A5085553775- Aquaculture disease management and microbiota
- Parasite Biology and Host Interactions
- Invertebrate Immune Response Mechanisms
- Vibrio bacteria research studies
- Aquaculture Nutrition and Growth
- Myxozoan Parasites in Aquatic Species
- Pharmaceutical and Antibiotic Environmental Impacts
- Reproductive biology and impacts on aquatic species
- Fish Biology and Ecology Studies
- Identification and Quantification in Food
- Environmental Toxicology and Ecotoxicology
- Ginger and Zingiberaceae research
- Phytochemical compounds biological activities
- Toxic Organic Pollutants Impact
- Trace Elements in Health
- Echinoderm biology and ecology
- Iron Metabolism and Disorders
- Bacteriophages and microbial interactions
- Meat and Animal Product Quality
- Microbial infections and disease research
- Fish biology, ecology, and behavior
- Phytochemistry and Bioactive Compounds
- Insect symbiosis and bacterial influences
- Genomics and Phylogenetic Studies
- Parasitic Infections and Diagnostics
Aquatic Animal Health Research Laboratory
2011-2020
United States Department of Agriculture
2010-2020
Agricultural Research Service
2011-2020
Anhui Provincial Center for Disease Control and Prevention
2013
Auburn University
1990-2005
Purdue University West Lafayette
2001
North Carolina State University
2001
University of Georgia
2001
Louisiana State University
2001
Mississippi State University
2001
Motile Aeromonas septicemia (MAS), caused by virulent clonal isolates of hydrophila (vAh), is emerging as a major disease in catfish (Ictalurus punctatus) aquaculture the Southeastern United States. Predisposing conditions leading to vAh infection were however largely unknown. The objective this study was investigate factors that predispose and establish waterborne challenge model mimics natural occurrence MAS. Results indicated wounding on fish body surface one key predisposed via route....
Lineages of hypervirulent Aeromonas hydrophila (vAh) are the cause persistent outbreaks motile septicemia in warm-water fishes worldwide. Over last decade, People's Republic China and United States, this virulent lineage A. has resulted annual losses millions tons farmed carp catfish. Multiple lines evidence indicate that US catfish Asian isolates affiliated with sequence type 251 (ST251) share a recent common ancestor. To address genomic context for putative intercontinental transfer...
Ichthyophthirius multifiliis (Ich), a fish ectoparasite, comprises an important challenge in the aquaculture industry. In this study, steroidal glycoside, cynatratoside-C, isolated from Cynanchum atratum roots by bioassay-guided fractionation was used to treat I. multifiliis. The cynatratoside-C at 0.25 mg/L demonstrated 100% mortality of vitro after 5 h exposure. median effective concentration (EC50) nonencysted tomonts 0.083 mg/L. addition, concentrations 0.125 and 0.06 could completely...
Ichthyophthirius multifiliis (Ich) is an important ciliate that parasitizes gills and skin of freshwater fish causes massive mortality. In this study, two flavonoids (kuwanons G O) with anti-Ich activity were isolated by bioassay-guided fractionation from the root bark Morus alba, plant for sericulture. The chemical structures kuwanons O elucidated spectroscopic analyses. Kuwanons caused 100% mortality I. theronts at concentration 2 mg/L possessed a median effective (EC50) 0.8 ± 0.04 against...
The aim of this study was to understand the pathogenesis motile aeromonas septicemia caused by an emergent, high virulent Aeromonas hydrophila (vAh) in channel catfish, Ictalurus punctatus. Adipose fin clipped catfish were challenged with vAh using a waterborne challenge method, and distribution over time course detected quantified real-time polymerase chain reaction. results showed that 77.8% fish died within 48 h post mean day death 1.5 days. At 2 challenge, (inferred from genomic DNA...
This study determined whether cutaneous antibodies were present in the excised skin of channel catfish, Ictalurus punctatus Rafinesque, immune to Ichthyophthirius multifiliis Fouquet (Ich). Theronts immobilized on or near from fish. The survival theronts was significantly reduced after exposure for 8 h culture Culture fluids fish with a peak immobilization titre at 24 post‐exposure. Immobility fluid removed immunoabsorption theronts. Indirect immunofluorescent staining treated revealed...
This study evaluated the growth and immune response of gibel carp (Carassius auratus gibelio) cultured under no feed addition biofloc technology (BFT) system at different total suspended solid (TSS) concentrations (10, 300, 600, 800 1,000 mg/L for group BF0-NF, BF300-NF, BF600-NF, BF800-NF BF1000-NF) 30 days. The results demonstrated that bioflocs contained rich nutrients, eaten showed higher weight gain, specific survival. Digestive enzyme activities such as pepsin amylase increased...
Abstract Ferritins are the major iron storage protein in cytoplasm of cells, responsible for regulating levels intracellular iron. Ferritin genes widely distributed both prokaryotes and eukaryotes. In mammals, ferritin molecules composed heavy‐ (H) light‐ (L) chain subunits; amphibian genomes contain three ferritin‐type (H; middle, M; L subunits); teleost to date H M subunits. The objective this study was characterize gene channel catfish ( Ictalurus punctatus ) determine its genomic...