Diane Elliott, Ph.D.
Diane participates in collaborative studies of infectious and noninfectious diseases in a variety of finfish species, utilizing techniques of microbiology, histopathology and molecular biology.
Ph.D. 1985. Fisheries, University of Washington, Seattle, WA
M.S. 1976. Fisheries, University of Washington, Seattle, WA
B.S. 1971. Fisheries, University of Washington, Seattle, WA
Development of improved sampling and testing methods for fish pathogen detection (including nonlethal sampling methods), understanding etiology and pathogenesis of fish diseases in wild and hatchery fish, development of methods for disease prevention and control.
2017 to Present - Scientist Emeritus
1986-2017 - Research Microbiologist, U.S. Geological Survey, Western Fisheries Research Center, Seattle WA
1984-1986 - Research Fishery Biologist, U.S. Fish and Wildlife Service, National Fisheries Research Center
1979-1981 - Research Fishery Biologist, National Marine Fisheries Service, NOAA, Northwest and Alaska Fisheries Center, Seattle, WA
1976-1979 - Research Fish Health Biologist, Tavolek Inc., Redmond, WA
1974-1976 - Fish Pathologist/Disease Inspector, Biometrics, Inc., Tacoma, WA
Honors, Awards, Recognition, Elected Memberships:
2015 - S.F. Snieszko Distinguished Service Award, American Fisheries Society Fish Health Section
2008 - USGS Star Award (for organization of a fish health training workshop in Mexico)
2008 - Journal of Aquatic Animal Health Most Significant Paper Award (senior author)
2007 - European Association of Fish Pathologists Outstanding Branch Officer Award
1991 - U.S. Fish and Wildlife Service Special Achievement Award (broodstock testing for BKD control)
1985 to present - Certified Fish Pathologist, American Fisheries Society Fish Health Section
Academic and Professional Service:
2010-2011 - President, American Fisheries Society Fish Health Section
2006 to Present - Journal Review Editor, Diseases of Aquatic Organisms
2004-2005 - Chair, Technical Standards Committee, American Fisheries Society Fish Health Section
2003 to Present - U.S. Branch Officer, European Association of Fish Pathologists U.S. Branch Officer
1995 to Present - Affiliate Associate Professor, University of Washington, Seattle, WA
1986-1995 - Affiliate Assistant Professor, University of Washington, Seattle, WA
American Fisheries Society (Fish Health Section, Fish Culture Section)
American Society for Microbiology
European Association of Fish Pathologists
New York Academy of Sciences
Sigma Xi (elected to full membership 1985)
In the News:
“AFS Fish Health Section hosts annual meeting, honors several of its top professionals,” Fish Farming News 2015, Issue 4.
Science and Products
Protocols for the Detection of Renibacterium salmoninarum in salmon
Non-lethal Detection of Skin Injuries in Juvenile Chinook Salmon Oncorhynchus tshawytscha by Fast Green FCF Dye
In fish, as in humans, an intact epidermis is critical to defense against entry of pathogens into the skin. Macroscopic examination of scale loss is the principal method of evaluating physical damage to juvenile salmonids out-migrating through hydroelectric dams in the Snake and Columbia Rivers, and in fish subjected to capture and handling procedures in locations such as hatcheries, fish...
Health and condition of endangered young-of-the-year Lost River and Shortnose suckers relative to water quality in Upper Klamath Lake, Oregon, 2014–2015
Most mortality of endangered Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, occurs within the first year of life. Juvenile suckers in Clear Lake Reservoir, California, survive longer and may even recruit to the spawning populations. In a previous (2013–2014) study, the health and...Burdick, Summer M.; Conway, Carla M.; Elliott, Diane G.; Hoy, Marshal S.; Dolan-Caret, Amari; Ostberg, Carl O.
Renibacterium salmoninarum: Chapter 21
No abstract available.Elliott, Diane G.
Detecting Renibacterium salmoninarum in wild brown trout by use of multiple organ samples and diagnostic methods
Renibacterium salmoninarum, the causative agent of salmonid bacterial kidney disease (BKD), is endemic in many wild trout species in northerly regions. The aim of the present study was to determine the optimal R. salmoninarum sampling/testing strategy for wild brown trout (Salmo trutta L.) populations in Iceland. Fish were netted in a lake and...Guomundsdottir, S.; Applegate, Lynn M.; Arnason, I.O.; Kristmundsson, A.; Purcell, Maureen K.; Elliott, Diane G.
In memoriam - William Toshio (Tosh) Yasutake, 1922-2016
William Toshio (Tosh) Yasutake, 1922-2016 passed away peacefully at home on December 12, 2016, at the age of 94. He is survived by Fumi, his wife of 66 years, as well as four children and six grandchildren. With his death, the fish health community has lost an outstanding scientist as well as a kind, unassuming, and wonderful human being. ...Elliott, Diane G.; Winton, James R.
Reconnecting fragmented sturgeon populations in North American rivers
The majority of large North American rivers are fragmented by dams that interrupt migrations of wide-ranging fishes like sturgeons. Reconnecting habitat is viewed as an important means of protecting sturgeon species in U.S. rivers because these species have lost between 5% and 60% of their historical ranges. Unfortunately, facilities designed to...Jager, Henriette; Parsley, Michael J.; Cech, Joseph J. Jr.; McLaughlin, R.L.; Forsythe, Patrick S.; Elliott, Robert S.
Survival, movement, and health of hatchery-raised juvenile Lost River suckers within a mesocosm in Upper Klamath Lake, Oregon
The recovery of endangered Lost River suckers (Deltistes luxatus) in Upper Klamath Lake is limited by poor juvenile survival and failure to recruit into the adult population. Poor water quality, degradation of rearing habitat, and toxic levels of microcystin are hypothesized to contribute to low juvenile survival. Studies of wild juvenile suckers...Hereford, Danielle M.; Burdick, Summer M.; Elliott, Diane G.; Dolan-Caret, Amari; Conway, Carla M.; Harris, Alta C.
Effects of temperature on Renibacterium salmoninarum infection and transmission potential in Chinook salmon, Oncorhynchus tshawytscha (Walbaum)
Renibacterium salmoninarum is a significant pathogen of salmonids and the causative agent of bacterial kidney disease (BKD). Water temperature affects the replication rate of pathogens and the function of the fish immune system to influence the progression of disease. In addition, rapid shifts in temperature may serve as stressors that reduce...Purcell, Maureen K.; McKibben, Constance L.; Pearman-Gillman, Schuyler; Elliott, Diane G.; Winton, James R.
Persistence of external signs in Pacific herring Clupea pallasii Valenciennes with ichthyophoniasis
The progression of external signs of Ichthyophonus infection in Pacific herring Clupea pallasii Valenciennes was highly variable and asynchronous after intraperitoneal injection with pure parasite preparations; however, external signs generally persisted through the end of the study (429 days post-exposure). Observed signs included papules,...Hart, Lucas M.; Conway, Carla M.; Elliott, Diane G.; Hershberger, Paul K.
Infecting Pacific Herring with Ichthyophonus sp. in the laboratory
The protistan parasite Ichthyophonus sp. occurs in coastal populations of Pacific Herring Clupea pallasii throughout the northeast Pacific region, but the route(s) by which these planktivorous fish become infected is unknown. Several methods for establishing Ichthyophonus infections in laboratory challenges were examined. Infections were most...Hershberger, Paul; Hart, Lucas; Mackenzie, Ashley; Yanney, M.L.; Conway, Carla M.; Elliott, Diane G.
Health and condition of endangered juvenile Lost River and shortnose suckers relative to water quality and fish assemblages in Upper Klamath Lake, Oregon, and Clear Lake Reservoir, California
Executive Summary Most mortality of endangered Lost River (Deltistes luxatus) and shortnose (Chasmistes brevirostris) suckers in Upper Klamath Lake, Oregon, appears to occur within the first year of life. However, juvenile suckers in Clear Lake Reservoir, California, appear to survive longer and may even recruit to the spawning populations. Our...Burdick, Summer M.; Elliott, Diane G.; Ostberg, Carl O.; Conway, Carla M.; Dolan-Caret, Amari; Hoy, Marshal S.; Feltz, Kevin P.; Echols, Kathy R.
Testing of candidate non-lethal sampling methods for detection of Renibacterium salmoninarum in juvenile Chinook salmon Oncorhynchus tshawytscha
Non-lethal pathogen testing can be a useful tool for fish disease research and management. Our research objectives were to determine if (1) fin clips, gill snips, surface mucus scrapings, blood draws, or kidney biopsies could be obtained non-lethally from 3 to 15 g Chinook salmon Oncorhynchus tshawytscha, (2) non-lethal samples could...Elliott, Diane G.; McKibben, Constance L.; Conway, Carla M.; Purcell, Maureen K.; Chase, Dorothy M.; Applegate, Lynn M.
Detection of Ichthyophonus by chromogenic in situ hybridization
Ichthyophonus hoferi (Plehn & Mulsow 1911) is a protistan parasite in the class Mesomycetozoea that infects a large range of marine and freshwater fish (Mendoza, Taylor & Ajello 2002; McVicar 2011). The broad host and geographic range, which includes both fresh and marine waters of the Northern and Southern Hemispheres...Conway, Carla M.; Purcell, Maureen K.; Elliott, Diane G.; Hershberger, Paul K.
Figure 1. Appearance of descaling site exposed to fast green FCF dye six hours after intentional descaling injury, showing loss of scales and presence of fast green staining. Areas of unintentional integumental injury are also stained (arrows).
Related image Figure 2.
Figure 2. Scanning electron micrograph of descaling area delimited by box in Figure 1 showing epidermal disruption, empty scale pockets and an exposed scale with visible concentric ridges (upper right). Scale bar = 500 µm.
Figure 3. Appearance of descaling site exposed to fast green FCF dye 96 hours after intentional descaling injury, showing lack of scales, presence of fast green staining in areas of epidermal disruption and absence of staining in areas where migrating epidermal cells have closed the wound.
Related image Figure 4.
Figure 4. Scanning electron micrograph of descaling area delimited by box in Figure 3 showing epidermal disruption (arrows), empty scale pockets and restoration of epidermal integrity (asterisk). An exposed scale with visible concentric ridges is visible at the lower center. Scale bar = 500 µm.
In Memoriam — William Toshio Yasutake, 1922–2016
WFRC’s Bacterial Kidney Disease Research and Its Relation to the Great Lakes Fisheries
Histopathology at WFRC: New Applications for an Old Discipline