Study on Chorus Frog Hybridization Published in Ecology and Evolution

Chorus Frog (Pseudacris)In collaboration with the lab of Emily Lemmon at Florida State University, Dr. Brown and former LSU doctoral student Eric N. Rittmeyer spent several years sampling chorus frogs (Pseudacris fouquettei and P. nigrita) from a hybrid zone that occurs along the Pearl River, separating Louisiana and Mississippi. By comparing modern samples to tissue samples collected 40 years earlier and stored in the LSU Museum of Natural Science, they were able to show that the hybrid zone has stayed in roughly the same position but widened over the decades: