Publications
Below is a list of available Fish Health Program peer reviewed and published science.
Filter Total Items: 323
Effect of temperature on survival of Lost River Suckers with a natural infection of Ichthyobodo spp.
To compensate for low natural survival of endangered Lost River Suckers Deltistes luxatus, the U.S. Fish and Wildlife Service and the Klamath Tribes have initiated captive rearing programs. We conducted laboratory experiments intended to determine the temperature for optimum growth of juvenile Lost River Suckers; however, due to an unanticipated infection with Ichthyobodo spp., we instead estimate
Authors
Barbara A. Martin, Summer M. Burdick, Maureen K. Purcell, Rachel L. Powers
Virulence and infectivity of UC, MD and L strains of infectious hematopoietic necrosis virus (IHNV) in four populations of Columbia River Basin Chinook salmon
Infectious Hematopoietic Necrosis Virus (IHNV) infects juvenile salmonid fish in conservation hatcheries and aquaculture facilities, and in some cases, causes lethal disease. This study assesses intra-specific variation in the IHNV susceptibility of Chinook salmon (Oncorhynchus tshawytscha) in the Columbia River Basin (CRB), in the northwestern United States. The virulence and infectivity of IHNV
Authors
Daniel G. Hernandez, William E. Brown, Kerry A. Naish, Gael Kurath
Exploration of the 2016 Yellowstone River fish kill and proliferative kidney disease in wild fish populations
Proliferative kidney disease (PKD) is an emerging disease that recently resulted in a large mortality event of salmonids in the Yellowstone River (Montana, USA). Total PKD fish mortalities in the Yellowstone River were estimated in the tens of thousands, which resulted in a multi‐week river closure and an estimated economic loss of US$500,000. This event shocked scientists, managers, and the publi
Authors
Patrick Ross Hutchins, Adam Sepulveda, Hanna Hartikainen, Ken D. Staigmiller, Scott T. Opitz, Renee M. Yamamoto, Amberly Huttinger, Rick J. Cordes, Tammy Weiss, Lacey R. Hopper, Maureen K. Purcell, Beth Okamura
Analytical validation of two RT-qPCR tests and detection of spring viremia of carp virus (SVCV) in persistently infected koi Cyprinus carpio
Spring viremia of carp virus (SVCV) ia a carp sprivivirus and a member of the genus Sprivivirus within the family Rhabdoviridae. The virus is the etiological agent of spring viremia of carp, a disease of cyprinid species including koi Cyprinus carpio L. and notifiable to the World Organisation for Animal Health. The goal of this study was to explore hypotheses regarding inter-genogroup (Ia to Id)
Authors
Sharon C Clouthier, Tamara Schroeder, Emma K Bueren, Eric D. Anderson, Eveline Emmenegger
Fish Rhabdoviruses (Rhabdoviridae)
The family Rhabdoviridae currently has 18 genera accepted by the International Committee for Virus Taxonomy (ICTV), and three of those genera contain fish rhabdoviruses. In the genera Novirhabdovirus, Sprivivirus, and Perhabdovirus all viruses infect fish hosts, and there are no fish viruses in any of the other 15 rhabdovirus genera. In the overall phylogeny of the Rhabdoviridae the three fish vir
Authors
Gael Kurath, David B. Stone
Neither microcystin, nor nodularin, nor cylindrospermopsin directly interact with human toll-like receptors
Various stressors including temperature, environmental chemicals, and toxins can have profound impacts on immunity to pathogens. Increased eutrophication near rivers and lakes coupled with climate change are predicted to lead to increased algal blooms. Currently, the effects of cyanobacterial toxins on disease resistance in mammals is a largely unexplored area of research. Recent studies have sugg
Authors
John Hansen, Keith Loftin, Zachary Laughrey, Ondrei Adamovsky
Novel diagnostic tests for the putative agent of bacterial gill disease in Pacific razor clams (Siliqua patula)
Nuclear inclusion X (NIX) is a gamma proteobacteria that infects the nuclei of gill epithelial cells in Pacific razor clams. NIX has been associated with clam die-offs in coastal Washington. A quantitative PCR (qPCR) assay was developed to detect NIX in Pacific razor clams, and assay specificity was confirmed by chromogenic in situ hybridization (CISH). Both tests were applied to evaluate NIX infe
Authors
Brooke A Travis, William N. Batts, Maya Groner, Paul Hershberger, Steven C. Fradkin, Carla M. Conway, Linda Park, Maureen K. Purcell
Anadromous coastal cutthroat trout Oncorhynchus clarkii clarkii as a host for Argulus pugettensis (Crustacea, Branchiura): Parasite prevalence, intensity and distribution
Coastal cutthroat trout [Oncorhynchus clarkii clarkii (Richardson, 1836)] from the marine waters of Puget Sound, WA, was documented as a new host for the ectoparasite Argulus pugettensis (Dana, 1852). The prevalence of A. pugettensis was 66% (49 of 74) on cutthroat trout and 0% (0 of 55) on coho salmon [O. kisutch (Walbaum, 1792)] collected during the winter of 2017/2018. Infestations occurred mos
Authors
James P Losee, Simon R M Jones, Caitlin A E McKinstry, William N. Batts, Paul Hershberger
Pacific herring Clupea pallasii are not susceptible to vibriosis from Vibrio anguillarum or V. ordalii under laboratory conditions
The ubiquity of Vibrio spp. throughout the coastal marine waters of the Pacific Northwest of North America raises questions about the susceptibility of native marine fishes, including Pacific herring (Clupea pallasii). Early reports of Vibriolike disease (Rucker et al., 1954; Walford, 1958) and Vibrio sp. isolations (Pacha & Kiehn, 1969) in Pacific herring remain questionable because both occurred
Authors
Paul Hershberger, M.E.T Stinson, Brenda L Hall, Ashley MacKenzie, Jacob L. Gregg, William August Richards, James Winton
Disease in Central Valley salmon: Status and lessons from other systems
Chinook Salmon (Oncorhynchus tshawytscha) are increasingly vulnerable to anthropogenic activities and climate change, especially at their most southern species range in California’s Central Valley. There is considerable interest in understanding stressors that contribute to population decline and in identifying management actions that reduce the impacts of those stressors. Along the west coast of
Authors
Brendan M Lehman, Rachel C. Johnson, Mark Adkison, Oliver T Burgess, Richard E Connon, Nann A. Fangue, Scott J Foott, Sascha L Hallett, Beatriz Martínez-López, Kristina M. Miller, Maureen K. Purcell, Nicholas A. Som, Pablo Valdes-Donoso, Alison L Collins
Genomes reveal genetic diversity of Piscine orthoreovirus in farmed and free-ranging salmonids from Canada and USA
Piscine orthoreovirus (PRV-1) is a segmented RNA virus which is commonly found in salmonids in the Atlantic and Pacific Oceans. PRV-1 causes the Heart and Skeletal Muscle Inflammation (HSMI) disease in Atlantic salmon and is associated with several other disease conditions. Previous phylogenetic studies of genome segment 1 (S1) identified four main genogroups of PRV-1 (S1 genogroups I – IV). The g
Authors
Ahmed Siah, B. R. Breyta, K. I. Warheit, N Gagne, Maureen K. Purcell, Diane B. Morrison, J. F. F. Powell, S. C. Johnson
Genomic architecture and repertoire of the rainbow trout immunoglobulin light chain genes
The genomic loci encoding the four immunoglobulin light chains (IgL1, IgL2, IgL3, and IgL4) in the Swanson trout genome assembly were annotated in order to provide a measurement of the potential IgL repertoire. IgL1 and IgL3 gene segments are co-localized on chromosomes 21, 18, 15, and 7 while IgL2 and IgL4 were found on chromosomes 13 and 17, respectively. In total, 48 constant (CL), 87 variable
Authors
Katherine Rego, John Hansen, Erin S Bromage