Joshua Egan

MS (Fisheries & Aquatic Biology)


Research Interest

Fisheries & Aquatic Biology
Genetics & Evolution
Habitats & Ecosystems


I am interested in the biology of fishes and factors governing the generation, distribution, and fate (persistence vs. extinction) of biological diversity. I am particularly interested in the role the ecological niche (the resource use and environmental tolerances of an organism) plays in governing species richness. My dissertation research uses the clupeiform fishes (anchovies, herrings, sardines, and their relatives) and phylogenetic comparative methods to investigate the evolution of ecological niche size and its effect on speciation rates (how quickly new species are formed within lineages). Additionally, I am quantifying the diets of clupeiforms and contributing to the development of tools for their identification.