SEX DETERMINATION

Sex determination is surprisingly variable in animals and has a significant impact on their biology and evolution. My current research examines the patterns of primary sex determination in reptiles and searches for common molecular mechanisms. I am also interested in the evolutionary mechanisms that drive transitions among sex determining modes and have received NSF funding to study this using geckos as a model. Geckos have all major forms of vertebrate sex determination, including genetic and environmental sex determining modes, and have undergone many transitions among these modes over their long evolutionary history. This work is a collaboration with David Zarkower and Tariq Ezaz.

EVOLUTION, BIOGEOGRAPHY AND SYSTEMATICS

I use DNA sequence data to reconstruct the evolutionary relationships among reptile and amphibian species, particularly geckos. I use the resulting evolutionary trees to better understand evolution and biogeography. I also use this data to inform taxonomy, classification and the description of new species. Ongoing research examines the evolution of adhesive toepads and visual system in geckos and the origins and diversification of New World geckos.

Gecko Research Collaborators:

Click HERE to learn more about geckos and see photos of over 160 gecko species

CONSERVATION BIOLOGY

Tens of thousands of turtles are commercially harvested in Minnesota each year for sale to biological supply companies and the pet trade. My M.S. thesis examined the impact of this harvest on painted turtle populations in Minnesota and helped inform regulations managing the harvest.

Painted turtles (Chrysmeys picta) on basking trap

Copyright © 2003-2013. Tony Gamble
Updated: 30 July, 2012