Biotic and abiotic determinants of Batrachochytrium dendrobatidis infections in amphibians of the Brazilian Atlantic Forest

Carolina Lambertini, C. Guilherme Becker, Anat M. Belasen, Anyelet Valencia-Aguilar, Carlos Henrique L. Nunes-de-Almeida, Clarisse M. Betancourt-Román, David Rodriguez, Domingos da Silva Leite, Igor S. Oliveira, João Luiz Gasparini, Joice Ruggeri, Tamí Mott, Thomas S. Jenkinson, Timothy Y. James, Kelly R. Zamudio, Luís Felipe Toledo

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Latitudinal gradients are linked to the dynamics of infectious diseases. Both prevalence and infection intensity of the amphibian-killing fungus, Batrachochytrium dendrobatidis (Bd), vary with latitude. Here, we tested whether abiotic and biotic factors are associated with Bd infection prevalence and intensity along a large latitudinal gradient across the Brazilian Atlantic Forest. We detected a positive association between infection prevalence and infection intensity with latitude; elevation, temperature and precipitation best explained infection prevalence, while temperature best explained infection intensity. We also detected a positive association between species richness and Bd infections and associations between Bd infections with host reproductive biology and habitat type. This represents the longest and most thoroughly sampled latitudinal gradient of Bd in anuran populations. Our results corroborate earlier findings that abiotic factors are a major determinant of Bd infections and highlight the need for a better understanding of the role that species diversity plays in disease outcomes.

Original languageEnglish (US)
Article number100995
JournalFungal Ecology
Volume49
DOIs
StatePublished - Feb 2021

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Ecological Modeling
  • Plant Science

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