| Texto completo | |
| Autor(es): |
Ribeiro, Luisa P.
;
Ernetti, Julia R.
;
Ruggeri, Joice
;
Jenkinson, Thomas S.
;
Loyau, Adeline
;
Butler, Helen
;
Cheng, Tina
;
Schmeller, Dirk S.
;
James, Timothy Y.
;
Toledo, Luis Felipe
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Biological Conservation; v. 313, p. 13-pg., 2025-10-17. |
| Resumo | |
The amphibian-killing fungus Batrachochytrium dendrobatidis (Bd) comprises multiple genetic lineages, including the globally distributed and highly virulent Global Panzootic Lineage (Bd-GPL), as well as geographically restricted lineages such as Bd-BRAZIL, whose evolutionary history and dispersal patterns remain poorly understood. Here, we propose and explore the hypothesis that Bd-BRAZIL originated in Brazil and was subsequently dispersed to other regions via the international bullfrog trade. To investigate this, we integrated non-invasive genetic techniques applied to museum specimens, global records of Bd occurrence, genotypic and phylogenetic analyses, and historical trade data. Bullfrogs were selected as a focal species due to their known tolerance to Bd, relevance in global trade, and unique role as the only amphibian species farmed in Brazil. Our findings are consistent with this hypothesis, supported by: i) historical trade connections between Brazil and East Asia; ii) detection of Bd-BRAZIL in bullfrogs exported from South America to the USA; iii) high prevalence of this lineage in wild frogs and farmed bullfrogs in Brazil; and iv) presence of Bd-BRAZIL in Brazilian native anurans before the arrival of bullfrogs in South America. These results highlight the potential role of international amphibian trade in the spread of Bd lineages and underscore the need for strengthened import regulations and pathogen screening protocols. Further studies with expanded geographic and temporal sampling, as well as high-resolution genomic tools, are needed to refine our understanding of Bd-BRAZIL's origin, spread, and ecological consequences for biodiversity. (AU) | |
| Processo FAPESP: | 18/23622-0 - Implicações do comércio nacional e internacional de Rã-Touro na dispersão e tolerância adquirida ao fungo quitrídio e medidas para conservação de anuros |
| Beneficiário: | Luisa de Pontes Ribeiro |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 20/02994-7 - Variação altitudinal de Batrachochytrium dendrobatidis em anfíbios continentais e insulares |
| Beneficiário: | Julia Renata Ernetti |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 17/01917-6 - Interação entre o Batrachochytrium dendrobatidis e o Ranavírus em assembleias de anuros do Sul da Mata Atlântica |
| Beneficiário: | Joice Ruggeri Gomes |
| Modalidade de apoio: | Bolsas no Brasil - Pós-Doutorado |
| Processo FAPESP: | 22/11096-8 - Da história natural à conservação dos anfíbios brasileiros |
| Beneficiário: | Luis Felipe de Toledo Ramos Pereira |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |