Dr. Ellis is the Gahan Endowed Professor of Entomology in the Entomology and Nematology Department at the University of Florida. At the University of Florida, Dr. Ellis has responsibilities in extension, instruction and research related to honey bees. Regarding his extension work, Dr. Ellis created the UF/IFAS Bee Colleges and the UF/IFAS Master Beekeeper Program. As an instructor, Dr. Ellis supervises Ph.D. and masters students. Dr. Ellis and his team conduct research projects in the fields of honey bee husbandry, biology, conservation, and ecology.