The main focus of my research has been on reproduction in reptiles, with a particular emphasis on the physiology and ecology of eggs and embryos. I have studied eggs of all the major groups of reptiles in the world and have recently been studying viviparous species. My current research is concerned mainly with the evolution of viviparity (live birth) using lizards as the model. I combine physiology, anatomy and molecular biology to understand the evolution of viviparity across a range of species that have different placental complexities. Other recent projects in the lab include reproduction in shovel-nosed rays, the physiology and ecology of invasive lizards, sex determination in lizards, physiological ecology of flat rock spiders and feeding behaviour in desert lizards. I maintain active collaborations with other scientists in the USA, Colombia, and Australia.
