Fish

Ichthyophonus spp. are perhaps the most economically and ecologically important parasites of wild marine fish in the world.

Researchers at that MMFS are experimentally determining the impacts of high PCB body burdens on the immunocompetency and disease susceptibility of Pacific herring.

Researchers at the MMFS are studying the immediate and delayed effects of petroleum hydrocarbon exposures to Pacific herring.

Low early marine survival rates of Puget Sound steelhead ( Oncorhynchus mykiss), the state fish of Washington, have contributed to its dramatic population decline and current listing as a “Threatened Species” under the Endangered Species Act. Determining the cause(s) of this elevated mortality remains a primary objective of the Salish Sea Marine Survival Project, a large US / Canada effort...

In the decades following the Exxon Valdez Oil Spill (EVOS), it has become increasingly apparent that oil can be toxic at extremely low concentrations to developing fish embryos including herring, where some toxic phenotypes may be apparent during embryogenesis, but some are delayed until later in life. Therefore, acute and lingering oil may act as an insidious selective force within populations...

Using an approach that involves a combination of field- and laboratory-based studies, we are investigating fish health factors that may be contributing to the failed recovery of Pacific herring populations in Prince William Sound, AK. Field studies are providing infection and disease prevalence data to inform the population models, serological data that indicate the prior exposure history and...

Fish Parasite - Nanophyetus salmincola

Fish Parasite - Ichthyophonus hoferi

Fish Virus - Erythrocytic Necrosis Virus (ENV)

Fish Virus - Viral Hemorrhagic Septicemia Virus (VHSV)

Species Studied - Pacific Herring ( Clupea pallasii)

Species Studied - Pacific Halibut ( Hippoglossus stenolepis)