I investigate physiological and environmental influences of phenotypic expression of invasive snakes and lizards at different timescales. The goal of the research is to discern physiological influences on invasive species' successes and failures to inform management and prevention. This research has included collaborations with US Geological Survey Invasive Species Science Branch and the Conservancy of Southwest Florida to investigate: wild invasive Burmese Pythons in response to short-term captivity; a population of invasive brown tree snakes in Guam as prey resources fluctuate over 25 years; multiple invasive lizard populations in Florida with differing establishment dates. I found that invasive Burmese pythons are physiologically resilient to capture and captivity stress, which may translate to their invasion success in novel environments. Fluctuating resources over time influenced expression of stress endocrinology in brown tree snakes, and expression of immune and stress reactivity were different among populations of Northern Curly-tailed Lizards and Peters's Rock Agamas. 

The goals of my continued invasion physiology research are to understand the influence of physiological plasticity on the success of invasive vertebrates by integrating cellular, molecular, and genetic approaches throughout the invasion pathway in species with different invasion histories.