First person – Meghan Barrett and Katherine Fiocca

First Person is a series of interviews with the first authors of a selection of papers published in Biology Open, helping early-career researchers promote themselves alongside their papers. Meghan Barrett and Katherine Fiocca are co-first authors on ‘Larval mannitol diets increase mortality, prolong development, and decrease adult body sizes in fruit flies (Drosophila melanogaster)’, published in BiO. Meghan is a PhD candidate in the lab of Dr Sean O'Donnell at Drexel University, Philadelphia, USA, investigating the relationships between an organism's behaviour and morphology. Katherine is also a PhD candidate in the lab of Dr Sean O'Donnell, and is investigating how nutrition affects behaviour in social insects.