Ranavirus Outbreak in North American Bullfrogs (<i>Rana catesbeiana</i>), Japan, 2008

Une, Yumi; Sakuma, Akiko; Matsueda, Hiroki; Nakai, Katsuki; Murakami, Masaru

doi:10.3201/eid1507.081636

Cited by 61 publications

(51 citation statements)

References 8 publications

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“…In one recent report, at least 200,000 larvae died within just 24 h (Wheelwright et al 2014 ). There are similar reports of rapid, seasonal outbreaks in wild amphibians in Europe (e.g., Ariel et al 2009a ;Kik et al 2011 ), South and Central America (Fox et al 2006 ;Stark et al 2014 ), and Asia (e.g., Une et al 2009 ), and widespread reports from captive populations that follow similar patterns (Duffus et al 2015 ). Price et al ( 2014 ) recently reported declines in amphibian communities at multiple sites in Spain after the apparent introduction of a novel ranavirus.…”

Section: Ranavirus Epidemiology In Amphibiansmentioning

confidence: 68%

“…1 ). Die-offs have a rapid onset, generally in the summer months, and often progress rapidly, although there are important exceptions to this pattern (e.g., bullfrog [ Lithobates catesbeianus (formerly Rana catesbeiana )] die-offs in Japan and the American Southeast have been noted in October; Hoverman et al 2012 ;Une et al 2009 ). Second, there is a great deal of variability in the outcome of ranavirus epidemics between populations and locations, from no (apparent) mortality to die-offs with few survivors.…”

Section: Summary Of Ranavirus Epidemiologymentioning

confidence: 99%

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Ranavirus Ecology and Evolution: From Epidemiology to Extinction

et al. 2015

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Section: Ranavirus Epidemiology In Amphibiansmentioning

confidence: 68%

Section: Summary Of Ranavirus Epidemiologymentioning

confidence: 99%

Ranavirus Ecology and Evolution: From Epidemiology to Extinction

et al. 2015

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“…has been asked [9][10][11]. To help resolve these problems, researchers have looked for and identified a large number of diverse pathogenic viruses in aquaculture and natural aquatic animals including iridoviruses, herpesviruses, reoviruses and rhabdoviruses; these pathogenic iridoviruses have been found to be the cause of epizootic diseases in aquaculture animals and the global decline of amphibian populations [12][13][14][15]. In the last 10 years especially, more than 100 viral genomes have been genetically characterized via the rapid advances in genome sequencing technologies [16][17][18][19].…”

mentioning

confidence: 99%

Virus genomes and virus-host interactions in aquaculture animals

Zhang

Gui

2015

Sci. China Life Sci.

172

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Over the last 30 years, aquaculture has become the fastest growing form of agriculture production in the world, but its development has been hampered by a diverse range of pathogenic viruses. During the last decade, a large number of viruses from aquatic animals have been identified, and more than 100 viral genomes have been sequenced and genetically characterized. These advances are leading to better understanding about antiviral mechanisms and the types of interaction occurring between aquatic viruses and their hosts. Here, based on our research experience of more than 20 years, we review the wealth of genetic and genomic information from studies on a diverse range of aquatic viruses, including iridoviruses, herpesviruses, reoviruses, and rhabdoviruses, and outline some major advances in our understanding of virus-host interactions in animals used in aquaculture.

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“…4), with occasional intracytoplasmic inclusions in hepatocytes (Green et al, 2002;Une et al, 2009). The livers of moribund and dead tadpoles (EW2, BUE, and DWM) all were strongly positive for ranavirus DNA via PCR.…”

Section: Resultsmentioning

confidence: 99%

LOW DETECTION OF RANAVIRUS DNA IN WILD POSTMETAMORPHIC GREEN FROGS, RANA (LITHOBATES) CLAMITANS, DESPITE PREVIOUS OR CONCURRENT TADPOLE MORTALITY

Forzán

Wood

2013

Journal of Wildlife Diseases

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ABSTRACT:Ranavirus (Iridoviridae) infection is a significant cause of mortality in amphibians. Detection of infected individuals, particularly carriers, is necessary to prevent and control outbreaks. Recently, the use of toe clips to detect ranavirus infection through PCR was proposed as an alternative to the more frequently used lethal liver sampling in green frogs (Rana [Lithobates] clamitans). We attempted reevaluate the use of toe clips, evaluate the potential use of blood onto filter paper and hepatic fine needle aspirates (FNAs) as further alternatives, and explore the adequacy of using green frogs as a target-sampling species when searching for ranavirus infection in the wild. Samples were obtained from 190 postmetamorphic ($1-yr-old) green frogs from five ponds on Prince Edward Island (PEI), Canada. Three of the ponds had contemporary or recent tadpole mortalities due to Frog Virus 3 (FV3) ranavirus. PCR testing for ranavirus DNA was performed on 190 toe clips, 188 blood samples, 72 hepatic FNAs, and 72 liver tissue samples. Only two frogs were ranavirus-positive: liver and toe clip were positive in one, liver only was positive in the other; all blood and FNAs, including those from the two positive frogs, were negative. Results did not yield a definitive answer on the efficacy of testing each type of sample, but resemble what is found in salamanders infected with Ambystoma tigrinum (rana)virus. Findings indicate a low prevalence of FV3 in postmetamorphic green frogs on PEI (#2.78%) and suggest that green frogs are poor reservoirs (carriers) for the virus.

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Ranavirus Outbreak in North American Bullfrogs (Rana catesbeiana), Japan, 2008

Cited by 61 publications

References 8 publications

Ranavirus Ecology and Evolution: From Epidemiology to Extinction

Ranavirus Ecology and Evolution: From Epidemiology to Extinction

Virus genomes and virus-host interactions in aquaculture animals

LOW DETECTION OF RANAVIRUS DNA IN WILD POSTMETAMORPHIC GREEN FROGS, RANA (LITHOBATES) CLAMITANS, DESPITE PREVIOUS OR CONCURRENT TADPOLE MORTALITY

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