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MARI/CCPO Seminar Series


Host-Pathogen Interactions in a Changing Ocean; Lessons from Oysters and Sea Stars

Colleen Burge, Institute of Marine and Environmental Technology, University of Maryland Baltimore County

Disease is a natural part of healthy marine ecosystems; however, the number and severity of marine diseases is increasing and has been linked to climate warming and other anthropogenic factors. We often have a poor understanding of causative agents and infection dynamics. This baseline information is critical to assess synergisms between human drivers and disease outbreaks, and ultimately better manage disease outbreaks. Disease-associated mass mortality outbreaks have the capacity to alter both natural and aquaculture-based systems. I will emphasize two host-pathogen systems: Ostreid herpesvirus 1 infections in Pacific oysters and virus-associated mortalities (candidate: Densovirus) of sea stars from sea star wasting disease (SSWD). I will discuss aspects of each host-pathogen relationship including pathogen discovery, diagnostics, and spread, as well as host immune response and physiology.