Pathogen Discovery

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

Protocols for the Detection of Renibacterium salmoninarum in salmon

Viruses occur in many cultured and wild stocks of fish. William Batts collaborates with many government, state, tribal, and private research and diagnostic laboratories to aid in identification of these unknown replicating agents of uncertain pathogenicity. Typically, viruses can be replicated in a variety of fish cell lines and investigated at several temperatures to see if the cytopathic effect...

Fish Diseases - Ichthyobodo

There has been long history of disease outbreaks and economic losses in wild and farmed carp species due to SVCV. Formerly thought to be restricted to Europe and Asia, SVCV was detected for the first time in North America from diseased koi at a North Carolina fish farm in 2002, and there were extensive eradication efforts with 135,000 fish euthanized in addition to the ~15,000 that died from the...

At the request of the State of Washington, the Northwest Indian Fisheries Commission (NWIFC) and the US Fish and Wildlife Service (USFWS), the Western Fisheries Research Center has been providing technical advice and conducting research regarding the emergence of IHNV in the watersheds of coastal Washington State.

Fish Diseases - Emerging Viruses

Fish Diseases - Spring Viremia of Carp (SVC)

Fish Diseases - Bacterial Kidney Disease (BKD)

Species Studied - Yellow Perch ( Perca flavescens )

A collection of 77 photomicrographs compiled by the late William T. Yasutake, USGS Western Fisheries Research Center, Scientist Emeritus. Individual plates may be downloaded below.