Current Phylogenetics Projects

Phylogenomics of Pleuroceridae

Snails in the family Plueroceridae are found in springs, creeks, and rivers across the Eastern United States. Yet, a robust phylogenetic hypothesis for this family does not exist. This limits our ability to understand these snails. For example, a phylogenetic hypothesis is needed to better understand how different egg-laying seen within Pleuroceridae have evolved. We are using a target capture approach (also known as anchored enrichment) to sequence hundreds of genes and infer the phylogeny of Pleuroceridae. This project combines fieldwork to collect snails, lab work to generate molecular data, and computational biology to analyze genomic data for hundreds of individuals. As one of the most imperlied groups of animals on the planet.

Phylogenetics of Juga

Juga is a genus of freshwater snails found from Northern Washington to Northern California. These snails are in the family Semisulcospiridae, which is the sister family to Pleurocerida. juga includes wide ranging riverine species to narrow range endemics only found in one or two springs. Some of these species are undescribed and often referred to with an informal system of common names. This complicates efforts to effectively conserve Juga biodiversity. We are working to elucidate relaionships within the genus and formally describe species. My lab is working in close collaboration with Ellen Strong at the National Museum of Natural History.

Deep Relationships of Invertebrates

We are broadly interested in deep invertebrate relationships and the methods used to infer them. Much of my past work has focused on inferring relationships among ctenophores and determing their placement on the animal tree of life. Most of the lab's current work on this topic examines how different methods and models perform in correctly inferring difficult phylogenetic questions.