444 results match your criteria Journal of aquatic animal health[Journal]


Traditional Chinese Medicine Enhances Growth, Immune Response, and Resistance to Streptococcus agalactiae in Nile Tilapia.

J Aquat Anim Health 2019 Feb 15. Epub 2019 Feb 15.

Langye Animal Husbandry Company Limited, Gaozhou City, Guangdong Province, China.

Herbal supplements are suitable for improving fish health and combating diseases in fish culture. However, the mechanism of action of many herbal mixtures remains unclear. This study was conducted to evaluate the effects of traditional Chinese medicine (TCM; a mix of Astragalus membranaceus, Angelica sinensis, and Crataegus hupehensis at a ratio of 1:1:1 on a weight basis) on growth, immune response, and disease resistance in Nile tilapia Oreochromis niloticus. Read More

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http://dx.doi.org/10.1002/aah.10049DOI Listing
February 2019

Retrospective and Predictive Investigation of Fish Kill Events.

J Aquat Anim Health 2019 Feb 8. Epub 2019 Feb 8.

Department of Fisheries, Wildlife, and Conservation Biology, University of Minnesota, 2003 Upper Buford Circle, St. Paul, Minnesota, 55108, USA.

Fish kill investigations are critical to understanding threats to aquatic ecosystems and can serve as a measure of environmental disruption as well as an early indicator of emerging disease. The goal of this study was to analyze historical data related to such events among wild fish populations in Minnesota in order to assess the quality and completeness of the data and potential trends in fish kills. After excluding events with incomplete data (e. Read More

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http://dx.doi.org/10.1002/aah.10054DOI Listing
February 2019

Frequency of occurrence of the rat lungworm parasite in the invasive island apple snail in South Carolina, USA.

J Aquat Anim Health 2019 Feb 5. Epub 2019 Feb 5.

Marine Resources Research Institute, South Carolina, Department of Natural Resources, 217 Fort Johnson Road, Charleston, SC, 29412.

The rat lungworm parasite, Angiostrongylus cantonensis, is a nematode parasite that can cause potentially fatal eosinophilic meningitis in humans. The life cycle of A. cantonensis involves multiple hosts, with the most common terminal hosts being rodents and intermediate hosts comprising gastropods. Read More

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http://dx.doi.org/10.1002/aah.10063DOI Listing
February 2019

Variation in Glycogen Distribution among Freshwater Bivalve Tissues: Simplified Protocol and Implications.

J Aquat Anim Health 2019 Feb 4. Epub 2019 Feb 4.

Department of Zoology and Fisheries, Czech University of Life Sciences Prague, Kamýcká 129, CZ-16500, Prague, Czech Republic.

Glycogen is a primary metabolic reserve in bivalves and can be suitable for the evaluation of bivalve condition and health status, but the use of glycogen as a diagnostic tool in aquaculture and biomonitoring is still relatively rare. A tissue biopsy combined with a simplified phenol-sulfuric acid method was used in this study to evaluate the inter- and intraindividual variation in the glycogen concentrations among several tissues (foot, mantle, gills, adductor muscle) of the unionid bivalve, the duck mussel Anodonta anatina. This short report documents that individual bivalves differ in the spatial distribution of glycogen among tissues. Read More

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http://dx.doi.org/10.1002/aah.10057DOI Listing
February 2019

Resurgence of Salmonid Herpesvirus-3 Infection (Epizootic Epitheliotropic Disease) in Hatchery-Propagated Lake Trout in Michigan.

J Aquat Anim Health 2019 Jan 25. Epub 2019 Jan 25.

Michigan Department of Natural Resources, Fisheries Division, Post Office Box 30446, Lansing, Michigan, 48909, USA.

Over the past century, populations of Lake Trout Salvelinus namaycush have declined throughout the Great Lakes basin due to overfishing, habitat destruction, introduction of invasive species, and associated recruitment issues from high thiaminase, as well as emerging infectious diseases. To combat these declines, state and federal fishery management agencies undertook substantial stock enhancement efforts, including more stringent regulation of sport and commercial catch limits and increasing hatchery propagation of Lake Trout stocked into Great Lakes basin waterways. One state fish hatchery involved in these rehabilitation efforts experienced mass mortality events in 2012 and 2017. Read More

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http://dx.doi.org/10.1002/aah.10051DOI Listing
January 2019

Environmental factors associated with the presence of Vibrionaceae in tropical cage-cultured marine fishes.

J Aquat Anim Health 2019 Jan 17. Epub 2019 Jan 17.

Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.

This study investigates the environmental factors associated with the presence of Vibrionaceae in economically important cage-cultured tropical marine fish; the Asian Seabass, Red Snapper and Hybrid Grouper. Fish samplings were conducted at monthly intervals between December 2016 and August 2017. The body weight and length of individual fish were measured, while the skin, eye, liver and kidney were sampled for bacterial isolation and identification. Read More

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http://dx.doi.org/10.1002/aah.10062DOI Listing
January 2019

Changes in hematological parameters and heat shock proteins in juvenile sablefish, Anoplopoma fimbria depending on water temperature stress.

J Aquat Anim Health 2019 Jan 13. Epub 2019 Jan 13.

Department of Aquatic Life Medicine, Pukyong National University, Busan, Korea.

Juvenile sablefish, Anoplopoma fimbria, of length 15.3±1.6 cm and weight 68. Read More

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http://doi.wiley.com/10.1002/aah.10061
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http://dx.doi.org/10.1002/aah.10061DOI Listing
January 2019
6 Reads

Effects of Parasite Infection and Host Body Size on Habitat Associations of Invasive Aquatic Snails: Implications for Environmental Monitoring.

J Aquat Anim Health 2018 Dec 23. Epub 2018 Dec 23.

Department of Geography, King's College London, Strand, London, WC2R 2LS, UK.

The Comal River, a spring-fed system in central Texas, was invaded in the 1960s by two Asian aquatic snails (Thiaridae: red-rimmed melania Melanoides tuberculata and quilted melania Tarebia granifera) and subsequently by three of their trematode parasites (the avian eye-fluke Philophthalmus gralli in the 1960s; the gill trematode Centrocestus formosanus in the 1990s; and the intestinal fluke Haplorchis pumilio in the 2000s). Previous snail collections (2001-2002) established that habitat conditions significantly affect the distribution of both snail species. However, the effects of snail size (known to influence infection prevalence) and habitat conditions (known to influence snail size) on trematode infection patterns in this system were not evaluated. Read More

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http://dx.doi.org/10.1002/aah.10059DOI Listing
December 2018
1 Read

Differential Effects of Adult Salmon Lice Lepeophtheirus salmonis on Physiological Responses of Sockeye Salmon and Atlantic Salmon.

J Aquat Anim Health 2018 Dec 19. Epub 2018 Dec 19.

Fisheries and Ocean Canada, Pacific Biological Station, Nanaimo, British Columbia, V9T 6N7, Canada.

The salmon louse Lepeophtheirus salmonis, a type of sea lice (family Caligidae), is enzootic in marine waters of British Columbia and poses a health risk to both farmed Atlantic Salmon Salmo salar and wild Pacific salmon Oncorhynchus spp. At the adult stage, sea lice infections can often result in severe cutaneous lesions in their salmonid hosts. To evaluate and compare the physiological consequences of adult L. Read More

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http://dx.doi.org/10.1002/aah.10053DOI Listing
December 2018

Immunohistochemical Study of Four Fish Tumors.

J Aquat Anim Health 2018 Dec 16. Epub 2018 Dec 16.

Department of Veterinary Sciences, Polo Universitario dell'Annunziata, University of Messina, 98168, Messina, Italy.

The present study supports the usefulness of ancillary techniques, such as immunohistochemistry, as a valid diagnostic tool in the field of fish oncology. The immunohistochemical patterns observed in four neoplasms on four individual teleosts belonging to different species are described. Cytokeratin, vimentin, actin, S100, calretinin, and Melan-A antibodies were used. Read More

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http://dx.doi.org/10.1002/aah.10058DOI Listing
December 2018
1 Read

Biofilm and sediment are major reservoirs of virulent Aeromonas hydrophila (vAh) in catfish production ponds.

J Aquat Anim Health 2018 Dec 14. Epub 2018 Dec 14.

School of Fisheries, Aquaculture, and Aquatic Sciences, 203 Swingle Hall. Auburn University. Auburn, AL, 36849, USA.

The genus Aeromonas comprises more than 60 recognized species that include many important fish pathogens such as the causative agents of furunculosis, and motile Aeromonas septicemia (MAS). Although MAS is typically considered a secondary infection, a new virulent A. hydrophila (vAh) strain has been causing devastating losses to the catfish industry in Alabama since 2009. Read More

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http://dx.doi.org/10.1002/aah.10056DOI Listing
December 2018

Yersinia ruckeri Isolated from Common Mudpuppy Necturus maculosus.

J Aquat Anim Health 2018 Dec 13. Epub 2018 Dec 13.

U.S. Fish and Wildlife Service, Midwest Fisheries Center, La Crosse Fish Health Center, 555 Lester Avenue, Onalaska, Wisconsin, 54650, USA.

During a routine health inspection of apparently healthy wild-caught common mudpuppies Necturus maculosus, the bacteria Yersinia ruckeri was isolated and the identity confirmed using biochemical and molecular methods. This represents the first isolation of Y. ruckeri from an amphibian. Read More

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http://dx.doi.org/10.1002/aah.10052DOI Listing
December 2018

Natural Concurrent Infection of Vibrio harveyi and V. alginolyticus in Cultured Hybrid Groupers in Malaysia.

J Aquat Anim Health 2018 Dec 7. Epub 2018 Dec 7.

Department of Clinical Oral Biology, Faculty of Dentistry, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300, Kuala Lumpur, Malaysia.

In September 2016, a marine fish farm operator in Selangor, Malaysia, reported a disease outbreak affecting juvenile hybrid groupers (Camouflage Grouper Epinephelus polyphekadion × Tiger Grouper E. fuscoguttatus). The average daily mortality was 120 fish, resulting in a cumulative mortality rate of 29% within 10 d. Read More

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http://dx.doi.org/10.1002/aah.10055DOI Listing
December 2018
9 Reads

Susceptibility of Nanophyetus salmincola Cercariae to Formalin, Hydrogen Peroxide, and Seawater.

J Aquat Anim Health 2018 Oct 24. Epub 2018 Oct 24.

U.S. Geological Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, Nordland, Washington, 98358, USA.

The ability of formalin, PEROX-AID (hydrogen peroxide), and seawater to kill waterborne Nanophyetus salmincola cercariae was evaluated in vitro. Newly emerged cercariae survived for extended periods in freshwater, with 53-73% survival occurring in negative control groups after 24 h. Exposure to dilutions of formalin reduced this survival time, with 0% of cercariae surviving after 30 min in 450 μL/L, 40 min in 225 μL/L, and 300 min in 113 μL/L. Read More

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http://dx.doi.org/10.1002/aah.10050DOI Listing
October 2018

Use of Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry for the Identification of Pathogenic Vibrio in Fish.

J Aquat Anim Health 2018 Dec 23;30(4):332-338. Epub 2018 Oct 23.

Washington Animal Disease Diagnostic Laboratory, Washington State University, Post Office Box 647034, Pullman, Washington, 99164, USA.

Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS) is a rapid, cost-effective method for identification of a broad range of bacterial taxa, but its accuracy for Vibrio spp. from samples of aquatic animal origin is unknown. We used DNA sequence analysis targeting two conserved genes, rpoB and rpoD, as the identification standard for 5 reference strains and 35 Vibrio spp. Read More

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http://doi.wiley.com/10.1002/aah.10044
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http://dx.doi.org/10.1002/aah.10044DOI Listing
December 2018
13 Reads

Establishing a Diagnostic Technique for Coelomocentesis in the Long-Spined Sea Urchin Diadema antillarum.

J Aquat Anim Health 2018 Dec 18;30(4):325-331. Epub 2018 Oct 18.

Department of Large Animal Clinical Sciences, University of Florida, 2015 Southwest 16th Avenue, Gainesville, Florida, 32608, USA.

Coelomic fluid aspiration has been utilized in echinoderms in research and clinical settings. Detailed procedural descriptions for coelomic fluid sampling in sea urchins (class Echinoidea) are lacking, and samples are prone to contamination. The objectives of this study were to (1) standardize a technique for coelomic fluid collection in long-spined sea urchin Diadema antillarum that optimizes the diagnostic quality of the sample utilizing diagnostic imaging, (2) identify coelomic fluid bacterial isolates (using Biolog GEN III MicroLog and 16s rDNA sequencing), and (3) compare positive cultures to animal weight, holding time prior to sampling, water temperature, and gross fluid appearance. Read More

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http://dx.doi.org/10.1002/aah.10043DOI Listing
December 2018

Retail Baitfish in Michigan Harbor Serious Fish Viral Pathogens.

J Aquat Anim Health 2018 Dec 12;30(4):253-263. Epub 2018 Oct 12.

Michigan Department of Natural Resources, Fisheries Division, Post Office Box 30466, Lansing, Michigan, 48909, USA.

Indigenous small cyprinid fish species play an important role in Great Lakes ecosystems and also comprise the backbone of a multimillion-dollar baitfish industry. Due to their widespread use in sport fisheries of the Laurentian Great Lakes, there are increasing concerns that baitfish may introduce or disseminate fish pathogens. In this study, we evaluated whether baitfish purchased from 78 randomly selected retail bait dealers in Michigan harbored fish viruses. Read More

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http://dx.doi.org/10.1002/aah.10034DOI Listing
December 2018

Isolation and Characterization of Flavobacteriaceae from Farmed and Wild Nile Tilapia in Tanzania.

J Aquat Anim Health 2018 Oct 6. Epub 2018 Oct 6.

Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Post Office Box 369, Sentrum, N-0102, Oslo, Norway.

The present study was conducted to explore the occurrence of Flavobacteriaceae in wild Nile Tilapia Oreochromis niloticus (n = 108) collected from Lake Victoria and farmed Nile Tilapia (n = 187) collected from 12 ponds in the Morogoro region of Tanzania. The size of the ponds surveyed ranged from 130 to 150 m . Pond parameters and fish morphometric data were recorded during sampling. Read More

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http://doi.wiley.com/10.1002/aah.10048
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http://dx.doi.org/10.1002/aah.10048DOI Listing
October 2018
1 Read

Concurrent Infection of Batrachochytrium dendrobatidis and Ranavirus among Native Amphibians from Northeastern Oklahoma, USA.

J Aquat Anim Health 2018 Dec 5;30(4):291-301. Epub 2018 Oct 5.

Sam Noble Oklahoma Museum of Natural History, University of Oklahoma, 2401 Chautauqua Avenue, Norman, Oklahoma, 73072-7029, USA.

Global amphibian decline continues to be a great concern despite our increased understanding of the causes behind the observed patterns of the decline, such as habitat modification and infectious diseases. Although there is a large body of literature on the topic of amphibian infectious diseases, pathogen prevalence and distribution among entire communities of species in many regions remain poorly understood. In addition to these geographic gaps in our understanding, past work has focused largely on individual pathogens, either Batrachochytrium dendrobatidis (Bd) or ranavirus (RV), rather than dual infection rates among host species. Read More

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http://dx.doi.org/10.1002/aah.10041DOI Listing
December 2018

Health Characteristics and Blood Bacterial Assemblages of Healthy Captive Red Drum: Implications for Aquaculture and Fish Health Management.

J Aquat Anim Health 2018 Dec 8;30(4):339-353. Epub 2018 Nov 8.

Mote Marine Laboratory, 1600 Ken Thompson Parkway, Sarasota, Florida, 34236, USA.

The newly emerging tissue microbiota hypothesis suggests that bacteria found in blood and tissues play a role in host health, as these bacterial communities have been associated with various noncommunicable diseases such as obesity, liver disease, and cardiovascular disease. Numerous reports have identified bacteria in the blood of healthy finfish, indicating bacteremia may not always indicate disease. Current research priorities in aquaculture include the development of technologies and practices that will allow for an effective reduction in antibiotic use for the prevention and treatment of disease. Read More

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http://doi.wiley.com/10.1002/aah.10047
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http://dx.doi.org/10.1002/aah.10047DOI Listing
December 2018
2 Reads

Rapid Detection and Monitoring of Flavobacterium psychrophilum in Water by Using a Handheld, Field-Portable Quantitative PCR System.

J Aquat Anim Health 2018 Dec 22;30(4):302-311. Epub 2018 Nov 22.

Department of Fish and Wildlife Sciences and Aquaculture Research Institute, University of Idaho, 875 Perimeter Drive, Moscow, Idaho, 83844, USA.

Advances in technology are making it easier for rapid field detection of microbes in aquaculture. Specifically, real-time quantitative PCR (qPCR) analysis, which has traditionally been confined to laboratory-based protocols, is now available in a handheld, field-portable system. The feasibility of using the Biomeme handheld qPCR system for rapid (<50 min) on-site detection and monitoring of Flavobacterium psychrophilum from filtered water samples was evaluated. Read More

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http://dx.doi.org/10.1002/aah.10046DOI Listing
December 2018

Vibriosis in Fish: A Review on Disease Development and Prevention.

J Aquat Anim Health 2018 Sep 24. Epub 2018 Sep 24.

Laboratory of Marine Biotechnology, Institute of Bioscience, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia.

Current growth in aquaculture production is parallel with the increasing number of disease outbreaks, which negatively affect the production, profitability, and sustainability of the global aquaculture industry. Vibriosis is among the most common diseases leading to massive mortality of cultured shrimp, fish, and shellfish in Asia. High incidence of vibriosis can occur in hatchery and grow-out facilities, but juveniles are more susceptible to the disease. Read More

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http://dx.doi.org/10.1002/aah.10045DOI Listing
September 2018

Survival of Whirling-Disease-Resistant Rainbow Trout Fry in the Wild: A Comparison of Two Strains.

J Aquat Anim Health 2018 Dec 29;30(4):280-290. Epub 2018 Aug 29.

Colorado Parks and Wildlife, 317 West Prospect Road, Fort Collins, Colorado, 80526, USA.

Introduced pathogens can affect fish populations, and three main factors affect disease occurrence: the environment, host, and pathogen. Manipulating at least one of these factors is necessary for controlling disease. Myxobolus cerebralis, the parasite responsible for salmonid whirling disease, became established in Colorado during the 1990s and caused significant declines in wild Rainbow Trout Oncorhynchus mykiss populations. Read More

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http://dx.doi.org/10.1002/aah.10040DOI Listing
December 2018
23 Reads

Elimination of Myxobolus cerebralis in Placer Creek, a Native Cutthroat Trout Stream in Colorado.

J Aquat Anim Health 2018 Dec 21;30(4):264-279. Epub 2018 Aug 21.

Colorado Parks and Wildlife, 711 Independent Avenue, Grand Junction, Colorado, 80501, USA.

Placer Creek, a tributary of Sangre de Cristo Creek in Colorado's San Luis Valley, supported an allopatric core conservation population of native Rio Grande Cutthroat Trout Oncorhynchus clarkii virginalis during much of the 20th century. After the failure of gabion barriers in the late 1990s, Brook Trout Salvelinus fontinalis infected with Myxobolus cerebralis invaded from Sangre de Cristo Creek. By 2005, whirling disease (WD) and competition from Brook Trout reduced Rio Grande Cutthroat Trout numbers to less than 10% of the total trout population. Read More

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http://dx.doi.org/10.1002/aah.10039DOI Listing
December 2018
5 Reads

Humoral and Cellular Immune Response of European Seabass Dicentrarchus labrax Vaccinated with Heat-Killed Mycobacterium marinum (iipA::kan Mutant).

J Aquat Anim Health 2018 Dec 23;30(4):312-324. Epub 2018 Oct 23.

Israel Oceanographic and Limnological Research, National Center for Mariculture, Eilat, 8811201, Israel.

No vaccine is yet commercially available against Mycobacterium marinum, the etiological agent of fish mycobacteriosis (also known as "fish tuberculosis"). The mycobacterial gene responsible for invasion and intracellular persistence, iipA, is known to moderate M. marinum pathology in Zebrafish Danio rerio. Read More

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http://dx.doi.org/10.1002/aah.10042DOI Listing
December 2018
1 Read

Comparison of Lethal and Nonlethal Sampling Methods for the Detection of Largemouth Bass Virus (LMBV) from Largemouth Bass in the Upper Mississippi River.

J Aquat Anim Health 2018 Sep 24;30(3):217-225. Epub 2018 Jul 24.

Department of Mathematics and Statistics, University of Wisconsin-La Crosse, 1725 State Street, La Crosse, Wisconson, 54601, USA.

Traditional methodologies to identify fish pathogens require euthanasia before the collection of tissue samples. While these methods are standardized and proven, there are instances where nonlethal alternatives would be preferred. Despite the need to develop nonlethal sampling techniques, few publications have focused on them and even fewer have used these approaches to identify viruses from infections occurring in wild fish populations. Read More

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http://dx.doi.org/10.1002/aah.10029DOI Listing
September 2018
1 Read

Toxic Effects and Depuration on the Antioxidant and Neurotransmitter Responses after Dietary Lead Exposure in Starry Flounder.

J Aquat Anim Health 2018 Dec 29;30(4):245-252. Epub 2018 Aug 29.

Department of Aquatic Life Medicine, Pukyong National University, Busan, South Korea.

Starry Flounder Platichthys stellatus were exposed to dietary lead (Pb) at concentrations of 0, 30, 60, 120, and 240 mg/kg for 4 weeks. Recover period was conducted for 2 weeks after the exposure. Exposure to Pb concentrations over 60 mg/kg induced significant changes in the antioxidant responses in the liver, kidney, and gill and continued even after the depuration period in the liver (over 120 mg/kg for superoxide dismutase [SOD] activity) and kidney (at 240 mg/kg for glutathione [GSH] levels). Read More

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http://dx.doi.org/10.1002/aah.10033DOI Listing
December 2018
11 Reads

Antibiotic Treatment of Mucodegeneration and Positive Buoyancy in a Chambered Nautilus Nautilus pompilius.

J Aquat Anim Health 2018 Sep 29;30(3):175-178. Epub 2018 Jun 29.

Department of Marine Science, Central Campus Regional Academy, 1800 Grand Avenue, Des Moines, Iowa, 50309, USA.

The correct diagnosis and treatment of disease in chambered nautiluses Nautilus pompilius are difficult. The basic morphology and natural behaviors of the species tend to mask the initial onset of a disease or infection, and by the time it is observable, mortality usually occurs. A single specimen of chambered nautilus at the Museum of Nature South Tyrol, Italy, exhibited symptoms of an infection, including mucus production, abnormal buoyancy, irregular hood appearance, and inconsistent tentacle movement. Read More

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http://dx.doi.org/10.1002/aah.10032DOI Listing
September 2018
1 Read

A Description of a Noninvasive Surgical Training Pathway Using Translational Tools to Teach Intracoelomic Implantation of Acoustic Transmitters in Fish.

J Aquat Anim Health 2018 Sep 19;30(3):226-232. Epub 2018 Jul 19.

Cornell University, 4122 Snee Hall, Ithaca, New York, 14850, USA.

Researchers engaged in surgical implantation of acoustic transmitters into fish must receive adequate and appropriate training to ensure the welfare of their subjects and the quality of the data collected. Increasingly, researchers are being encouraged to partner with veterinarians to improve training and to consider the principles of animal welfare in training. Here, we describe a five-stage training pathway, including implementation of new training tools (the Translational Training Tools and field certification), that was developed collaboratively by researchers and veterinarians and addresses the "three Rs" of animal welfare in the context of surgical training. Read More

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http://dx.doi.org/10.1002/aah.10031DOI Listing
September 2018
2 Reads

Efficacy of Benzocaine, Eugenol, and Menthol as Anesthetics for Freshwater Angelfish.

J Aquat Anim Health 2018 Sep 23;30(3):210-216. Epub 2018 Jul 23.

Campus Fernandópolis, Brazil University, Estrada Projetada F-1, s/n Fazenda Santa Rita, 15600-000, Fernandópolis, São Paulo, Brazil.

For the production and commercialization of ornamental fish species, it is indispensable to collect biometric data that facilitate the selection of animals for trade and genetic improvement of the stock. However, during the handling process, fish receive more stress if proper anesthetics are not used. Thus, application of appropriate anesthetics is an important tool for minimizing stress in animals. Read More

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http://dx.doi.org/10.1002/aah.10030DOI Listing
September 2018
4 Reads

Identification of Two Pathogenic Aeromonas Species Isolated from Juvenile Burbot during Production-Related Epizootics.

J Aquat Anim Health 2018 Sep 27;30(3):201-209. Epub 2018 Jul 27.

Department of Fish and Wildlife Sciences and the Aquaculture Research Institute, University of Idaho, 875 Perimeter Drive, Mail Stop 1136, Moscow, Idaho, 83844-1136, USA.

In response to population declines of North American Burbot Lota lota maculosa (hereafter, Burbot), conservation aquaculture methods have been developed for this species. In general, Burbot are relatively resistant to many salmonid pathogens; however, cultured juvenile Burbot have experienced periodic epizootic disease outbreaks during production. A series of trials was conducted to determine the virulence of select bacteria isolated from juvenile Burbot after outbreaks that occurred in 2012 and 2013 at the University of Idaho's Aquaculture Research Institute. Read More

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http://dx.doi.org/10.1002/aah.10023DOI Listing
September 2018
5 Reads

Thiamine Levels in Muscle and Eggs of Adult Pacific Salmon from the Fraser River, British Columbia.

J Aquat Anim Health 2018 Sep 10;30(3):191-200. Epub 2018 Jul 10.

35 Honeyfield Lane, Peralta, New Mexico, 87042, USA.

Multiple species and stocks of Pacific salmon Oncorhynchus spp. have experienced large declines in the number of returning adults over a wide region of the Pacific Northwest due to poor marine survival (low smolt-to-adult survival rates). One possible explanation for reduced survival is thiamine deficiency. Read More

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http://dx.doi.org/10.1002/aah.10024DOI Listing
September 2018
1 Read

Distribution and Prevalence of Myxobolus cerebralis in Postfire Areas of Plumas National Forest: Utility of Environmental DNA Sampling.

J Aquat Anim Health 2018 Jun 30;30(2):130-143. Epub 2018 Apr 30.

Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, California, 95616, USA.

Myxobolus cerebralis is a myxozoan parasite and the etiological agent of whirling disease in salmonids. The parasite's life cycle involves waterborne spores and requires both a salmonid fish and the benthic freshwater oligochaete worm Tubifex tubifex (Oligochaeta: Tubificidae). Wildfires can lead to the erosion of fine sediments into stream channels and have been implicated as promoting environmental conditions that are suitable for the survival and success of T. Read More

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http://doi.wiley.com/10.1002/aah.10014
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http://dx.doi.org/10.1002/aah.10014DOI Listing
June 2018
18 Reads

Infection by Nanophyetus salmincola and Toxic Contaminant Exposure in Out-migrating Steelhead from Puget Sound, Washington: Implications for Early Marine Survival.

J Aquat Anim Health 2018 Jun 30;30(2):103-118. Epub 2018 Apr 30.

U.S. Geologic Survey, Western Fisheries Research Center, Marrowstone Marine Field Station, 616 Marrowstone Point Road, Nordland, Washington, 98358, USA.

Out-migrating steelhead Oncorhynchus mykiss from four Puget Sound rivers and associated marine basins of Puget Sound in Washington State were examined for the parasite, Nanophyetus salmincola in 2014 to determine whether recent trends in reduced marine survival are associated with the presence of this pathogen. A subset of steelhead from three of these river-marine basin combinations was analyzed for the presence of persistent organic pollutants (POPs) to assess whether exposure to these contaminants is a contributing factor to their reduced marine survival. The prevalence and parasite load of N. Read More

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http://dx.doi.org/10.1002/aah.10017DOI Listing
June 2018
1 Read

First Report of Achlya oblongata Infection in Freshwater-Reared Asian Seabass Lates calcarifer.

J Aquat Anim Health 2018 Dec 30;30(4):239-244. Epub 2018 Apr 30.

Laboratory of Aquatic Medicine, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo, 180-8602, Japan.

In September 2014, a freshwater oomycete was first isolated from Asian Seabass Lates calcarifer fry that were reared in freshwater at a fish hatchery in Sabah, Malaysia. A fungal strain was isolated from infected fry by using glucose yeast extract (GY) agar. From morphological identification, the strain belonged to the genus Achlya based on the mode of zoospore release. Read More

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http://dx.doi.org/10.1002/aah.10018DOI Listing
December 2018
3 Reads

Histopathological Alterations in the Gonad of Megapitaria squalida (Mollusca: Bivalvia) Inhabiting a Heavy Metals Polluted Environment.

J Aquat Anim Health 2018 Jun 30;30(2):144-154. Epub 2018 Apr 30.

Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas, Unidad Profesional Lázaro Cárdenas, Prolongación Manuel Carpio y Plan de Ayala s/n, Col. Santo Tomás, C.P. 11340, Delegación Miguel Hidalgo, Ciudad de México, México.

The gonadal health status of the chocolate clam Megapitaria squalida collected from the Santa Rosalía mining port and San Lucas beach (reference site), Gulf of California, Mexico, was assessed through histological analysis of the reproductive tissue, from which the histopathological alteration index (HAI) was determined. In addition, copper and iron accumulation in tissue was revealed using histochemical techniques. Our results showed a large presence of copper (30%) and iron (45%) only in the gonad tissue of clams from Santa Rosalía, in which histopathological alterations observed were inflammatory responses, degenerative-progressive processes, cell death, and response to infectious agents. Read More

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http://dx.doi.org/10.1002/aah.10015DOI Listing
June 2018
10 Reads

Metamorphosis of Ichthyophonus Schizonts Transiting the Gastrointestinal Tract of Experimentally Exposed Rainbow Trout.

J Aquat Anim Health 2018 Jun 26;30(2):95-102. Epub 2018 Apr 26.

Clear Springs Foods, Inc., Research Division, Buhl, Idaho, 83316, USA.

Other than the initial infectious cell, schizonts are the only stage of the parasite Ichthyophonus sp. that has been identified in the tissues of a living host, and they are known to initiate new infections when ingested by a suitable host. However, after feeding Ichthyophonus-infected tissue to Rainbow Trout Oncorhynchus mykiss, we observed that once infection was initiated, some schizonts proceeded to develop into several other morphologic forms indistinguishable from those previously described from recently deceased hosts, decomposing infected corpses, and in vitro culture. Read More

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http://dx.doi.org/10.1002/aah.10004DOI Listing
June 2018
3 Reads

Investigation of a Cyprinid Herpesvirus 1 Disease Episode in a Group of Pond-Reared Koi.

J Aquat Anim Health 2018 Sep 24;30(3):185-190. Epub 2018 May 24.

Department of Infectious Diseases and Pathology, College of Veterinary Medicine, University of Florida, Gainesville, Florida, 32611, USA.

Fifteen adult koi (a variant of Common Carp Cyprinus carpio) simultaneously developed white cutaneous proliferations affecting up to 30% of their bodies. The onset of these lesions (in September 2014) was associated with their return to a remodeled backyard water garden after temporarily being maintained in a plastic swimming pool. A single water temperature taken during the outbreak read 21°C on November 17, 2014. Read More

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http://dx.doi.org/10.1002/aah.10022DOI Listing
September 2018
5 Reads
0.990 Impact Factor

Antibacterial Activity of Constituents from Mangosteen Garcinia mangostana Fruit Pericarp against Several Channel Catfish Pathogens.

J Aquat Anim Health 2018 Sep 26;30(3):179-184. Epub 2018 Jun 26.

U.S. Department of Agriculture, Agricultural Research Service, Natural Products Utilization Research Unit, Thad Cochran National Center for Natural Products Research, Post Office Box 1848, University, Mississippi, 38766, USA.

Bacterial diseases cause major financial damage to the producers of Channel Catfish Ictalurus punctatus in the southeastern USA. The two most common bacterial diseases among pond-raised Channel Catfish are enteric septicemia of catfish, caused by the gram-negative bacterium Edwardsiella ictaluri, and columnaris disease, caused by the rod-shaped, gram-negative bacterium Flavobacterium columnare. Streptococcosis is another, less-common bacterial disease in catfish and is caused by the gram-positive coccus Streptococcus iniae. Read More

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http://doi.wiley.com/10.1002/aah.10021
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http://dx.doi.org/10.1002/aah.10021DOI Listing
September 2018
7 Reads

Improved Conventional PCR Assay for Detecting Tetracapsuloides bryosalmonae DNA in Fish Tissues.

J Aquat Anim Health 2018 Jun 30;30(2):164-170. Epub 2018 Apr 30.

U.S. Fish and Wildlife Service, Bozeman Fish Health Center, 1805 South 22nd Avenue, Suite 1, Bozeman, Montana, 59718, USA.

Conventional PCR is an established method to detect Tetracapsuloides bryosalmonaeDNA in fish tissues and to confirm diagnosis of proliferative kidney disease (PKD) caused by T. bryosalmonae. However, the commonly used PKX5f-6r primers were designed with the intention of obtaining sequence information and are suboptimal for determining parasite DNA presence. Read More

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http://dx.doi.org/10.1002/aah.10020DOI Listing
June 2018
5 Reads

Risk Factors Associated with Mortality of Age-0 Smallmouth Bass in the Susquehanna River Basin, Pennsylvania.

J Aquat Anim Health 2018 03;30(1):65-80

U.S. Geological Survey, New Jersey Water Science Center, 3450 Princeton Pike, Suite 110, Lawrenceville, New Jersey, 08648, USA.

Evidence of disease and mortalities of young of the year (age-0) Smallmouth Bass Micropterus dolomieu has occurred during the late spring and summer in many parts of the Susquehanna River watershed since 2005. To better understand contributing factors, fish collected from multiple areas throughout the watershed as well as out-of-basin reference populations (Allegheny and Delaware River basins; experimental ponds, Kearneysville, West Virginia) were examined grossly and histologically for abnormalities. Tissue contaminant concentrations were determined from whole-body homogenates, and water contaminant concentrations were estimated using time-integrated passive samplers at selected sites. Read More

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http://dx.doi.org/10.1002/aah.10009DOI Listing
March 2018
7 Reads

Dietary Onion or Ginger Modulates the Stress Response and Susceptibility to Vibrio harveyi JML1 Infection in Brown-marbled Grouper Epinephelus fuscoguttatus Juveniles.

J Aquat Anim Health 2018 03;30(1):39-49

Southeast Asian Fisheries Development Center, Aquaculture Department, Tigbauan, Iloilo, 5021, Philippines.

Onion Allium cepa and ginger Zingiber officinale have health-promoting properties that qualify them as functional foods. The effect of repeated acute stressors was examined in juvenile Brown-marbled Grouper Epinephelus fuscoguttatus that were fed four diets supplemented with onion at 1.8%, ginger at 1. Read More

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http://dx.doi.org/10.1002/aah.10005DOI Listing
March 2018
3 Reads

Humoral Immune Responses to Select Marine Bacteria in Loggerhead Sea Turtles Caretta caretta and Kemp's Ridley Sea Turtles Lepidochelys kempii from the Southeastern United States.

J Aquat Anim Health 2018 03;30(1):20-30

Department of Biological Sciences, Clemson University, 132 Long Hall, Clemson, South Carolina, 29634, USA.

Serum from Kemp's ridley sea turtles Lepidochelys kempii and loggerhead sea turtles Caretta caretta was collected during summer in 2011, 2012, and 2013. Serum immunoglobulin Y (IgY) recognition of lysate proteins from nine bacterial species and whole bacterium-specific IgY titers to these pathogens were quantified. Serum and purified IgY recognized proteins of all bacteria, with protein recognition for some species being more pronounced than others. Read More

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http://dx.doi.org/10.1002/aah.10012DOI Listing
March 2018
22 Reads

Histological Alterations in Pacific Oysters Crassostrea gigas that Survived a Summer Mortality Event in Baja California, Mexico.

J Aquat Anim Health 2018 03;30(1):31-38

Sol Azul, Sociedad Anónima de Capital Variable, Boulevard Álvaro Obregón 720-2, Colonia El Esterito, 23020, La Paz, Baja California Sur, México.

A mortality episode (>90%) of triploid and diploid Pacific oysters Crassostrea gigas cultured in Baja California Sur occurred during summer 2012, coinciding with a thermal anomaly, an algal bloom, and low oxygen values. To help explain the cause of the mortalities, histological analyses and molecular tests for specific pathogens (ostreid herpesvirus 1 [OsHV-1] and Perkinsus marinus) were performed on oysters surviving at the end of the episode. Triploid oysters showed a high percentage of males (43%) and hermaphrodites (30%); 93% of these oysters were in the gonadic reabsorption stage, and in some cases, hemocytes completely filled the lumen of the gonadic follicles. Read More

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http://dx.doi.org/10.1002/aah.10006DOI Listing
March 2018
10 Reads

Toxicity of Potassium Chloride Compared to Sodium Chloride for Zebra Mussel Decontamination.

J Aquat Anim Health 2018 03;30(1):3-12

Department of Biology, State University of New York College at Oneonta, 108 Ravine Parkway, Oneonta, New York, 13820, USA.

The use of chemicals to decontaminate watercraft and/or equipment after exposure to zebra mussels Dreissena polymorpha is one method of decontamination that has been recommended by multiple government agencies in the United States. The ideal chemical to be used for decontamination would be inexpensive and easily obtained, would have no or limited effect on nontarget species, and would be relatively environmentally friendly. Two chemicals that have been tested are potassium chloride (KCl) and sodium chloride (NaCl). Read More

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http://dx.doi.org/10.1002/aah.10013DOI Listing
March 2018
4 Reads

Identification of Differentially Regulated Edwardsiella ictaluri Proteins During Catfish Serum Treatment.

J Aquat Anim Health 2018 03;30(1):50-56

Department of Basic Sciences, College of Veterinary Medicine, Mississippi State University, Mississippi State, Mississippi, 39762, USA.

Edwardsiella ictaluri is a facultative, intracellular, gram-negative bacterium that causes enteric septicemia of catfish (ESC). Edwardsiella ictaluri is known to be resistant to defense mechanisms present in catfish serum, which might aid in its use of a host's bloodstream to become septicemic. However, the precise mechanisms of the survival of E. Read More

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http://dx.doi.org/10.1002/aah.10007DOI Listing
March 2018
2 Reads

Swimming Endurance in Juvenile Chinook Salmon Infected with Salmincola californiensis.

J Aquat Anim Health 2018 03;30(1):81-89

Department of Fisheries and Wildlife, Oregon State University, 104 Nash Hall, Corvallis, Oregon, 97331, USA.

Juvenile Chinook Salmon Oncorhynchus tshawytscha moving downstream through tributaries of the upper Willamette River basin can spend months in reservoirs created by dams. While residing in the reservoirs, they often obtain heavy infections of the freshwater parasitic copepod Salmincola californiensis. The physiologic effect these parasites have on salmonids is poorly understood. Read More

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http://dx.doi.org/10.1002/aah.10010DOI Listing
March 2018
5 Reads

Comparison of Sampling and Detection Methods for Chinook Salmon and Steelhead Naturally Infected with Myxobolus cerebralis.

J Aquat Anim Health 2018 03;30(1):57-64

Idaho Department of Fish and Game, Eagle Fish Health Laboratory, 1800 Trout Road, Eagle, Idaho, 83616, USA.

Myxobolus cerebralis (Mc) is a myxozoan parasite causing whirling disease in hatchery- and natural-origin salmonids. To minimize spread of this parasite and the incidence of its associated disease, fish health professionals routinely screen fish for Mc before stocking or moving the fish to Mc-free waters. Sample collection for Mc traditionally entails lethal sampling of cranial tissue followed by pepsin-trypsin digest (PTD) and screening of the sample for mature myxobolid myxospores (PTD method); however, nonlethal sampling methods would be advantageous in some circumstances, such as when dealing with rare or otherwise valuable fish. Read More

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http://dx.doi.org/10.1002/aah.10008DOI Listing
March 2018
3 Reads

High-Prevalence and Low-Intensity Ichthyophonus Infections in Pacific Halibut.

J Aquat Anim Health 2018 03;30(1):13-19

International Pacific Halibut Commission, 2320 West Commodore Way, Suite 300, Seattle, Washington, 98199, USA.

Ichthyophonus occurred at high prevalence but low intensity in Pacific Halibut Hippoglossus stenolepis throughout the West Coast of North America, ranging from coastal Oregon to the Bering Sea. Infection prevalence in adults was variable on spatial and temporal scales, with the lowest prevalence typically occurring on the edges of the geographic range and highest prevalence consistently occurring inside Prince William Sound, Alaska (58-77%). Additionally, intra-annual differences occurred at Albatross-Portlock, Alaska (71% versus 32% within 2012), and interannual differences occurred along coastal Oregon (50% in 2012 versus 12% in 2015). Read More

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http://dx.doi.org/10.1002/aah.10011DOI Listing
March 2018
3 Reads

Subyearling Siberian Sturgeon Acipenser baeri Fed a Diet Supplemented with ImmunoGen: Effects on Growth Performance, Body Composition, and Hematological and Serum Biochemical Parameters.

J Aquat Anim Health 2018 Jun 8;30(2):155-163. Epub 2018 May 8.

Sturgeon Propagation and Restocking of the Shahid Beheshti Complex, Rasht, Iran.

In this research, the effect of ImmunoGen (IMNO) on the growth indices, hematological parameters, and carcass composition of Siberian Sturgeon Acipenser baeri was investigated. After acclimation, fish (274.8 ± 16. Read More

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http://dx.doi.org/10.1002/aah.10019DOI Listing
June 2018
6 Reads