Students in our lab examine aspects of speciation from the perspective of geographic variation in behavior in vertebrate systems. Much of our research focuses on a unisexual-bisexual species complex of mollies consisting of the Amazon molly (Poecilia formosa), an all female gynogentic fish that arose from the parental species: sailfin mollies (Poecilia latipinna) and Atlantic mollies (Poecilia mexicana) ~ 100,000 years ago.

Recently, our lab has moved into some conservation related topics.  We examine predator-prey dynamics and the effects of introduced predators in the federally threatened and endangered aquatic salamanders Eurycea nana, E. tonkawae and E. sosorum. We also examine stress response of these salamanders to anthropogenic factors. We have also done similar work with the federally endangered fountain darter, Etheostoma fonticola.


Lab links