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Associate Professor of Zoology
Phone: (405)325-1421/7430
Fax: (405)325-6202RM/Lab:SH208/209
Dr. Wellborn's Web Page
Current Research Interests and Subject Areas Available for Graduate Research
In my research, I explore ways in which interactions among species, such as predation and competition, influence the origin and maintenance of species diversity on both ecological and evolutionary scales. My approach is mechanistic. That is, I study how traits of individuals, such as body size, life history, and behavior, influence the nature of species interactions and ultimately generate patterns in populations and communities. Furthermore, I study how these interactions shape species evolution and lineage diversification. My study systems are freshwater animal communities, and for the past few years I have explored the ecology and evolution of freshwater crustaceans in the genus Hyalella. This current work includes (1) ecological studies in both the field and laboratory, (2) use of population genetic and phylogenetic tools, including allozyme and DNA sequence analysis, (3) field and laboratory studies of mating behavior and sexual selection, and (4) chemical ecology. Students interested in working in my laboratory are welcome to explore projects in many areas of ecology, evolution, and behavior.
To learn more about this research, visit Dr. Wellborn's web page.
Ph.D., University of Michigan
M.S., University of Texas
B.S., University of Texas
Selected publications:
Wellborn, G. A., and S. Bartholf. 2005. Ecological context and the interaction of natural and sexual selection in two amphipod species. Oecologia 143:308-316.
Wellborn, G. A., R. D. Cothran, and S. Bartholf. 2005. Life history and allozyme diversification in regional ecomorphs of the Hyalella azteca (Crustacea: Amphipoda) species complex. Biological Journal of the Linnean Society 84:161-175.
Wellborn, G. A., and R. D. Cothran. 2005. Evolution and ecology of mating behavior in freshwater amphipods. In E. Duffy and M. Thiel, editors. Evolutionary ecology of social and sexual systems: crustaceans as model organisms. Cambridge University Press. (in press)
Wellborn, G. A., and R. D. Cothran. 2004. Phenotypic similarity and differentiation among sympatric cryptic species in a freshwater amphipod species complex. Freshwater Biology 49:1-13.
Wellborn, G. A. 2002 Tradeoff between competitive ability and antipredator adaptation in a freshwater amphipod species complex. Ecology 83:129-136.
Wellborn, G. A., D. K. Skelly, and E. E. Werner. 1996. Mechanisms creating community structure across a freshwater habitat gradient. Annual Review of Ecology and Systematics 27:337-363.
Wellborn, G. A. 1995. Determinants of reproductive success in freshwater amphipod species differing in body size and life history. Animal Behaviour 50:353-363.
Wellborn, G. A. 1994. Size-biased predation and the evolution of prey life histories: a comparative study of freshwater amphipod populations. Ecology 75:2104-2117.
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