Are Damsels Causing Distress?: Identifying Traits that Make Marine Invasive Species Successful

March 4, 2026

Dr. John Majoris, Assistant Professor of Biology, Pennsylvania State University

Across the globe, terrestrial and aquatic ecosystems are being reshaped by non-native species that can alter food webs, reduce biodiversity, and disrupt ecosystem functions. Despite the accelerating pace of invasive species introductions, we know little about the traits and conditions that allow invaders to succeed in new habitats. This talk will explore how marine invasive species are introduced, established, and spread, focusing on the Regal Demoiselle fish, which has recently spread to Flower Garden Banks National Marine Sanctuary.