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Field and laboratory evaluation of the microsporidia parasite, Heterosporis sutherlandae Prevalence, severity, and transmission J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-12-28 Megan M. Tomamichel; Paul A. Venturelli; Nicholas B.D. Phelps
Heterosporis sutherlandae is an invasive microsporidian parasite in the Great Lakes region of North America that infects the skeletal muscle of numerous fish species, rendering the filet unfit for human consumption. Although H. sutherlandae has been identified as a pathogen of concern by state management agencies, there is little information to inform regulation and intervention.
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Hematology and Clinical Biochemistry Profiles in Antillean Manatee Trichechus manatus manatus from Different Types of Captivity and Free Living in Northeast Brazil J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-10-24 Marcos A. Mendonça; Maisa S. Fonseca; Fernanda L. N. Attademo; Franciane S. Marques; Maria C. C. Ayres; Thiago D. Barral; Roberto Meyer; Ricardo D. Portela
The Antillean manatee Trichechus manatus manatus can be found along the northern and northeastern coasts of Brazil. Previous studies on the clinical biochemistry of these animals were conducted in North America and the Caribbean, whereas little is known regarding these parameters in South American manatee populations. Accordingly, the objective of the present study was to examine the hematology and
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Reference Intervals for Blood Analytes of Adult Aquarium‐Housed Russian Sturgeon (Acipenser gueldenstaedtii) J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-10-23 Stephen E. Cassle; Roy P.E. Yanong; Deborah B. Pouder; Carlos Rodriguez; Natalie Mylniczenko; Patrick M. Thompson; Natalie K. Stilwell; Kathy J. Heym; Todd Harmon; Nicole I. Stacy
Russian or Danube sturgeon (Acipenser gueldenstaedtii) are an important, critically endangered roe‐producing species. Despite a wealth of knowledge pertaining to other members of Acipenseridae there is very limited published information regarding baseline blood analytes in Russian sturgeon. The objectives of this study were 1) to establish reference intervals for a suite of hematological and biochemical
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Hematology and Biochemistry Panel Reference Intervals for Captive Saddleback Amphiprion polymnus and Tomato Clownfish Amphiprion frenatus. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-09-07 Sarah E Wright,Nicole I Stacy,Roy P Yanong,Reilee N Juhl,Gregory A Lewbart
Reference intervals of blood analytes are important diagnostic tools that clinicians use as a basis for making clinical decisions and that have been documented for many fish species. Although the effects of dietary supplementation on hematology and blood biochemistry variables in clownfish have been shown, there are no published reference intervals to date for routine hematology and blood biochemistry
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Histologic observations of dermal wound healing in a free ranging blacktip shark Carcharhinus limbatus from the southeastern U.S. Atlantic coast: a case report. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-09-07 Joanna Borucinska,Douglas H Adams,Bryan S Frazier
Despite indications that sharks have an exceptional capacity to heal from traumatic injuries, no detailed microscopic observations of integumental wounds have been reported for sharks. This study details the histopathological features of such wounds in a free‐ranging shark. An adult male Blacktip Shark Carcharhinus limbatus was collected in 2017 during fisheries‐independent sampling efforts in the
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Impact of Vaccination and Pathogen Exposure Dosage on Shedding Kinetics of Infectious Hematopoietic Necrosis Virus (IHNV) in Rainbow Trout. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-08-29 Darbi R Jones,Barbara J Rutan,Andrew R Wargo
Vaccine efficacy in preventing clinical disease has been well characterized. However, vaccine impacts on transmission under diverse field conditions, such as variable pathogen exposure dosages, are not fully understood. We evaluated the impacts of vaccination on disease‐induced host mortality and shedding of infectious hematopoietic necrosis virus (IHNV) in Rainbow Trout Oncorhynchus mykiss. Fish,
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Intracoelomic- and Intramuscular-Injection Challenge Model of Piscine Streptococcosis in White Sturgeon Fingerlings. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-08-26 Diem Thu Nguyen,David Marancik,Esteban Soto
Streptococcus iniae is a zoonotic pathogen and one of the major aetiologic agents of streptococcosis. In White Sturgeon Acipenser transmontanus, S. iniae infection typically presents as a necrotizing and heterophilic myositis, causing 30–50% mortality in infected fish. To gain a better understanding of the pathogenesis of streptococcosis in White Sturgeon, and to identify the experimental route of
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Effects of Yeast Autolysate in the Practical Diet on the Growth Performance, Immune Response, and Disease Resistance of Pacific White Shrimp. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-08-16 Shuoli Ma,Xiaoxia Wang,Weihua Gao,Weiqi Xu,Wenbing Zhang,Kangsen Mai
The present study was conducted to investigate the effects of supplementing the practical diet with yeast autolysate (YA) on the growth performance, immunity, and disease resistance of Pacific white shrimp Litopenaeus vannamei. Four isonitrogenous and isolipidic practical diets were formulated. The relatively high‐fish‐meal control diet contained 25% fish meal without YA supplementation (E1). The other
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Characterization of Myostain (MSTN) and Myogenic Differentiation Antigen (MyoD) and the Effect of Dexamethasone on Their Expression in Large‐Scale Loach Paramisgurnus dabryanus J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-08-15 Zongjun Du; Tianzhu Wang; Wei Ming; Wei Luo; Huaming Xu; Rongnan Lin; Anxiang Wen
Myostatin (MSTN) and myogenic differentiation antigen (MyoD) play an essential role in specification and differentiation of skeletal muscle. However, the role of stress in the regulation of MyoD and MSTN has not been fully revealed and more evidence should be provided. Here, we reported the cloning and expressional analyses of MSTN and MyoD in Large‐scale Loach Paramisgurnus dabryanus (hereafter PdMSTN
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The Efficacy of Geraniol and ß-Citronellol against Freshwater and Marine Monogeneans. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-08-13 Francisco N Morales-Serna,Juan M Martínez-Brown,Anaguiven Avalos-Soriano,Sara Sarmiento-Vázquez,Zaira L Hernández-Inda,Rosa M Medina-Guerrero,Emma J Fajer-Ávila,Leonardo Ibarra-Castro
Monogeneans are parasitic flatworms that may be a threat for finfish aquaculture. In this study, the anthelmintic activity of two terpenes, geraniol and β‐citronellol, was tested in vitro against ancyrocephalin and diplectanid monogeneans. Experiments were performed in both water and a culture medium. We observed that monogeneans in culture medium may be more tolerant to treatments compared with bioassays
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Effects of Hatchery Rearing Density, Handling, and Nutrition on Renibacterium salmoninarum Infection Prevalence in Juvenile Chinook Salmon. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-06-26 Douglas L Larson,Mohamed Faisal,Robert J Tempelman,Hao Yu,Kim T Scribner
Bacterial kidney disease, caused by Renibacterium salmoninarum (RS), is a chronic and often fatal disease of salmonid species, and can be particularly harmful to hatchery‐reared Chinook Salmon Oncorhynchus tshawytscha. A considerable amount of research has focused on the prevention of vertical and horizontal transmission; however, a comparatively little amount has investigated factors that increase
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Genotoxicity and Oxidative Stress Evaluations in Juvenile African Catfish Clarias gariepinus (Burchell 1822) Exposed to NPK Fertilizer. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-06-07 Ebeh Helen N,Adegoke Nathan A,Ugwu Mathias N,Christopher Didigwu Nwani
Juvenile African Catfish (also known as Sharptooth Catfish) Clarias gariepinus were exposed to 2.26, 4.52, and 11.30 mg/L NPK (15‐15‐15) fertilizer for 21 d followed by 7 d of recovery to assess the genotoxic effects of the fertilizer in erythrocytes. Biomarkers of oxidative stress were evaluated in the liver and gill tissues. The fertilizer induced micronuclei formation with maximum effects on day
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Abalone Withering Syndrome Disease Dynamics: Infectious Dose and Temporal Stability in Seawater. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-04-27 Lisa M Crosson,Nina S Lottsfeldt,Mariah E Weavil-Abueg,Carolyn S Friedman
Withering syndrome (WS) is a chronic bacterial disease that affects numerous northeastern Pacific abalone Haliotis spp. The causative agent of WS is an obligate intracellular Rickettsiales‐like bacterium (WS‐RLO) that remains unculturable, thereby limiting our understanding of WS disease dynamics. The objectives of our study were to (1) determine the temporal stability of WS‐RLO DNA outside of its
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Vaccination of Tilapia against Motile Aeromonas Septicemia: A Review. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-04-24 Md Shirajum Monir,Sabri Mohd Yusoff,Aslah Mohamad,M Y Ina-Salwany
The production of tilapia Oreochromis spp. is rapidly growing throughout the world, but atypical motile aeromonad septicemia (MAS) is a current threat to the tilapia farming industry. The etiological agent of this disease is usually Aeromonas hydrophila. Mortality rates due to MAS are frequently high, resulting in a devastating negative impact on this industry worldwide; therefore, proper control measures
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Efficacy of a Modified Health Assessment Utilized on Two Genetically Distinct Stocks of Rainbow Trout. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-04-24 Laura Martinelli,Olivia Harris,Michael T Collins,Myron Kebus
The Rainbow Trout Oncorhynchus mykiss is a salmonid fish that is maintained in aquaculture facilities and used as a source of protein around the world. Veterinarians need accurate, efficient tools and straightforward assessments to evaluate the health status of fish, like Rainbow Trout, that are cultivated on farms. In this study, two genetically distinct broodstock lines of Rainbow Trout originally
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Serum Protein Analysis of Nurse Sharks. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-03-11 Leila AtallahBenson,Liza Merly,Carolyn Cray,Neil Hammerschlag
Serum protein electrophoresis (EPH) is used to assess relative concentrations of blood proteins in clinical and biological studies. Serum EPH fractions have been determined for elasmobranchs using mammalian albumin, alpha 1‐, alpha 2‐, beta‐, and gamma‐globulin fractions, and have been deemed fractions 1 through 5, respectively. However, serum EPH fraction concentration reference intervals (RIs) have
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Histopathologic Prevalence and Severity of Testicular Oocytes in Smallmouth Bass from Two Archival Collections. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-02-20 K Christiana Grim,Eileen E Henderson,Marilyn J Wolfe,Jeffrey C Wolf
During recent decades, survey studies have documented the widespread presence of oocytes in the testes of male Smallmouth Bass Micropterus dolomieu collected from surface waters throughout the United States. There are few published reports of testicular oocytes (TO) in Smallmouth Bass before the 1990s, so it is difficult to know how long this has been occurring. Consequently, this study was conducted
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Genetic Diversity of Cyprinid Herpesvirus 3 from Different Geographical Locations during 1999-2019 in the United States of America. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-02-18 Khalid Shahin,Esteban Soto,Beatriz Martínez-López,Samantha Barnum
Cyprinid herpesvirus 3, also known as koi herpesvirus (KHV), is an important pathogen in common and koi carp Cyprinus carpio, varieties. Two main genotypes of KHV have been reported worldwide that are associated with Asian and European origins. In the USA, outbreaks of KHV diseases have been reported in different states since the early 1990s; however, the diversity of KHV is unknown. In the current
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The Formation, Persistence, and Resistance to Disinfectant of the Erysipelothrix piscisicarius Biofilm. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-01-28 Eric K Pomaranski,Esteban Soto
Erysipelothrix piscisicarius is an emergent pathogen in fish aquaculture, particularly in the ornamental fish trade. Very little is known on the biology of this pathogen; however, the recurrence of infection and disease outbreaks after removing the fish from a system and disinfecting the tank suggest its environmental persistence. Moreover, biofilm lifestyle in E. piscisicarius has been suspected but
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Sequence Analysis of Plasmids in Vibrio anguillarum from Different Fish and Locations. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-01-27 Tasmina Akter,Mikkel Lindegaard,Karl Pedersen,Mikael L Strube,Troels Ronco,Inger Dalsgaard
The genetic diversity of Vibrio anguillarum pJM1‐like plasmids was investigated. Plasmids were isolated from 18 V. anguillarum serovar O1 strains collected from different geographic locations and fish species. The plasmids were sequenced and compared with the complete sequence of the published virulence plasmid pJM1. All 18 strains contained pJM1‐like plasmids with approximately 65 kbp and all plasmids
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Assessment of a Serologic Diagnostic Test and Kinetics of Antibody Development in Northern Pike Experimentally Infected with Viral Hemorrhagic Septicemia Virus. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-01-21 Whitney A Thiel,Kathy L Toohey-Kurth,Bridget B Baker,Megan Finley,Tony L Goldberg
Viral hemorrhagic septicemia virus (VHSV) is an ongoing cause of disease and mortality in freshwater fishes across the Great Lakes region of the Midwestern United States. Antibody detection assays such as enzyme‐linked immunosorbent assay (ELISA) are nonlethal serological methods that can have significantly shorter turnaround times than the current validated viral detection diagnostic methodology for
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The First Detection of Koi Herpesvirus (CyHV3) in Migratory Wild Ducks in North America. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-01-21 O A Torres-Meza,E Loza-Rubio,J J Martínez-Maya,G García-Espinosa
A viromics study on the intestinal contents of migratory wild ducks of the genera Anas, Mareca, Spatula, and Oxyura during their winter stay in Mexico showed the presence of the virus family Alloherpesviridae. The genus Cyprinivirus is part of this family and includes cyprinid herpesvirus 3 (CyHV3). This is the etiological agent of the lethal disease known as koi herpesvirosis, which affects different
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Prevalence and Intensity of Salmincola edwardsii in Brook Trout in Northwest New Brunswick, Canada. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2020-01-21 Carson F H White,Michelle A Gray,Karen A Kidd,Michael S Duffy,Jennifer Lento,Wendy A Monk
Parasites can compromise the health and fitness of individual fish, and it is important to generate baseline information that can then be used to document changes in the abundance and distribution of potentially pathogenic parasites. The ectoparasitic copepod Salmincola edwardsii was assessed with respect to prevalence (percentage of infected fish per site), infection intensity (number of parasites
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Changes in Brain Acetylcholinesterase and Oxidative Stress Biomarkers in African Catfish Exposed to Carbendazim. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-11-27 Ifeanyi Christian Ezeoyili,Bernard O Mgbenka,Chinedu Ifeanyi Atama,Godwin I Ngwu,Josephine Chinenye Madu,Christopher Didigwu Nwani
Carbendazim (CBZ) is a widely used, systemic, broad‐spectrum benzimidazole fungicide. It is used worldwide against fungal diseases on a wide range of agricultural products and in domestic gardens. The activities of brain oxidative stress biomarkers and acetylcholinesterase (AChE) in juvenile African Catfish Clarias gariepinus exposed to CBZ were investigated. Juveniles were exposed to sublethal concentrations
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First Record of the Water Mold Achlya bisexualis (Saprolegniaceae) Isolated from Ornamental Fish in South Africa. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-11-25 Mariska Riana Greeff-Laubscher,Kevin William Christison,Nicholas Jacobus Smit
The order Saprolegniales (Class Oomycota) is a group of fungus‐like eukaryotic microorganisms that have been associated with infections in fish and fish eggs. Infections with microorganisms from this order are clearly evident because they have a cotton wool‐like appearance. The aim of this study was to characterize and identify an oomycete that was isolated from the eye of an Orange Blotched Peacock
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Phenotypic and Molecular Characterization of Lacinutrix venerupis Isolated from Atlantic Horse Mackerel Trachurus trachurus. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-11-19 Clara Fernández-Álvarez,Ysabel Santos
The aim of the present study was to characterize two gram‐negative bacterial strains that were isolated from diseased Atlantic Horse Mackerel Trachurus trachurus in 2017. Based on the results obtained from the biochemical and chemotaxonomic characterization, the isolates were identified as Lacinutrix spp. The highest similarity of the 16S rRNA gene sequences was obtained with the strain L. venerupis
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The Occurrence of Vibrionaceae, Staphylococcaceae, and Enterobacteriaceae in Green Turtle Chelonia mydas Rearing Seawater. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-11-11 Thanaporn Chuen-Im,Dolaphum Suriyant,Koraphan Sawetsuwannakun,Nakarin Kitkumthorn
In this study, levels of Vibrionaceae, Staphylococcaceae, and Enterobacteriaceae were observed in seawater from juvenile green turtle Chelonia mydas rearing tanks and in the incoming coastal seawater (the water supply). Bacterial loads were compared between the incoming coastal seawater and two different rearing conditions: in cement tanks at a low stocking density and in fiberglass tanks at a high
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Isolation and Characterization of a Ranavirus Associated with Disease Outbreaks in Cultured Hybrid Grouper (♀ Tiger Grouper Epinephelus fuscoguttatus × ♂ Giant Grouper E. lanceolatus) in Guangxi, China. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-11-06 Hehe Xiao,Mingzhu Liu,Siqiao Li,Deqiang Shi,Donglin Zhu,Ke Ke,Youhou Xu,Dexin Dong,Libo Zhu,Qing Yu,Pengfei Li
An outbreak of suspected iridovirus disease in cultured hybrid grouper (♀Tiger Grouper Epinephelus fuscoguttatus × ♂ Giant Grouper Epinephelus lanceolatus) occurred in the Guangxi Province in July, 2018. In this study, grouper iridovirus Guangxi (SGIV‐Gx) was isolated from diseased hybrid grouper that were collected from Guangxi. Cytopathic effects were observed and identified in grouper spleen cells
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Covadonga (Cova) Rodrigues Arias, 1970-2019. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-09-10 Stacey A LaFrentz,Benjamin R LaFrentz
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High prevalence and low intensity Ichthyophonus infections in Pacific Halibut (Hippoglossus stenolepis). J. Aquat. Anim. Health (IF 1.306) Pub Date : 2017-10-14 Paul K Hershberger,Jacob L Gregg,Claude L Dykstra
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
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Humoral immune responses to select marine bacteria in loggerhead, Caretta caretta, and Kemp's ridley, Lepidochelys kempii, sea turtles from the south eastern United States. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2017-10-13 Maria L Rodgers,Catherine A Toline,Charles D Rice
Serum from Kemp's ridley and loggerhead sea turtles was collected in summers of 2011, 2012, and 2013. Serum IgY recognition of lysate proteins from nine bacteria species and whole bacteria-specific IgY titers to these pathogens were quantified. Serum and purified IgY recognized proteins of all bacteria, with protein recognition in some species more pronounced than others. Circulating IgY titers against
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Toxicity of Potassium Chloride Compared to Sodium Chloride for Zebra Mussel Decontamination. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2017-10-06 Eric A Davis,Wai Hing Wong,Willard N Harman
Decontamination of watercraft and/or equipment following exposure to zebra mussels with the use of chemicals is one method of decontamination that has been recommended in the United States by multiple government agencies. The ideal chemical to be used for decontamination would be inexpensive, easily obtained, have no or limited effect on nontarget species, and relatively environmentally friendly. Two
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Comparisons of Stereological and Other Approaches for Quantifying Macrophage Aggregates in Piscine Spleens. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-10-21 Mark A Matsche,Vicki S Blazer,Patricia M Mazik
Macrophage aggregates (MAs) are focal accumulations of pigmented macrophages in the spleen and other tissues of fish. A central role of MAs is the clearance and destruction of degenerating cells and recycling of some cellular components. Macrophage aggregates also respond to chemical contaminants and infectious agents and may play a role in the adaptive immune response. Tissue damage or physiological
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Transmission of a Freshwater Isolate of Ichthyophonus (Clade C) to Two Marine Fish Species. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-10-09 R M Kocan,A J Kocan,S R Reichley
The ingestion of infected prey is the most recognizable mode of transmission for Ichthyophonus, but because this mode of transmission is unidirectional from small prey fish to larger predators, it cannot sustain the parasite within or among populations nor does it explain transmission to planktivores. Recently, waterborne transmission was demonstrated in cultured Rainbow Trout Oncorhynchus mykiss,
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Efficacy of Rose Myrtle Rhodomyrtus tomentosa Seed Extract against Acute Hepatopancreatic Necrosis Disease in Pacific Whiteleg Shrimp Penaeus vannamei. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-09-30 Lua T Dang,Hanh T Nguyen,Ha H Hoang,Ha N T Lai,Hai T Nguyen
Acute hepatopancreatic necrosis disease (AHPND) is a new emerging bacterial disease that has been recently reported to cause mass mortalities in Pacific whiteleg shrimp Penaeus vannamei. Antibiotics have been used to treat bacterial diseases in shrimp, but most of them have been ineffective and have resulted in drug residues in the harvested shrimp products. In this study, an alternative approach was
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A Comparison of Nonlethal and Destructive Methods for Broad-Based Infectious Agent Screening of Chinook Salmon Using High-Throughput qPCR. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-09-18 Amy K Teffer,Kristina M Miller
Molecular tools, such as high‐throughput quantitative polymerase chain reaction (HT‐qPCR), are useful for monitoring multiple infectious agents in wild animal populations (i.e., broad‐based screening). If destructive tissue samples cannot be obtained due to experimental design requirements (e.g., bio‐telemetry; holding with repeated biopsy) or the conservation status of host species, then nonlethally
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Anesthetic Efficiency of Three Medicinal Plant Oils for Aquatic Species: Coriander Coriandrum sativum, Linaloe Tree Bursera delpechiana, and Lavender Lavandula hybrida. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-09-12 Erkan Can,Volkan Kızak,Şafak Seyhaneyıldız Can,Esin Özçiçek
This study evaluated the potential of three essential oils (EOs) that were obtained from coriander Coriandrum sativum (CEO), linaloe tree Bursera delpechiana (BEO), and lavender Lavandula hybrida (LEO) as anesthetic agents. Convict Cichlids Amatitlania nigrofasciata (Günther 1867) were exposed to eight concentrations of anesthetic (50, 75, 100, 125, 150, 200, 250, and 300 μL/L). After exposure to the
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Antibiotic Use by Small-Scale Farmers for Freshwater Aquaculture in the Upper Mekong Delta, Vietnam. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-09-11 Gunilla Hallenberg Ström,Hanna Björklund,Andrew C Barnes,Chau Thi Da,Nguyen Huu Yen Nhi,Trinh Thi Lan,Ulf Magnusson,Anna Norman Haldén,Sofia Boqvist
This study describes antibiotic use by small‐scale freshwater aquaculture farmers in the upper Mekong Delta in southwestern Vietnam and the knowledge and practices surrounding the cause and prevention of aquaculture disease in that region. Forty five farmers were included in the study, of which 19 (42%) cultivated tilapia Oreochromis spp., 13 (29%) Striped Catfish Pangasianodon hypophthalmus and 13
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The Development and Characterization of a Cell Culture System from Indian Mud Crabs Scylla serrata. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-08-22 Selvaraj Sivakumar,T Raja Swaminathan,Raj Kumar,Natarajan Kalaimani
Commercially available culture media and supplements were tested for their potential to produce primary cell cultures from tissues of Indian mud crabs Scylla serrata. Eight commercially available culture media from Sigma‐Aldrich (Leibovitz's L‐15, Medium 199, Grace's Insect Medium, Minimal Essential Medium, Dulbecco's Modified Eagle Medium, TC‐100 Insect Medium, IPL‐41 Insect Medium, and Roswell Park
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Inhibition Activity of Compounds and Bacteriophages against Flavobacterium psychrophilum Biofilms In Vitro. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-06-19 Anna Papadopoulou,Inger Dalsgaard,Tom Wiklund
Flavobacterium psychrophilum produces biofilms under laboratory conditions, and it has been inconclusively suggested that F. psychrophilum biofilms can be a potential reservoir for transmission of the pathogen to a fish population under fish farming conditions. Therefore, there is a need for anti‐biofilm compounds. The main aim of this study was to determine the anti‐biofilm properties of certain compounds
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Intra-Annual Changes in Waterborne Nanophyetus salmincola. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-06-19 P K Hershberger,R L Powers,B L Besijn,J Rankin,M Wilson,B Antipa,J Bjelland,A H MacKenzie,J L Gregg,M K Purcell
An analysis of daily water samples collected from an index site on Big Soos Creek, Washington indicated intra‐annual differences in the concentrations of waterborne Nanophyetus salmincola. Waterborne concentrations, quantified as gene copies/L, peaked during the fall (October–November 2016), decreased to very low concentrations over the winter (January–March 2017), and then increased in the spring
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Coelomic Fluid Evaluation in Clinically Normal Ochre Sea Stars Pisaster ochraceus: Cell Counts, Cytology, and Biochemistry Reference Intervals. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-06-06 Sarah J Wahltinez,Nicole I Stacy,Lesanna L Lahner,Alisa L Newton
Coelomic fluid sampling is a noninvasive technique that is used to access the body fluid of sea stars for diagnostics and research. Given recent mortality events including sea star wasting disease, which has killed millions of sea stars along the Pacific coast since 2013, there is a need for validated diagnostic tests to evaluate sea star health. The objectives of this study were to establish coelomic
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Arrested Development of Henneguya ictaluri (Cnidaria: Myxobolidae) in ♀ Channel Catfish × ♂ Blue Catfish Hybrids. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-06-03 Thomas G Rosser,Lester H Khoo,David J Wise,Charles C Mischke,Terrence E Greenway,Neely R Alberson,Stephen R Reichley,Ethan T Woodyard,James Steadman,Cynthia Ware,Linda M Pote,Matt J Griffin
Henneguya ictaluri is the etiologic agent of proliferative gill disease (PGD) in farm‐raised Channel Catfish Ictalurus punctatus and hybrid catfish in the southeastern United States, and significant annual losses are attributed to this disease. Research suggests that H. ictaluri infection dynamics in Blue Catfish I. furcatus and hybrid catfish (Channel Catfish × Blue Catfish) differ from those in Channel
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Plasma Bleomycin Concentrations during Electrochemotherapeutic Treatment of Fibropapillomas in Green Turtles Chelonia mydas. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-05-17 Kyle A Donnelly,Mark G Papich,Bette Zirkelbach,Terry Norton,Anna Szivek,Brooke Burkhalter,Joseph A Impellizeri,Nicole I Stacy
Fibropapillomatosis of sea turtles is traditionally treated with surgical debulking techniques that are often associated with prolonged healing and tumor recurrence. Electrochemotherapy was recently described for green turtles Chelonia mydas and can be an alternative to surgery and even general anesthesia. The objectives of this study were to replicate an electrochemotherapy protocol from a previous
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Effect of a Misoprostol/Phenytoin Gel on Experimentally Induced Wounds in Brook Trout-A Preliminary Study. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-05-16 Thomas Coutant,Claire Vergneau-Grosset,Stéphane Lair
Topical treatment for wound management in fish is challenging due to their aquatic life. The objective of the present study was to assess the effect of a topical gel containing misoprostol and phenytoin on the healing of skin wounds in Brook Trout Salvelinus fontinalis. Four 16‐ × 8‐mm, full‐thickness wounds were created in each trout. Fish were randomly assigned either to the misoprostol/phenytoin
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Evaluation of Comprehensive Coelomic Fluid Analysis through Coelomic Pore Sampling as a Novel Diagnostic Tool in Elasmobranchs. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-05-11 Kyle A Donnelly,Nicole I Stacy,Tristan L Guttridge,Charlene Burns,Natalie Mylniczenko
The objectives of this study were to describe a minimally invasive coelomic fluid sampling technique in elasmobranchs, to characterize the coelomic fluid composition in clinically normal and abnormal animals, and to compare findings from wild and managed populations. Fluid was collected via the coelomic pore in 89 individuals from 16 species spanning clinically normal and abnormal patients within a
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Differences of Viral Hemorrhagic Septicemia Virus Loads among Organs of Dead and Surviving Olive Flounder Infected by Intramuscular Injection and Immersion Challenge. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-05-08 Soo-Jin Kim,Wi-Sik Kim,Myung-Joo Oh
Viral hemorrhagic septicemia virus (VHSV) is an important viral pathogen in the culture of Olive Flounder Paralichthys olivaceus. Based on cumulative mortality, the virulence of VHSV was found to be highly different depending on challenge routes and exposure doses (using tissue culture infectious dose with 50% endpoint [TCID50]). Olive Flounder were injected with VHSV at 102.5, 104.5, 106.5, and 108
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Environmental Factors Associated with the Presence of Vibrionaceae in Tropical Cage-Cultured Marine Fishes. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-03-25 Nurliyana Mohamad,Muskhazli Mustafa,Mohammad Noor Azmai Amal,Mohd Zamri Saad,Ina Salwany Md Yasin,Nurhidayu Al-Saari
This study investigated the environmental factors associated with the presence of Vibrionaceae in economically important cage‐cultured tropical marine fishes: the Asian Seabass Lates calcarifer, snapper Lutjanus sp., and hybrid grouper Epinephelus sp. Fish sampling was conducted at monthly intervals between December 2016 and August 2017. The body weight and length of individual fish were measured,
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Changes in Hematological Parameters and Heat Shock Proteins in Juvenile Sablefish Depending on Water Temperature Stress. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-03-25 Jun-Hwan Kim,Hee-Ju Park,Do-Hyung Kim,Chul Woong Oh,Jung Sick Lee,Ju-Chan Kang
Juvenile Sablefish Anoplopoma fimbria were used to assess the effects of water temperature (8, 10, 12, 14, 16, 18, and 20°C) on hematological parameters and heat shock proteins 70 and 90 for 4 months. Hematological parameters, including red blood cell count, hematocrit, and hemoglobin, were significantly decreased at 18°C. The inorganic plasma components calcium and magnesium were not altered by water
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Oxidative Status and Digestive Histology of Barramundi Perch in Response to Different Tank Colors. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-28 Ebrahim Sotoudeh,Sosan Feizollahi,Ashkan Banan,Vahid Morshedi,Aali Hosseini
The oxidative status and intestinal and liver histology of Barramundi Perch Lates calcarifer juveniles were investigated in an experiment using different tank colors (black, red, blue, and white) over 6 weeks. It has been previously shown that background color can affect physiological processes in different species. The background colors did not cause significant differences in malondialdehyde, catalase
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Frequency of Occurrence of the Rat Lungworm Parasite in the Invasive Island Apple Snail in South Carolina, USA. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-28 Elizabeth B Underwood,Matt J Walker,Tanya L Darden,Peter R Kingsley-Smith
The rat lungworm 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. One such gastropod is the invasive island apple snail Pomacea maculata, which is native to South America but is
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Biofilm and Sediment are Major Reservoirs of Virulent Aeromonas hydrophila (vAh) in Catfish Production Ponds. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-19 Wenlong Cai,Evelyn Willmon,Francisca A Burgos,Candis L Ray,Terry Hanson,C R Arias
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. The objective of this study
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Traditional Chinese Medicine Enhances Growth, Immune Response, and Resistance to Streptococcus agalactiae in Nile Tilapia. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-15 Emmanuel Delwin Abarike,Jichang Jian,Jufen Tang,Jia Cai,Huang Yu,Lihua Chen
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
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Retrospective and Predictive Investigation of Fish Kill Events. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-08 Nicholas B D Phelps,Irene Bueno,Daniela A Poo-Muñoz,Sarah J Knowles,Sarah Massarani,Rebecca Rettkowski,Ling Shen,Heidi Rantala,Paula L F Phelps,Luis E Escobar
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
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Effects of Parasite Infection and Host Body Size on Habitat Associations of Invasive Aquatic Snails: Implications for Environmental Monitoring. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-05 Lori R Tolley-Jordan,Michael A Chadwick
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
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Immunohistochemical Study of Four Fish Tumors. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-05 C Iaria,A Ieni,I Corti,R Puleio,C Brachelente,G Mazzullo,G Lanteri
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. Diagnoses of papilloma in a Bream
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Variation in Glycogen Distribution among Freshwater Bivalve Tissues: Simplified Protocol and Implications. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-02-04 Barbora Vodáková,Karel Douda
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
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Natural Concurrent Infection of Vibrio harveyi and V. alginolyticus in Cultured Hybrid Groupers in Malaysia. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-01-28 Nurliyana Mohamad,Fauzul Aidil Mohd Roseli,Mohammad Noor Amal Azmai,Mohd Zamri Saad,Ina Salwany Md Yasin,Nor Amalina Zulkiply,Nurrul Shaqinah Nasruddin
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. The affected hybrid groupers displayed lethargy, excessive mucus production, rotten
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Resurgence of Salmonid Herpesvirus-3 Infection (Epizootic Epitheliotropic Disease) in Hatchery-Propagated Lake Trout in Michigan. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-01-25 Mohamed Faisal,Thomas P Loch,Megan Shavalier,Michelle Gunn VanDeuren,Isaac Standish,Andrew Winters,Gavin Glenney,James Aho,Martha Wolgamood,Jan VanAmberg,Edward Eisch,Gary E Whelan
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
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Isolation and Characterization of Flavobacteriaceae from Farmed and Wild Nile Tilapia in Tanzania. J. Aquat. Anim. Health (IF 1.306) Pub Date : 2019-01-09 Elisa Mwega,Duncan J Colquhoun,Huruma Tuntufye,Robinson Mdegela,Stephen Mutoloki,Øystein Evensen,Yngvild Wasteson
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 m2. Pond parameters and fish morphometric data were recorded during sampling. In total, 67 Flavobacterium‐like
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