Publications
| genetic diversification, vicariance, and selection in a polytypic frog. | spatial patterns of heritable phenotypic diversity reflect the relative roles of gene flow and selection in determining geographic variation within a species. we quantified color differentiation and genetic divergence among 20 populations of the red-eyed tree frog (agalychnis callidryas) in lower central america. phylogenetic analyses revealed 5 well-supported mitochondrial dna clades, and we infer from our phylogeny that geographic barriers have played a large role in structuring populations. t ... | 2009 | 19589848 |
| discordant patterns of evolutionary differentiation in two neotropical treefrogs. | comparative studies of codistributed taxa test the degree to which historical processes have shaped contemporary population structure. discordant patterns of lineage divergence among taxa indicate that species differ in their response to common historical processes. the complex geologic landscape of the isthmus of central america provides an ideal setting to test the effects of vicariance and other biogeographic factors on population history. we compared divergence patterns between two codistrib ... | 2009 | 19368645 |