USGS fish disease research is focused on developing advanced tools for rapid disease detection and control. USGS scientists are improving our understanding of the factors controlling the epidemiology of aquatic animal diseases and the impact of disease on wild fish populations. Our scientists are also investigating the effects of warming waters, drought, and invasive species on fish disease dynamics.
Infectious Hematopoietic Necrosis virus research — Western Fisheries Research Center
Bacterial Kidney Disease Research and Its Relation to the Great Lakes Fisheries — Western Fisheries Research Center
DNA Vaccine against North American Spring Viremia of Carp Virus (SVCV) — USGS Technology Transfer
Fish Health Branch — Leetown Science Center
The MEAP-IHNV database and MEAP-VHSV database contain thousands of records of background information and genetic sequencing data for individual isolates of the fish viruses, Infectious hematopoietic necrosis virus (IHNV) and Viral hemorrhagic septicemia virus (VHSV).
USGS has released a new fact sheet detailing how USGS research is using science-based solutions for aquatic health and disease mitigation.
A virus that can cause disease in largemouth bass has now been identified in otherwise apparently healthy northern snakeheads taken from two Potomac River tributaries in Virginia, the U.S. Geological Survey announced today...
The AquaPathogen X database is a template for recording information on individual isolates of aquatic pathogens. The database is available for download from the USGS Western Fisheries Research Center website (http://wfrc.usgs.gov).
Fish Parasite Ecology Software Tool (Fish PEST) is a web tool aimed to model the distribution of parasites on fish hosts. Fish PEST integrates parasitological data with ecological, biogeographic and phylogenetic information of fish hosts.
Healthy aquatic ecosystems are home to a diversity of plants, invertebrates, fish and wildlife. Aquatic animal populations face unprecedented threats to their health and survival from climate change, water shortages, habitat alteration, invasive species and environmental contaminants. These environmental stressors can directly impact the prevalence and severity of disease in...
USGS Fact Sheet 2016-3091, 2 p.
The white sucker Catostomus commersonii is a freshwater teleost often utilized as a resident sentinel. Here, we sequenced the full genome of a hepatitis B-like virus that infects white suckers from the Great Lakes Region of the USA. Dideoxysequencing confirmed the white sucker hepatitis B virus (WSHBV) has a circular genome (3542 bp) with the prototypical codon organization of hepadnaviruses. Electron microscopy demonstrated that complete virions of approximately 40 nm were present in the plasma of infected fish.
Journal of Virology, v. 89, November 2015
The protistan parasite Ichthyophonus occurred in populations of Pacific herring Clupea pallasii Valenciennes throughout coastal areas of the NE Pacific, ranging from Puget Sound, WA north to the Gulf of Alaska, AK. Infection prevalence in local Pacific herring stocks varied seasonally and annually, and a general pattern of increasing prevalence with host size and/or age persisted throughout the NE Pacific. An exception to this zoographic pattern occurred among a group of juvenile, age 1+ year Pacific herring from Cordova Harbor, AK in June 2010, which demonstrated an unusually high infection prevalence of 35%. Reasons for this anomaly were hypothesized to involve anthropogenic influences that resulted in locally elevated infection pressures.
Journal of Fish Diseases, March 2015
Seafood is a growing part of the economy, but its economic value is diminished by marine diseases. Infectious diseases are common in the ocean, and here we tabulate 67 examples that can reduce commercial species' growth and survivorship or decrease seafood quality. These impacts seem most problematic in the stressful and crowded conditions of aquaculture, which increasingly dominates seafood production as wild fishery production plateaus.
Annual Review of Marine Science, v. 7, January 2015