Discovery of Wild Amphibians Infected with Ranavirus in Brazil

Ruggeri, Joice; Ribeiro, Luisa P.; Pontes, Mariana Retuci; Toffolo, Carlos; Cândido, Marcelo; Carriero, Mateus Maldonado; Zanella, Noeli; Sousa, Ricardo Luiz Moro de; Toledo, Luı́s Felipe

doi:10.7589/2018-09-224

Cited by 31 publications

(12 citation statements)

References 29 publications

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“…One of the species highlighted so far in this regard is the American bullfrog ( L . catesbeianus ), which seems to have played a key role in spreading the pathogen to new locations (Both et al, 2011 ; Mazzoni et al, 2009 ; Ruggeri et al, 2019 ; Schloegel et al, 2009 , 2010 ). Cultured American bullfrogs often carry ranavirus infection FV3 (Miller et al, 2007 ) and may have served as a vector transmitting the disease to native amphibians and fish in Brazil (Mazzoni et al, 2009 ; Ruggeri et al, 2019 ).…”

Section: Potential Entry Of Ranavirus To Asia Through Cultured Frogs—american Bullfrog ( Lithobates Catesbeianus ) Andmentioning

confidence: 99%

Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia

Herath

Ellepola

Meegaskumbura

2021

Ecology and Evolution

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Ranaviral infections, a malady of ectothermic vertebrates, are becoming frequent, severe, and widespread, causing mortality among both wild and cultured species, raising odds of species extinctions and economic losses. This increase in infection is possibly due to the broad host range of ranaviruses and the transmission of these pathogens through regional and international trade in Asia, where outbreaks have been increasingly reported over the past decade. Here, we focus attention on the origins, means of transmission, and patterns of spread of this infection within the region. Infections have been recorded in both cultured and wild populations in at least nine countries/administrative regions, together with mass die‐offs in some regions. Despite the imminent seriousness of the disease in Asia, surveillance efforts are still incipient. Some of the viral strains within Asia may transmit across host–taxon barriers, posing a significant risk to native species. Factors such as rising temperatures due to global climate change seem to exacerbate ranaviral activity, as most known outbreaks have been recorded during summer; however, data are still inadequate to verify this pattern for Asia. Import risk analysis, using protocols such as Pandora+, pre‐border pathogen screening, and effective biosecurity measures, can be used to mitigate introduction of ranaviruses to uninfected areas and curb transmission within Asia. Comprehensive surveillance using molecular diagnostic tools for ranavirus species and variants will help in understanding the prevalence and disease burden in the region. This is an important step toward conserving native biodiversity and safeguarding the aquaculture industry.

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Section: Potential Entry Of Ranavirus To Asia Through Cultured Frogs—american Bullfrog ( Lithobates Catesbeianus ) Andmentioning

confidence: 99%

Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia

Herath

Ellepola

Meegaskumbura

2021

Ecology and Evolution

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“…Recientemente, individuos de Lithobathes catesbeianus pertenecientes a una colonia en cautiverio en el norte de México, estado de Sinaloa, fueron reportados con la presencia del Ranavirus FV3 (Saucedo et al, 2019). Lo anterior es de suma importancia debido a que Lithobathes catesbeianus es una especie comercial, invasiva y puede actuar como reservorio y transmisor del virus (Ruggeri et al, 2019), por lo que el riesgo de dispersión e ingreso de este patógeno a áreas naturales donde habitan anfibios endémicos es alto y es necesario el aumento de medidas de monitoreo y detección del patógeno.…”

Section: Futuras Direccionesunclassified

Ecología y evolución de enfermedades emergentes en anfibios: una revisión de ranavirus y quitridiomicosis

Basanta¹

2019

Rev Latin Herp

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Las enfermedades infecciosas emergentes son una de las principales causas en el declive de especies de anfibios a nivel global. Estas enfermedades son causadas por patógenos que pueden ampliar rápidamente su rango geográfico y de hospedadores, convirtiéndose en epidémicas. Enfermedades emergentes de anfibios como ranavirus y quitridiomicosis, han ocasionado grandes declives en poblaciones del mundo, donde factores ecológicos y evolutivos están implicados tanto en su emergencia como en la variación en la susceptibilidad de las especies. En este trabajo se presenta una revisión de las enfermedades ranavirus y quitridiomicosis, en relación a los factores ecológicos y evolutivos que caracterizan a estas infecciones, sus efectos sobre las poblaciones de anfibios a nivel mundial, y la posible aplicación de medidas de prevención y conservación.

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“…Since 1980, there have been records of a rapid population decline of nearly 450 anuran species [6][7][8]. The decline of these species can be mainly attributed to habitat loss and pathogens, such as chytrid fungi and Ranavirus [6,7,[9][10][11]. Recently, Ranavirus has been reported in natural populations of frogs in South America, but the effects in wild anuran populations are still unknown [11].…”

Section: Introductionmentioning

confidence: 99%

“…The decline of these species can be mainly attributed to habitat loss and pathogens, such as chytrid fungi and Ranavirus [6,7,[9][10][11]. Recently, Ranavirus has been reported in natural populations of frogs in South America, but the effects in wild anuran populations are still unknown [11]. Unlike Ranavirus, chytrid fungi (Batrachochytrium dendrobatidis) has been commonly reported as a cause of population decline in high altitude locations in Costa Rica and Panama [9].…”

Section: Introductionmentioning

confidence: 99%

Conservation Status of Brachycephalus Toadlets (Anura: Brachycephalidae) from the Brazilian Atlantic Rainforest

2019

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The number of described anurans has increased continuously, with many newly described species determined to be at risk. Most of these new species inhabit hotspots and are under threat of habitat loss, such as Brachycephalus, a genus of small toadlets that inhabits the litter of the Brazilian Atlantic Rainforest. Of 36 known species, 22 were described in the last decade, but only 11 have been assessed according to the IUCN Red List categories, with just one currently listed as Critically Endangered. All available data on occurrence, distribution, density, and threats to Brachycephalus were reviewed. The species extent of occurrence was estimated using the Minimum Convex Polygon method for species with three or more records and by delimiting continuous areas within the altitudinal range of species with up to two records. These data were integrated to assess the conservation status according to the IUCN criteria. Six species have been evaluated as Critically Endangered, five as Endangered, 10 as Vulnerable, five as Least Concern, and 10 as Data Deficient. Deforestation was the most common threat to imperiled Brachycephalus species. The official recognition of these categories might be more readily adopted if the microendemic nature of their geographical distribution is taken into account.

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Discovery of Wild Amphibians Infected with Ranavirus in Brazil

Cited by 31 publications

References 29 publications

Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia

Patterns of infection, origins, and transmission of ranaviruses among the ectothermic vertebrates of Asia

Ecología y evolución de enfermedades emergentes en anfibios: una revisión de ranavirus y quitridiomicosis

Conservation Status of Brachycephalus Toadlets (Anura: Brachycephalidae) from the Brazilian Atlantic Rainforest

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