In my lab, we 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 several years I have explored the ecology and evolution of freshwater crustaceans in the genus Hyalella. Please visit my lab website for more information.

• Wellborn, G. A., and M. Thiel. 2018. The Natural History of Crustacea, Volume V: Life Histories.  Oxford University Press.
• Major, K. M., D. P. Weston, M. J. Lydy, G. A. Wellborn, and H. C. Poynton. 2018. Unintentional exposure to terrestrial pesticides drives widespread and predictable evolution of resistance in freshwater crustaceans. Evolutionary Applications (in press)
• Wellborn, G. A., and R. B. Langerhans. 2015. Ecological opportunity and the adaptive diversification of lineages. Ecology and Evolution 5: 176-195.
• Wellborn, G. A., J. D. S. Witt, and R. D. Cothran. 2015. Chapter 31: Class Malacostraca, Superorder Peracarida and Syncarida. Pages 781-796 in J. H. Thorp, D. C. Rogers, and K. Tockner (eds.), Thorp and Covich’s Freshwater Invertebrates, Fourth Edition.  Volume I: Ecology and General Biology.  Elsevier.
• Weston, D. P., H. C. Poynton, G. A. Wellborn, M. J. Lydy, B L. Blalock, M. S. Sepulveda, and J. K. Colbourne.  2013.  Multiple origins of pyrethroid insecticide resistance across the species complex of a nontarget aquatic crustacean, Hyalella azteca.  Proceedings of the National Academy of Sciences 110: 16532-16537.
• Cothran, R. D., A. R. Stiff, K. Chapman, G. A. Wellborn, and R. A. Relyea.  2013.  Reproductive interference via interspecific pairing in an amphipod species complex.  Behavioral Ecology and Sociobiology 67: 1357-1367.
• Weston, D. P., H. C. Poynton, G. A. Wellborn, M. J. Lydy, B L. Blalock, M. S. Sepulveda, and J. K. Colbourne.  2013.  Multiple origins of pyrethroid insecticide resistance across the species complex of a nontarget aquatic crustacean, Hyalella azteca.  Proceedings of the National Academy of Sciences 110: 16532-16537.
• Wellborn, G. A., and E. Capps. 2013. Establishment of a new population by a single gravid colonist: implications for Hyalella biogeography and speciation. Evolutionary Ecology 27: 101-115.
• Wellborn, G.A., and R. Broughton. 2008. Diversification on an ecologically constrained adaptive landscape.Molecular Ecology 17: 2927-2936.
• Wellborn, G. A., and R. D. Cothran. 2007. Niche diversity in crustacean cryptic species: complementarity in spatial distribution and predation risk. Oecologia 154: 175-183.