Read by QxMD icon Read

Journal of Aquatic Animal Health

David R Burbank, Tyson R Fehringer, Luciano V Chiaramonte
Nonlethal sampling techniques have previously been evaluated for detection of a variety of viral salmonid pathogens. However, many of these studies have used molecular assays in lieu of widely accepted cell culture techniques to evaluate the sampled tissues. Samples were collected from female steelhead Oncorhynchus mykiss broodstock using three potential nonlethal sampling methods (mucus/skin scrape, pectoral fin clip, and gill tissue biopsy) and evaluated for the presence of infectious hematopoietic necrosis virus (IHNV) via cell culture techniques...
June 2017: Journal of Aquatic Animal Health
(no author information available yet)
No abstract text is available yet for this article.
March 2017: Journal of Aquatic Animal Health
Elena V Millard, Ashley M Bourke, Scott E LaPatra, Travis O Brenden, Scott D Fitzgerald, Mohamed Faisal
A DNA vaccine containing the glycoprotein (G) gene of the North American viral hemorrhagic septicemia virus (VHSV) genotype IVb was developed to evaluate the immune response of fish following vaccination and evaluate its efficacy in protecting a susceptible species, the Muskellunge Esox masquinongy, against VHSV-IVb challenge. Seven weeks (539 degree-days) following vaccination with 10 μg of either pVHSivb-G or a control plasmid, Muskellunge were challenged by immersion with 10(5) plaque-forming units (pfu)/mL of VHSV-IVb...
March 2017: Journal of Aquatic Animal Health
Diane Elliott, Jim Winton
No abstract text is available yet for this article.
March 2017: Journal of Aquatic Animal Health
Yijia Deng, Yaling Wang, Xiaodi Zhang, Lijun Sun, Chaojin Wu, Qi Shi, Rundong Wang, Xiaodong Sun, Siyuan Bi, Ravi Gooneratne
Modified-masked T-2 toxin (mT-2) formed during metabolism in edible aquatic animals may go undetected by traditional analytical methods, thereby underestimating T-2 toxicity. The effects of T-2 on growth and antioxidant capacity and histopathological changes in the hepatopancreas were studied in Pacific white shrimp Litopenaeus vannamei exposed for 20 d to 0, 0.5, 1.2, 2.4, 4.8, and 12.2 mg/kg of T-2 in their feed. The concentration of mT-2 in the hepatopancreas was detected by liquid chromatography-tandem mass spectrophotometry before and after trifluoroacetic acid (TFA) treatment that converted mT-2 to free T-2...
March 2017: Journal of Aquatic Animal Health
Tamrin M Lal, Motohiko Sano, Julian Ransangan
The causative agent responsible for vibriosis in tropical fish aquaculture, Vibrio harveyi, has become a major bacterial pathogen. Studies suggest that this bacterium has developed resistance to antibiotics commonly used in aquaculture. In view of this situation and the requirement for the proposed postantibiotic era, bacteriophage therapy seems to be a promising control strategy for fish vibriosis. In this study, a lytic Vibrio phage VhKM4 belonging to a member of large, marine Myoviridae was successfully isolated...
March 2017: Journal of Aquatic Animal Health
Eman Zahran, Elsayed E Hafez, Ferdaus Mohd Altaf Hossain, Mohamed Elhadidy, Adel A Shaheen
Saprolegniosis is a fungal infection that leads to huge economic losses in tilapia aquaculture. Saprolegnia spp. are usually implicated as the etiological agents, but their identification is sometimes troublesome and confusing. In this study, two Saprolegnia strains (ManS22 and ManS33) were isolated from Nile Tilapia Oreochromis niloticus suffering from saprolegniosis. Both isolates were characterized morphologically and from internal transcribed spacer (ITS) sequence data. Additionally, both strains were tested for pathogenicity, and they were highly pathogenic and caused cumulative mortalities of 88...
March 2017: Journal of Aquatic Animal Health
Elizabeth Throckmorton, Travis Brenden, Amber K Peters, Tammy J Newcomb, Gary E Whelan, Mohamed Faisal
Viral hemorrhagic septicemia virus genotype IVb (VHSV IVb) has caused major, sporadic fish die-offs in the Laurentian Great Lakes region of North America since 2005. Presently, factors affecting VHSV IVb persistence in enzootic systems are not well understood. Even with annual surveillance, the virus can go undetected for several years after an outbreak before again re-emerging, which suggests that the virus is maintained in the system either below detectable levels or in untested reservoirs. The aim of this study was to identify potential reservoirs of VHSV IVb in Budd Lake, Michigan; VHSV IVb was first detected in Budd Lake in 2007 but remained undetected until 2011...
March 2017: Journal of Aquatic Animal Health
Diana Jaramillo, Edmund J Peeler, Emilie Laurin, Ian A Gardner, Richard J Whittington
Historically, serological tests for finfish diseases have been underused when compared with their use in terrestrial animal health. For years the nonspecific immune response in fish was judged to make serology unreliable and inferior to the direct measurement of agent analytes. We conducted a systematic review of peer-reviewed publications that reported on the development, validation, or application of serological tests for finfish diseases. A total of 168 articles met the screening criteria; most of them were focused on salmonid pathogens (e...
March 2017: Journal of Aquatic Animal Health
Ian G Brosnan, David W Welch, Melinda Jacobs Scott
In 2011, unusually high flows caused total dissolved gas (TDG) levels in the Columbia River, USA, to escalate well above the 120% regulatory limit that was imposed to prevent harmful impacts to aquatic organisms. After observing gas bubble trauma (GBT) in dead yearling Chinook Salmon Oncorhynchus tshawytscha (smolts) held in tanks, we compared estimated survival rates of acoustic-tagged in-river-migrating (IR) and transported (TR) smolts that were released below Bonneville Dam prior to and during the period of elevated TDG (>120%)...
December 2016: Journal of Aquatic Animal Health
Antonia Concetta Elia, Nicole Pacini, Maria Letizia Fioravanti, Ambrosius Josef Martin Dörr, Annalisa Zaccaroni, Alba Maria Parmeggiani, Andrea Gustinelli, Oliviero Mordenti, Maria Cesarina Abete, Marino Prearo
Florfenicol (FF) is employed in fish farms to contest or prevent bacterial infections. However, this pharmaceutical may produce reactive oxygen species that may cause biochemical changes in antibiotic-treated fish. The aim of this study was to evaluate the effect of FF on Rainbow Trout Oncorhynchus mykiss treated for 10 d with 7.5 and 15 mg/kg FF followed by a withdrawal period of 5 d. Superoxide dismutase, catalase, glutathione peroxidase, glutathione reductase, glutathione S-transferase, glyoxalase I and glyoxalase II, total glutathione, lactic dehydrogenase, and alkaline phosphatase were investigated in the livers of treated and untreated fish...
December 2016: Journal of Aquatic Animal Health
Eduardo Reséndiz, Sergio Flores-Ramírez, Volker Koch, Amaury Cordero-Tapia
Fibropapillomatosis (FP) is characterized by multiple fibroepithelial tumors in all parts of the skin and has been reported in sea turtles worldwide. Clinically infected individuals are often emaciated and anemic. In Mexico, however, there are few records of this disease. In this study of green turtles Chelonia mydas in Laguna San Ignacio in Baja California Sur (BCS), we noted one juvenile with multifocal fibropapilloma lesions on the external upper surface of its eyes and hind flippers. Light microscopy revealed hyperkeratosis, epidermal hyperplasia, dermal papillary projections, and fibroblast proliferation...
December 2016: Journal of Aquatic Animal Health
Christopher Didigwu Nwani, Peace Onas Somdare, Juliana Adimonye Ukonze, Vincent Chikwendu Ejere, Alfreda O Nwadinigwe, Jacinta Chinedu Nwani, Gregory Ejike Odo, Ogechi Nnabuchi Ugbor
In this study, African Catfish (also known as Sharptooth Catfish) Clarias gariepinus were exposed to sublethal concentrations of fenthion of 2.0, 4.0, and 8.0 mg/L for 21 d and allowed to recover for 7 d to investigate the potential for hematological changes. Whole blood was sampled on days 1, 7, 14, and 21 postexposure and after a 7-d recovery period. During exposure, fenthion caused a reduction in red blood cell counts, hemoglobin concentration, and packed cell volume. There was an increase in white blood cell counts but no significant difference in mean corpuscular hemoglobin concentration, mean corpuscular volume, and mean corpuscular hemoglobin...
December 2016: Journal of Aquatic Animal Health
Christopher Didigwu Nwani, Gregory Ejike Odo, Alfreda O Nwadinigwe, Christopher C Onyeke, Chinedu Ifeanyi Atama, Godwin Ngwu, Stanley N Oluah, Juliana Adimonye Ukonze, Bridget Chidi A Ezeibe
Albendazole (ABZ) is a typical broad-spectrum benzimidazole drug used for the treatment of parasitic worm infestations in humans and animals. The present study investigated the oxidative stress biomarkers and hematological parameters in juvenile African Catfish (also known as Sharptooth Catfish) Clarias gariepinus exposed to ABZ for 96 h. Fish were exposed to 0 (control) 20, 40, and 60 mg/L ABZ. The liver and gill tissues were sampled at regular intervals of 24 h, and the results showed significant concentration- and time-dependent increases in the values of lipid peroxidation but reductions in glutathione peroxidase, catalase, superoxide dismutase, and glutathione reductase in both tissues...
December 2016: Journal of Aquatic Animal Health
So-Young Oh, Toyohiko Nishizawa
Red seabream iridovirus (RSIV), a member within genus Megalocytivirus (Iridoviridae), causes serious economic losses to marine fish aquaculture industry in East Asia. In this study, we established a Blue Striped Grunt Haemulon sciurus fin (grunt fin; GF) cell line persistently infected with RSIV (PI-GF(RSIV)) by subculturing GF cells that survived RSIV inoculation. PI-GF(RSIV) cells were morphologically indistinguishable from naive GF cells. They could stably produce RSIV at approximately 10(4.9 ± 0.5) genomes per microliter after 24 passages over 18 months...
December 2016: Journal of Aquatic Animal Health
Behnam Salimi, Kazem Abdi
Leeches have been reported to harbor several important fish pathogens, including spring viremia of carp virus, infectious hematopoietic necrosis virus (IHNV), and viral hemorrhagic septicemia virus (VHSV), and also may contain blood protozoa. In the present study, leeches were collected from water bodies located in Kurdistan province, Iran. The specimens were tested for IHNV, VHSV, and infectious pancreatic necrosis virus (IPNV) using the PCR method. The results showed that two different species of leeches, Hemiclepsis marginata and Hirudo medicinalis, were infected by IPNV among the seven species studied...
December 2016: Journal of Aquatic Animal Health
Meagan A Prescott, Aimee N Reed, Ling Jin, Manoj K Pastey
Since the emergence of cyprinid herpesvirus 3 (CyHV-3), outbreaks have been devastating to Common Carp Cyprinus carpio and koi (a variant of Common Carp), leading to high economic losses. Current diagnostics for detecting CyHV-3 are limited in sensitivity and are further complicated by latency. Here we describe the detection of CyHV-3 by recombinase polymerase amplification (RPA). The RPA assay can detect as low as 10 copies of the CyHV-3 genome by an isothermal reaction and yields results in approximately 20 min...
September 2016: Journal of Aquatic Animal Health
Nivaldo Ferreira do Nascimento, Laura Satiko Okada Nakaghi, Cleonice Cristina Hilbig, Arlene Sobrinho Ventura, Ana Carolina Barni de Azevedo, Andressa Fierli Dean, Robie Allan Bombardelli
In this study, sex and age influenced the hematological profiles of Jundiá (Silver Catfish) Rhamdia quelen. Females showed lower levels of hemoglobin, young fish increased lymphocyte counts, and older fish increased hematocrit values. These results indicate that, depending on age and sex, the fish have disparate hematological profiles. For this reason, it is important to consider the sex and age of an R. quelen when examining the impact of environmental and management factors on this species in terms of their hematological profiles...
September 2016: Journal of Aquatic Animal Health
Fulvio Salati, Alessandra Roncarati, Giulia Angelucci, Alessandra Fenza, Adele Meluzzi
Innate and acquired immune responses of Gilthead Seabream Sparus aurata was studied under normal culture and short-term stressful conditions for 18 months in offshore sea cages in Alghero Bay, Italy. Every 45 d, 50 fish were sampled and divided into two groups: fish in the first group (normal culture conditions) were bled after harvesting; fish in the second group were put into a tank under stressful conditions (crowding and confinement) and bled after 2 h. Innate humoral immunity, such as complement-like, hemagglutination, and lysozyme activities, was determined in the sera of both groups...
September 2016: Journal of Aquatic Animal Health
Wei-Na Mu, Zhi-Hua Li, Li-Qiao Zhong, Yan-Hua Wu
Tributyltin (TBT) and cadmium (Cd) are two common pollutants in aquatic environments. This study was designed to examine the physiological responses of juvenile Grass Carp Ctenopharyngodon idella to TBT, Cd, and their combination. Fish were apportioned into a control group, a TBT group (7.5 μg/L), a Cd group (2.97 mg/L), and a TBT-Cd group (7.5 μg/L TBT, 2.97 mg/L Cd(2+)) for 7 d. The following activities were measured: Na(+),K(+)-ATPase in gill tissues; nitric oxide synthase (NOS), acetylcholinesterase (AChE), and monoamine oxidase (MAO) in brain tissues; and lipid peroxidation (LPO), malondialdehyde (MDA), total antioxidative capacity (T-AOC), and glutathione (GSH) in liver tissues...
September 2016: Journal of Aquatic Animal Health
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"