A5022523202- Aquaculture disease management and microbiota
- Aquaculture Nutrition and Growth
- Animal Virus Infections Studies
- Microbial infections and disease research
- Animal Disease Management and Epidemiology
- Fish Ecology and Management Studies
- Identification and Quantification in Food
- Myxozoan Parasites in Aquatic Species
- Fish Biology and Ecology Studies
- Mycobacterium research and diagnosis
- Mosquito-borne diseases and control
- Microbial Metabolism and Applications
- Viral gastroenteritis research and epidemiology
- Pediatric Hepatobiliary Diseases and Treatments
- Respiratory viral infections research
- Genomics and Phylogenetic Studies
- Plant Virus Research Studies
- HIV Research and Treatment
- Bacteriophages and microbial interactions
- Amoebic Infections and Treatments
- Physiological and biochemical adaptations
- Bacterial Identification and Susceptibility Testing
- Parasite Biology and Host Interactions
- Viral Infections and Vectors
- Liver Disease Diagnosis and Treatment
Washington State University
2015-2025
University of Veterinary Medicine
2009
United States Department of Agriculture
2009
Agricultural Research Service
2009
ABSTRACT As global aquaculture fish production continues to expand, an improved understanding of how environmental factors interact in health and is needed. Significant advances have been made toward economical alternatives costly fishmeal-based diets, such as grain-based formulations, defining the effect rearing density on production. Little research, however, has examined effects fishmeal- diets combination with alterations density. Moreover, it unknown whether interactions between diet...
Highly pathogenic avian influenza (HPAI) viruses cross species barriers and have the potential to cause pandemics. In North America, HPAI A(H5N1) related goose/Guangdong 2.3.4.4b hemagglutinin phylogenetic clade infected wild birds, poultry, mammals. Our genomic analysis epidemiological investigation showed that a reassortment event in bird populations preceded single bird–to-cattle transmission episode. The movement of asymptomatic or presymptomatic cattle has likely played role spread...
DAO Diseases of Aquatic Organisms Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout JournalEditorsSpecials 78:217-223 (2008) - DOI: https://doi.org/10.3354/dao01869 Neoparamoeba perurans is a cosmopolitan aetiological agent amoebic gill disease Neil D. Young1,*, Iva Dyková2, Kevin Snekvik3, Barbara F. Nowak1, Richard N. Morrison1 1School Aquaculture, Tasmanian Aquaculture and Fisheries Institute, University Tasmania...
Abstract We hypothesized that low concentrations of H 2 O could be generated through the electrochemical conversion oxygen by applying an electric potential to a conductive scaffold and produce low, but constant, concentration would sufficient destroy biofilms. To test our hypothesis we used multidrug-resistant Acinetobacter baumannii strain, because this species is often implicated in difficult-to-treat biofilm infections. carbon fabric as material (“e-scaffold”). In vitro experiments...
A controlled six-month study was conducted in six replicated water recirculation aquaculture systems (WRAS) to assess fish health indicators relation high feeding/low flushing conditions. Juvenile rainbow trout (Oncorhynchus mykiss) were stocked identical WRAS (1000 per system), and maintained over the period between 25 kg/m3 (minimum) 80 (maximum) densities. Three received a relatively makeup exchange rate (2.6%), while three only 0.26% exchange; mean feed loadings of 0.39 4.1 kg/day m3/day...
Chronic exposure to elevated levels of dissolved carbon dioxide (CO2) has been linked reduced growth, physiological disturbances and negative health outcomes in intensively reared fish. Although pumping a degassing tower can lower concentrations CO2 water recirculation aquaculture systems (WRAS), be significant cost for operators. A 6-month trial was conducted compare the effects high (24 ± 1 mg/L; partial pressure = 8.79 mm Hg) low (8 2.91 on rainbow trout Oncorhynchus mykiss performance...
Abstract Background The One Health approach aims to balance and optimize the health of humans, animals, ecosystems, recognizing that shared outcomes are interdependent. A disease surveillance, control, prevention requires infrastructure for coordinating, collecting, integrating, analyzing data across sectors, incorporating human, animal, environmental surveillance data, as well pathogen genomic data. However, unlike interoperability problems faced within a single organization or sector,...
A sustained outbreak of H5N1 influenza virus among wild fowl and domestic livestock has caused more than 70 zoonotic infections in humans the United States, including one death. The Centers for Disease Control Prevention recommended rapid H5 subtyping all hospitalized cases with infection to enable prompt initiation antiviral treatment, as well prevention implementation public health measures control spread. To address these needs, we developed a multiplex RT-qPCR assay subtype nasal,...
The objective of this study was to determine the long-term effects ambient unionized ammonia nitrogen (NH3-N) combined with different feeding regimes on Atlantic salmon Salmo salar L parr growth, welfare and smoltification. Previous studies stage have mostly focused acute exposure, or at low temperatures. were exposed for 105 days (at 12°C, pH 6.8) four sublethal concentrations ranging from 0.1 35 μg L−1 NH3-N (0.1–25 mg TAN) two levels: full feed strength (+20% overfeeding) 1/3 strength....
A controlled four-month trial was conducted to compare the effects of ozonation (oxidation–reduction potential setpoint = 250 mV) versus no on rainbow trout Oncorhynchus mykiss performance, health, and welfare in replicated WRAS operated at low exchange rates (0.26% total recirculating flow) high feed loadings (3.9 kg/day per m3/day makeup flow). Rainbow 74 ± 2 g (mean standard error) size were randomly stocked into six 9.5 m3 (1000 fish system). Ozonation three treatment began two months...
Many enveloped viruses cause devastating disease in aquaculture, resulting significant economic impact. LJ001 is a broad-spectrum antiviral compound that inhibits virus infections by specifically targeting phospholipids the lipid bilayer via production of singlet oxygen (1O2). This stabilizes positive curvature and decreases membrane fluidity, which virus-cell fusion during viral entry. Based on data from previous mammalian studies requirement light for activation LJ001, we hypothesized may...
We performed a diagnostic disease investigation on cohort of coho salmon ( Oncorhynchus kisutch) fingerlings in Alaska exhibiting anorexia, gaping mouths, anemia, and increased mortality. Histologic examination revealed mild-to-severe myocardial degeneration lymphohistiocytic neutrophilic myocarditis, moderate splenic histiocytosis, mild renal histiocytosis. Piscine orthoreoviruses 1 3 were not detected by molecular methods, no other viruses could be cultured common fish cell lines. De novo...
Strawberry disease (SD) in the USA is a skin disorder of unknown etiology that occurs rainbow trout Oncorhynchus mykiss and characterized by bright red inflammatory lesions. To identify candidate bacterial agent responsible for SD, we constructed 16S rDNA libraries from 7 SD lesion samples 2 apparently healthy SD-affected fish. A sequence highly similar to members order Rickettsiales was present 3 at 1%, 32% 54% prevalence, but this not found either tissue library. Based on phylogenetic...
Abstract Strawberry disease (SD) is an inflammatory skin disorder in rainbow trout, Oncorhynchus mykiss (Walbaum). The aetiology of SD unknown although the 16S rDNA sequence a Rickettsia ‐like organism (RLO) has been associated with lesions using nested PCR assay. In this study, we developed Taqman quantitative assay (qPCR) that targeted RLO to examine distribution relative lesion status. We compared 18 samples from 13 fish representing high or low severity as judged by gross examination....
Abstract Farmed and wild salmonids are affected by a variety of skin conditions, some which have significant economic welfare implications. In many cases, the causes not well understood, one example is cold water strawberry disease rainbow trout, also called red mark syndrome, has been recorded in UK since 2003. To date, there no internationally agreed methods for describing these caused confusion farmers health professionals, who often unclear as to whether they dealing with new or...
A freshwater angelfish ( Pterophyllum scalare) hatchery experienced variable levels of emaciation, poor growth rates, swollen coelomic cavities, anorexia, listlessness, and increased mortality within their fish. Multiple chemotherapeutic trials had been attempted without success. In affected fish, large numbers protozoa were identified both histologically ultrastructurally associated with the gastric mucosa. The youngest cohort parasitized fish was most severely demonstrated greatest...
Bovine viral diarrhea virus (BVDV) is an emerging infectious pathogen of concern to the alpaca industry. A 4-month-old, intact, male cria was diagnosed as persistently infected with BVDV on basis repeated positive antemortem polymerase chain reaction (PCR) and isolation (VI) assays negative serologic titers BVDV. Immunohistochemistry, real-time reverse transcription PCR, VI performed tissues collected at necropsy demonstrated disseminated BVDV-1b infection. Virus detected in multiple...
ABCB4 functions as a phosphatidylcholine translocater, flipping across hepatocyte canalicular membranes into biliary canaliculi. In people, gene mutations are associated with several disease syndromes including intrahepatic cholestasis of pregnancy, progressive familial (type 3), primary cirrhosis, and cholelithiasis. Hepatobiliary disease, specifically gallbladder mucocele formation, has been recognized increased frequency in dogs during the past decade. Because Shetland Sheepdogs...
Studies were undertaken to determine whether anti-ovine progressive pneumonia virus (OPPV) antibody responses in serum or OPP provirus levels peripheral blood associate with the degree of histologically measured tissue lesions naturally OPPV-infected sheep. Sections formalin-fixed, paraffin-embedded, and hematoxylin- eosin-stained lung, mammary gland, carpal synovial membrane, brain tissues from 11 ewes (mean age 8.6 years) 5 OPPV-uninfected 6 evaluated for lesion severity. Ovine (OPP)...
Finding suitable alternative protein sources for diets of carnivorous fish species remains a major concern sustainable aquaculture. Through genetic selection, we created strain rainbow trout that outperforms parental lines in utilizing an all-plant diet and does not develop enteritis the distal intestine, as is typical with salmonids on long-term plant protein-based feeds. By incorporating this into functional analyses, set out to determine which genes are critical utilization absence gut...
Abstract Flavobacterium psychrophilum is the aetiological agent of rainbow trout fry syndrome and bacterial cold water disease. This study examined genetic diversity F. isolates retrieved from multiple epizootics at trout, Oncorhynchus mykiss , rearing facilities spawning coho salmon, O. kisutch . A total 139 were confirmed as by PCR assay further typed using pulsed‐field gel electrophoresis (PFGE). Multiple three proximally located numerically dominated PFGE profiles, which accounted for...
Rabbit hemorrhagic disease virus 2 (RHDV2) causes an often-fatal of rabbits that has resulted in outbreaks rabbitries Europe, Africa, Australia, and Asia. RHD historically been characterized as a foreign animal the United States. In July 2019, RHDV2 was detected on Orcas Island along northwestern coast Washington (WA) State following reports deaths multiple feral domestic rabbits. We document highlight here unique clinical presentation gross histologic lesions observed this recent WA...