence lizard hybrid zone (sceloporus tristichus) in arizona. cline-fitting analyses of snp and mtdna data both provide evidence that the hybrid zone shifted northward by approximately 2 k ...	2017	28133829