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Interaction between the chytrid Batrachochytrium dendrobatidis and the Ranavirus in anuran assemblages from the Southern Atlantic forest

Grant number: 17/01917-6
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): May 01, 2017
Effective date (End): January 22, 2021
Field of knowledge:Biological Sciences - Ecology
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Luis Felipe de Toledo Ramos Pereira
Grantee:Joice Ruggeri Gomes
Home Institution: Instituto de Biologia (IB). Universidade Estadual de Campinas (UNICAMP). Campinas , SP, Brazil
Associated scholarship(s):18/05217-1 - Changes in the skin microbiome composition of anurans infected with Batrachochytrium dendrobatidis (Chytridiomycota) and ranavirus (Iridoviridae), BE.EP.PD


Among the many threats to the global biodiversity, emerging infectious diseases are considered the main causes. Ranavirus (Rv) and Batrachochytrium dendrobatidis (Bd) are responsible for most declines of amphibian populations, which is the most threatened vertebrate taxa. Both Bd and Rv are spread via water and via direct contact with a sick individual, making dispersion extremely effective. The American bullfrog (Lithobates catesbeianus) is usually tolerant to both Bd and Rv, and is thought to be a carrier for these pathogenic agents. The bullfrog trade for food leads to a global movement of Bd and Rv, which can contribute to the introduction of such pathogenic agents into new regions and sensitive populations. In Brazil, well-established bullfrog populations can be found in the Atlantic Forest, where the distribution of Bd is widespread. However, the knowledge on Rv is limited to bullfrog farms, and the interaction between the two pathogens was never explored in Brazil. Therefore, we will investigate the presence of Rv in areas where bullfrogs are abundant. As coinfection of these two pathogens has been reported for amphibian species in other regions of the world, and it can intensify amphibian populational declines, we will also sample anuran specimens in order to detect the presence of both microorganisms. By doing that, we will be able to identify the virus dynamics in different species and habitats, and the interaction between Bd and Rv in anuran species from this biome. Consequences of coinfection will be discussed in order to help on amphibian conservation action plans. (AU)

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Scientific publications (5)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
AUGUSTO-ALVES, GUILHERME; RUGGERI, JOICE; DA SILVA MARTINS, ANA GLAUCIA; ROSA DOMINGOS, ADAO HENRIQUE; SANTOS, ISAIAS; TOLEDO, LUIS FELIPE. Leptodactylus flavopictus: temporal calling activity and tadpole redescription. SALAMANDRA, v. 56, n. 2, p. 123-134, MAY 15 2020. Web of Science Citations: 0.
RUGGERI, JOICE; DA SILVA MARTINS, ANA GLAUCIA; ROSA DOMINGOS, ADAO HENRIQUE; SANTOS, ISAIAS; VIROOMAL, IMRAN BHARAT; TOLEDO, LUIS FELIPE. Seasonal prevalence of the amphibian chytrid in a tropical pond-dwelling tadpole species. DISEASES OF AQUATIC ORGANISMS, v. 142, p. 171-176, 2020. Web of Science Citations: 0.
KIRCHMEYER, JULIANA; RUGGERI, JOICE; GOMES, MARCIA DOS REIS; DE CARVALHO-E-SILVA, SERGIO POTSCH. The Tadpole of Scinax cardosoi (Carvalho-e-Silva and Peixoto, 1991), with Description of Internal Oral Morphology and Taxonomic Considerations (Anura: Hylidae ). South American Journal of Herpetology, v. 14, n. 3, p. 188-195, DEC 2019. Web of Science Citations: 0.
RUGGERI, JOICE; RIBEIRO, LUISA P.; PONTES, MARIANA R.; TOFFOLO, CARLOS; CANDIDO, MARCELO; CARRIERO, MATEUS M.; ZANELLA, NOELI; SOUSA, RICARDO L. M.; TOLEDO, LUIS FELIPE. Discovery of Wild Amphibians Infected with Ranavirus in Brazil. JOURNAL OF WILDLIFE DISEASES, v. 55, n. 4, p. 897-902, OCT 2019. Web of Science Citations: 0.
RUGGERI, JOICE; DE CARVALHO-E-SILVA, SERGIO POTSCH; JAMES, TIMOTHY Y.; TOLEDO, LUIS FELIPE. Amphibian chytrid infection is influenced by rainfall seasonality and water availability. DISEASES OF AQUATIC ORGANISMS, v. 127, n. 2, p. 107-115, JAN 31 2018. Web of Science Citations: 5.

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